U.S. patent application number 11/046645 was filed with the patent office on 2006-04-20 for aromatic sulfone hydroxamic acid metalloprotease inhibitor.
Invention is credited to Thomas E. Barta, Daniel P. Becker, Louis J. Bedell, Terri L. Boehm, Jeffery N. Carroll, Gary A. DeCrescenzo, Theresa R. Fletcher, John N. Freskos, Daniel P. Getman, Gunnar J. Hanson, Susan L. Hockerman, Carol P. Howard, Stephen A. Kolodziej, Madeleine H. Li, Joseph J. McDonald, Deborah A. Mischke, Patrick B. Mullins, Joseph G. Rico, Nathan W. Stehle, Clara I. Villamil.
Application Number | 20060084688 11/046645 |
Document ID | / |
Family ID | 22066654 |
Filed Date | 2006-04-20 |
United States Patent
Application |
20060084688 |
Kind Code |
A1 |
Barta; Thomas E. ; et
al. |
April 20, 2006 |
Aromatic sulfone hydroxamic acid metalloprotease inhibitor
Abstract
A treatment process is disclosed that comprises administering an
effective amount of an aromatic sulfone hydroxamic acid that
exhibits excellent inhibitory activity of one or more matrix
metalloprotease (MMP) enzymes, such as MMP-2, MMP-9, and MMP-13,
while exhibiting substantially less inhibition at least of MMP-1 to
a host having a condition associated with pathological matrix
metalloprotease activity. The administered enzyme inhibitor
corresponds in structure to formula (I), below, or a
pharmaceutically acceptable salt thereof, wherein R.sup.1 and
R.sup.2 are both hydrido or R.sup.1 and R.sup.2 together with the
atoms to which they are bonded form a 5- to 8-membered ring
containing one, two, or three heteroatoms in the ring that are
oxygen, sulfur, or nitrogen. R.sup.3 in formula (I) is an
optionally substituted aryl or optionally substituted heteroaryl
radical. Also disclosed are metalloprotease inhibitor compounds
having those selective activities, processes for manufacture of
such compounds and pharmaceutical compositions using an inhibitor.
##STR1##
Inventors: |
Barta; Thomas E.; (Evanston,
IL) ; Becker; Daniel P.; (Glenview, IL) ;
Bedell; Louis J.; (Mt. Prospect, IL) ; Boehm; Terri
L.; (Ballwin, MO) ; Carroll; Jeffery N.;
(Columbia, IL) ; DeCrescenzo; Gary A.; (St.
Charles, MO) ; Fletcher; Theresa R.; (Kirkwood,
MO) ; Freskos; John N.; (Clayton, MO) ;
Getman; Daniel P.; (Chesterfield, MO) ; Hanson;
Gunnar J.; (Skokie, IL) ; Hockerman; Susan L.;
(Lincolnwood, IL) ; Howard; Carol P.; (Fenton,
MO) ; Kolodziej; Stephen A.; (Ballwin, MO) ;
Li; Madeleine H.; (Vernon Hills, IL) ; McDonald;
Joseph J.; (Wildwood, MO) ; Mischke; Deborah A.;
(Defiance, MO) ; Mullins; Patrick B.; (St. Louis,
MO) ; Rico; Joseph G.; (Ballwin, MO) ; Stehle;
Nathan W.; (Grafton, WI) ; Villamil; Clara I.;
(Glenview, IL) |
Correspondence
Address: |
WARNER-LAMBERT COMPANY
2800 PLYMOUTH RD
ANN ARBOR
MI
48105
US
|
Family ID: |
22066654 |
Appl. No.: |
11/046645 |
Filed: |
January 28, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10337942 |
Jan 7, 2003 |
6890937 |
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11046645 |
Jan 28, 2005 |
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09554082 |
Jul 31, 2000 |
6541489 |
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PCT/US98/23242 |
Nov 12, 1998 |
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10337942 |
Jan 7, 2003 |
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60066007 |
Nov 14, 1997 |
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Current U.S.
Class: |
514/369 ;
514/376; 514/400; 514/463; 514/575 |
Current CPC
Class: |
C07D 211/96 20130101;
C07D 309/28 20130101; A61K 31/426 20130101; C07D 263/06 20130101;
A61K 31/19 20130101; C07D 211/54 20130101; C07D 309/08 20130101;
C07D 319/06 20130101; A61P 35/04 20180101; C07D 413/14 20130101;
C07C 317/44 20130101; C07D 265/06 20130101; A61P 1/02 20180101;
C07D 401/12 20130101; C07D 405/12 20130101; C07D 335/02 20130101;
C07D 249/08 20130101; A61P 13/00 20180101; A61P 1/04 20180101; C07D
281/08 20130101; A61P 43/00 20180101; C07D 231/12 20130101; A61P
35/00 20180101; C07D 279/06 20130101; C07D 233/56 20130101; A61K
31/421 20130101; C07D 407/12 20130101; A61P 9/10 20180101; C07D
211/94 20130101; A61P 19/00 20180101; C07D 211/66 20130101; C07D
409/14 20130101; C07D 211/86 20130101; A61P 19/02 20180101; A61K
31/4166 20130101; C07D 401/06 20130101; C07D 409/12 20130101; C07D
413/12 20130101; C07D 225/02 20130101; A61P 29/00 20180101; C07D
239/04 20130101; C07D 337/04 20130101; C07D 417/12 20130101; C07D
325/00 20130101; C07D 207/48 20130101; A61P 25/28 20180101; A61P
27/02 20180101 |
Class at
Publication: |
514/369 ;
514/376; 514/400; 514/575; 514/463 |
International
Class: |
A61K 31/426 20060101
A61K031/426; A61K 31/421 20060101 A61K031/421; A61K 31/4166
20060101 A61K031/4166; A61K 31/19 20060101 A61K031/19 |
Claims
1-14. (canceled)
15. A process for treating a mammal having a condition associated
with pathological matrix metalloprotease (MMP) activity, wherein:
the process comprises administering a compound or pharmaceutically
acceptable salt recited in claim 62 in an effective amount to the
mammal; and the compound or salt is characterizeable in that the
compound or salt inhibits the activity of one or more of MMP-2,
MMP-9, and MMP-13, while exhibiting substantially less inhibiting
activity against MMP-1,
16. The process according to claim 143 wherein the sum of m+n+p is
1 or 2.
17. The process according to claim 143, wherein Z is selected from
the group consisting of O, S, and NR.sup.6.
18. The process according to claim 143, wherein each R.sup.6 is
selected from the group consisting of C.sub.3-C.sub.6-cycloalkyl,
C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.6-alkenyl,
C.sub.3-C.sub.6-alkynyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
amino-C.sub.1-C.sub.6-alkyl, aminosulfonyl,
heteroaryl-C.sub.1-C.sub.6-alkyl, aryloxycarbonyl, and
C.sub.1-C.sub.5-alkoxycarbonyl.
19. The process according to claim 143, wherein m is zero, n is
zero, p is 1, and Y is NR.sup.6.
20-61. (canceled)
62. A compound or pharmaceutically acceptable salt thereof,
wherein: the compound or salt is characterizeable in that the
compound or salt selectively inhibits in vitro activity of human
MMP-2, MMP-9, and/or MMP-13 over in vitro activity of human MMP-1;
the compound corresponds in structure to formula III: ##STR3873##
R.sup.3 is selected from the group consisting of phenyl and 5- to
6-membered heteroaryl, wherein: the phenyl or heteroaryl is
substituted at its 4-position when phenyl or 6-membered heteroaryl
and at its 3- or 4-position when a 5-membered heteroaryl with a
substituent selected from the group consisting of thiophenoxy,
4-chloro-phenoxy, 3-chlorophenoxy, 4-methoxyphenoxy,
3-benzodioxol-5-yloxy, 3,4-dimethylphenoxy, 4-fluorophenoxy,
4-fluorothiophenoxy, phenoxy, 4-trifluoro-methoxyphenoxy,
4-trifluoromethylphenoxy, 4-(trifluoromethylthio)phenoxy,
4-(trifluoromethylthio)thiophenoxy, 4-chloro-3-fluorophenoxy,
4-isopropoxyphenoxy, 4-isopropylphenoxy,
(2-methyl-1,3-benzothiazol-5-yl)oxy, 4-(1H-imidazol-1-yl)phenoxy,
4-chloro-3-methylphenoxy, 3-methyl-phenoxy, 4-ethoxyphenoxy,
3,4-difluorophenoxy, 4-chloro-3-methylphenoxy,
4-fluoro-3-chlorophenoxy, 4-(1H-1,2,4-triazol-1-yl)phenoxy,
3,5-difluorophenoxy, 3,4-dichlorophenoxy, 4-cyclopentylphenoxy,
4-bromo-3-methylphenoxy, 4-bromophenoxy, 4-methylthiophenoxy,
4-phenylphenoxy, 4-benzylphenoxy, 6-quinolinyloxy,
4-amino-3-methylphenoxy, 3-methoxyphenoxy,
5,6,7,8-tetrahydro-2-naphthalenyloxy, 3-hydroxymethylphenoxy, and
4-benzyloxyphenoxy; R.sup.14 is selected from the group consisting
of hydrogen, C(W)R.sup.15, and tetrahydropyranyl; W is selected
from the group consisting of O and S; R.sup.15 is selected from the
group consisting of C.sub.1-C.sub.6-alkyl, aryl,
C.sub.1-C.sub.6-alkoxy, heteroaryl-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl, aryloxy,
aryl-C.sub.1-C.sub.6-alkoxy, aryl-C.sub.1-C.sub.6-alkyl,
heteroaryl, and amino C.sub.1-C.sub.6-alkyl group, wherein: the
aminoalkyl nitrogen is optionally substituted with one or two
substituents independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, aryl, aryl-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl,
aryl-C.sub.1-C.sub.6-alkoxycarbonyl,
C.sub.1-C.sub.6-alkoxycarbonyl, and C.sub.1-C.sub.6-alkanoyl, or
the amino C.sub.1-C.sub.6-alkyl nitrogen is optionally substituted
with two substituents such that the amino C.sub.1-C.sub.6-alkyl
nitrogen and two substituents together form a 5- to 8-membered
heterocyclo or heteroaryl ring; m is zero, 1, or 2; n is zero, 1,
or 2; p is zero, 1, or 2; the sum of m+n+p is 1, 2, 3, or 4; as to
X, Y, and Z: (a) one of X, Y, and Z is selected from the group
consisting of C(O), NR.sup.6, O, S, S(O), S(O).sub.2, and
NS(O).sub.2R.sup.7, and the remaining two of X, Y, and Z are
CR.sup.8R.sup.9 and CR.sup.10R.sup.11, or (b) X and Z or Z and Y
together constitute a moiety that is selected from the group
consisting of NR.sup.6C(O), NR.sup.6S(O), NR.sup.6S(O).sub.2,
NR.sup.6S, NR.sup.60, SS, NR.sup.6NR.sup.6, and OC(O), with the
remaining one of X and Y being CR.sup.8R.sup.9, or (c) n is zero,
and X, Y, and Z together constitute a moiety selected from the
group consisting of: ##STR3874## wherein the wavy lines are bonds
to the atoms of the depicted ring; each of R.sup.6 and R.sup.6' is
independently selected from the group consisting of hydrogen,
C.sub.1-C.sub.6-alkanoyl, C.sub.6-aryl-C.sub.1-C.sub.6-alkyl,
aroyl,
bis(C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl)-C.sub.1-C.sub.6--
alkyl, C.sub.1-C.sub.6-alkyl, C.sub.1-C.sub.6-haloalkyl,
C.sub.1-C.sub.6-perfluoroalkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-cycloalkyl, C.sub.3-C.sub.8-heterocycloalkyl,
C.sub.3-C.sub.8-heterocycloalkylcarbonyl, C.sub.6-aryl,
C.sub.5-C.sub.6-heterocyclo, C.sub.5-C.sub.6-heteroaryl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.6-aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryl-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, C.sub.6-arylsulfonyl,
C.sub.1-C.sub.6-alkylsulfonyl, C.sub.5-C.sub.6-heteroarylsulfonyl,
carboxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.4-alkoxycarbonyl-C.sub.1-C.sub.6-alkyl,
aminocarbonyl, C.sub.1-C.sub.6-alkyliminocarbonyl,
C.sub.6-aryliminocarbonyl,
C.sub.5-C.sub.6-heterocycloiminocarbonyl,
C.sub.6-arylthio-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl,
C.sub.6-arylthio-C.sub.3-C.sub.6-alkenyl,
C.sub.1-C.sub.4-alkylthio-C.sub.3-C.sub.6-alkenyl,
C.sub.5-C.sub.6-heteroaryl-C.sub.1-C.sub.6-alkyl,
halo-C.sub.1-C.sub.6-alkanoyl, hydroxy-C.sub.1-C.sub.6-alkanoyl,
thiol-C.sub.1-C.sub.6-alkanoyl, C.sub.3-C.sub.6-alkenyl,
C.sub.3-C.sub.6-alkynyl, C.sub.1-C.sub.5-alkoxycarbonyl,
aryloxycarbonyl, NR.sup.8R.sup.9--C.sub.1-C.sub.5-alkylcarbonyl,
hydroxy-C.sub.1-C.sub.5-alkyl, aminocarbonyl hydroxyaminocarbonyl,
aminosulfonyl, amino-C.sub.1-C.sub.6-alkylsulfonyl, and
amino-C.sub.1-C.sub.6-alkyl, wherein: the aminocarbonyl,
aminosulfonyl, aminoalkylsulfonyl, or aminoalkyl nitrogen
optionally is substituted with one or two substituents
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, aryl-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl, and C.sub.1-C.sub.6-alkanoyl; R.sup.7
is selected from the group consisting of arylalkyl, aryl,
heteroaryl, heterocyclo, C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-alkynyl, C.sub.3-C.sub.6-alkenyl,
C.sub.1-C.sub.6-carboxyalkyl, and C.sub.1-C.sub.6-hydroxyalkyl; as
to R.sup.8: R.sup.8 is selected from the group consisting of
hydrogen, hydroxy, C.sub.1-C.sub.6-alkyl, aryl,
aryl-C.sub.1-C.sub.6-alkyl, heteroaryl,
heteroaryl-C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl, thiol-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
arylalkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylaryl-C.sub.1-6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide of any of the
thio substituents, the sulfone of any of the thio substituents,
perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl, and
amino-C.sub.1-C.sub.6-alkyl, wherein: the aminoalkyl nitrogen
optionally is substituted with one or two substituents
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, aryl-C.sub.1-C.sub.6-alkyl, cycloalkyl, and
C.sub.1-C.sub.6-alkanoyl, or R.sup.8 and R.sup.9, together with the
carbon to which they are bonded, form a carbonyl group, or R.sup.8
and R.sup.9 or R.sup.8 and R.sup.10, together with the atom(s) to
which they are bonded, form: a 5- to 8-membered carbocyclic ring,
or a 5- to 8-membered heterocyclic ring containing one or two
heteroatoms independently selected from the group consisting of
nitrogen, oxygen, and sulfur; as to R.sup.9: R.sup.9 is selected
from the group consisting of hydrogen, hydroxy,
C.sub.1-C.sub.6-alkyl, aryl, aryl-C.sub.1-C.sub.6-alkyl,
heteroaryl, heteroaryl-C.sub.1-C.sub.6-alkyl,
C.sub.2-C.sub.6-alkynyl, C.sub.2-C.sub.6-alkenyl,
thiol-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
arylalkoxy-C.sub.1-C.sub.6-,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylaryl-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide of any of the
thio substituents, the sulfone of any of the thio substituents,
perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl, and
amino-C.sub.1-C.sub.6-alkyl, wherein: the aminoalkyl nitrogen
optionally is substituted with one or two substituents
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, aryl-C.sub.1-C.sub.6-- alkyl, cycloalkyl,
and C.sub.1-C.sub.6-alkanoyl, or R.sup.8 and R.sup.9, together with
the carbon to which they are bonded, form a carbonyl group, or
R.sup.8 and R.sup.9, together with the carbon to which they are
bonded, form: a 5- to 8-membered carbocyclic ring, or a 5- to
8-membered heterocyclic ring containing one or two heteroatoms
independently selected from the group consisting of nitrogen,
oxygen, and sulfur; as to R.sup.10: R.sup.10 is selected from the
group consisting of hydrogen, hydroxy, C.sub.1-C.sub.6-alkyl, aryl,
aryl-C.sub.1-C.sub.6-alkyl, heteroaryl,
heteroaryl-C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl, thiol-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
arylalkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylaryl-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide of any of the
thio substituents, the sulfone of any of the thio substituents,
perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-6-alkyl, and amino-C.sub.1-C.sub.67
alkyl, wherein: the aminoalkyl nitrogen optionally is substituted
with one or two substituents independently selected from the group
consisting of C.sub.1-C.sub.6-alkyl, aryl-C.sub.1-C.sub.6-- alkyl,
cycloalkyl, and C.sub.1-C.sub.6-alkanoyl, or R.sup.10 and R.sup.11,
together with the carbon to which they are bonded, form a carbonyl
group, or R.sup.8 and R.sup.10 or R.sup.10 and R.sup.11, together
with the atom(s) to which they are bonded, form: a 5- to 8-membered
carbocyclic ring, or a 5- to 8-membered heterocyclic ring
containing one or two heteroatoms independently selected from the
group consisting of nitrogen, oxygen, and sulfur; as to R.sup.11:
R.sup.11 is selected from the group consisting of hydrogen,
hydroxy, C.sub.1-C.sub.6-alkyl, aryl, aryl-C.sub.1-C.sub.6-alkyl,
heteroaryl, heteroaryl-C.sub.1-C.sub.6-alkyl,
C.sub.2-C.sub.6-alkynyl, C.sub.2-C.sub.6-alkenyl,
thiol-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
arylalkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylaryl-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide of any of the
thio substituents, the sulfone of any of the thio substituents,
perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl, and
amino-C.sub.1-C.sub.6-alkyl, wherein: the aminoalkyl nitrogen
optionally is substituted with one or two substituents
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, aryl-C.sub.1-6-- alkyl, cycloalkyl, and
C.sub.1-C.sub.6-alkanoyl, or R.sup.10 and R.sup.11, together with
the carbon to which they are bonded, form a carbonyl group, or
R.sup.10 and R.sup.11, together with the carbon to which they are
bonded, form: a 5- to 8-membered carbocyclic ring, or a 5- to
8-membered heterocyclic ring containing one or two heteroatoms
independently selected from the group consisting of nitrogen,
oxygen, and sulfur; only one of R.sup.8 and R.sup.9 or R.sup.10 and
R.sup.11 is hydroxyl R.sup.12 and R.sup.12 are independently
selected from the group consisting of a hydrido hydrogen,
C.sub.1-C.sub.6-alkyl, aryl, aryl-C.sub.1-C.sub.6-alkyl,
heteroaryl, heteroarylalkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl, thiol-C.sub.1-C.sub.6-alkyl, cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
aryloxy-C.sub.1-C.sub.6-alkyl, amino-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylaryl-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide of any of the
thio substituents, the sulfone of any of the thio substituents,
perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl, and
amino-C.sub.1-C.sub.6-alkyl, wherein: the aminoalkyl nitrogen
optionally is substituted with one or two substituents
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, aryl-C.sub.1-C.sub.6-alkyl, cycloalkyl, and
C.sub.1-C.sub.6-alkanoyl; and R.sup.13 is selected from the group
consisting of a hydrogen, benzyl, phenyl, C.sub.1-C.sub.6-alkyl,
C.sub.2-C.sub.6-alkynyl, C.sub.2-C.sub.6-alkenyl, and
C.sub.1-C.sub.6-hydroxyalkyl.
63. The compound or salt according to claim 67, wherein the sum of
m+n+p is 1 or 2.
64. The compound or salt according to claim 67, wherein Z is
selected from the group consisting of O, S, and NR.sup.6.
65. The compound or salt according to claim 67, wherein each
R.sup.6 is selected from the group consisting of
C.sub.3-C.sub.6-cycloalkyl, C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-alkenyl, C.sub.3-C.sub.6-alkynyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
amino-C.sub.1-C.sub.6-alkyl, aminosulfonyl,
heteroaryl-C.sub.1-C.sub.6-alkyl, aryloxycarbonyl, and
C.sub.1-C.sub.5-alkoxycarbonyl.
66. The compound or salt according to claim 67, wherein m is zero,
n is zero, p is 1, and Y is NR.sup.6.
67. The compound or salt according to claim 62, wherein R.sup.14 is
hydrogen.
68-124. (canceled)
125. A pharmaceutical composition that comprises a compound or
pharmaceutically-acceptable salt according to claim 62 dissolved or
dispersed in a pharmaceutically acceptable carrier.
126-142. (canceled)
143. The process according to claim 15, wherein R.sup.14 is
hydrogen.
144. The process according to claim 143, wherein R.sup.3 has a
length greater than the length of a pentyl group and less than the
length of an icosyl group.
145. The process according to claim 143, wherein R.sup.3 is phenyl
substituted at its 4-position with a substituent selected from the
group consisting of thiophenoxy, 4-chloro-phenoxy, 3-chlorophenoxy,
4-methoxyphenoxy, 3-benzodioxol-5-yloxy, 3,4-dimethylphenoxy,
4-fluorophenoxy, 4-fluorothiophenoxy, phenoxy,
4-trifluoro-methoxyphenoxy, 4-trifluoromethylphenoxy,
4-(trifluoromethylthio)phenoxy, 4-(trifluoromethylthio)thiophenoxy,
4-chloro-3-fluorophenoxy, 4-isopropoxyphenoxy, 4-isopropylphenoxy,
(2-methyl-1,3-benzothiazol-5-yl)oxy, 4-(1H-imidazol-1-yl)phenoxy,
4-chloro-3-methylphenoxy, 3-methyl-phenoxy, 4-ethoxyphenoxy,
3,4-difluorophenoxy, 4-chloro-3-methylphenoxy,
4-fluoro-3-chlorophenoxy, 4-(1H-1,2,4-triazol-1-yl)phenoxy,
3,5-difluorophenoxy, 3,4-dichlorophenoxy, 4-cyclopentylphenoxy,
4-bromo-3-methylphenoxy, 4-bromophenoxy, 4-methylthiophenoxy,
4-phenylphenoxy, 4-benzylphenoxy, 6-quinolinyloxy,
4-amino-3-methylphenoxy, 3-methoxyphenoxy,
5,6,7,8-tetrahydro-2-naphthalenyloxy, 3-hydroxymethylphenoxy, and
4-benzyloxyphenoxy.
146. The process according to claim 143, wherein R.sup.3 is
5-membered heteroaryl substituted at its 3- or 4-position with a
substituent selected from the group consisting of thiophenoxy,
4-chloro-phenoxy, 3-chlorophenoxy, 4-methoxyphenoxy,
3-benzodioxol-5-yloxy, 3,4-dimethylphenoxy, 4-fluorophenoxy,
4-fluorothiophenoxy, phenoxy, 4-trifluoro-methoxyphenoxy,
4-trifluoromethylphenoxy, 4-(trifluoromethylthio)phenoxy,
4-(trifluoromethylthio)thiophenoxy, 4-chloro-3-fluorophenoxy,
4-isopropoxyphenoxy, 4-isopropylphenoxy,
(2-methyl-1,3-benzothiazol-5-yl)oxy, 4-(1H-imidazol-1-yl)phenoxy,
4-chloro-3-methylphenoxy, 3-methyl-phenoxy, 4-ethoxyphenoxy,
3,4-difluorophenoxy, 4-chloro-3-methylphenoxy,
4-fluoro-3-chlorophenoxy, 4-(1H-1,2,4-triazol-1-yl)phenoxy,
3,5-difluorophenoxy, 3,4-dichlorophenoxy, 4-cyclopentylphenoxy,
4-bromo-3-methylphenoxy, 4-bromophenoxy, 4-methylthiophenoxy,
4-phenylphenoxy, 4-benzylphenoxy, 6-quinolinyloxy,
4-amino-3-methylphenoxy, 3-methoxyphenoxy,
5,6,7,8-tetrahydro-2-naphthalenyloxy, 3-hydroxymethylphenoxy, and
4-benzyloxyphenoxy.
147. The process according to claim 143, wherein R.sup.3 is
6-membered heteroaryl substituted at its 4-position with a
substituent selected from the group consisting of thiophenoxy,
4-chloro-phenoxy, 3-chlorophenoxy, 4-methoxyphenoxy,
3-benzodioxol-5-yloxy, 3,4-dimethylphenoxy, 4-fluorophenoxy,
4-fluorothiophenoxy, phenoxy, 4-trifluoro-methoxyphenoxy,
4-trifluoromethylphenoxy, 4-(trifluoromethylthio)phenoxy,
4-(trifluoromethylthio)thiophenoxy, 4-chloro-3-fluorophenoxy,
4-isopropoxyphenoxy, 4-isopropylphenoxy,
(2-methyl-1,3-benzothiazol-5-yl)oxy, 4-(1H-imidazol-1-yl)phenoxy,
4-chloro-3-methylphenoxy, 3-methyl-phenoxy, 4-ethoxyphenoxy,
3,4-difluorophenoxy, 4-chloro-3-methylphenoxy,
4-fluoro-3-chlorophenoxy, 4-(1H-1,2,4-triazol-1-yl)phenoxy,
3,5-difluorophenoxy, 3,4-dichlorophenoxy, 4-cyclopentylphenoxy,
4-bromo-3-methylphenoxy, 4-bromophenoxy, 4-methylthiophenoxy,
4-phenylphenoxy, 4-benzylphenoxy, 6-quinolinyloxy,
4-amino-3-methylphenoxy, 3-methoxyphenoxy,
5,6,7,8-tetrahydro-2-naphthalenyloxy, 3-hydroxymethylphenoxy, and
4-benzyloxyphenoxy.
148. The compound or salt according to claim 62, wherein R.sup.14
is tetrahydropyranyl.
149. The compound or salt according to claim 67, wherein R.sup.3
has a length greater than the length of a pentyl group and less
than the length of an icosyl group.
150. The compound or salt according to claim 67, wherein R.sup.3 is
phenyl substituted at its 4-position with a substituent selected
from the group consisting of thiophenoxy, 4-chloro-phenoxy,
3-chlorophenoxy, 4-methoxyphenoxy, 3-benzodioxol-5-yloxy,
3,4-dimethylphenoxy, 4-fluorophenoxy, 4-fluorothiophenoxy, phenoxy,
4-trifluoro-methoxyphenoxy, 4-trifluoromethylphenoxy,
4-(trifluoromethylthio)phenoxy, 4-(trifluoromethylthio)thiophenoxy,
4-chloro-3-fluorophenoxy, 4-isopropoxyphenoxy, 4-isopropylphenoxy,
(2-methyl-1,3-benzothiazol-5-yl)oxy, 4-(1H-imidazol-1-yl)phenoxy,
4-chloro-3-methylphenoxy, 3-methyl-phenoxy, 4-ethoxyphenoxy,
3,4-difluorophenoxy, 4-chloro-3-methylphenoxy,
4-fluoro-3-chlorophenoxy, 4-(1H-1,2,4-triazol-1-yl)phenoxy,
3,5-difluorophenoxy, 3,4-dichlorophenoxy, 4-cyclopentylphenoxy,
4-bromo-3-methylphenoxy, 4-bromophenoxy, 4-methylthiophenoxy,
4-phenylphenoxy, 4-benzylphenoxy, 6-quinolinyloxy,
4-amino-3-methylphenoxy, 3-methoxyphenoxy,
5,6,7,8-tetrahydro-2-naphthalenyloxy, 3-hydroxymethylphenoxy, and
4-benzyloxyphenoxy.
151. The compound or salt according to claim 67, wherein R.sup.3 is
5-membered heteroaryl substituted at its 3- or 4-position with a
substituent selected from the group consisting of thiophenoxy,
4-chloro-phenoxy, 3-chlorophenoxy, 4-methoxyphenoxy,
3-benzodioxol-5-yloxy, 3,4-dimethylphenoxy, 4-fluorophenoxy,
4-fluorothiophenoxy, phenoxy, 4-trifluoro-methoxyphenoxy,
4-trifluoromethylphenoxy, 4-(trifluoromethylthio)phenoxy,
4-(trifluoromethylthio)thiophenoxy, 4-chloro-3-fluorophenoxy,
4-isopropoxyphenoxy, 4-isopropylphenoxy,
(2-methyl-1,3-benzothiazol-5-yl)oxy, 4-(1H-imidazol-1-yl)phenoxy,
4-chloro-3-methylphenoxy, 3-methyl-phenoxy, 4-ethoxyphenoxy,
3,4-difluorophenoxy, 4-chloro-3-methylphenoxy,
4-fluoro-3-chlorophenoxy, 4-(1H-1,2,4-triazol-1-yl)phenoxy,
3,5-difluorophenoxy, 3,4-dichlorophenoxy, 4-cyclopentylphenoxy,
4-bromo-3-methylphenoxy, 4-bromophenoxy, 4-methylthiophenoxy,
4-phenylphenoxy, 4-benzylphenoxy, 6-quinolinyloxy,
4-amino-3-methylphenoxy, 3-methoxyphenoxy,
5,6,7,8-tetrahydro-2-naphthalenyloxy, 3-hydroxymethylphenoxy, and
4-benzyloxyphenoxy.
152. The compound or salt according to claim 67, wherein R.sup.3 is
6-membered heteroaryl substituted at its 4-position with a
substituent selected from the group consisting of thiophenoxy,
4-chloro-phenoxy, 3-chlorophenoxy, 4-methoxyphenoxy,
3-benzodioxol-5-yloxy, 3,4-dimethylphenoxy, 4-fluorophenoxy,
4-fluorothiophenoxy, phenoxy, 4-trifluoro-methoxyphenoxy,
4-trifluoromethylphenoxy, 4-(trifluoromethylthio)phenoxy,
4-(trifluoromethylthio)thiophenoxy, 4-chloro-3-fluorophenoxy,
4-isopropoxyphenoxy, 4-isopropylphenoxy,
(2-methyl-1,3-benzothiazol-5-yl)oxy, 4-(1H-imidazol-1-yl)phenoxy,
4-chloro-3-methylphenoxy, 3-methyl-phenoxy, 4-ethoxyphenoxy,
3,4-difluorophenoxy, 4-chloro-3-methylphenoxy,
4-fluoro-3-chlorophenoxy, 4-(1H-1,2,4-triazol-1-yl)phenoxy,
3,5-difluorophenoxy, 3,4-dichlorophenoxy, 4-cyclopentylphenoxy,
4-bromo-3-methylphenoxy, 4-bromophenoxy, 4-methylthiophenoxy,
4-phenylphenoxy, 4-benzylphenoxy, 6-quinolinyloxy,
4-amino-3-methylphenoxy, 3-methoxyphenoxy,
5,6,7,8-tetrahydro-2-naphthalenyloxy, 3-hydroxymethylphenoxy, and
4-benzyloxyphenoxy.
Description
TECHNICAL FIELD
[0001] This invention is directed to proteinase (protease)
inhibitors, and more particularly to the use of aromatic sulfone
hydroxamic acid compounds that, inter alia, are selective
inhibitors of matrix metalloproteinases in a process for treating
conditions associated with pathological matrix metalloproteinase
activity, the selective inhibitors themselves, compositions of
proteinase inhibitors, intermediates for the syntheses of
proteinase inhibitors, and processes for the preparation of
proteinase inhibitors.
BACKGROUND OF THE INVENTION
[0002] Connective tissue, extracellular matrix constituents and
basement membranes are required components of all mammals. These
components are the biological materials that provide rigidity,
differentiation, attachments and, in some cases, elasticity to
biological systems including human beings and other mammals.
Connective tissues components include, for example, collagen,
elastin, proteoglycans, fibronectin and laminin. These biochemicals
makeup, or are components of structures, such as skin, bone, teeth,
tendon, cartilage, basement membrane, blood vessels, cornea and
vitreous humor.
[0003] Under normal conditions, connective tissue turnover and/or
repair processes are controlled and in equilibrium. The loss of
this balance for whatever reason leads to a number of disease
states. Inhibition of the enzymes responsible loss of equilibrium
provides a control mechanism for this tissue decomposition and,
therefore, a treatment for these diseases.
[0004] Degradation of connective tissue or connective tissue
components is carried out by the action of proteinase enzymes
released from resident tissue cells and/or invading inflammatory or
tumor cells. A major class of enzymes involved in this function are
the zinc metalloproteinases (metalloproteases).
[0005] The metalloprotease enzymes are divided into classes with
some members having several different names in common use. Examples
are: collagenase I (MMP-1, fibroblast collagenase; EC 3.4.24.3);
collagenase II (MMP-8, neutrophil collagenase; EC 3.4.24.34),
collagenase III (MMP-13), stromelysin 1 (MMP-3; EC 3.4.24.17),
stromelysin 2 (MMP-10; EC 3.4.24.22), proteoglycanase, matrilysin
(MMP-7), gelatinase A (MMP-2, 72 kDa gelatinase, basement membrane
collagenase; EC 3.4.24.24), gelatinase B (MMP-9, 92 kDa gelatinase;
EC 3.4.24.35), stromelysin 3 (MMP-11), metalloelastase (MMP-12,
HME, human macrophage elastase) and membrane MMP (MMP-14). MMP is
an abbreviation or acronym representing the term Matrix
Metalloprotease with the attached numerals providing
differentiation between specific members of the MMP group.
[0006] The uncontrolled breakdown of connective tissue by
metalloproteases is a feature of many pathological conditions.
Examples include rheumatoid arthritis, osteoarthritis, septic
arthritis; corneal, epidermal or gastric ulceration; tumor
metastasis, invasion or angiogenesis; periodontal disease;
proteinuria; Alzheimers Disease; coronary thrombosis and bone
disease. Defective injury repair processes also occur. This can
produce improper wound healing leading to weak repairs, adhesions
and scarring. These latter defects can lead to disfigurement and/or
permanent disabilities as with post-surgical adhesions.
[0007] Metalloproteases are also involved in the biosynthesis of
tumor necrosis factor (TNF), and inhibition of the production or
action of TNF and related compounds is an important clinical
disease treatment mechanism. TNF-.alpha., for example, is a
cytokine that at present is thought to be produced initially as a
28 kD cell-associated molecule. It is released as an active, 17 kD
form that can mediate a large number of deleterious effects in
vitro and in vivo. For example, TNF can cause and/or contribute to
the effects of inflammation, rheumatoid arthritis, autoimmune
disease, multiple sclerosis, graft rejection, fibrotic disease,
cancer, infectious diseases, malaria, mycobacterial infection,
meningitis, fever, psoriasis, cardiovascular/pulmonary effects such
as post-ischemic reperfusion injury, congestive heart failure,
hemorrhage, coagulation, hyperoxic alveolar injury, radiation
damage and acute phase responses like those seen with infections
and sepsis and during shock such as septic shock and hemodynamic
shock. Chronic release of active TNF can cause cachexia and
anorexia. TNF can be lethal, and TNF can help control the growth of
tumor cells.
[0008] TNF-.alpha. convertase is a metalloprotease involved in the
formation of soluble TNF-.alpha.. Inhibition of TNF-.alpha.
convertase (TACE) inhibits production of active TNF-.alpha..
Compounds that inhibit both MMPs activity and TNF-.alpha.
production have been disclosed in WIPO International Publication
Nos. WO 94/24140, WO 94/02466 and WO 97/20824. Compounds that
inhibit MMPs such as collagenase, stromelysin and gelatinase have
been shown to inhibit the release of TNF (Gearing et al. Nature
376, 555-557 (1994), McGeehan et al., Nature 376, 558-561 (1994)).
There remains a need for effective MMP inhibitors. There also
remains a need for effective TNF-.alpha. convertase inhibiting
agents.
[0009] MMPs are involved in other biochemical processes in mammals
as well. Included is the control of ovulation, post-partum uterine
involution, possibly implantation, cleavage of APP (.beta.-Amyloid
Precursor Protein) to the amyloid plaque and inactivation of
.alpha..sub.1-protease inhibitor (.alpha..sub.1-PI). Inhibition of
these metalloproteases permits the control of fertility and the
treatment or prevention of Alzheimers Disease. In addition,
increasing and maintaining the levels of an endogenous or
administered serine protease inhibitor drug or biochemical such as
.alpha..sub.1-PI supports the treatment and prevention of diseases
such as emphysema, pulmonary diseases, inflammatory diseases and
diseases of aging such as loss of skin or organ stretch and
resiliency.
[0010] Inhibition of selected MMPs can also be desirable in other
instances. Treatment of cancer and/or inhibition of metastasis
and/or inhibition of angiogenesis are examples of approaches to the
treatment of diseases wherein the selective inhibition of
stromelysin, gelatinase A or B, or collagenase III appear to be the
relatively most important enzyme or enzymes to inhibit especially
when compared with collagenase I (MMP-1). A drug that does not
inhibit collagenase I can have a superior therapeutic profile.
Osteoarthritis, another prevalent disease wherein it is believed
that cartilage degradation of inflamed joints is at least partially
caused by MMP-13 released from cells such as stimulated
chrondrocytes, may be best treated by administration of drugs one
of whose modes of action is inhibition of MMP-13. See, for example,
Mitchell et al., J. Clin. Invest., 97:761-768 (1996) and Reboul et
al., J. Clin. Invest., 97:201'-2019 (1996).
[0011] Inhibitors of metalloproteases are known. Examples include
natural biochemicals such as tissue inhibitors of
metalloproteinases (TIMPs), .alpha..sub.2-macroglobulin and their
analogs or derivatives. These endogenous inhibitors are high
molecular weight protein molecules that form inactive complexes
with metalloproteases. A number of smaller peptide-like compounds
that inhibit metalloproteases have been described. Mercaptoamide
peptidyl derivatives have shown ACE inhibition in vitro and in
vivo. Angiotensin converting enzyme (ACE) aids in the production of
angiotensin II, a potent pressor substance in mammals and
inhibition of this enzyme leads to the lowering of blood
pressure.
[0012] Thiol group-containing amide or peptidyl amide-based
metalloprotease (MMP) inhibitors are known as is shown in, for
example, WO95/12389, WO96/11209 and U.S. Pat. No. 4,595,700.
Hydroxamate group-containing MMP inhibitors are disclosed in a
number of published patent applications such as WO 95/29892, WO
97/24117, WO 97/49679 and EP 0 780 386 that disclose carbon
back-boned compounds, and WO 90/05719, WO 93/20047, WO 95/09841 and
WO 96/06074 that disclose hydroxamates that have a peptidyl
back-bones or peptidomimetic back-bones, as does the article by
Schwartz et al., Progr. Med. Chem., 29:271-334(1992) and those of
Rasmussen et al., Pharmacol. Ther., 75(1): 69-75 (1997) and Denis
et al., Invest. New Drugs, 15(3): 175-185 (1997).
[0013] One possible problem associated with known MMP inhibitors is
that such compounds often exhibit the same or similar inhibitory
effects against each of the MMP enzymes. For example, the
peptidomimetic hydroxamate known as batimastat is reported to
exhibit IC.sub.50 values of about 1 to about 20 nanomolar (nM)
against each of MMP-1, MMP-2, MMP-3, MMP-7, and MMP-9. Marimastat,
another peptidomimetic hydroxamate was reported to be another
broad-spectrum MMP inhibitor with an enzyme inhibitory spectrum
very similar to batimastat, except that marimastat exhibited an
IC.sub.50 value against MMP-3 of 230 nM. Rasmussen et al.,
Pharmacol. Ther., 75(1): 69-75 (1997).
[0014] Meta analysis of data from Phase I/II studies using
marimastat in patients with advanced, rapidly progressive,
treatment-refractory solid tumor cancers (colorectal, pancreatic,
ovarian, prostate) indicated a dose-related reduction in the rise
of cancer-specific antigens used as surrogate markers for
biological activity. Although marimastat exhibited some measure of
efficacy via these markers, toxic side effects were noted. The most
common drug-related toxicity of marimastat in those clinical trials
was musculoskeletal pain and stiffness, often commencing in the
small joints in the hands, spreading to the arms and shoulder. A
short dosing holiday of 1-3 weeks followed by dosage reduction
permits treatment to continue. Rasmussen et al., Pharmacol. Ther.,
75(1): 69-75 (1997). It is thought that the lack of specificity of
inhibitory effect among the MMPs may be the cause of that
effect.
[0015] International application Wo 98/38163, published on Sep. 3,
1998 disclose a large group of hydroxamate inhibitors of MMPs and
TACE. The compounds of WO 98/38163 contain one or two substituents
adjacent to the hydroxamate functionality and a substituent that
can be an aromatic sulfonyl group adjacent to those one or two
substituents.
[0016] International application WO 98/37877, published on Sep. 3,
1998 discloses compounds that contain a 5- to 7-membered
heterocyclic ring adjacent to the hydroxamate functionality and can
contain an aromatic sulfonyl group adjacent to the heterocyclic
ring.
[0017] Although many of the known MMP inhibitors such as
batimastat, marimastat and the hydroxamates of WO 98/37877 and WO
98/38163 exhibit a broad spectrum of activity against MMPS, those
compounds are not particularly selective in their inhibitory
activity. This lack of selectivity may be the cause of the
musculoskeletal pain and stiffness observed with their use. In
addition, it can be therapeutically advantageous to utilize a
medicament that is selective in its activity as compared to a
generally active material so that treatment can be more closely
tailored to the pathological condition presented by the host
mammal. The disclosure that follows describes a process for
treating a host mammal having a condition associated with
pathological matrix metalloprotease activity that utilizes a
compound that selectively inhibits one or more MMPs, while
exhibiting less activity against at least MMP-1.
SUMMARY OF THE INVENTION
[0018] The present invention is directed to a treatment process
that comprises administering a contemplated aromatic sulfone
hydroxamic acid metalloprotease inhibitor in an effective amount to
a host mammal having a condition associated with pathological
metalloprotease activity. A contemplated molecule, inter alia,
exhibits excellent inhibitory activity of one or more matrix
metalloprotease (MMP) enzymes, such as MMP-2, MMP-9 and MMP-13,
while exhibiting substantially less inhibition at least of MMP-1.
By "substantially less" it is meant that a contemplated compound
exhibits an IC.sub.50 value ratio against one or more of MMP-2,
MMP-9 or MMP-13 as compared to its IC.sub.50 value against MMP-1,
e.g., IC.sub.50 MMP-2:IC.sub.50 MMP-1, that is less than about
1:10, preferably less than about 1:100, and most preferably less
than about 1:1000 in the in vitro inhibition assay utilized
hereinafter. The invention also contemplates particular compounds
that selectively inhibit the activity of one or more of MMP-2,
MMP-9 and MMP-13, while exhibiting substantially less inhibition at
least of MMP-1, as well as a composition containing such a MMP
inhibitor as active ingredient. The invention further contemplates
intermediates in the preparation of a contemplated aromatic sulfone
hydroxamic acid molecule and a process for preparing an aromatic
sulfone hydroxamic acid molecule.
[0019] Briefly, one embodiment of the present invention is directed
to a treatment process that comprises administering a contemplated
aromatic sulfone hydroxamic acid metalloprotease inhibitor that
selectively inhibits matrix metalloprotease activity as above in an
effective amount to a host mammal having a condition associated
with pathological metalloprotease activity. The administered enzyme
inhibitor corresponds in structure to formula (I), below, or a
pharmaceutically acceptable salt thereof: ##STR2## [0020] wherein
[0021] R.sup.1 and R.sup.2 are both hydrido or R.sup.1 and R.sup.2
together with the atoms to which they are bonded form a 5- to
8-membered ring containing one, two or three heteroatoms in the
ring that are oxygen, sulfur or nitrogen.
[0022] R.sup.3 in formula I is an optionally substituted aryl or
optionally substituted heteroaryl radical. When R.sup.3 is a
substituted aryl or heteroaryl radical, a contemplated substituent
is selected from the group consisting of an aryl, heteroaryl,
aralkyl, heteroaralkyl, aryloxy, arylthio, aralkoxy,
heteroaralkoxy, aralkoxyalkyl, aryloxyalkyl, aralkanoylalkyl,
arylcarbonylalkyl, aralkylaryl, aryloxyalkylaryl, aralkoxyaryl,
arylazoaryl, arylhydrazinoaryl, alkylthioaryl, arylthioalkyl,
alkylthioaralkyl, aralkylthioalkyl, an aralkylthioaryl radical, the
sulfoxide or sulfone of any of the thio substituents, and a fused
ring structure comprising two or more 5- or 6-membered rings
selected from the group consisting of aryl, heteroaryl, carbocyclic
and heterocyclic.
[0023] The substituent bonded to the aryl or heteroaryl radical of
which the R.sup.3 radical is comprised itself can be substituted
with one or more substituents; i.e., the substituting substituent
is optionally substituted. When that aryl or heteroaryl radical is
substituted, and the substituting moiety (group, substituent, or
radical) is itself substituted, the last-named substituent is
independently selected from the group consisting of a cyano,
perfluoroalkyl, trifluoromethoxy, trifluoromethylthio, haloalkyl,
trifluoromethylalkyl, aralkoxycarbonyl, aryloxycarbonyl, hydroxy,
halo, alkyl, alkoxy, nitro, thiol, hydroxycarbonyl, aryloxy,
arylthio, aralkyl, aryl, arylcarbonylamino, heteroaryloxy,
heteroarylthio, heteroaralkyl, cycloalkyl, heterocyclooxy,
heterocyclothio, heterocycloamino, cycloalkyloxy, cycloalkylthio,
heteroaralkoxy, heteroaralkylthio, aralkoxy, aralkylthio,
aralkylamino, heterocyclo, heteroaryl, arylazo,
hydroxycarbonylalkoxy, alkoxycarbonylalkoxy, alkanoyl,
arylcarbonyl, aralkanoyl, alkanoyloxy, aralkanoyloxy, hydroxyalkyl,
hydroxyalkoxy, alkylthio, alkoxyalkylthio, alkoxycarbonyl,
aryloxyalkoxyaryl, arylthioalkylthioaryl, aryloxyalkylthioaryl,
arylthioalkoxyaryl, hydroxycarbonylalkoxy,
hydroxycarbonylalkylthio, alkoxycarbonylalkoxy,
alkoxycarbonylalkylthio, amino, wherein the amino nitrogen is (i)
unsubstituted, or (ii) substituted with one or two substituents
that are independently selected from the group consisting of an
alkyl, aryl, heteroaryl, aralkyl, cycloalkyl, aralkoxycarbonyl,
alkoxycarbonyl, arylcarbonyl, aralkanoyl, heteroarylcarbonyl,
heteroaralkanoyl and an alkanoyl group, or (iii) wherein the amino
nitrogen and two substituents attached thereto form a 5- to
8-membered heterocyclo or heteroaryl ring containing zero to two
additional heteroatoms that are nitrogen, oxygen or sulfur and
which ring itself is (a) unsubstituted or (b) substituted with one
or two groups independently selected from the group consisting of
an aryl, alkyl, heteroaryl, aralkyl, heteroaralkyl, hydroxy,
alkoxy, alkanoyl, cycloalkyl, heterocycloalkyl, alkoxycarbonyl,
hydroxyalkyl, trifluoromethyl, benzofused heterocycloalkyl,
hydroxyalkoxyalkyl, aralkoxycarbonyl, hydroxycarbonyl,
aryloxycarbonyl, benzofused heterocycloalkoxy, benzofused
cycloalkylcarbonyl, heterocyclo-alkylcarbonyl, and a
cycloalkylcarbonyl group, carbonylamino [0024] wherein the
carbonylamino nitrogen is (i) unsubstituted, or (ii) is the reacted
amine of an amino acid, or (iii) substituted with one or two
radicals selected from the group consisting of an alkyl,
hydroxyalkyl, hydroxyheteroaralkyl, cycloalkyl, aralkyl,
trifluoromethylalkyl, heterocycloalkyl, benzofused
heterocycloalkyl, benzofused heterocycloalkyl, benzofused
cycloalkyl, and an N,N-dialkylsubstituted alkylamino-alkyl group,
or (iv) the carboxamido nitrogen and two substituents bonded
thereto together form a 5- to 8-membered heterocyclo, heteroaryl or
benzofused heterocycloalkyl ring that is itself unsubstituted or
substituted with one or two radicals independently selected from
the group consisting of an alkyl, alkoxycarbonyl, nitro,
heterocycloalkyl, hydroxy, hydroxycarbonyl, aryl, aralkyl,
heteroaralkyl and an amino group, [0025] wherein the amino nitrogen
is (i) unsubstituted, or (ii) substituted with one or two
substituents that are independently selected from the group
consisting of alkyl, aryl, and heteroaryl, or (iii) wherein the
amino nitrogen and two substituents attached thereto form a 5- to
8-membered heterocyclo or heteroaryl ring, and an aminoalkyl group
wherein the aminoalkyl nitrogen is (i) unsubstituted, or (ii)
substituted with one or two substituents independently selected
from the group consisting of an alkyl, aryl, aralkyl, cycloalkyl,
aralkoxycarbonyl, alkoxycarbonyl, and an alkanoyl group, or (iii)
wherein the aminoalkyl nitrogen and two substituents attached
thereto form a 5- to 8-membered heterocyclo or heteroaryl ring.
[0026] In preferred practice, R.sup.1 and R.sup.2 together with the
atoms to which they are bonded form a 6-membered ring.
[0027] An R.sup.3 radical preferably has a length that is greater
than that of a pentyl group [a --(CH.sub.2).sub.4CH.sub.3 chain]
and more preferably greater than about that of a hexyl group [a
--(CH.sub.2).sub.5CH.sub.3 chain]. An R.sup.3 radical preferably
has a length that is less than that of an icosyl group [a
--(CH.sub.2).sub.19CH.sub.3 chain], and more preferably a length
that is less than that of a stearyl group [a
--(CH.sub.2).sub.17CH.sub.3 chain). A preferred R.sup.3 group
contains two or more 5- or 6-membered rings. A contemplated R.sup.3
group, when rotated about an axis drawn through the SO.sub.2-bonded
1-position and the substituent-bonded 4-position of a 6-membered
ring or the SO.sub.2-bonded 1-position and substituent-bonded 3- or
4-position of a 5-membered ring, defines a three-dimensional volume
whose widest dimension has the width in a direction transverse to
that axis to rotation of about one furanyl ring to about two phenyl
rings.
[0028] It is also preferred that a R.sup.3 radical be a
single-ringed aryl or heteroaryl group that is 5- or 6-membered,
and is itself substituted at its own 4-position when a 6-membered
ring or at its own 3- or 4-position when a 5-membered ring with an
optionally substituted substituent selected from the group
consisting of one other single-ringed aryl or heteroaryl group, a
C.sub.3-C.sub.14 alkyl group, a N-piperidyl group, a N-piperazyl
group, a phenoxy group, a thiophenoxy group, a 4-thiopyridyl group,
a phenylazo group and a benzamido group. The substituent of the 5-
or 6-membered aryl or heteroaryl group can itself be substituted as
discussed before.
[0029] A preferred compound for use in a contemplated process has a
structure that corresponds to formula II, below, or a
pharmaceutically acceptable salt thereof: ##STR3## [0030] wherein
[0031] R.sup.14 is hydrido, a pharmaceutically acceptable cation or
C(W)R.sup.15 where W is O or S and R.sup.15 is selected from the
group consisting of an C.sub.1-C.sub.6-alkyl, aryl,
C.sub.1-C.sub.6-alkoxy, heteroaryl-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl, aryloxy,
ar-C.sub.1-C.sub.6-alkoxy, ar-C.sub.1-C.sub.6-alkyl, heteroaryl and
amino C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two
substituents independently selected from the group consisting of an
C.sub.1-C.sub.6-alkyl, aryl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkoxycarbonyl, C.sub.1-C.sub.6-alkoxycarbonyl,
and C.sub.1-C.sub.6-alkanoyl radical, or (iii) wherein the amino
C.sub.1-C.sub.6-alkyl nitrogen and two substituents attached
thereto form a 5- to 8-membered heterocyclo or heteroaryl ring;
[0032] m is zero, 1 or 2; [0033] n is zero, 1 or 2; [0034] p is
zero, 1 or 2; [0035] the sum of m+n+p=1, 2, 3 or 4; [0036] (a) one
of X, Y and Z is selected from the group consisting of C(O),
NR.sup.6, O, S, S(O), S(O).sub.2 and NS(O).sub.2R.sup.7, and the
remaining two of X, Y and Z are CR.sup.8R.sup.9, and
CR.sup.10R.sup.11, or [0037] (b) X and Z or Z and Y together
constitute a moiety that is selected from the group consisting of
NR.sup.6C(O), NR.sup.6S(O), NR.sup.6S(O).sub.2, NR.sup.6S,
NR.sup.6O, SS, NR.sup.6NR.sup.6 and OC(O), with the remaining one
of X, Y and Z being CR.sup.8R.sup.9, or [0038] (c) n is zero and X,
Y and Z together constitute a moiety selected from the group
consisting of ##STR4## [0039] wherein wavy lines are bonds to the
atoms of the depicted ring; [0040] R.sup.6 and R.sup.6' are
independently selected from the group consisting of hydrido,
C.sub.1-C.sub.6-alkanoyl, C.sub.6-aryl-C.sub.1-C.sub.6-alkyl,
aroyl,
bis(C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl)-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkyl, C.sub.1-C.sub.6-haloalkyl,
C.sub.1-C.sub.6-perfluoroalkyl,
C.sub.1-C.sub.6-trifluoromethylalkyl,
C.sub.1-C.sub.6-perfluoroalkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-cycloalkyl, C.sub.3-C.sub.8-heterocycloalkyl,
C.sub.3-C.sub.8-heterocycloalkylcarbonyl, C.sub.6-aryl,
C.sub.5-C.sub.6-heterocyclo, C.sub.5-C.sub.6-heteroaryl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.6-aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryl-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, C.sub.6-arylsulfonyl,
C.sub.1-C.sub.6-alkylsulfonyl, C.sub.5-C.sub.6-heteroarylsulfonyl,
carboxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.4-alkoxycarbonyl-C.sub.1-C.sub.6-alkyl,
aminocarbonyl, C.sub.1-C.sub.6-alkyliminocarbonyl,
C.sub.6-aryliminocarbonyl,
C.sub.5-C.sub.6-heterocycloiminocarbonyl,
C.sub.6-arylthio-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl,
C.sub.6-arylthio-C.sub.3-C.sub.6-alkenyl,
C.sub.1-C.sub.4-alkylthio-C.sub.3-C.sub.6-alkenyl,
C.sub.5-C.sub.6-heteroaryl-C.sub.1-C.sub.6-alkyl,
halo-C.sub.1-C.sub.6-alkanoyl, hydroxy-C.sub.1-C.sub.6-alkanoyl,
thiol-C.sub.1-C.sub.6-alkanoyl, C.sub.3-C.sub.6-alkenyl,
C.sub.3-C.sub.6-alkynyl,
C.sub.1-C.sub.4-alkoxy-C.sub.1-C.sub.4-alkyl,
C.sub.1-C.sub.5-alkoxycarbonyl, aryloxycarbonyl,
NR.sup.8R.sup.9-C.sub.1-C.sub.5-alkylcarbonyl,
hydroxy-C.sub.1-C.sub.5-alkyl, an aminocarbonyl wherein the
aminocarbonyl nitrogen is (i) unsubstituted or (ii) substituted
with one or two radicals independently selected from the group
consisting of C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl and a C.sub.1-C.sub.6-alkanoyl group,
hydroxyaminocarbonyl, an aminosulfonyl group wherein the
aminosulfonyl nitrogen is (i) unsubstituted or (ii) substituted
with one or two radicals independently selected from the group
consisting of C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl and a C.sub.1-C.sub.6-alkanoyl group, an
amino-C.sub.1-C.sub.6-alkylsulfonyl group wherein the
amino-C.sub.1-C.sub.6-alkylsulfonyl nitrogen is (i) unsubstituted
or (ii) substituted with one or two radicals independently selected
from the group consisting of C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.8-cycloalkyl and a
C.sub.1-C.sub.6-alkanoyl group and an amino-C.sub.1-C.sub.6-alkyl
group wherein the aminoalkyl nitrogen is (i) unsubstituted or (ii)
substituted with one or two radicals independently selected from
the group consisting of C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.8-cycloalkyl and a
C.sub.1-C.sub.6-alkanoyl group; [0041] R.sup.7 is selected from the
group consisting of a arylalkyl, aryl, heteroaryl, heterocyclo,
C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.6-alkynyl,
C.sub.3-C.sub.6-alkenyl, C.sub.1-C.sub.6-carboxyalkyl and a
C.sub.1-C.sub.6-hydroxyalkyl group; [0042] R.sup.8 and R.sup.9 and
R.sup.10 and R.sup.11 are independently selected from the group
consisting of a hydrido, hydroxy, C.sub.1-C.sub.6-alkyl, aryl,
ar-C.sub.1-C.sub.6-alkyl, heteroaryl,
heteroar-C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl, thiol-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
aralkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylar-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide or sulfone of
any said thio substituents, perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl and an
amino-C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two radicals
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl, cycloalkyl and
C.sub.1-C.sub.6-alkanoyl, or wherein R.sup.8 and R.sup.9 or
R.sup.10 and R.sup.11 and the carbon to which they are bonded form
a carbonyl group, or wherein R.sup.8 and R.sup.9 or R.sup.10 and
R.sup.11, or R.sup.8 and R.sup.10 together with the atoms to which
they are bonded form a 5- to 8-membered carbocyclic ring, or a 5-
to 8-membered heterocyclic ring containing one or two heteroatoms
that are nitrogen, oxygen, or sulfur, with the proviso that only
one of R.sup.8 and R.sup.9 or R.sup.10 and R.sup.11 is hydroxy;
[0043] R.sup.12 and R.sup.12' are independently selected from the
group consisting of a hydrido, C.sub.1-C.sub.6-alkyl, aryl,
ar-C.sub.1-C.sub.6-alkyl, heteroaryl, heteroaralkyl,
C.sub.2-C.sub.6-alkynyl, C.sub.2-C.sub.6-alkenyl,
thiol-C.sub.1-C.sub.6-alkyl, cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
aryloxy-C.sub.1-C.sub.6-alkyl, amino-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylar-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
c.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide or sulfone of
any said thio substituents, perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl and an
amino-C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two radicals
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl, cycloalkyl and
C.sub.1-C.sub.6-alkanoyl; [0044] R.sup.13 is selected from the
group consisting of a hydrido, benzyl, phenyl,
C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl and a C.sub.1-C.sub.6-hydroxyalkyl group;
and [0045] G-A-R-E-Y is a substituent that preferably has a length
greater than that of a pentyl group, and more preferably has a
length greater than that of a hexyl group. The substituent
G-A-R-E-Y preferably has a length that is less than that of an
icosyl group, and is more preferably less than that of a stearyl
group. In this substituent: [0046] G is an aryl or heteroaryl
group; [0047] A is selected from the group consisting of [0048] (1)
--O--; [0049] (2) --S--; [0050] (3) --NR.sup.17--; [0051] (4)
--CO--N(R.sup.17) or --N(R.sup.17)--Co--, wherein R.sup.17 is
hydrogen, C.sub.1-C.sub.4-alkyl, or phenyl; [0052] (5) --CO--O-- or
--O--CO--; [0053] (6) --O--CO--O--; [0054] (7) --HC.dbd.CH--;
[0055] (8) --NH--CO--NH--; [0056] (9) --C.ident.C--; [0057] (10)
--NH--CO--O-- or --O--CO--NH--; [0058] (11) --N.dbd.N--; [0059]
(12) --NH--NH--; and [0060] (13) --CS--N(R.sup.18)-- or
--N(R.sup.18)--CS--, wherein R.sup.18 is hydrogen
C.sub.1-C.sub.4-alkyl, or phenyl; or [0061] (14) A is absent and G
is bonded directly to R; [0062] R is a moiety selected from the
group consisting of alkyl, alkoxyalkyl, aryl, heteroaryl,
cycloalkyl, heterocycloalkyl, aralkyl, heteroaralkyl,
heterocycloalkylalkyl, cycloalkylalkyl, cycloalkoxyalkyl,
heterocycloalkoxyalkyl, aryloxyalkyl, heteroaryloxyalkyl,
arylthioalkyl, heteroarylthioalkyl, cycloalkylthioalkyl, and a
heterocycloalkylthioalkyl group wherein the aryl or heteroaryl or
cycloalkyl or heterocycloalkyl substituent is (i) unsubstituted or
(ii) substituted with one or two radicals selected from the group
consisting of a halo, alkyl, perfluoroalkyl, perfluoroalkoxy,
perfluoroalkylthio, trifluoromethylalkyl, amino,
alkoxycarbonylalkyl, alkoxy, C.sub.1-C.sub.2-alkylene-dioxy,
hydroxycarbonylalkyl, hydroxycarbonylalkylamino, nitro, hydroxy,
hydroxyalkyl, alkanoylamino, and a alkoxycarbonyl group, and R is
other than alkyl or alkoxyalkyl when A is --O-- or --S--; [0063] E
is selected from the group consisting of [0064] (1)--CO(R.sup.19)--
or --(R.sup.19)CO--, wherein R.sup.19 is a heterocycloalkyl, or a
cycloalkyl group; [0065] (2) --CONH-- or --HNCO--; and [0066] (3)
--CO--; [0067] (4) --SO.sub.2--R.sup.19- or --R.sup.19--SO.sub.2--;
[0068] (5) --SO.sub.2--; [0069] (6) --NH--SO.sub.2-- or
--SO.sub.2--NH--; or [0070] (7) E is absent and R is bonded
directly to Y; and
[0071] Y is absent or is selected from the group consisting of a
hydrido, alkyl, alkoxy, haloalkyl, aryl, aralkyl, cycloalkyl,
heteroaryl, hydroxy, aryloxy, aralkoxy, heteroaryloxy,
heteroaralkyl, perfluoroalkoxy, perfluoroalkylthio,
trifluoromethylalkyl, alkenyl, heterocycloalkyl, cycloalkyl,
trifluoromethyl, alkoxycarbonyl, and a aminoalkyl group, wherein
the aryl or heteroaryl or heterocycloalkyl group is (i)
unsubstituted or (ii) substituted with one or two radicals
independently selected from the group consisting of an alkanoyl,
halo, nitro, aralkyl, aryl, alkoxy, and an amino group wherein the
amino nitrogen is (i) unsubstituted or (ii) substituted with one or
two groups independently selected from hydrido, alkyl, and an
aralkyl group.
[0072] A particularly preferred compound for use in a contemplated
process corresponds in structure to formula III, below, or a
pharmaceutically acceptable salt thereof: ##STR5## [0073] wherein
[0074] m, n, p, X, Z, Y and R.sup.14 are as defined above for
formula II, and the R.sup.3 radical that is defined below is a
sub-set of the previously discussed G-A-R-E-Y substituents.
[0075] Thus, R.sup.3 is a radical that is comprised of a
single-ringed aryl or heteroaryl group that is 5- or 6-membered,
and is itself substituted at its own 4-position when a 6-membered
ring and at its own 3- or 4-position when a 5-membered ring with a
substituent selected from the group consisting of a thiophenoxy,
4-chlorophenoxy, 3-chlorophenoxy, 4-methoxyphenoxy,
3-benzodioxol-5-yloxy, 3,4-dimethylphenoxy, 4-fluorophenoxy,
4-fluorothiophenoxy, phenoxy, 4-trifluoromethoxy-phenoxy,
4-trifluoromethylphenoxy, 4-(trifluoromethylthio)-phenoxy,
4-(trifluoromethylthio)-thiophenoxy, 4-chloro-3-fluorophenoxy,
4-isopropoxyphenoxy, 4-isopropylphenoxy,
(2-methyl-1,3-benzothiazol-5-yl)oxy, 4-(1H-imidazol-1-yl)phenoxy,
4-chloro-3-methylphenoxy, 3-methylphenoxy, 4-ethoxyphenoxy,
3,4-difluorophenoxy, 4-chloro-3-methylphenoxy,
4-fluoro-3-chlorophenoxy, 4-(1H-1,2,4-triazol-1-yl)phenoxy,
3,5-difluorophenoxy, 3,4-dichlorophenoxy, 4-cyclopentylphenoxy,
4-bromo-3-methylphenoxy, 4-bromophenoxy, 4-methylthiophenoxy,
4-phenylphenoxy, 4-benzylphenoxy, 6-quinolinyloxy,
4-amino-3-methylphenoxy, 3-methoxyphenoxy,
5,6,7,8-tetrahydro-2-naphthalenyloxy, 3-hydroxymethylphenoxy,
N-piperidyl, N-piperazinyl and a 4-benzyloxyphenoxy group.
[0076] A more particularly preferred compound for use in a
contemplated process has a structure that corresponds to formula
IV, below, or a pharmaceutically acceptable salt thereof: ##STR6##
[0077] wherein R.sup.3 is as defined above for formula I, more
preferably as defined for formula II (wherein this R.sup.3 group is
the G-A-R-E-Y substituent), and more preferably still as defined
for formula III, and Z is selected group the group consisting of O,
S, NR.sup.6, SO, SO.sub.2, and NSO.sub.2R.sup.7, [0078] wherein
R.sup.6 is selected from the group consisting of hydrido,
C.sub.1-C.sub.5-alkyl, C.sub.1-C.sub.5-alkanoyl, benzyl, benzoyl,
C.sub.3-C.sub.5-alkynyl, C.sub.3-C.sub.5-alkenyl,
C.sub.1-C.sub.3-alkoxy-C.sub.1-C.sub.4-alkyl,
C.sub.3-C.sub.6-cycloalkyl, heteroaryl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.5-hydroxyalkyl, C.sub.1-C.sub.5-carboxyalkyl,
C.sub.1-C.sub.5-alkoxy C.sub.1-C.sub.5-alkylcarbonyl, and
NR.sup.8R.sup.9--C.sub.1-C.sub.5-alkylcarbonyl or
NR.sup.8R.sup.9--C.sub.1-C.sub.5-alkyl wherein R.sup.8 and R.sup.9
are independently hydrido, C.sub.1-C.sub.5-alkyl,
C.sub.1-C.sub.5-alkoxycarbonyl or
aryl-C.sub.1-C.sub.5-alkoxycarbonyl, or NR.sup.8R.sup.9 together
form a heterocyclic ring containing 5- to 8-atoms in the ring; and
[0079] R.sup.7 is selected from the group consisting of an
arylalkyl, aryl, heteroaryl, heterocyclo, C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-alkynyl, C.sub.3-C.sub.6-alkenyl,
C.sub.1-C.sub.6-carboxyalkyl and a C.sub.1-C.sub.6-hydroxyalkyl
group.
[0080] A still more preferred group of compounds for use in a
contemplated process correspond in structure to formula V, below,
or a pharmaceutically acceptable salt thereof: ##STR7## [0081]
wherein [0082] Z is as previously defined in formula IV; [0083] W
and Q are independently oxygen (O), NR.sup.6 or sulfur (S), and
R.sup.6 is as defined in formula IV; and [0084] q is zero or one
such that when q is zero, the trifluoromethyl group is bonded
directly to the depicted phenyl ring.
[0085] The use of a compound of formulas I-V, or a pharmaceutically
acceptable salt of one of those compounds is contemplated in a
before-described process. In addition, the compounds of formulas
II, III, IV and V, and their pharmaceutically acceptable salts are
contemplated compounds of this invention.
[0086] The present invention also contemplates a precursor or
intermediate compound that is useful in preparing a compound of
formulas I-V. Such an intermediate compound corresponds in
structure to formula VI, below: ##STR8## [0087] wherein m, n, p, X,
Z and Y are as defined above for formula II, g is zero, 1 or 2 and
R.sup.24 is R.sup.3 as defined in formulas I, III or IV, is the
substituent G-A-R-E-Y of formula II (formula VIA) or is R.sup.3',
an aryl or heteroaryl group that is substituted with a coupling
substituent reactive for coupling with another moiety (formula
VIB), such as a nucleophilically displaceable leaving group, D.
##STR9##
[0088] Exemplary nucleophilically displaceable leaving groups, D,
include a halo (fluoro, chloro, bromo, or idodo) nitro, azido,
phenylsulfoxido, aryloxy, C.sub.1-C.sub.6-alkoxy, a
C.sub.1-C.sub.6-alkylsulfonate or arylsulfonate group and a
trisubstituted ammonium group in which the three substituents are
independently aryl, ar-C.sub.1-C.sub.6-alkyl or
c.sub.1-C.sub.6-alkyl.
[0089] R.sup.20 is (a) --O--R.sup.21, where R.sup.21 is selected
from the group consisting of a hydrido, C.sub.1-C.sub.6-alkyl,
aryl, ar-C.sub.1-C.sub.6-alkyl group and a pharmaceutically
acceptable cation, or (b) --NH--O--R.sup.22 wherein R.sup.22 is a
selectively removable protecting group such as a
2-tetrahydropyranyl, C.sub.1-C.sub.6-acyl, aroyl, benzyl,
p-methoxybenzyloxycarbonyl (MOZ), benzyloxycarbonyl,
C.sub.1-C.sub.6-alkoxycarbonyl, C.sub.1-C.sub.6-alkoxy-CH.sub.2--,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-CH.sub.2--,
trisubstituted silyl group or o-nitrophenyl group, peptide
synthesis resin and the like. Trisubstituted silyl group is
substituted with C.sub.1-C.sub.6-alkyl, aryl, or
ar-C.sub.1-C.sub.6-alkyl.
[0090] A particularly preferred precursor intermediate to an
intermediate compound of formula VI is an intermediate compound of
formula VII ##STR10## [0091] wherein m, n, p, g, X, Z, Y, D and
R.sup.20 are as defined above for formula VI.
[0092] Among the several benefits and advantages of the present
invention are the provision of compounds and compositions effective
as inhibitors of matrix metalloproteinase activity, the provision
of such compounds and compositions that are effective for the
inhibition of metalloproteinases implicated in diseases and
disorders involving uncontrolled breakdown of connective
tissue.
[0093] More particularly, a benefit of this invention is the
provision of a compound and composition effective for selectively
inhibiting certain metalloproteinases, such as one or more of
MMP-2, MMP-9 and MMP-13, associated with pathological conditions
such as, for example, rheumatoid arthritis, osteoarthritis, septic
arthritis, corneal, epidermal or gastric ulceration, tumor
metastasis, invasion or angiogenesis, periodontal disease,
proteinuria, Alzheimer's Disease, coronary thrombosis and bone
disease.
[0094] An advantage of the invention is the provision of compounds,
compositions and methods effective for treating such pathological
conditions by selective inhibition of a metalloproteinase such as
MMP-2, MMP-9 or MMP-13 associated with such conditions with minimal
side effects resulting from inhibition of other metalloproteinases,
such as MMP-1, whose activity is necessary or desirable for normal
body function.
[0095] Yet another advantage of the invention is the provision of a
process for preparing such compounds.
[0096] Another benefit is the provision of a method for treating a
pathological condition associated with abnormal matrix
metalloproteinase activity.
[0097] A further advantage of the invention is the provision of a
process for preparing such compositions.
[0098] Still further benefits and advantages of the invention will
be apparent to the skilled worker from the disclosure that
follows.
DETAILED DESCRIPTION OF THE INVENTION
[0099] In accordance with the present invention, it has been
discovered that certain aromatic sulfone hydroxamic acids
(hydroxamates) are effective for inhibition of matrix
metalloproteinases ("MMPs") believed to be associated with
uncontrolled or otherwise pathological breakdown of connective
tissue. In particular, it has been found that these certain
aromatic sulfone hydroxamates are effective for inhibition of one
or more enzymes such as MMP-2, MMP-9 and MMP-13, which can be
particularly destructive to tissue if present or generated in
abnormal quantities or concentrations, and thus exhibit a
pathological activity. Included in that pathological activity is
the assistance of tumors and tumor cells in the process of
penetrating basement membrane, and developing a new or improved
blood supply; i.e., angiogenesis.
[0100] Moreover, it has been discovered that these aromatic sulfone
hydroxamates are selective in the inhibition of one or more of
MMP-2, MMP-9 and MMP-13 without excessive inhibition of other
collagenases essential to normal bodily function such as tissue
turnover and repair. More particularly, it has been found that a
contemplated aromatic sulfone hydroxamate of the invention, or a
pharmaceutically acceptable salt thereof, is particularly active in
inhibiting of one or more of MMP-2, MMP-9 and MMP-13 in an in vitro
assay that is predictive of in vivo activity. In addition, while
being selective for one or more of MMP-2, MMP-9 and MMP-13, a
contemplated aromatic sulfone hydroxamate, or its salt, has a
limited or minimal in vitro inhibitory effect on MMP-1.
[0101] There is thus a substantial difference in the activity of a
compound used in a contemplated process toward one or more of
MMP-2, MMP-9 and MMP-13 and MMP-1. This substantial difference is
assayed using the in vitro inhibition assay discussed in the
examples. A substantial difference in activity corresponds to a
compound exhibiting an IC.sub.50 value against one or more of
MMP-2, MMP-9 and MMP-13 that is about 0.1 times that of the
compound against MMP-1, and more preferably 0.01 times that against
MMP-1 and most preferably 0.001 times that against MMP-1, or more.
Indeed, some compounds exhibit selectivity differences measured by
IC.sub.50 values that exceed the bounds of the assay at the number
100,000-fold. These selectivities are illustrated in the Inhibition
Tables hereinafter.
[0102] Put differently, a contemplated compound can inhibit the
activity of MMP-2 compared to MMP-9 or MMP-13 and MMP-1. Similarly,
a contemplated compound can inhibit the activity of MMP-13 and
MMP-2, while exhibiting less inhibition against MMP-1 and MMP-9. In
addition, a contemplated compound can inhibit the activity of a MMP
enzyme, while having less of an effect on tumor necrosis factor
release.
[0103] The advantages of the selectivity of a contemplated compound
can be appreciated, without wishing to be bound by theory, by
considering the therapeutic uses the compounds. For example,
inhibition of MMP-1 is suggested to be undesirable due to its role
as a housekeeping enzyme, helping to maintain normal connective
tissue turnover and repair. Inhibition of MMP-1 can lead to
toxicities or side effects such as such as joint or connective
tissue deterioration and pain. On the other hand, MMP-13 has been
suggested to be intimately involved in the destruction of joint
components in diseases such as osteoarthritis. Thus, potent and
selective inhibition of MMP-13 compared with inhibition MMP-1 is
highly desirable because a MMP-13 inhibitor can have a positive
effect on disease progression in a patient in addition to having an
anti-inflammatory effect.
[0104] Inhibition of MMP-2 and MMP-9 can be desirable for
inhibition of tumor growth, metastasis, invasion and/or
angiogenesis. A profile of selective inhibition of MMP-2 and MMP-9
relative to MMP-1 can provide a therapeutic advantage.
[0105] Yet another advantage of a contemplated compound is the
selectivity with respect to tumor necrosis factor release and/or
tumor necrosis factor receptor release that provides the physician
with another factor to help select the best drug for a particular
patient. While not wishing to be bound by theory, it is believed
that there are several factors to this type of selectivity to be
considered.
[0106] The first is that presence of tumor necrosis factor can be
desirable for the control of cancer in the organism, so long as TNF
is not present in a toxic excess. Thus, uncontrolled inhibition of
release of TNF can be counterproductive and actually can be
considered an adverse side effect even in cancer patients. In
addition, selectivity with respect to inhibition of the release of
the tumor necrosis factor receptor can also be desirable. The
presence of that receptor can be desirable for maintaining a
controlled tumor necrosis level in the mammal by binding excess
TNF.
[0107] A contemplated selective MMP inhibitor compound useful in a
contemplated process can be administered to by various routes and
provide adequate therapeutic blood levels of enzymatically active
inhibitor. A compound can be administered, for example, by the oral
(IG, PO) or intravenous (IV) routes. Oral administration is
advantageous if the patient is ambulatory, not hospitalized,
physically able and sufficiently responsible to take drug at the
required intervals. This is true even if the person is being
treated with more than one drug for one or more diseases. On the
other hand, IV drug administration is an advantage in a hospital
setting wherein the dose and thus the blood levels can well
controlled. A contemplated inhibitor can also be formulated for IM
administration if desired. This route of administration can be
desirable for the administration of prodrugs or regular drug
delivery to patients that are either physically weak or have a poor
compliance record or require constant drug blood levels.
[0108] Thus, in one embodiment, the present invention is directed
to a treatment process that comprises administering a contemplated
aromatic sulfone hydroxamic acid metalloprotease inhibitor, or a
pharmaceutically acceptable salt thereof, in an effective amount to
a host mammal having a condition associated with pathological
matrix metalloprotease activity. A contemplated aromatic sulfone
hydroxamate inhibitor compound useful in such a process inhibits
the activity of one or more of MMP-2, MMP-9 and MMP-13, and
exhibits substantially less inhibitory activity against at least
MMP-1 in the in vitro assay noted above and discussed in detail
hereinbelow. An aromatic sulfone hydroxamate inhibitor compound for
use in a contemplated process corresponds in structure to formula
I, below: ##STR11## [0109] wherein
[0110] In one embodiment, R.sup.1 and R.sup.2 are both hydrido. In
another embodiment, R.sup.1 and R.sup.2 together with the atoms to
which they are bonded form a 5- to 8-membered ring containing one,
two or three heteroatoms in the ring that are oxygen, sulfur or
nitrogen.
[0111] It is preferred that R.sup.1 and R.sup.2 together with the
atoms to which they are bonded form a five- to eight-membered ring
that contains one or two heteroatoms in the ring, although R.sup.1
and R.sup.2 together with the atoms to which they are bonded form a
5- to 8-membered ring containing one, two or three heteroatoms. The
heterocyclic ring can itself also be substituted with up to six
C.sub.1-C.sub.6-alkyl groups or groups that comprise a another 5-
to 8-membered carbocyclic or heterocyclic ring, an amino group, or
contain one or two oxo (carbonyl) groups.
[0112] R.sup.3 in formula I is an optionally substituted aryl or
optionally substituted heteroaryl radical. That R.sup.3 radical is
selected from the group consisting of an aryl, heteroaryl, aralkyl,
heteroaralkyl, aralkoxy, heteroaralkoxy, aralkoxyalkyl,
aryloxyalkyl, aralkanoylalkyl, arylcarbonylalkyl, aralkylaryl,
aryloxyalkylaryl, aralkoxyaryl, arylazoaryl, arylhydrazinoaryl,
alkylthioaryl, arylthioalkyl, alkylthioaralkyl, aralkylthioalkyl,
an aralkylthioaryl radical, the sulfoxide or sulfone of any of the
thio substituents, and a fused ring structure comprising two or
more 5- or 6-membered rings selected from the group consisting of
aryl, heteroaryl, carbocyclic and heterocyclic.
[0113] The substituent of which R.sup.3 is comprised itself is
unsubstituted or substituted with one or more substituents
independently selected from the group consisting of a cyano,
perfluoroalkyl, trifluoromethylalkyl, hydroxy, halo, alkyl, alkoxy,
nitro, thiol, hydroxycarbonyl, aryloxy, arylthio, aralkyl, aryl,
heteroaryloxy, heteroarylthio, heteroaralkyl, cycloalkyl,
heterocyclooxy, heterocyclothio, heterocycloamino, cycloalkyloxy,
cycloalkylthio, heteroaralkoxy, heteroaralkylthio, aralkoxy,
aralkylthio, aralkylamino, heterocyclo, heteroaryl, arylazo,
hydroxycarbonylalkoxy, alkoxycarbonylalkoxy, alkanoyl,
arylcarbonyl, aralkanoyl, alkanoyloxy, aralkanoyloxy, hydroxyalkyl,
hydroxyalkoxy, alkylthio, alkoxyalkylthio, alkoxycarbonyl,
aryloxyalkoxyaryl, arylthioalkylthioaryl, aryloxyalkylthioaryl,
arylthioalkoxyaryl, hydroxycarbonylalkoxy,
hydroxycarbonylalkylthio, alkoxycarbonylalkoxy,
alkoxycarbonylalkylthio, amino, [0114] wherein the amino nitrogen
is (i) unsubstituted, or (ii) substituted with one or two
substituents that are independently selected from the group
consisting of an alkyl, aryl, heteroaryl, aralkyl, cycloalkyl,
aralkoxycarbonyl, alkoxycarbonyl, arylcarbonyl, aralkanoyl,
heteroarylcarbonyl, heteroaralkanoyl and an alkanoyl group, or
(iii) wherein the amino nitrogen and two substituents attached
thereto form a 5- to 8-membered heterocyclo or heteroaryl ring
containing zero to two additional heteroatoms that are nitrogen,
oxygen or sulfur and which ring itself is (a) unsubstituted or (b)
substituted with one or two groups independently selected from the
group consisting of an aryl, alkyl, heteroaryl, aralkyl,
heteroaralkyl, hydroxy, alkoxy, alkanoyl, cycloalkyl,
heterocycloalkyl, alkoxycarbonyl, hydroxyalkyl, trifluoromethyl,
benzofused heterocycloalkyl, hydroxyalkoxyalkyl, aralkoxycarbonyl,
hydroxycarbonyl, aryloxycarbonyl, benzofused heterocycloalkoxy,
benzofused cycloalkylcarbonyl, heterocyclo-alkylcarbonyl, and a
cycloalkylcarbonyl group, carbonylamino wherein the carboxamido
nitrogen is (i) unsubstituted, or (ii) is the reacted amine of an
amino acid, or (iii) substituted with one or two radicals selected
from the group consisting of an alkyl, hydroxyalkyl,
hydroxyheteroaralkyl, cycloalkyl, aralkyl, trifluoromethylalkyl,
heterocycloalkyl, benzofused heterocycloalkyl, benzofused
heterocycloalkyl, benzofused cycloalkyl, and an
N,N-dialkylsubstituted alkylamino-alkyl group, or (iv) the
carboxamido nitrogen and two substituents bonded thereto together
form a 5- to 8-membered heterocyclo, heteroaryl or benzofused
heterocycloalkyl ring that is itself unsubstituted or substituted
with one or two radicals independently selected from the group
consisting of an alkyl, alkoxycarbonyl, nitro, heterocycloalkyl,
hydroxy, hydroxycarbonyl, aryl, aralkyl, heteroaralkyl and an amino
group, [0115] wherein the amino nitrogen is (i) unsubstituted, or
(ii) substituted with one or two substituents that are
independently selected from the group consisting of alkyl, aryl,
and heteroaryl, or (iii) wherein the amino nitrogen and two
substituents attached thereto form a 5- to 8-membered heterocyclo
or heteroaryl ring, and an aminoalkyl group wherein the aminoalkyl
nitrogen is (i) unsubstituted, or (ii) substituted with one or two
substituents independently selected from the group consisting of an
alkyl, aryl, aralkyl, cycloalkyl, aralkoxycarbonyl, alkoxycarbonyl,
and an alkanoyl group, or (iii) wherein the aminoalkyl nitrogen and
two substituents attached thereto form a 5- to 8-membered
heterocyclo or heteroaryl ring. A compound of formula I can also be
used in the form of a pharmaceutically acceptable salt.
[0116] The R.sup.3 radical has a length that is greater than that
of a pentyl group [a --(CH.sub.2).sub.4CH.sub.3 chain], and is more
preferably greater than about the length of a hexyl group [a
--(CH.sub.2).sub.5CH.sub.3 chain]. A R.sup.3 group has a length
that is less than that of an icosyl group [eicosyl; a
--(CH.sub.2).sub.19CH.sub.3 chain), and more preferably, a length
that is less than that of a stearyl group [a
--(CH.sub.2).sub.17CH.sub.3 chain). When rotated about an axis
drawn through the SO.sub.2-bonded 1-position and the
substituent-bonded 4-position of a 6-membered ring or the
SO.sub.2-bonded 1-position and substituent-bonded 3- or 4-position
of a 5-membered ring, a contemplated R.sup.3 radical defines a
three-dimensional volume whose widest dimension has the width of
about one furanyl ring to about two phenyl rings in a direction
transverse to that axis to rotation.
[0117] Where the SO.sub.2-linked R.sup.3 radical is 4-phenoxyphenyl
for purposes of illustration, a contemplated compound can be viewed
as a phenoxyphenylsulfone derivative of the desired 5- to
8-membered ring N-hydroxycarboxamide. Exemplary compounds can
therefore be named: [0118]
N-hydroxy-1-methyl-[4-(phenoxyphenylsulfonyl)]-4-piperidinecarboxamide,
[0119]
N-hydroxy-[4-(phenoxyphenylsulfonyl)]tetrahydro-2H-pyran-4-carbox-
amide, [0120]
N-hydroxy-1-methyl-[2,6-dioxo-4-(phenoxyphenylsulfonyl)]-4-piperidinecarb-
oxamide, [0121]
N-hydroxy-2,2-dimethyl-[5-(phenoxyphenyl-sulfonyl)]-1,3-dioxane-5-carboxa-
mide, [0122]
N-hydroxy-1,2-dimethyl-6-oxo-[4-(phenoxyphenyl-sulfonyl)]-4-piperidinecar-
boxamide, [0123]
N-hydroxy-2,2,6,6,tetramethyl-[4-(phenoxyphenyl-sulfonyl)]-4-piperidineca-
rboxamide, [0124]
N-hydroxy-1,3-dimethyl-[5-(phenoxyphenyl-sulfonyl)]-hexahydro-5-pyrimidin-
ecarboxamide, [0125]
2-amino-N-hydroxy-[5-(phenoxyphenylsulfonyl)]-1,4,5,6-tetrahydro-5-pyrimi-
dinecarboxamide, [0126]
N-hydroxy-1,1-dioxo-[4-(phenoxyphenylsulfonyl)]-1(.lamda.6),2,6-thiadizin-
ane-4-carboxamide, [0127]
N-hydroxy-2-oxo-[5-(phenoxyphenylsulfonyl)]-hexahydro-5-pyrimidinecarboxa-
mide, [0128]
N-hydroxy-[2-(phenoxyphenylsulfonyl)]tetrahydro-2-furancarboxamide,
[0129]
N-hydroxy-1-methyl-[2-(phenoxyphenylsulfonyl)]-2-pyrrolidinecarbo-
xamide, [0130]
N-hydroxy-2-methyl-[4-(phenoxyphenylsulfonyl)]-4-piperidinecarboxamide,
[0131]
N-hydroxy-[3-(phenoxyphenylsulfonyl)]-8-azabicyclo[3.2.1]octane-3-
-carboxamide, [0132]
N-hydroxy-1,1-dioxo-[4-(phenoxyphenylsulfonyl)]-hexahydro-1(lambda6)-thio-
pyran-4-carboxamide, [0133]
N-hydroxy-[3-(phenoxyphenylsulfonyl)]tetrahydro-3-furancarboxamide,
[0134]
N-hydroxy-[3-(phenoxyphenylsulfonyl)]-3-pyrrolidinecarboxamide,
[0135]
N-hydroxy-4-[[4-(phenylthio)phenyl]sulfonyl]-1-(2-propynyl)-4-pip-
eridinecarboxamide, monohydrochloride, [0136]
N-hydroxy-4-[[4-(phenylthio)phenyl]sulfonyl]-1-(2-propynyl)-4-piperidinec-
arboxamide, monomethanesulfonate,
tetrahydro-N-hydroxy-4-[[4-[4-[(trifluoromethyl]phenoxy]phenyl]-sulfonyl]-
-2H-pyran-4-carboxamide, [0137]
N-hydroxy-1-(4-pyridinylmethyl)-4-[[4-[4-(trifluoromethyl)phenoxy]phenyl]-
-sulfonyl]-4-piperidinecarboxamide, hydrochloride, [0138]
N-hydroxy-1-(3-pyridinylmethyl)-4-[[4-[4-trifluoromethyl)phenoxy]phenyl]--
sulfonyl]-4-piperidinecarboxamide, dihydrochloride, [0139]
N-hydroxy-1-(2-pyridinylmethyl)-4-[[4-[4-(trifluoromethyl)phenoxy]phenyl]-
-sulfonyl]-4-piperidinecarboxamide, dihydrochloride,
hydroxy-1-(3-pyridinylmethyl)-4-[[4-[4-(trifluoromethoxy)phenoxy]phenyl]--
sulfonyl]-4-piperidinecarboxamide, dihydrochloride, [0140]
N-hydroxy-1-(2-methoxyethyl)-4-[[4-[4-(trifluoromethoxy)phenoxy]phenyl]su-
lfonyl}-4-piperidinecarboxamide, monohydrochloride, [0141]
N-hydroxy-1-(2-methoxyethyl)-4-[[4-[4-(trifluoromethyl)phenoxy]phenyl]sul-
fonyl}-4-piperidinecarboxamide, monohydrochloride, [0142]
N-hydroxy-1-(2-methoxyethyl)-4-[[4-[4-[(trifluoromethyl)thio]phenoxy]phen-
yl]sulfonyl]-4-piperidinecarboxamide, monohydrochloride, [0143]
1-cyclopropyl-N-hydroxy-4-[[4-[4-(trifluoro-methyl)phenoxy]phenyl]sulfony-
l]-4-piperidine-carboxamide, monohydrochloride, and the like.
[0144] Several exemplary R.sup.1 and R.sup.2 groups that together
form a contemplated heterocyclic ring are shown in the Tables that
follow hereinafter, as well as in the descriptions of those 5- to
8-membered rings and the specific Examples, as are several
contemplated aromatic sulfone hydroxamic acid compounds.
[0145] In more preferred practice, R.sup.1 and R.sup.2 of formula I
together with the atom to which they are bonded form a 5- to
8-membered ring that contains one, two or three heteroatoms. Most
preferably, that ring is a 6-membered ring that contains one
heteroatom located at the 4-position relative to the position at
which the SO.sub.2 group is bonded. Other preferred compounds for
use in a contemplated process correspond in structure to one or
more of formulas II, III, IV or V, which are discussed
hereinafter.
[0146] In one embodiment, a preferred compound used in a
contemplated process has a structure that corresponds to formula
II, below: ##STR12## [0147] wherein [0148] R.sup.14 is hydrido, a
pharmaceutically acceptable cation or C(W)R.sup.15 where W is O or
S and R.sup.15 is selected from the group consisting of an
C.sub.1-C.sub.6-alkyl, aryl, C.sub.1-C.sub.6-alkoxy,
heteroaryl-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl, aryloxy,
ar-C.sub.1-C.sub.6-alkoxy, ar-C.sub.1-C.sub.6-alkyl, heteroaryl and
amino C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two
substituents independently selected from the group consisting of an
C.sub.1-C.sub.6-alkyl, aryl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkoxycarbonyl, C.sub.1-C.sub.6-alkoxycarbonyl,
and C.sub.1-C.sub.6-alkanoyl radical, or (iii) wherein the amino
C.sub.1-C.sub.6-alkyl nitrogen and two substituents attached
thereto form a 5- to 8-membered heterocyclo or heteroaryl ring;
[0149] m is zero, 1 or 2; [0150] n is zero, 1 or 2; [0151] p is
zero, 1 or 2; [0152] the sum of m+n+p=1, 2, 3 or 4; [0153] (a) one
of X, Y and Z is selected from the group consisting of C(O),
NR.sup.6, O, S, S(O), S(O).sub.2 and NS(O).sub.2R.sup.7, and the
remaining two of X, Y and Z are CR.sup.8R.sup.9, and
CR.sup.10R.sup.11, or [0154] (b) X and Z or Z and Y together
constitute a moiety that is selected from the group consisting of
NR.sup.6C(O), NR.sup.6S(O), NR.sup.6S(O).sub.2, NR.sup.6S,
NR.sup.60, SS, NR.sup.6NR.sup.6 and OC(O), with the remaining one
of X, Y and Z being CR.sup.8R.sup.9, or [0155] (c) n is zero and X,
Y and Z together constitute a moiety selected from the group
consisting of ##STR13## [0156] wherein wavy lines are bonds to the
atoms of the depicted ring; [0157] R.sup.6 and R.sup.6' are
independently selected from the group consisting of hydrido,
C.sub.1-C.sub.6-alkanoyl, C.sub.6-aryl-C.sub.1-C.sub.6-alkyl,
aroyl,
bis(C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl)-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkyl, C.sub.1-C.sub.6-haloalkyl,
C.sub.1-C.sub.6-perfluoroalkyl,
C.sub.1-C.sub.6-trifluoromethylalkyl,
C.sub.1-C.sub.6-perfluoroalkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-cycloalkyl, C.sub.3-C.sub.8-heterocycloalkyl,
C.sub.3-C.sub.8-heterocycloalkylcarbonyl, C.sub.6-aryl,
C.sub.5-C.sub.6-heterocyclo, C.sub.5-C.sub.6-heteroaryl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.6-aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryl-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, C.sub.6-arylsulfonyl,
C.sub.1-C.sub.6-alkylsulfonyl, C.sub.5-C.sub.6-heteroarylsulfonyl,
carboxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.4-alkoxycarbonyl-C.sub.1-C.sub.6-alkyl,
aminocarbonyl, C.sub.1-C.sub.6-alkyliminocarbonyl,
C.sub.6-aryliminocarbonyl,
C.sub.5-C.sub.6-heterocycloiminocarbonyl,
C.sub.6-arylthio-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl,
C.sub.6-arylthio-C.sub.3-C.sub.6-alkenyl,
C.sub.1-C.sub.4-alkylthio-C.sub.3-C.sub.6-alkenyl,
C.sub.5-C.sub.6-heteroaryl-C.sub.1-C.sub.6-alkyl,
halo-C.sub.1-C.sub.6-alkanoyl, hydroxy-C.sub.1-C.sub.6-alkanoyl,
thiol-C.sub.1-C.sub.6-alkanoyl, C.sub.3-C.sub.6-alkenyl,
C.sub.3-C.sub.6-alkynyl,
C.sub.1-C.sub.4-alkoxy-C.sub.1-C.sub.4-alkyl,
C.sub.1-C.sub.5-alkoxycarbonyl, aryloxycarbonyl,
NR.sup.8R.sup.9--C.sub.1-C.sub.5-alkylcarbonyl,
hydroxy-C.sub.1-C.sub.5-alkyl, an aminocarbonyl wherein the
aminocarbonyl nitrogen is (i) unsubstituted or (ii) substituted
with one or two radicals independently selected from the group
consisting of C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl and a C.sub.1-C.sub.6-alkanoyl group,
hydroxyaminocarbonyl, an aminosulfonyl group wherein the
aminosulfonyl nitrogen is (i) unsubstituted or (ii) substituted
with one or two radicals independently selected from the group
consisting of C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl and a C.sub.1-C.sub.6-alkanoyl group, an
amino-C.sub.1-C.sub.6-alkylsulfonyl group wherein the
amino-C.sub.1-C.sub.6-alkylsulfonyl nitrogen is (i) unsubstituted
or (ii) substituted with one or two radicals independently selected
from the group consisting of C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.8-cycloalkyl and a
C.sub.1-C.sub.6-alkanoyl group and an amino-C.sub.1-C.sub.6-alkyl
group wherein the aminoalkyl nitrogen is (i) unsubstituted or (ii)
substituted with one or two radicals independently selected from
the group consisting of C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.8-cycloalkyl and a
C.sub.1-C.sub.6-alkanoyl group; [0158] R.sup.7 is selected from the
group consisting of a benzyl, phenyl, C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-alkynyl, C.sub.3-C.sub.6-alkenyl and a
C.sub.1-C.sub.6-hydroxyalkyl group; [0159] R.sup.8 and R.sup.9 and
R.sup.10 and R.sup.11 are independently selected from the group
consisting of a hydrido, hydroxy, C.sub.1-C.sub.6-alkyl, aryl,
ar-C.sub.1-C.sub.6-alkyl, heteroaryl,
heteroar-C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl, thiol-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.11-6-alkyl,
aralkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylar-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide or sulfone of
any said thio substituents, perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl and an
amino-C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two radicals
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl, cycloalkyl and
C.sub.1-C.sub.6-alkanoyl, or wherein R.sup.8 and R.sup.9 or
R.sup.10 and R.sup.11 and the carbon to which they are bonded form
a carbonyl group, or wherein R.sup.8 and R.sup.9 or R.sup.10 and
R.sup.11, or R.sup.8 and R.sup.10 together with the atoms to which
they are bonded form a 5- to 8-membered carbocyclic ring, or a 5-
to 8-membered heterocyclic ring containing one or two heteroatoms
that are nitrogen, oxygen, or sulfur, with the proviso that only
one of R.sup.8 and R.sup.9 or R.sup.10 and R.sup.11 is hydroxy;
[0160] R.sup.12 and R.sup.12' are independently selected from the
group consisting of a hydrido, C.sub.1-C.sub.6-alkyl, aryl,
ar-C.sub.1-C.sub.6-alkyl, heteroaryl, heteroaralkyl,
C.sub.2-C.sub.6-alkynyl, C.sub.2-C.sub.6-alkenyl,
thiol-C.sub.1-C.sub.6-alkyl, cycloalkyl,
cycloalkyl-C.sub.1-CG-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
aryloxy-C.sub.1-C.sub.6-alkyl, amino-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylar-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide or sulfone of
any said thio substituents, perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl and an
amino-C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two radicals
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl, cycloalkyl and
C.sub.1-C.sub.6-alkanoyl; [0161] R.sup.13 is selected from the
group consisting of a hydrido, benzyl, phenyl,
C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl and a C.sub.1-C.sub.6-hydroxyalkyl group;
and [0162] G-A-R-E-Y is a substituent that preferably has a length
greater than that of a pentyl group, and more preferably has a
length greater than that of a hexyl group. The substituent
G-A-R-E-Y preferably has a length that is less than that of an
icosyl group, and is more preferably less than that of a stearyl
group. In this substituent: [0163] G is an aryl or heteroaryl
group; [0164] A is selected from the group consisting of [0165] (1)
--O--; [0166] (2) --S--; [0167] (3) --NR.sup.17--; [0168] (4)
--CO--N(R.sup.17) or --N(R.sup.17)--Co--, wherein R.sup.17 is
hydrogen, C.sub.1-C.sub.4-alkyl, or phenyl; [0169] (5) --CO--O-- or
--O--CO--; [0170] (6) --O--CO--O--; [0171] (7) --HC.dbd.CH--;
[0172] (8) --NH--CO--NH--; [0173] (9) --C.ident.C--; [0174] (10)
--NH--CO--O-- or --O--CO--NH--; [0175] (11) --N.dbd.N--; [0176]
(12) --NH--NH--; and [0177] (13) --CS--N(R.sup.18)-- or
--N(R.sup.18)--CS--, wherein R.sup.18 is hydrogen
C.sub.1-C.sub.4-alkyl, or phenyl; or [0178] (14) A is absent and G
is bonded directly to R; [0179] R is a moiety selected from the
group consisting of alkyl, alkoxyalkyl, aryl, heteroaryl,
cycloalkyl, heterocycloalkyl, aralkyl, heteroaralkyl,
heterocycloalkylalkyl, cycloalkylalkyl, cycloalkoxyalkyl,
heterocycloalkoxyalkyl, aryloxyalkyl, heteroaryloxyalkyl,
arylthioalkyl, heteroarylthioalkyl, cycloalkylthioalkyl, and a
heterocycloalkylthioalkyl group wherein the aryl or heteroaryl or
cycloalkyl or heterocycloalkyl substituent is (i) unsubstituted or
(ii) substituted with one or two radicals selected from the group
consisting of a halo, alkyl, perfluoroalkyl, perfluoroalkoxy,
perfluoroalkylthio, trifluoromethylalkyl, amino,
alkoxycarbonylalkyl, alkoxy, C.sub.1-C.sub.2-alkylene-dioxy,
hydroxycarbonylalkyl, hydroxycarbonylalkylamino, nitro, hydroxy,
hydroxyalkyl, alkanoylamino, and a alkoxycarbonyl group, and R is
other than alkyl or alkoxyalkyl when A is --O-- or --S--; [0180] E
is selected from the group consisting of [0181] (1)--CO(R.sup.19)--
or --(R.sup.19)CO--, wherein R.sup.19 is a heterocycloalkyl, or a
cycloalkyl group; [0182] (2) --CONH-- or --HNCO--; and [0183] (3)
--CO--; [0184] (4) --SO.sub.2--R.sup.19- or --R.sup.19--SO.sub.2--;
[0185] (5) --SO.sub.2--; [0186] (6) --NH--SO.sub.2-- or
--SO.sub.2--NH--; or [0187] (7) E is absent and R is bonded
directly to Y; and
[0188] Y is absent or is selected from the group consisting of a
hydrido, alkyl, alkoxy, haloalkyl, aryl, aralkyl, cycloalkyl,
heteroaryl, hydroxy, aryloxy, aralkoxy, heteroaryloxy,
heteroaralkyl, perfluoroalkoxy, perfluoroalkylthio,
trifluoromethylalkyl, alkenyl, heterocycloalkyl, cycloalkyl,
trifluoromethyl, alkoxycarbonyl, and a aminoalkyl group, wherein
the aryl or heteroaryl or heterocycloalkyl group is (i)
unsubstituted or (ii) substituted with one or two radicals
independently selected from the group consisting of an alkanoyl,
halo, nitro, aralkyl, aryl, alkoxy, and an amino group wherein the
amino nitrogen is (i) unsubstituted or (ii) substituted with one or
two groups independently selected from hydrido, alkyl, and an
aralkyl group.
[0189] The substituent -G-A-R-E-Y preferably contains two to four
carbocyclic or heterocyclic rings, including the aryl or heteroaryl
group, G. More preferably, each of those rings is 6-membered.
Additional separate preferences for a compound of formula II
include: (a) that A is --O-- or --S--, (b) R is an aryl,
heteroaryl, cycloalkyl or heterocycloalkyl group, (c) E is absent,
and (d) Y is selected from the group consisting of hydrido, an
alkyl, alkoxy, perfluoroalkoxy and a perfluoroalkylthio group.
[0190] A more preferred compound for use in a contemplated process
has a structure that corresponds to formula III, below: ##STR14##
[0191] wherein R.sup.3 is a single-ringed aryl or heteroaryl group
that is 5- or 6-membered, and is itself substituted at its own
4-position when a 6-membered ring and at its own 3- or 4-position
when a 5-membered ring with a substituent selected from the group
consisting of a thiophenoxy, 4-chloro-phenoxy, 3-chlorophenoxy,
4-methoxyphenoxy, 3-benzodioxol-5-yloxy, 3,4-dimethylphenoxy,
4-fluoro-phenoxy, 4-fluorothiophenoxy, phenoxy,
4-trifluoro-methoxyphenoxy, 4-trifluoromethylphenoxy,
4-(trifluoromethylthio)phenoxy,
4-(trifluoromethyl-thio)thiophenoxy, 4-chloro-3-fluorophenoxy,
4-isopropoxyphenoxy, 4-isopropylphenoxy,
(2-methyl-1,3-benzothiazol-5-yl)oxy, 4-(1H-imidazol-1-yl)phenoxy,
4-chloro-3-methylphenoxy, 3-methyl-phenoxy, 4-ethoxyphenoxy,
3,4-difluorophenoxy, 4-chloro-3-methylphenoxy,
4-fluoro-3-chlorophenoxy, 4-(1H-1,2,4-triazol-1-yl)phenoxy,
3,5-difluorophenoxy, 3,4-dichlorophenoxy, 4-cyclopentylphenoxy,
4-bromo-3-methylphenoxy, 4-bromophenoxy, 4-methylthiophenoxy,
4-phenylphenoxy, 4-benzylphenoxy, 6-quinolinyloxy,
4-amino-3-methylphenoxy, 3-methoxyphenoxy,
5,6,7,8-tetrahydro-2-naphthalenyloxy, 3-hydroxymethylphenoxy, and a
4-benzyloxyphenoxy group; [0192] R.sup.14 is hydrido, a
pharmaceutically acceptable cation or C(W)R.sup.15 where W is O or
S and R.sup.15 is selected from the group consisting of an
C.sub.1-C.sub.6-alkyl, aryl, C.sub.1-C.sub.6-alkoxy,
heteroaryl-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl, aryloxy,
ar-C.sub.1-C.sub.6-alkoxy, ar-C.sub.1-C.sub.6-alkyl, heteroaryl and
amino C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two
substituents independently selected from the group consisting of an
C.sub.1-C.sub.6-alkyl, aryl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkoxycarbonyl, C.sub.1-C.sub.6-alkoxycarbonyl,
and a C.sub.1-C.sub.6-alkanoyl radical, or (iii) wherein the amino
C.sub.1-C.sub.6-alkyl nitrogen and two substituents attached
thereto form a 5- to 8-membered heterocyclo or heteroaryl ring;
[0193] m is zero, 1 or 2; [0194] n is zero, 1 or 2; [0195] p is
zero, 1 or 2; [0196] the sum of m+n+p=1, 2, 3 or 4; [0197] (a) one
of X, Y and Z is selected from the group consisting of C(O),
NR.sup.6, O, S, S(O), S(O).sub.2 and NS(O).sub.2R.sup.7, and the
remaining two of X, Y and Z are CR.sup.8R.sup.9, and
CR.sup.10R.sup.11, or [0198] (b) X and Z or Z and Y together
constitute a moiety that is selected from the group consisting of
NR.sup.6C(O), NR.sup.6S(O), NR.sup.6S(O).sub.2, NR.sup.6S,
NR.sup.6O, SS, NR.sup.6NR.sup.6 and OC(O), with the remaining one
of X, Y and Z being CR.sup.8R.sup.9, or [0199] (c) n is zero and X,
Y and Z together constitute a moiety selected from the group
consisting of ##STR15## [0200] wherein wavy lines are bonds to the
atoms of the depicted ring; [0201] R.sup.6 and R.sup.6' are
independently selected from the group consisting of hydrido,
C.sub.1-C.sub.6-alkanoyl, C.sub.6-aryl-C.sub.1-C.sub.6-alkyl,
aroyl,
bis(C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl)-C.sub.1-C.sub.6-alkylC.-
sub.1-C.sub.6-alkyl, C.sub.1-C.sub.6-haloalkyl,
C.sub.1-C.sub.6-perfluoroalkyl,
C.sub.1-C.sub.6-trifluoromethylalkyl,
C.sub.1-C.sub.6-perfluoroalkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-cycloalkyl, C.sub.3-C.sub.8-heterocycloalkyl,
C.sub.3-C.sub.8-heterocycloalkylcarbonyl, C.sub.6-aryl,
C.sub.5-C.sub.6-heterocyclo, C.sub.5-C.sub.6-heteroaryl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.6-aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryl-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, C.sub.6-arylsulfonyl,
C.sub.1-C.sub.6-alkylsulfonyl, C.sub.5-C.sub.6-heteroarylsulfonyl,
carboxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.4-alkoxycarbonyl-C.sub.1-C.sub.6-alkyl,
aminocarbonyl, C.sub.1-C.sub.6-alkyliminocarbonyl,
C.sub.6-aryliminocarbonyl,
c.sub.5-C.sub.6-heterocycloiminocarbonyl,
C.sub.6-arylthio-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl,
C.sub.6-arylthio-C.sub.3-C.sub.6-alkenyl,
C.sub.1-C.sub.4-alkylthio-C.sub.3-C.sub.6-alkenyl,
C.sub.5-C.sub.6-heteroaryl-C.sub.1-C.sub.6-alkyl,
halo-C.sub.1-C.sub.6-alkanoyl, hydroxy-C.sub.1-C.sub.6-alkanoyl,
thiol-C.sub.1-C.sub.6-alkanoyl, C.sub.3-C.sub.6-alkenyl,
C.sub.3-C.sub.6-alkynyl,
C.sub.1-C.sub.4-alkoxy-C.sub.1-C.sub.4-alkyl,
C.sub.1-C.sub.5-alkoxycarbonyl, aryloxycarbonyl,
NR.sup.8R.sup.9--C.sub.1-C.sub.5-alkylcarbonyl,
hydroxy-C.sub.1-C.sub.5-alkyl, an aminocarbonyl wherein the
aminocarbonyl nitrogen is (i) unsubstituted or (ii) substituted
with one or two radicals independently selected from the group
consisting of C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl and a C.sub.1-C.sub.6-alkanoyl group,
hydroxyaminocarbonyl, an aminosulfonyl group wherein the
aminosulfonyl nitrogen is (i) unsubstituted or (ii) substituted
with one or two radicals independently selected from the group
consisting of C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl and a C.sub.1-C.sub.6-alkanoyl group, an
amino-C.sub.1-C.sub.6-alkylsulfonyl group wherein the
amino-C.sub.1-C.sub.6-alkylsulfonyl nitrogen is (i) unsubstituted
or (ii) substituted with one or two radicals independently selected
from the group consisting of C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.8-cycloalkyl and a
C.sub.1-C.sub.6-alkanoyl group and an amino-C.sub.1-C.sub.6-alkyl
group wherein the aminoalkyl nitrogen is (i) unsubstituted or (ii)
substituted with one or two radicals independently selected from
the group consisting of C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.8-cycloalkyl and a
C.sub.1-C.sub.6-alkanoyl group; [0202] R.sup.7 is selected from the
group consisting of a benzyl, phenyl, C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-alkynyl, C.sub.3-C.sub.6-alkenyl and a
C.sub.1-C.sub.6-hydroxyalkyl group; [0203] R.sup.8 and R.sup.9 and
R.sup.10 and R.sup.11 are independently selected from the group
consisting of a hydrido, hydroxy, C.sub.1-C.sub.6-alkyl, aryl,
ar-C.sub.1-C.sub.6-alkyl, heteroaryl,
heteroar-C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl, thiol-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
aralkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylar-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide or sulfone of
any said thio substituents, perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl and an
amino-C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two radicals
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl, cycloalkyl and
C.sub.1-C.sub.6-alkanoyl, or wherein R.sup.8 and R.sup.9 or
R.sup.10 and R.sup.11 and the carbon to which they are bonded form
a carbonyl group, or wherein R.sup.8 and R.sup.9 or R.sup.10 and
R.sup.11, or R.sup.8 and R.sup.10 together with the atoms to which
they are bonded form a 5- to 8-membered carbocyclic ring, or a 5-
to 8-membered heterocyclic ring containing one or two heteroatoms
that are nitrogen, oxygen, or sulfur, with the proviso that only
one of R.sup.8 and R.sup.9 or R.sup.10 and R.sup.11 is hydroxy;
[0204] R.sup.12 and R.sup.12' are independently selected from the
group consisting of a hydrido, C.sub.1-C.sub.6-alkyl, aryl,
ar-C.sub.1-C.sub.6-alkyl, heteroaryl, heteroaralkyl,
C.sub.2-C.sub.6-alkynyl, C.sub.2-C.sub.6-alkenyl,
thiol-C.sub.1-C.sub.6-alkyl, cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-.sub.1C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
aryloxy-C.sub.1-C.sub.6, alkyl, amino-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylar-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide or sulfone of
any said thio substituents, perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl and an
amino-C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two radicals
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl, cycloalkyl and
C.sub.1-C.sub.6-alkanoyl; and [0205] R.sup.13 is selected from the
group consisting of a hydrido, benzyl, phenyl,
C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl and a C.sub.1-C.sub.6-hydroxyalkyl group.
Again, the use of a compound of formula III as a pharmaceutically
acceptable salt is also contemplated.
[0206] Preferences related to a compound of formula III that also
apply to a compound of formula II include the following, which are
independently preferred: (a) the sum of m+n+p=1 or 2, and more
preferably 2; (b) Z is O, S or NR.sup.6; (c) R.sup.6 is selected
from the group consisting of C.sub.3-C.sub.6-cycloalkyl,
C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.6-alkenyl,
C.sub.3-C.sub.6-alkynyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
amino-C.sub.1-C.sub.6-alkyl, aminosulfonyl,
heteroaryl-C.sub.1-C.sub.6-alkyl, aryloxycarbonyl, and
C.sub.1-C.sub.6-alkoxycarbonyl; and (d) m=n=zero, p=1, and Y is
NR.sup.6. Another preference for a compound of both of formulas II
and III is that R.sup.14 be hydrido, or that W of the C(W)R.sup.15
pro-drug form be 0 and R.sup.15 be a C.sub.1-C.sub.6-alkyl, aryl,
C.sub.1-C.sub.6-alkoxy, heteroaryl-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl, or aryloxy
group.
[0207] A still more preferred compound for use in a contemplated
process corresponds in structure to formula IV, below:
##STR16##
[0208] Here, R.sup.3 is as defined above as to formulas I, III and
more preferably as defined as to formula II (wherein the R.sup.3
radical is the substituent G-A-R-E-Y). Most preferably, R.sup.3 is
as defined in formula III.
[0209] Z is selected group the group consisting of O, S, NR.sup.6,
SO, SO.sub.2, and NSO.sub.2R.sup.7, [0210] wherein R.sup.6 is
selected from the group consisting of hydrido,
C.sub.1-C.sub.5-alkyl, C.sub.1-C.sub.5-alkanoyl, benzyl, benzoyl,
C.sub.3-C.sub.5-alkynyl, C.sub.3-C.sub.5-alkenyl,
C.sub.1-C.sub.3-alkoxy-C.sub.1-C.sub.4-alkyl,
C.sub.3-C.sub.6-cycloalkyl, heteroaryl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.5-hydroxyalkyl, C.sub.1-C.sub.5-carboxyalkyl,
C.sub.1-C.sub.5-alkoxy C.sub.1-C.sub.5-alkylcarbonyl, and
NR.sup.8R.sup.9--C.sub.1-C.sub.5-alkylcarbonyl or
NR.sup.8R.sup.9--C.sub.1-C.sub.5-alkyl wherein R.sup.8 and R.sup.9
are independently hydrido, C.sub.1-C.sub.5-alkyl,
C.sub.1-C.sub.5-alkoxycarbonyl or
aryl-C.sub.1-C.sub.5-alkoxycarbonyl, or NR.sup.8R.sup.9 together
form a heterocyclic ring containing 5- to 8-atoms in the ring; and
[0211] R.sup.7 is selected from the group consisting of an
arylalkyl, aryl, heteroaryl, heterocyclo, C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-alkynyl, C.sub.3-C.sub.6-alkenyl,
C.sub.1-C.sub.6-carboxyalkyl and a C.sub.1-C.sub.6-hydroxyalkyl
group. Most preferably, Z is O or NR.sup.6. Here too, the use of a
compound of formula IV as a pharmaceutically acceptable salt is
contemplated.
[0212] A still more preferred group of contemplated compounds for
use in a contemplated process correspond in structure to formula V,
below; ##STR17## [0213] wherein [0214] Z is as previously defined
for formula IV; [0215] W and Q are independently oxygen (O),
NR.sup.6 or sulfur (S), and R.sup.6 is as defined in formula IV;
and [0216] q is zero or one such that when q is zero, Q is absent
and the trifluoromethyl group is bonded directly to the depicted
phenyl ring. Here again, the use of a compound of formula IV as a
pharmaceutically acceptable salt is contemplated.
[0217] Particularly preferred compounds within the group defined by
formula V have the structural formulas shown below: ##STR18##
##STR19##
[0218] Also particularly preferred are the following compounds:
##STR20##
[0219] Several particularly preferred compounds whose structures
correspond to formulas I through V are illustrated in the Tables
and examples provided hereinafter.
[0220] As was noted before, the compounds of formulas II, III, IV
and V, and their pharmaceutically acceptable salts are themselves
contemplated compounds of the invention.
[0221] In preferred practice, an SO.sub.2-linked R.sup.3 radical is
an aryl or heteroaryl group that is a 5- or 6-membered single-ring
that is itself substituted with one other single-ringed aryl or
heteroaryl group or, with an alkyl or alkoxy group having a chain
length of 3 to about 16 carbon atoms (and more preferably a length
of up to about 14 carbon atoms), a phenoxy group, a thiophenoxy
[C.sub.6H.sub.5--S--] group, a phenylazo
[C.sub.6H.sub.5--N.sub.2--] group, a N-piperidyl
[C.sub.5H.sub.10N-] group, a N-piperazyl [NC.sub.4HgN--) group or a
benzamido [--NHC(O)C.sub.6H.sub.5] group. The SO.sub.2-linked
single-ringed aryl or heteroaryl R.sup.3 group here is substituted
at its own 4-position when a 6-membered ring and at its own 3- or
4-position when a 5-membered ring.
[0222] The SO.sub.2-linked aryl or heteroaryl group of a R.sup.3
radical is preferably itself substituted at the 4-position when a
6-membered ring or the 3- or 4-position when a 5-membered ring. A
particularly preferred substituent is a single-ringed aryl or
heteroaryl, phenoxy, thiophenoxy, phenylazo, N-piperidyl,
N-piperazyl or benzamido group that is unsubstituted or can itself
be substituted.
[0223] The 4- and 3-positions of rings discussed here are numbered
from the sites of substituent bonding as compared to formalized
ring numbering positions used in heteroaryl nomenclature, as is
discussed further hereinbelow. Here, single atoms such as halogen
moieties (fluoro, chloro, bromo, or iodo) or substituents that
contain one to a chain length of about five atoms other than
hydrogen such as phenyl, C.sub.1-C.sub.4 alkyl, trifluoromethyl,
trifluoromethoxy, trifluorothiomethyl or carboxyethyl groups are
preferred, although longer substituents can be accommodated up to a
total length of an icosyl group.
[0224] Exemplary particularly preferred substituted SO.sub.2-linked
R.sup.3 radicals include 4-(phenyl)phenyl [biphenyl],
4-(4'-methoxyphenyl)-phenyl, 4-(phenoxy)phenyl,
4-(thiophenyl)phenyl [4-(phenylthio)phenyl], 4-(azophenyl)phenyl,
4-[(4'-trifluoromethylthio)phenoxy]phenyl,
4-[(4'-trifluoromethylthio)thiophenyl]phenyl,
4-[(4'-trifluoromethyl)phenoxy]phenyl,
4-[(4'-trifluoromethyl)thiophenyl]phenyl,
4-[(4'-trifluoromethoxy)phenoxy]phenyl,
4-[(4'-trifluoromethoxy)thiophenyl]phenyl,
4-[(4'-phenyl)N-piperidyl]phenyl, 4-[(4'-acetyl)N-piperazyl]phenyl
and 4-(benzamido)phenyl.
[0225] Inasmuch as a contemplated SO.sub.2-linked aryl or
heteroaryl radical of an R.sup.3 group is itself preferably
substituted with a 6-membered ring, two nomenclature systems are
used together herein for ease in understanding substituent
positions. The first system uses position numbers for the ring
directly bonded to the SO.sub.2-group, whereas the second system
uses ortho, meta or para for the position of one or more
substituents of a 6-membered ring bonded to a SO.sub.2-linked aryl
or heteroaryl radical. Although ortho, meta and para positional
nomenclature is normally not used with aliphatic ring systems, it
is believed more readily understood for describing the present
compounds when used in conjunction with the numerical system for
the first ring bonded to the SO.sub.2-group. When a R.sup.3 radical
is other than a 6-membered ring, substituent positions are numbered
from the position of linkage to the aromatic or heteroaromatic
ring. Formal chemical nomenclature is used in naming particular
compounds.
[0226] Thus, the 1-position of an above-discussed SO.sub.2-linked
aryl or heteroaryl group is the position at which the
SO.sub.2-group is bonded to the ring. The 4- and 3-positions of
rings discussed here are numbered from the sites of substituent
bonding from the SO.sub.2-linkage as compared to formalized ring
numbering positions used in heteroaryl nomenclature.
[0227] When examined along its longest chain of atoms, an R.sup.3
radical including its own substituent has a total length that is
greater than a saturated chain of five carbon atoms (a pentyl
group), and preferably has a length greater than that of a
saturated chain of six carbon atoms (a hexyl group); i.e., a length
of about a heptyl chain or longer. An R.sup.3 radical also has a
length that is less than that of a saturated chain of about 20
carbon atoms [an icosyl group (icosyl was formerly spelled
eicosyl)] and more preferably about 18 carbon atoms (a stearyl
group). Most preferably, the length of R.sup.3 is about that of an
8 to about 12 carbon atom chain, even though many more atoms may be
present in ring structures or substituents. This length requirement
is discussed further below.
[0228] Looked at more generally, and aside from specific moieties
from which it is constructed, an R.sup.3 radical (group or moiety)
has a length that is greater than that of a pentyl group. Such an
R.sup.3 radical also has a length that is less than that of an
icosyl (didecyl) group. That is to say that R.sup.3 is a radical
having a minimal length longer that a saturated five carbon chain,
and preferably greater than a hexyl group, but is shorter than the
length of a saturated twenty carbon atom chain, and preferably
shorter than an eighteen carbon chain. Most preferably, R.sup.3 has
a length greater than that of an octyl group and less than that of
a lauryl group.
[0229] More specifically, an R.sup.3 group has a minimal length of
a hexyl group only when that substituent is comprised of two rings
that can be fused or simply covalently linked together by exocyclic
bonding. When R.sup.3 does not contain two linked or fused rings,
e.g., where a R.sup.3 radical includes an alkyl or second, third or
fourth ring substituent, R.sup.3 has a length that is greater than
that of a hexyl group. Exemplary of such two ring R.sup.3 groups
are a 2-naphthyl group or a 2-quinolinyl group (each with a six
carbon chain length) and 8-purinyl (with a five carbon atom chain
length). Without wishing to be bound by theory, it is believed that
the presence of multiple rings in R.sup.3 enhances selectivity of
the enzyme activity inhibitor profile.
[0230] The radical chain lengths are measured along the longest
linear atom chain in the radical, following the skeletal atoms
around a ring where necessary. Each atom in the chain, e.g. carbon,
oxygen, sulfur or nitrogen, is presumed to be carbon for ease in
calculation.
[0231] Such lengths can be readily determined by using published
bond angles, bond lengths and atomic radii, as needed, to draw and
measure a desired, usually staggered, chain, or by building models
using commercially available kits whose bond angles, lengths and
atomic radii are in accord with accepted, published values. Radical
(substituent) lengths can also be determined somewhat less exactly
by assuming that all atoms have bond lengths saturated carbon, that
unsaturated bonds have the same lengths as saturated bonds and that
bond angles for unsaturated bonds are the same as those for
saturated bonds, although the above-mentioned modes of measurement
are preferred. For example, a phenyl or pyridyl group has a length
of a four carbon chain, as does a propoxy group, whereas a biphenyl
group has a length of about an eight carbon chain using such a
measurement mode.
[0232] In addition, a R.sup.3 group when rotated about an axis
drawn through the SO.sub.2-bonded 1-position and the 4-position of
a 6-membered ring or the SO.sub.2-bonded position and
substituent-bonded 3- or 4-position of a 5-membered ring defines a
three-dimensional volume whose widest dimension has the width of
about one furanyl ring to about two phenyl rings in a direction
transverse to that axis to rotation.
[0233] Thus, a 2-naphthyl substituent or an 8-purinyl substituent
is an appropriately sized R.sup.3 group when examined using the
above rotational width criterion as well as the before-discussed
criterion. On the other hand, a 1-naphthyl group or a 7- or
9-purinyl group is too wide upon rotation and is excluded from
being an R.sup.3 group.
[0234] As a consequence of these length and width requirements,
R.sup.3 radicals such as 4-(phenyl)phenyl [biphenyl],
4-(4'-methoxyphenyl)-phenyl, 4-(phenoxy)phenyl,
4-(thiophenyl)phenyl [4-(phenylthio)phenyl], 4-(azophenyl)phenyl,
4-[(4'-trifluoromethylthio)phenoxy]phenyl,
4-[(4'-trifluoromethylthio)thiophenyl]phenyl,
4-[(4'-trifluoromethyl)phenoxy]phenyl,
4-[(4'-trifluoromethyl)thiophenyl]phenyl,
4-[(4'-trifluoromethoxy)phenoxy]phenyl,
4-[(4'-trifluoromethoxy)thiophenyl]phenyl,
4-[(4'-phenyl)N-piperidyl]phenyl, 4-[(4'-acetyl)N-piperazyl]phenyl
and 4-(benzamido)phenyl are particularly preferred R.sup.3
radicals. Those substituents can themselves also be substituted in
the second ring from the SO.sub.2 group at the meta- or
para-position or both with a single atom or a substituent
containing a longest chain length that is preferably of up to five
atoms, excluding hydrogen.
[0235] Without wishing to be bound by theory, the length of a
R.sup.3 radical substituent bonded to the SO.sub.2 group is
believed to play a role in the overall activity of a contemplated
inhibitor compound against MMP enzymes generally. The length of the
R.sup.3 radical group also appears to play a role in the selective
activity of an inhibitor compound against particular MMP
enzymes.
[0236] In particularly preferred practice, R.sup.3 is a PhR.sup.23
group, wherein Ph is phenyl. The phenyl ring (Ph) of a PhR.sup.23
group is substituted at its para-position (4-position) by an
R.sup.23 group that can be another single-ringed aryl or heteroaryl
group, a piperidyl group, a piperazinyl group, a phenoxy group, a
thiophenoxy [C.sub.6H.sub.5--S--] group, a phenylazo
[C.sub.6H.sub.5--N.sub.2--] group or a benzamido
[--NHC(O)C.sub.6H.sub.5] group.
[0237] In one embodiment of a particularly preferred aromatic
sulfone hydroxamate inhibitor compound, an R.sup.23 substituent is
phenoxy and is itself substituted at its own para-position with a
moiety that is selected from the group consisting of a halogen, a
C.sub.1-C.sub.4 alkoxy group, a C.sub.1-C.sub.4 alkyl group, a
dimethylamino group, a carboxyl C.sub.1-C.sub.3 alkylene group, a
C.sub.1-C.sub.4 alkoxy carbonyl C.sub.1-C.sub.3 alkylene group, a
trifluoromethylthio group, a trifluoromethoxy group, a
trifluoromethyl group and a carboxamido C.sub.1-C.sub.3 alkylene
group, or is substituted at the meta- and para-positions by a
methylenedioxy group. It is to be understood that any R.sup.23
substituent can be substituted with a moiety from the above list.
Such substitution at the para-position is preferred.
[0238] The present invention also contemplates an intermediate
compound that is useful in preparing a compound of formulas I-V.
Such an intermediate compound corresponds in structure to formula
VI, below: ##STR21## [0239] wherein g is zero, 1 or 2; [0240]
R.sup.20 is (a) --O--R.sup.21, where R.sup.21 is selected from the
group consisting of a hydrido, C.sub.1-C.sub.6-alkyl, aryl,
ar-C.sub.1-C.sub.6-alkyl group and a pharmaceutically acceptable
cation, or (b) --NH--O--R.sup.22 wherein R.sup.22 is a selectively
removable protecting group such as a 2-tetrahydropyranyl,
C.sub.1-C.sub.6-acyl, aroyl, benzyl, p-methoxybenzyl (MOZ)
carbonyl-C.sub.1-C.sub.6-alkoxy, trisubstituted silyl group or
o-nitrophenyl group, peptide systhesis resin and the like, wherein
trisubstituted silyl group is substituted with
C.sub.1-C.sub.6-alkyl, aryl, or ar-C.sub.1-C.sub.6-alkyl; [0241] m
is zero, 1 or 2; [0242] n is zero, 1 or 2; [0243] p is zero, 1 or
2; [0244] the sum of m+n+p=1, 2, 3 or 4; [0245] (a) one of X, Y and
Z is selected from the group consisting of C(O), NR.sup.6, O, S,
S(O), S(O).sub.2 and NS(O).sub.2R.sup.7, and the remaining two of
X, Y and Z are CR.sup.8R.sup.9, and CR.sup.10R.sup.11, or [0246]
(b) X and Z or Z and Y together constitute a moiety that is
selected from the group consisting of NR.sup.6C(O), NR.sup.6S(O),
NR.sup.6S(O).sub.2, NR.sup.6S, NR.sup.6O, SS, NR.sup.6NR.sup.6 and
OC(O), with the remaining one of X, Y and Z being CR.sup.8R.sup.9,
or [0247] (c) n is zero and X, Y and Z together constitute a moiety
selected from the group consisting of ##STR22## [0248] wherein wavy
lines are bonds to the atoms of the depicted ring; [0249] R.sup.6
and R.sup.6' are independently selected from the group consisting
of hydrido, C.sub.1-C.sub.6-alkanoyl,
C.sub.6-aryl-C.sub.1-C.sub.6-alkyl, aroyl,
bis(C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl)-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkyl, C.sub.1-C.sub.6-haloalkyl,
C.sub.1-C.sub.6-perfluoroalkyl,
C.sub.1-C.sub.6-trifluoromethylalkyl,
C.sub.1-C.sub.6-perfluoroalkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-cycloalkyl, C.sub.3-C.sub.8-heterocycloalkyl,
C.sub.3-C.sub.8-heterocycloalkylcarbonyl, C.sub.6-aryl,
C.sub.5-C.sub.6-heterocyclo, C.sub.5-C.sub.6-heteroaryl,
C.sub.3-C.sub.8-cycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.6-aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryl-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, C.sub.6-arylsulfonyl,
C.sub.1-C.sub.6-alkylsulfonyl, C.sub.5-C.sub.6-heteroarylsulfonyl,
carboxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.4-alkoxycarbonyl-C.sub.1-C.sub.6-alkyl,
aminocarbonyl, C.sub.1-C.sub.6-alkyliminocarbonyl,
C.sub.6-aryliminocarbonyl,
C.sub.5-C.sub.6-heterocycloiminocarbonyl,
C.sub.6-arylthio-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl,
C.sub.6-arylthio-C.sub.3-C.sub.6-alkenyl,
C.sub.1-C.sub.4-alkylthio-C.sub.3-C.sub.6-alkenyl,
C.sub.5-C.sub.6-heteroaryl-C.sub.1-C.sub.6-alkyl,
halo-C.sub.1-C.sub.6-alkanoyl, hydroxy-C.sub.1-C.sub.6-alkanoyl,
thiol-C.sub.1-C.sub.6-alkanoyl, C.sub.3-C.sub.6-alkenyl,
C.sub.3-C.sub.6-alkynyl,
C.sub.1-C.sub.4-alkoxy-C.sub.1-C.sub.4-alkyl,
C.sub.1-C.sub.5-alkoxycarbonyl, aryloxycarbonyl,
NR.sup.8R.sup.9--C.sub.1-C.sub.5-alkylcarbonyl,
hydroxy-C.sub.1-C.sub.5-alkyl, an aminocarbonyl wherein the
aminocarbonyl nitrogen is (i) unsubstituted or (ii) substituted
with one or two radicals independently selected from the group
consisting of C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl and a C.sub.1-C.sub.6-alkanoyl group,
hydroxyaminocarbonyl, an aminosulfonyl group wherein the
aminosulfonyl nitrogen is (i) unsubstituted or (ii) substituted
with one or two radicals independently selected from the group
consisting of C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.8-cycloalkyl and a C.sub.1-C.sub.6-alkanoyl group, an
amino-C.sub.1-C.sub.6-alkylsulfonyl group wherein the
amino-C.sub.1-C.sub.6-alkylsulfonyl nitrogen is (i) unsubstituted
or (ii) substituted with one or two radicals independently selected
from the group consisting of C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.8-cycloalkyl and a
C.sub.1-C.sub.6-alkanoyl group and an amino-C.sub.1-C.sub.6-alkyl
group wherein the aminoalkyl nitrogen is (i) unsubstituted or (ii)
substituted with one or two radicals independently selected from
the group consisting of C.sub.1-C.sub.6-alkyl,
ar-C.sub.1-C.sub.6-alkyl, C.sub.3-C.sub.8-cycloalkyl and a
C.sub.1-C.sub.6-alkanoyl group; [0250] R.sup.7 is selected from the
group consisting of a benzyl, phenyl, C.sub.1-C.sub.6-alkyl,
C.sub.3-C.sub.6-alkynyl, c.sub.3-C.sub.6-alkenyl and a
C.sub.1-C.sub.6-hydroxyalkyl group; [0251] R.sup.8 and R.sup.9 and
R.sup.10 and R.sup.11 are independently selected from the group
consisting of a hydrido, hydroxy, C.sub.1-C.sub.6-alkyl, aryl,
ar-C.sub.1-C.sub.6-alkyl, heteroaryl,
heteroar-C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl, thiol-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
aralkoxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylar-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide or sulfone of
any said thio substituents, perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl and an
amino-C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two radicals
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl, cycloalkyl and
C.sub.1-C.sub.6-alkanoyl, or wherein R.sup.8 and R.sup.9 or
R.sup.10 and R.sup.11 and the carbon to which they are bonded form
a carbonyl group, or wherein R.sup.8 and R.sup.9 or R.sup.10 and
R.sup.11, or R.sup.8 and R.sup.10 together with the atoms to which
they are bonded form a 5- to 8-membered carbocyclic ring, or a 5-
to 8-membered heterocyclic ring containing one or two heteroatoms
that are nitrogen, oxygen, or sulfur, with the proviso that only
one of R.sup.8 and R.sup.9 or R.sup.10 and R.sup.11 is hydroxy;
[0252] R.sup.12 and R.sup.12' are independently selected from the
group consisting of a hydrido, C.sub.1-C.sub.6-alkyl, aryl,
ar-C.sub.1-C.sub.6-alkyl, heteroaryl, heteroaralkyl,
C.sub.2-C.sub.6-alkynyl, C.sub.2-C.sub.6-alkenyl,
thiol-C.sub.1-C.sub.6-alkyl, cycloalkyl,
cycloalkyl-C.sub.1-C.sub.6-alkyl,
heterocycloalkyl-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
aryloxy-C.sub.1-C.sub.6-alkyl, amino-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkoxy-C.sub.1-C.sub.6-alkyl,
hydroxy-C.sub.1-C.sub.6-alkyl,
hydroxycarbonyl-C.sub.1-C.sub.6-alkyl,
hydroxycarbonylar-C.sub.1-C.sub.6-alkyl,
aminocarbonyl-C.sub.1-C.sub.6-alkyl, aryloxy-C.sub.1-C.sub.6-alkyl,
heteroaryloxy-C.sub.1-C.sub.6-alkyl,
C.sub.1-C.sub.6-alkylthio-C.sub.1-C.sub.6-alkyl,
arylthio-C.sub.1-C.sub.6-alkyl,
heteroarylthio-C.sub.1-C.sub.6-alkyl, the sulfoxide or sulfone of
any said thio substituents, perfluoro-C.sub.1-C.sub.6-alkyl,
trifluoromethyl-C.sub.1-C.sub.6-alkyl, halo-C.sub.1-C.sub.6-alkyl,
alkoxycarbonylamino-C.sub.1-C.sub.6-alkyl and an
amino-C.sub.1-C.sub.6-alkyl group wherein the aminoalkyl nitrogen
is (i) unsubstituted or (ii) substituted with one or two radicals
independently selected from the group consisting of
C.sub.1-C.sub.6-alkyl, ar-C.sub.1-C.sub.6-alkyl, cycloalkyl and
C.sub.1-C.sub.6-alkanoyl; [0253] R.sup.13 is selected from the
group consisting of a hydrido, benzyl, phenyl,
C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkynyl,
C.sub.2-C.sub.6-alkenyl and a C.sub.1-C.sub.6-hydroxyalkyl group;
and [0254] R.sup.24 is R.sup.3 as defined in formulas I, III, IV or
is the substituent G-A-R-E-Y of formula II (formula VIA).
Alternatively, R.sup.24 is R.sup.3, an aryl or heteroaryl group
that is substituted with a coupling substituent reactive for
coupling with another moiety (formula VIB), such as a
nucleophilically displaceable leaving group, D. ##STR23##
[0255] Exemplary nucleophilically displaceable leaving groups, D,
include a halo (fluoro, chloro, bromo, or idodo) nitro, azido,
phenylsulfoxido, aryloxy, C.sub.1-C.sub.6-alkoxy, a
C.sub.1-C.sub.6-alkylsulfonate or arylsulfonate group and a
trisubstituted ammonium group in which the three substituents are
independently aryl, ar-C.sub.1-C.sub.6-alkyl or
C.sub.1-C.sub.6-alkyl. Additional coupling substituents include,
without limitation, a hydroxyl group and an amino group that can be
coupled with carbonyl-containing moieties to form esters,
urethanes, carbonates, amides and ureas. Similarly, a carboxyl
coupling substituent can be used to form an ester, thioester or
amide. Thus, a coupling substituent is useful in converting a
coupling substituent-containing aryl or heteroaryl group into a
substituent such as a G-A-R-E-Y substituent discussed hereinabove
by the formation of a covalent bond.
[0256] A compound of formula VI can be coupled with another moiety
at the R.sup.3' coupling substituent to form a compound whose newly
formed R.sup.3 group is that of formulas I, III, IV or -G-A-R-E-Y.
Exemplary of such couplings are the nucleophilic displacement to
form ethers and thioethers, as well as the formation of ester,
amide, urea, carbonate, urethane and the like linkages.
[0257] A particularly preferred precursor intermediate to an
intermediate compound of formula VI is an intermediate compound of
formula VII, below ##STR24## [0258] wherein m, n, p, g, X, Z, Y, D
and R.sup.20 are as defined above for formula VI.
[0259] R.sup.20 is preferably --NH--O--R.sup.22, wherein R.sup.22
is a selectively removable protecting group such as a
2-tetrahydropyranyl, C.sub.1-C.sub.6-acyl, aroyl, benzyl,
p-methoxybenzyl (MOZ) carbonyl-C.sub.1-C.sub.6-alkoxy,
o-nitrophenyl group, a peptide syntheisi resin such as a so-called
Merrifield's Peptide Resin commercially available from Sigma
Chemical Co., and the like, with 2-tetrahydropyranyl being
particularly preferred. An --NH--O--R.sup.22 group (R.sup.20) in
formulas VI and VII is therefore seen to be a reaction product of a
hydroxyl amine whose oxygen is bonded to a selectively removable
protecting group and a carboxyl group.
[0260] In regard to a compound of each of formulas VI and VII, the
subscript letter "g" is used to show the oxidation state of the
sulfur atom. Where g is zero, the sulfur is unoxidized, and the
compound depicted is typically the sulfide reaction product of a
sulfur-containing synthon as is illustrated in the examples
hereinafter. Where g is 1, the sulfur is oxidized to a sulfoxide,
whereas when g is 2, the sulfur is oxidized to a sulfone as is also
illustrated hereinafter. A compound of formulas VI or VII wherein g
is zero or 1 are themselves typically intermediates in the
formation of a similar compound wherein g is 2 and the intermediate
is a preferred sulfone.
[0261] A preferred intermediate therefore corresponds in structure
to formula VIIA, below ##STR25##
[0262] In the written descriptions of molecules and groups,
molecular descriptors can be combined to produce words or phrases
that describe structural groups or are combined to describe
structural groups. Such descriptors are used in this document.
Common illustrative examples include such terms as aralkyl (or
arylalkyl), heteroaralkyl, heterocycloalkyl, cycloalkylalkyl,
aralkoxyalkoxycarbonyl and the like. A specific example of a
compound encompassed with the latter descriptor
aralkoxyalkoxycarbonyl is
C.sub.6H.sub.5--CH.sub.2--CH.sub.2--O--CH.sub.2--O--(C.dbd.O)--
wherein C.sub.6H.sub.5-- is phenyl. It is also to be noted that a
structural group can have more than one descriptive word or phrase
in the art, for example, heteroaryloxyalkylcarbonyl can also be
termed heteroaryloxyalkanoyl. Such combinations are used herein in
the description of the processes, compounds and compositions of
this invention and further examples are described below. The
following list is not intended to be exhaustive or drawn out but
provide illustrative examples of words or phrases (terms) that are
used herein.
[0263] As utilized herein, the term "alkyl", alone or in
combination, means a straight-chain or branched-chain alkyl radical
containing 1 to about 12 carbon atoms, preferably 1 to about 10
carbon atoms, and more preferably 1 to about 6 carbon atoms.
Examples of such radicals include methyl, ethyl, n-propyl,
isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, pentyl,
iso-amyl, hexyl, octyl and the like.
[0264] The term "alkenyl", alone or in combination, means a
straight-chain or branched-chain hydrocarbon radical having one or
more double bonds and containing 2 to about 12 carbon atoms
preferably 2 to about 10 carbon atoms, and more preferably, 2 to
about 6 carbon atoms. Examples of suitable alkenyl radicals include
ethenyl (vinyl), 2-propenyl, 3-propenyl, 1,4-pentadienyl,
1,4-butadienyl, 1-butenyl, 2-butenyl, 3-butenyl, decenyl and the
like.
[0265] The term "alkynyl", alone or in combination, means a
straight-chain hydrocarbon radical having one or more triple bonds
and containing 2 to about 12 carbon atoms, preferably 2 to about 10
carbon atoms, and more preferably, 2 to about 6 carbon atoms.
Examples of alkynyl radicals include ethynyl, 2-propynyl,
3-propynyl, decynyl, 1-butynyl, 2-butynyl, 3-butynyl, and the
like.
[0266] The term "carbonyl" or "oxo", alone or in combination, means
a --C(.dbd.O)-- group wherein the remaining two bonds (valences)
can be independently substituted. The term carbonyl is also
intended to encompass a hydrated carbonyl group
--C(OH).sub.2--.
[0267] The term "thiol" or "sulfhydryl", alone or in combination,
means a --SH group. The term "thio" or "thia", alone or in
combination, means a thiaether group; i.e., an ether group wherein
the ether oxygen is replaced by a sulfur atom.
[0268] The term "amino", alone or in combination, means an amine or
--NH.sub.2 group whereas the term mono-substituted amino, alone or
in combination, means a substituted amine --N(H)(substituent) group
wherein one hydrogen atom is replaced with a substituent, and
disubstituted amine means a --N(substituent).sub.2 wherein two
hydrogen atoms of the amino group are replaced with independently
selected substituent groups.
[0269] Amines, amino groups and amides are compounds that can be
designated as primary (I.degree.), secondary (II.degree.) or
tertiary (III.degree.) or unsubstituted, mono-substituted or
N,N-disubstituted depending on the degree of substitution of the
amino nitrogen. Quaternary amine (ammonium)(IV.degree.) means a
nitrogen with four substituents [--N.sup.+(substituent).sub.4] that
is positively charged and accompanied by a counter ion, whereas
N-oxide means one substituent is oxygen and the group is
represented as [--N.sup.+(substituent).sub.3--O.sup.-]; i.e., the
charges are internally compensated.
[0270] The term "cyano", alone or in combination, means a
--C-triple bond-N (--C.ident.N) group. The term "azido", alone or
in combination, means a --N-triple bond-N (--N.ident.N) group. The
term "hydroxyl", alone or in combination, means a --OH group. The
term "nitro", alone or in combination, means a --NO.sub.2 group.
The term "azo", alone or in combination, means a --N.ident.N-group
wherein the bonds at the terminal positions can be independently
substituted.
[0271] The term "hydrazino", alone or in combination, means a
--NH--NH-- group wherein the depicted remaining two bonds
(valences) can be independently substituted. The hydrogen atoms of
the hydrazino group can be replaced, independently, with
substituents and the nitrogen atoms can form acid addition salts or
be quaternized.
[0272] The term "sulfonyl", alone or in combination, means a
--SO.sub.2-- group wherein the depicted remaining two bonds
(valences) can be independently substituted. The term "sulfoxido",
alone or in combination, means a --SO-- group wherein the remaining
two bonds (valences) can be independently substituted.
[0273] The term "sulfone", alone or in combination, means a
--SO.sub.2-- group wherein the depicted remaining two bonds
(valences) can be independently substituted. The term
"sulfenamide", alone or in combination, means a --SON=group wherein
the remaining three depicted bonds (valences) can be independently
substituted. The term "sulfide", alone or in combination, means a
--S-- group wherein the remaining two bonds (valences) can be
independently substituted.
[0274] The term "alkoxy", alone or in combination, means an alkyl
ether radical wherein the term alkyl is as defined above. Examples
of suitable alkyl ether radicals include methoxy, ethoxy,
n-propoxy, isopropoxy, n-butoxy, iso-butoxy, sec-butoxy,
tert-butoxy and the like.
[0275] The term "cycloalkyl", alone or in combination, means a
cyclic alkyl radical that contains 3 to about 8 carbon atoms. The
term "cycloalkylalkyl" means an alkyl radical as defined above that
is substituted by a cycloalkyl radical containing 3 to about 8,
preferably 3 to about 6, carbon atoms. Examples of such cycloalkyl
radicals include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl
and the like.
[0276] A heterocyclic (heterocyclo) or heterocyclo portion of a
heterocyclocarbonyl, heterocyclooxy-carbonyl,
heterocycloalkoxycarbonyl, or heterocycloalkyl group or the like is
a saturated or partially unsaturated monocyclic, bicyclic or
tricyclic heterocycle that contains one or more hetero atoms
selected from nitrogen, oxygen and sulphur. Such a moiety can be
optionally substituted on one or more ring carbon atoms by halogen,
alkyl, alkoxy, oxo, and the like, and/or on a secondary nitrogen
atom (i.e., --NH--) of the ring by alkyl, aralkoxycarbonyl,
alkanoyl, aryl or arylalkyl or on a tertiary nitrogen atom (i.e.,
.dbd.N--) by oxido and that is attached via a carbon atom. The
tertiary nitrogen atom with three substituents can also attached to
form a N-oxide (.dbd.N(O)--] group.
[0277] The term "aryl", alone or in combination, means a 5- or
6-membered carbocyclic aromatic ring-containing moiety or a fused
ring system containing two or three rings that have all carbon
atoms in the ring; i.e., a carbocyclic aryl radical. Exemplary
carbocyclic aryl radicals include phenyl, indenyl and naphthyl
radicals.
[0278] The term "heteroaryl", alone or in combination means a 5- or
6-membered aromatic ring-containing moiety or a fused ring system
(radical) containing two or three rings that have carbon atoms and
also one or more heteroatoms in the ring(s) such as sulfur, oxygen
and nitrogen. Examples of such heterocyclic or heteroaryl groups
are pyrrolidinyl, piperidyl, piperazinyl, morpholinyl,
thiamorpholinyl, pyrrolyl, imidazolyl (e.g., imidazol-4-yl,
1-benzyloxycarbonylimidazol-4-yl, and the like), pyrazolyl,
pyridyl, pyrazinyl, pyrimidinyl, furyl, tetrahydrofuryl, thienyl,
triazolyl, oxazolyl, oxadiazoyl, thiazolyl, thiadiazoyl, indolyl
(e.g., 2-indolyl, and the like), quinolinyl, (e.g., 2-quinolinyl,
3-quinolinyl, 1-oxido-2-quinolinyl, and the like), isoquinolinyl
(e.g., 1-isoquinolinyl, 3-isoquinolinyl, and the like),
tetrahydroquinolinyl (e.g., 1,2,3,4-tetrahydro-2-quinolyl, and the
like), 1,2,3,4-tetrahydroisoquinolinyl (e.g.,
1,2,3,4-tetrahydro-1-oxo-isoquinolinyl, and the like),
quinoxalinyl, .beta.-carbolinyl, 2-benzofurancarbonyl,
benzothiophenyl, 1-, 2-, 4- or 5-benzimidazolyl, and the like
radicals.
[0279] When an aryl or heteroaryl radical is a substituting moiety
(group, substituent, or radical), it can itself substituted, the
last-named substituent is independently selected from the group
consisting of a cyano, perfluoroalkyl, trifluoro-methoxy,
trifluoromethylthio, haloalkyl, trifluoromethylalkyl,
aralkoxycarbonyl, aryloxycarbonyl, hydroxy, halo, alkyl, alkoxy,
nitro, thiol, hydroxycarbonyl, aryloxy, arylthio, aralkyl, aryl,
arylcarbonylamino, heteroaryloxy, heteroarylthio, heteroaralkyl,
cycloalkyl, heterocyclooxy, heterocyclothio, heterocycloamino,
cycloalkyloxy, cycloalkylthio, heteroaralkoxy, heteroaralkylthio,
aralkoxy, aralkylthio, aralkylamino, heterocyclo, heteroaryl,
arylazo, hydroxycarbonylalkoxy, alkoxycarbonylalkoxy, alkanoyl,
arylcarbonyl, aralkanoyl, alkanoyloxy, aralkanoyloxy, hydroxyalkyl,
hydroxyalkoxy, alkylthio, alkoxyalkylthio, alkoxycarbonyl,
aryloxyalkoxyaryl, arylthioalkylthioaryl, aryloxyalkylthioaryl,
arylthioalkoxyaryl, hydroxycarbonylalkoxy,
hydroxycarbonylalkylthio, alkoxycarbonylalkoxy,
alkoxycarbonylalkylthio, amino, [0280] wherein the amino nitrogen
is (i) unsubstituted, or (ii) substituted with one or two
substituents that are independently selected from the group
consisting of an alkyl, aryl, heteroaryl, aralkyl, cycloalkyl,
aralkoxycarbonyl, alkoxycarbonyl, arylcarbonyl, aralkanoyl,
heteroarylcarbonyl, heteroaralkanoyl and an alkanoyl group, or
(iii) wherein the amino nitrogen and two substituents attached
thereto form a 5- to 8-membered heterocyclo or heteroaryl ring
containing zero to two additional heteroatoms that are nitrogen,
oxygen or sulfur and which ring itself is (a) unsubstituted or (b)
substituted with one or two groups independently selected from the
group consisting of an aryl, alkyl, heteroaryl, aralkyl,
heteroaralkyl, hydroxy, alkoxy, alkanoyl, cycloalkyl,
heterocycloalkyl, alkoxycarbonyl, hydroxyalkyl, trifluoromethyl,
benzofused heterocycloalkyl, hydroxyalkoxyalkyl, aralkoxycarbonyl,
hydroxycarbonyl, aryloxycarbonyl, benzofused heterocycloalkoxy,
benzofused cycloalkylcarbonyl, heterocyclo-alkylcarbonyl, and a
cycloalkylcarbonyl group, carbonylamino [0281] wherein the
carbonylamino nitrogen is (i) unsubstituted, or (ii) is the reacted
amine of an amino acid, or (iii) substituted with one or two
radicals selected from the group consisting of an alkyl,
hydroxyalkyl, hydroxyheteroaralkyl, cycloalkyl, aralkyl,
trifluoromethylalkyl, heterocycloalkyl, benzofused
heterocycloalkyl, benzofused heterocycloalkyl, benzofused
cycloalkyl, and an N,N-dialkylsubstituted alkylamino-alkyl group,
or (iv) the carboxamido nitrogen and two substituents bonded
thereto together form a 5- to 8-membered heterocyclo, heteroaryl or
benzofused heterocycloalkyl ring that is itself unsubstituted or
substituted with one or two radicals independently selected from
the group consisting of an alkyl, alkoxycarbonyl, nitro,
heterocycloalkyl, hydroxy, hydroxycarbonyl, aryl, aralkyl,
heteroaralkyl and an amino group, [0282] wherein the amino nitrogen
is [0283] (i) unsubstituted, or (ii) substituted with one or two
substituents that are independently selected from the group
consisting of alkyl, aryl, and heteroaryl, or (iii) wherein the
amino nitrogen and two substituents attached thereto form a 5- to
8-membered heterocyclo or heteroaryl ring, and an aminoalkyl group
wherein the aminoalkyl nitrogen is (i) unsubstituted, or (ii)
substituted with one or two substituents independently selected
from the group consisting of an alkyl, aryl, aralkyl, cycloalkyl,
aralkoxycarbonyl, alkoxycarbonyl, and an alkanoyl group, or (iii)
wherein the aminoalkyl nitrogen and two substituents attached
thereto form a 5- to 8-membered heterocyclo or heteroaryl ring.
[0284] The term "aralkyl", alone or in combination, means an alkyl
radical as defined above in which one hydrogen atom is replaced by
an aryl radical as defined above, such as benzyl, 2-phenylethyl and
the like.
[0285] The term "aralkoxycarbonyl", alone or in combination, means
a radical of the formula aralkyl-O--C(O)-- in which the term
"aralkyl", has the significance given above. An example of an
aralkoxycarbonyl radical is benzyloxycarbonyl.
[0286] The term "aryloxy" means a radical of the formula aryl-O--
in which the term aryl has the significance given above. The
phenoxy radical is an exemplary aryloxy radical.
[0287] The terms "heteroaralkyl" and "heteroaryloxy" mean radicals
structurally similar to aralkyl and aryloxy that are formed from
heteroaryl radicals. Exemplary radicals include 4-picolinyl and
2-pyrimidinoxy, respectively.
[0288] The terms "alkanoyl" or "alkylcarbonyl", alone or in
combination, means an acyl radical derived from an alkanecarboxylic
acid, examples of which include formyl, acetyl, propionyl, butyryl,
valeryl, 4-methylvaleryl, and the like.
[0289] The term "cycloalkylcarbonyl" means an acyl group derived
from a monocyclic or bridged cycloalkanecarboxylic acid such as
cyclopropanecarbonyl, cyclohexanecarbonyl, adamantanecarbonyl, and
the like, or from a benz-fused monocyclic cycloalkanecarboxylic
acid that is optionally substituted by, for example, alkanoylamino,
such as 1,2,3,4-tetrahydro-2-naphthoyl,
2-acetamido-1,2,3,4-tetrahyaro-2-naphthoyl.
[0290] The terms "aralkanoyl" or "aralkylcarbonyl" mean an acyl
radical derived from an aryl-substituted alkanecarboxylic acid such
as phenylacetyl, 3-phenylpropionyl (hydrocinnamoyl),
4-phenylbutyryl, (2-naphthyl)acetyl, 4-chlorohydrocinnamoyl,
4-aminohydrocinnamoyl, 4-methoxyhydrocinnamoyl and the like.
[0291] The terms "aroyl" or "arylcarbonyl" means an acyl radical
derived from an aromatic carboxylic acid. Examples of such radicals
include aromatic carboxylic acids, an optionally substituted
benzoic or naphthoic acid such as benzoyl, 4-chlorobenzoyl,
4-carboxybenzoyl, 4-(benzyloxycarbonyl)benzoyl, 1-naphthoyl,
2-naphthoyl, 6-carboxy-2 naphthoyl,
6-(benzyloxycarbonyl)-2-naphthoyl, 3-benzyloxy-2-naphthoyl,
3-hydroxy-2-naphthoyl, 3-(benzyloxyformamido)-2-naphthoyl, and the
like.
[0292] The term "cycloalkylalkoxycarbonyl" means an acyl group of
the formula cycloalkylalkyl-O--CO-wherein cycloalkylalkyl has the
significance given above. The term "aryloxyalkanoyl" means an acyl
radical of the formula aryl-O-alkanoyl wherein aryl and alkanoyl
have the significance given above. The term
"heterocyclooxycarbonyl", means an acyl group having the formula
heterocyclo-O--CO-- wherein heterocyclo is as defined above.
[0293] The term "heterocycloalkanoyl" is an acyl radical of the
formula heterocyclo-substituted alkane carboxylic acid wherein
heterocyclo has the significance given above. The term
"heterocycloalkoxycarbonyl" means an acyl radical of the formula
heterocyclo-substituted alkane-O--CO-wherein heterocyclo has the
significance given above. The term "heteroaryloxycarbonyl" means an
acyl radical represented by the formula heteroaryl-O--CO-wherein
heteroaryl has the significance given above.
[0294] The term "aminocarbonyl" (carboxamide) alone or in
combination, means an amino-substituted carbonyl (carbamoyl) group
derived from an amine reacted with a carboxylic acid wherein the
amino (amido nitrogen) group is unsubstituted (--NH.sub.2) or a
substituted primary or secondary amino group containing one or two
substituents selected from the group consisting of hydrogen, alkyl,
aryl, aralkyl, cycloalkyl, cycloalkylalkyl radicals and the like,
as recited. A hydroxamate is a N-hydroxycarboxamide.
[0295] The term "aminoalkanoyl" means an acyl group derived from an
amino-substituted alkanecarboxylic acid wherein the amino group can
be a primary or secondary amino group containing substituents
independently selected from hydrogen, alkyl, aryl, aralkyl,
cycloalkyl, cycloalkylalkyl radicals and the like.
[0296] The term "halogen" means fluoride, chloride, bromide or
iodide. The term "haloalkyl" means an alkyl radical having the
significance as defined above wherein one or more hydrogens are
replaced with a halogen. Examples of such haloalkyl radicals
include chloromethyl, 1-bromoethyl, fluoromethyl, difluoromethyl,
trifluoromethyl, 1,1,1-trifluoroethyl and the like.
[0297] The term "perfluoroalkyl" means an alkyl group wherein each
hydrogen has been replaced by a fluorine atom. Examples of such
perfluoroalkyl groups, in addition to trifluoromethyl above, are
perfluorobutyl, perfluoroisopropyl, perfluorododecyl and
perfluorodecyl.
[0298] The term "perfluoroalkoxy" alone or in combination, means a
perfluoroalkyl ether radical wherein the term perfluoroalkyl is as
defined above. Examples of such perfluoroalkoxy groups, in addition
to trifluoromethoxy (F.sub.3C--O--), are perfluorobutoxy,
perfluoroisopropoxy, perfluorododecoxy and perfluorodecoxy.
[0299] The term "perfluoroalkylthio" alone or in combination, means
a perfluoroalkyl thioether radical wherein the term perfluoroalkyl
is as defined above. Examples of such perfluoroalkylthio groups, in
addition to trifluoromethylthio (F.sub.3C--S--), are
perfluorobutylthio, perfluoroisopropylthio, perfluorododecylthio
and perfluorodecylthio.
[0300] The term "aromatic ring" in combinations such as
substituted-aromatic ring sulfone or substituted-aromatic ring
sulfoxide means aryl or heteroaryl as defined before.
[0301] The term "pharmaceutically acceptable" is used adjectivally
herein to mean that the modified noun is appropriate for use in a
pharmaceutical product. Pharmaceutically acceptable cations include
metallic ions and organic ions. More preferred metallic ions
include, but are not limited to appropriate alkali metal (Group Ia)
salts, alkaline earth metal (Group IIa) salts and other
physiological acceptable metal ions. Exemplary ions include
aluminum, calcium, lithium, magnesium, potassium, sodium and zinc
in their usual valences. Preferred organic ions include protonated
tertiary amines and quaternary ammonium cations, including in part,
trimethylamine, diethylamine, N,N'-dibenzylethylenediamine,
chloroprocaine, choline, diethanolamine, ethylenediamine, meglumine
(N-methylglucamine) and procaine. Exemplary pharmaceutically
acceptable acids include without limitation hydrochloric acid,
hydrobromic acid, phosphoric acid, sulfuric acid, methanesulfonic
acid, acetic acid, formic acid, tartaric acid, maleic acid, malic
acid, citric acid, isocitric acid, succinic acid, lactic acid,
gluconic acid, glucuronic acid, pyruvic acid oxalacetic acid,
fumaric acid, propionic acid, aspartic acid, glutamic acid, benzoic
acid, and the like.
[0302] "M" utilized in the reaction schemes that follow represents
a leaving group such as halogen, phosphate ester or sulfate
ester.
Preparation of Useful Compounds
[0303] Schemes A through C and Schemes 1 through 19 hereinbelow
illustrate chemical processes and transformations that can be
useful for the preparation of compounds useful in this invention;
i.e., compounds of formulas I, II, III, IV and V and similar cyclic
inhibitors. In addition, the preparation of compounds of formula VI
and formula VII is illustrated. Compounds of formula VI and formula
VII can be used as intermediates in the preparation of the
compounds of formulas I, II, III, IV and V or pro-drugs or MMP
inhibitors.
[0304] In Schemes A through C, the symbol J independently
represents R.sup.20 or other synthetically useful groups such as
amides, acid chlorides, mixed anhydrides and the like. The n is 0,
1 or 2 and is preferred to be 1 or 2 in Scheme C. The n of these
schemes corresponds to g in formulas VI and VII., and is zero, 1 or
2. The symbol m is 1 or 2. The symbol r is independently 1, 2 or 3.
The symbol P represents a protecting group that can also be a
member of the group R.sup.6. In Scheme A, for simplicity and
clarity of illustration positional isomers are illustrated with a
bond through the ring in standard fashion. Later Schemes typically
only show one positional isomer but positional isomers are
represented by these structures and reactions in a manner
consistent with Formula I, II, III, IV, V, VI, VII above.
Similarly, the symbol B represents O, S, SO, SO.sub.2 and NR.sup.6.
The symbols C and C' independently are electrophilic groups or
groups capable of participating in a condensation reaction. Here to
it should be noted that the six-membered ring is shown for
illustrative purposes but the procedures and/or reagents are
applicable to and represent combinations the permit the preparation
of 5- to 8-membered rings.
[0305] The structures in Schemes 1 through 19 are also shown with
compounds that represent the other compounds of this invention. The
aromatic ring in Scheme C is aryl and heteroaryl. The moieties of
-A-R-E-Y are as defined before. Reactions illustrated involving a
spiroheterocyclic nitrogen atom may not be applicable to those
compounds with sulfur or oxygen. ##STR26##
[0306] Scheme A shows in step 1 the reduction of a heteraryl
compound to a carboxyl derivative. Generally, the first product is
a hydrogen-containing amine heterocycle when the starting material
is aromatic or an R.sup.6-containing heterocycle when a partially
unsaturated heterocycle is the starting material.
[0307] Compound 2 can be treated in several ways depending on the
needs of the chemist. In Step 2, the nitrogen can be protected by
preparing, for example, a carbobenzoxy (Z) or tert-butoxycarbonyl
derivative. Such acylations can be carried out by methods well
known in the art, especially the art of amino acid and peptide
synthesis. The process of acylation with activated carboxyl group-
or activated sulfonyl group-containing reagents to prepare
contemplated compounds is carried out in the same manner. Examples
of such acylating groups are carbonyl azides, halides, anhydrides,
mixed anhydrides, carbodiimide derivatives or other less
traditional activated ester groups such as the hydroxybenzotriazole
derivative. These acylations can be run in the presence of base
including mild bases such as triethylamine or N-ethylmorpholine if
desired. The preparation of some activated ester reagents and their
use to prepare other compounds useful in this invention is
discussed below. It should be recalled that the groups constituting
P and serving as a selectively removable protecting group can also
be included as part of the group R.sup.6.
[0308] Step 4 of Scheme A shows the alkylation or acylation of
Compound 2 to produce compound 5. The process of acylation and
alkylation are as discussed herein. In Step 5, the group J can be
changed if desired. An example of such a change is exchange of an
ester for a THP-protected hydroxamate conversion of a THP-protected
hydroxamate inot a hydroxamate or conversion of an acid into a
protected hydroxamate or the like.
[0309] Steps 3, 7 and 8 show the preparation of sulfur-containing
derivatives of the contemplated compounds or intermediates to those
compounds. The starting material for the above steps (e.g.,
compounds 2, 5 and 6) can be treated with a base to deprotonate the
carbon alpha to the carbonyl function. This anion can be reacted
with a sulfur electrophile to produce a sulfone, sulfoxide or
sulfide. Such electrophiles can be of the form of, for example,
R.sup.24S--SR.sup.24, R.sup.24SO.sub.2C.sup.1, R.sup.24SC.sub.1,
R.sup.24SOC.sub.1, R.sup.24S(O)--SR.sub.24 and the like where
R.sup.24 is as defined before or is an aryl or heteroaryl
sulfur-containing material containing a coupling substituent,
R.sup.3', that can be used to prepare one of the
R.sup.24-containing groups. Preparation of the anion requires a
base and a strong base may be required such as one of the metal
amides, hydrides or alkyls discussed herein. The solvents are
nonprotic, and dipolar aprotic solvents are preferred along with an
inert atmosphere. Subsequent schemes usually utilize R.sup.3 for
the R.sup.24 group for ease of illustration.
[0310] It should be noted that these processes produce sulfides
(thio ethers), sulfoxides or sulfones depending on starting
material. In addition, the sulfides can be oxidized to sulfoxides
or sulfones, and the sulfoxides can be oxidized to their
corresponding sulfone derivatives. The choice of position in the
synthetic sequence to change the oxidation state of sulfur as well
as the decision to change oxidation state is under the control of
the chemist skilled in the art. Methods of oxidizing sulfur are
discussed hereinbelow.
[0311] Scheme A, Steps 6, 9, 10 and 12 independently illustrate the
interconversion of groups within J. Examples of such
interconversions include exchange of an ester for hydroxamic acid
or hydroxamic acid derivative, conversion of a carboxylic acid into
an activated carbonyl derivative or into a hydroxamic acid or
hydroxamic acid derivative (pro-drug or protected derivative), or
removal of a protecting group from a hydroxamate derivative. The
preparation of activated carbonyl compounds their reaction with
nucleophiles such as hydroxamic acid, protected hydroxamates or
hydroxamic acid pro-drugs is discussed below as is the conversion
of protected hydroxamic acid derivatives into hydroxamic acids. The
preparation of, for example, hydroxybenzotriazole/carbodiimide,
derived products is discussed herein. The preparation or hydrolysis
of esters, amides, amide derivatives, acid chlorides, acid
anhydrides, mixed anhydrides and the like are synthetic methods
very well known in the art, and are not discussed in detail herein.
Step 6 illustrates the conversion of compound 4 into compound 9,
without first being converted into compound 7. ##STR27##
[0312] Scheme B illustrates an alternate method of preparing
contemplated compounds. The reagent shown above the arrow in Step 1
is a reagent with two active groups in addition to the heteroatoms
(B) noted before. Here again, the particular reagent illustrated
was selected to permit a clear illustration of the reaction, but it
is also intended to represent reagents that permit the preparation
of the heteroatom position, and 5-, 7- and 8-membered ring size
compounds. These reagents are readily selected by those skilled in
the art.
[0313] C and C' in this Step 1 reagent are independently an
electophile or a group convertible into an electrophile. Such
groups include halides, sulfonic acid esters, epoxides,
thioepoxides, hydroxyl groups, and the like. This reagent is
reacted with a nucleophilic anion of a sulfur containing carbonyl
compound such as compound 1. The anion is formed by deprotonation
of compound 1 and examples of bases suitable for such a
deprotonation are discussed below. Treatment with the above
electrophilic reagent is carried out under alkylating conditions
well known in the art and discussed herein. The product of this
reaction can be either Compound 2 or Compound 3; i.e., the reaction
can be carried out as a pot or two step process as required.
[0314] Step 3 illustrates the interconversion of J groups if
desired as discussed above for Scheme A. Step 4 uses reagent where
C, for example, represents a nucleophile as discussed above and C'
represents an electrophile or a nucleophile such as hydroxyl, thiol
or R.sup.6-amino. It is noted that C' can be, independently, a
nucleophile or an electrophile when m is 2; i.e., the C' groups are
not required to be the same when m is 2. When m is 2, treatment
with a second mole of base provides the skilled chemist an
alternative preparation of Compound 5. When C' is hydroxyl, thiol,
or R.sup.6-amino and m is 2, the person skilled in the art can
condense Compound 4 with, for example, an aldehyde or ketone, under
reductive conditions or with subsequent reduction to form a
contemplated compound. As above, the compound where m is 2 can be
made in one step (one pot process) or two steps, thus permitting
the chemist the choice of having the reagent(s) be the same (one
pot) or different (two step).
[0315] Scheme B also illustrates the interconversions of the groups
within J, the oxidation state of the sulfur and groups on nitrogen;
i.e., R.sup.6 groups, to provide the contemplated compounds. These
methods and processes are discussed above for the reactions of
Scheme A. ##STR28##
[0316] Scheme C illustrates the nucleophilic displacement of a
group D as defined herein. This reaction is carried out in a
similar manner to the displacement reactions discussed herein. The
choice of oxidation state of the sulfur is made by the person
skilled in the art, but sulfoxide or sulfone groups are preferred,
and the sulfone is most preferred. The displacement can be carried
out either before or after the methylene next to the carbonyl group
is reacted to form a spiro heterocyclic group.
[0317] Steps 1, 2 and 3 also illustrate that although the
nucleophilic displacement can be carried out with one nucleophile
(Nu), the product of this reaction can be modified by methods well
known in the art and as shown herein to provide the group -A-R-E-Y
as defined hereinbefore.
[0318] A non-limiting illustration of such a process is provided
when D is fluoride. The fluoride leaving group can be directly
displaced with the anion of 4-trifluoromethylphenol,
4-trifluoromethoxyphenol, 4-trifluoromethylthiophenol and the like
to provide a contemplated compound. This is a one pot process from
Compound 4. Other compounds included in -A-R-E-Y can be prepared by
displacing the fluoride leaving group with ammonia to provide an
amine, which can then be acylated by methods discussed wherein
with, for example, 4-trifluoromethylbenzoyl chloride, to form
another contemplated product compound.
[0319] The R.sup.6 function can be changed and/or further modified
in compounds or at steps in the Schemes as desired or required by
the person skilled in the art to prepare the contemplated
compounds. Interconversion of dual purpose functional groups such
as short or long term protecting groups into other R.sup.6 groups
has been mentioned. Many other routine and/or useful conversions,
including the preparation of synthetic intermediates, are very well
known in the art. A few non-limiting examples of such conversions
or reactions include: reductions; nucleophilic
displacement/substitution reactions; exchange or preparation of
carboxylic or sulfonic acids, amides, esters, acid halides, mixed
anhydrides and the like; electrophilic displacement/substitution
reactions; oxidations; ring/chain conversions, ring opening
reactions, condensation reactions including those involving
sulfonyl or carbonyl groups and/or carbon-hydrogen bonds influenced
by either or both of those groups. The selection of preparative
methods or conversion methods of the contemplated compounds and the
order of the reaction(s) is made by the skilled person. It is
expected that should a particular sequence or method prove to be
undesirable that an alternative will be selected and used. Included
is the choice of preparing/adding the groups in a single step using
a convergent inhibitor strategy or preparing the final R.sup.6
group following a stepwise strategy.
[0320] Thus, in general, the choices of starting material and
reaction conditions can vary as is well known to those skilled in
the art. Usually, no single set of conditions is limiting because
variations can be applied as required. Conditions are also selected
as desired to suit a specific purpose such as small scale
preparations or large scale preparations. In either case, the use
of less safe or less environmentally sound materials or reagents is
usually be minimized. Examples of such materials are diazomethane,
diethyl ether, heavy metal salts, dimethyl sulfide, chloroform,
benzene and the like.
[0321] These reactions can be carried out under a dry inert
atmosphere such a nitrogen or argon if desired. Selected reactions
known to those skilled in the art, can be carried out under a dry
atmosphere such as dry air whereas other synthetic steps, for
example, aqueous acid or base ester or amide hydrolysis, can be
carried out under laboratory air. In addition, some processes of
these syntheses can be carried out in a pressure apparatus at
pressures above, equal to or below atmospheric pressure. The use of
such an apparatus aids in the control of gaseous reagents such as
hydrogen, ammonia, trimethylamine, methylamine, oxygen and the
like, and can also help prevent the leakage of air or humidity into
a reaction in progress. This discussion is not intended to be
exhaustive as it is readily noted that additional or alternative
methods, conditions, reactions or systems can be identified and
used by a chemist of ordinary skill.
[0322] The illustrated reactions are usually carried out at a
temperature of between -25.degree. C. to solvent reflux under an
inert atmosphere such as nitrogen or argon. The solvent or solvent
mixture can vary widely depending upon reagents and other
conditions and can include polar or dipolar aprotic solvents as
listed or mixtures of these solvents. Reactions can be carried out
at lower temperatures such as dry ice/acetone or liquid nitrogen
temperature if desired to carry out such reactions as metalations
or anion formations using strong bases.
[0323] In some cases, amines such as triethylamine, pyridine or
other non-reactive bases can serve as reagents and/or solvents
and/or co-solvents. In some instances, in these reactions and other
reactions in these Schemes, protecting groups can be used to
maintain or retain groups in other parts of a molecule(s) at
locations that is(are) not desired reactive centers. Examples of
such groups that the skilled person can maintain or retain include,
amines, other hydroxyls, thiols, acids and the like. Such
protecting groups can include acyl groups, arylalkyl groups,
carbamoyl groups, ethers, alkoxyalkyl ethers, cycloalkyloxy ethers,
arylalkyl groups, silyl groups including trisubstituted silyl
groups, ester groups and the like. Examples of such protecting
groups include acetyl, trifluoroacetyl, tetrahydropyran (THP),
benzyl, tert-butoxy carbonyl (BOC or TBOC), benzyloxycarbonyl (Z or
CBZ), tert-butyldimethylsilyl (TBDMS) or methoxyethoxymethylene
(MEM) groups. The preparation of such protected compounds as well
as their removal is well known in the art. The protecting groups
can also be used as substituents in the contemplated compounds
whose utility is as a drug rather than as a synthetic
intermediate.
[0324] Many reactions or processes involve bases that can act as
reactants, reagents, deprotonating agents, acid scavengers, salt
forming reagents, solvents, co-solvents and the like. Bases that
can be used include, for example, metal hydroxides such as sodium,
potassium, lithium, cesium or magnesium hydroxide, oxides such as
those of sodium, potassium, lithium, calcium or magnesium, metal
carbonates such as those of sodium, potassium, lithium, cesium,
calcium or magnesium, metal bicarbonates such as sodium bicarbonate
or potassium bicarbonate, primary (I.degree.), secondary
(II.degree.) or tertiary (III.degree.) organic amines such as alkyl
amines, arylalkyl amines, alkylarylalkyl amines, heterocyclic
amines or heteroaryl amines, ammonium hydroxides or quaternary
ammonium hydroxides. As non-limiting examples, such amines can
include triethylamine, trimethylamine, diisopropylamine,
methyldiisopropylamine, diazabicyclononane, tribenzylamine,
dimethylbenzylamine, morpholine, N-methylmorpholine,
N,N'-dimethylpiperazine, N-ethylpiperidine,
1,1,5,5-tetramethylpiperidine, dimethylaminopyridine, pyridine,
quinoline, tetramethylethylenediamine, and the like. Non-limiting
examples of ammonium hydroxides, usually made from amines and
water, can include ammonium hydroxide, triethylammonium hydroxide,
trimethylammonium hydroxide, methyldiiospropylammonium hydroxide,
tribenzylammonium hydroxide, dimethylbenzylammonium hydroxide,
morpholinium hydroxide, N-methylmorpholinium hydroxide,
N,N'-dimethylpiperazinium hydroxide, N-ethylpiperidinium hydroxide,
and the like. As non-limiting examples, quaternary ammonium
hydroxides can include tetraethylammonium hydroxide,
tetramethylammonium hydroxide, dimethyldiiospropyl-ammonium
hydroxide, benzylmethyldiisopropylammonium hydroxide,
methyldiazabicyclononylammonium hydroxide, methyltribenzylammonium
hydroxide, N,N-dimethyl-morpholiniumhydroxide,
N,N,N.sup.1,N'-tetramethylpiperazinium hydroxide, and
N-ethyl-N'-hexylpiperidinium hydroxide and the like.
[0325] Metal hydrides, amides or alcoholates such as calcium
hydride, sodium hydride, potassium hydride, lithium hydride,
aluminum hydride, diisobutylaluminum hydride (DIBAL) sodium
methoxide, potassium tert-butoxide, calcium ethoxide, magnesium
ethoxide, sodium amide, potassium diisopropyl amide and the like
can also be suitable reagents. Organometallic deprotonating agents
such as alkyl or aryl lithium reagents such as methyl lithium,
phenyl lithium, tert-butyl lithium, lithium acetylide or butyl
lithium, Grignard reagents such as methylmagnesium bromide or
methymagnesium chloride, organocadmium reagents such as
dimethylcadmium and the like can also serve as bases for causing
salt formation or catalyzing the reaction. Quaternary ammonium
hydroxides or mixed salts are also useful for aiding phase transfer
couplings or serving as phase transfer reagents. Pharmaceutically
acceptable bases can be reacted with acids to form contemplated
pharmaceutically acceptable salts. It should also be noted that
optically active bases can be used to make optically active salts
which can be used for optical resolutions.
[0326] Generally, reaction media can comprise a single solvent,
mixed solvents of the same or different classes or serve as a
reagent in a single or mixed solvent system. The solvents can be
protic, non-protic or dipolar aprotic. Non-limiting examples of
protic solvents include water, methanol (MeOH), denatured or pure
95% or absolute ethanol, isopropanol and the like. Typical
non-protic solvents include acetone, tetrahydrofuran (THF),
dioxane, diethyl ether, tert-butylmethyl ether (TBME), aromatics
such as xylene, toluene, or benzene, ethyl acetate, methyl acetate,
butyl acetate, trichloroethane, methylene chloride,
ethylenedichloride (EDC), hexane, heptane, isooctane, cyclohexane
and the like. Dipolar aprotic solvents include compounds such as
dimethylformamide (DMF), dimethylacetamide (DMAc), acetonitrile,
DMSO, hexamethylphosphorus triamide (HMPA), nitromethane,
tetramethylurea, N-methylpyrrolidone and the like. Non-limiting
examples of reagents that can be used as solvents or as part of a
mixed solvent system include organic or inorganic mono- or
multi-protic acids or bases such as hydrochloric acid, phosphoric
acid, sulfuric acid, acetic acid, formic acid, citric acid,
succinic acid, triethylamine, morpholine, N-methylmorpholine,
piperidine, pyrazine, piperazine, pyridine, potassium hydroxide,
sodium hydroxide, alcohols or amines for making esters or amides or
thiols for making contemplated products and the like.
[0327] The preparation of compounds contemplated herein can require
the oxidation of nitrogen or sulfur to N-oxide derivatives or
sulfoxides or sulfones. Reagents for this process can include, in a
non-limiting example, peroxymonosulfate (OXONE.RTM.), hydrogen
peroxide, meta-chloroperbenzoic acid, perbenzoic acid, peracetic
acid, perlactic acid, tert-butyl peroxide, tert-butyl hypochlorite,
sodium hydpochlorite, hypochlorous acid, sodium meta-periodate,
periodic acid and the like with the weaker agents being most useful
for the preparation of sulfones and sulfoxides. Protic, non-protic,
dipolar aprotic solvents, either pure or mixed, can be chosen, for
example, methanol/water.
[0328] The oxidation can be carried out at temperature of about
-78.degree. to about 50.degree. degrees Centigrade, and normally
selected from a range -10.degree. C. to about 40.degree. C.
Sulfoxides are best prepared using one equivalent of oxidizing
agent. It can be desirable in the case of more active oxidizing
agents, but not required, that the reactions be carried out under
an inert gas atmosphere with or without degassed solvents. It
should be noted that the oxidation of sulfides to sulfones can be
carried out in one step or two steps via the sulfoxide as desired
by the chemist.
[0329] Reduction is a well known process in the art with a useful
method being hydrogenation. In such cases (catalytic reduction),
there can be a metal catalyst such as Rh, Pd, Pt, Ni or the like
with or without an additional support such as carbon, barium
carbonate and the like. Solvents can be protic or non-protic pure
solvents or mixed solvents as required. The reductions can be
carried out at atmospheric pressure to a pressure of multiple
atmospheres with atmospheric pressure to about 40 pounds per square
inch (psi) preferred or very high pressures in special
hydrogenation equipment well known in the art.
[0330] Reductive alkylation of amines or active methylene compounds
is also a useful method of preparing compounds. Such alkylations
can be carried out under reductive hydrogenation conditions as
presented above using, for example, aldehydes or ketones. Hydride
transfer reagents such as sodium cyanoborohydride, aluminum
hydride, lithium aluminumhydride, borane, sodium borohydride,
di-isobutylaluminum hydride and the like are also useful as
reagents for reductive alkylation. Acyl groups can be reduced in a
similar manner to produce substituted amines.
[0331] Alternative methods of alkylating carbon or nitrogen are
direct alkylation. Such an alkylation, as is well known in the art,
can be carried by treatment of an activated carbon containing at
least one hydrogen with base to form the corresponding anion,
adding an electrophilic reagent and permitting the SN2 reaction to
proceed. An amine to be alkylated is treated similarly except that
deprotonation may not be required. Electrophiles include halogen
derivatives, sulfonate esters, epoxides and the like.
[0332] Bases and solvents for alkylation reactions are those
discussed above. Preferred are bases that are hindered such that
competition with the electrophile is minimized. Additional
preferred bases are metal hydrides, amide anions or organometallic
bases such as n-butyl lithium. The solvents, solvent mixtures or
solvent/reagent mixtures discussed are satisfactory but non-protic
or dipolar aprotic solvents such as acetone, acetonitrile, DMF and
the like are examples of preferred classes.
[0333] Acids are used in many reactions during various syntheses.
For example, removal of the THP protecting group to produce the
hydroxamic acid. The acid can be a mono-, di- or tri-protic organic
or inorganic acid. Examples of acids include hydrochloric acid,
phosphoric acid, sulfuric acid, acetic acid, formic acid, citric
acid, succinic acid, hydrobromic acid, hydrofluoric acid, carbonic
acid, phosphorus acid, p-toluene sulfonic acid, trifluoromethane
sulfonic acid, trifluoroacetic acid, difluoroacetic acid, benzoic
acid, methane sulfonic acid, benzene sulfonic acid,
2,6-dimethylbenzene sulfonic acid, trichloroacetic acid,
nitrobenzoic acid, dinitrobenzoic acid, trinitrobenzoic acid, and
the like. They can also be Lewis acids such as aluminum chloride,
borontrifluoride, antimony pentafluoride and the like. Acids in a
protic can also be used to hydrolyze esters, amides and the like as
well as catalyze exchange reactions.
[0334] Conversion of a carboxylic acid protected as an ester or
amide into a hydroxamic acid or hydroxamic acid derivative such as
an O-arylalkylether or O-cycloalkoxyalkylether group is useful. In
the case where hydroxylamine is used, treatment of an ester or
amide with one or more equivalents of hydroxylamine hydrochloride
at room temperature or above in a solvent or solvents, usually
protic or partially protic, such as those listed above can provide
a hydroxamic acid directly. This exchange process can be further
catalyzed by the addition of additional acid. Alternatively, a base
such as a salt of an alcohol used as a solvent, for example, sodium
methoxide in methanol, can be used to form hydroxylamine from
hydroxylamine hydrochloride in situ which can exchange with an
ester or amide. As mentioned above, exchange can be carried out
with a protected hydroxylamine such as
tetrahydropyranylhydroxyamine (THPONH.sub.2), benzylhydroxylamine
(BnONH.sub.2), and the like in which case compounds such as shown
in Schemes A, B and C that are tetrahydropyranyl (THP) or benzyl
(Bn) hydroxamic acid derivatives are the products. Removal of the
protecting groups when desired, for example, following further
transformations in another part of the molecule or following
storage, is accomplished by standard methods well known in the art
such as acid hydrolysis of the THP group as discussed above or
reductive removal of the benzyl group with hydrogen and a metal
catalyst such as palladium, platinum, palladium on carbon or
nickel.
[0335] In the case where R.sup.20 is hydroxyl; i.e., where the
intermediate is a carboxylic acid, standard coupling reactions can
be used. For example, the acid can be converted into an acid
chloride, mixed anhydride or activated ester such as
hydroxybenzotriazole and treated with hydroxylamine or a protected
hydroxylamine in the presence of a non-competitive base to the
nitrogen acylated compound. This is the same product as discussed
above. Couplings of this nature are well known in the art and
especially the art related to peptide and amino acid chemistry.
[0336] Compounds contemplated herein can possess one or more
asymmetric carbon atoms and are thus capable of existing in the
form of optical isomers, enantiomers, diastereoisomers, as well as
in the form of racemic or nonracemic mixtures. A compound can also
exist in other isomeric forms such as ortho, meta and para isomers,
cis and trans isomers, syn and anti isomers, E and Z isomers,
tautomeric isomers, alpha and beta isomers, axial and equatorial
isomers and isomers due to hindered rotation. An isomer can exist
in equilibrium with another isomer in a mammal or a test system.
Such a compound can also exist as an isomeric equilibrium system
with a solvent or water, for example, as a hydrated ketone or
aldehyde, as is well known in the art. All isomers are included as
compounds of this invention.
[0337] The chemical reactions described above are generally
disclosed in terms of their broadest application to the preparation
of the compounds of this invention. Occasionally, the reactions may
not be applicable as described to each compound included within the
disclosed scope. The compounds for which this occurs will be
readily recognized by those skilled in the art. In all such cases,
either the reactions can be successfully performed by conventional
modifications known to those skilled in the art, e.g., by
appropriate protection of interfering groups, by changing to
alternative conventional reagents, by routine modification of
reaction conditions, and the like, or other reactions disclosed
herein or otherwise conventional, are applicable to the preparation
of the corresponding compounds that are contemplated. ##STR29##
##STR30## ##STR31## ##STR32## ##STR33## ##STR34## ##STR35##
##STR36## ##STR37## ##STR38## ##STR39## ##STR40## ##STR41##
##STR42## ##STR43## ##STR44## ##STR45## ##STR46## ##STR47##
[0338] Table 1 through Table 150, below, show several contemplated
aromatic sulfone hydroxamic acid inhibitor compounds or structural
formulas that illustrate substituent groups. Each group of
compounds is illustrated by a generic formula, or formulae,
followed by a series of preferred moieties or groups that
constitute various substituents that can be attached at the
position clearly shown in the generic structure. The substituent
symbols, e.g., R1 and R2 and R3, are as shown in each Table, and
are typically not those used before. One or two bonds (wavy lines)
are shown with those substituents to indicate the respective
positions of attachment in the illustrated compound. This system is
well known in the chemical communication arts and is widely used in
scientific papers and presentations. For example in Table 2,
R.sup.1 and R.sup.2 together with the atoms to which they are
bonded is the variable group with the structural entities that can
substitute for R.sup.1 and R.sup.2 together shown in the balance of
that table. TABLE-US-00001 TABLE 1 ##STR48## ##STR49## 1 ##STR50##
2 ##STR51## 3 ##STR52## 4 ##STR53## 5 ##STR54## 6 ##STR55## 7
##STR56## 8 ##STR57## 9 ##STR58## 10 ##STR59## 11 ##STR60## 12
##STR61##
[0339] TABLE-US-00002 TABLE 2 ##STR62## II 1 ##STR63## 2 ##STR64##
3 ##STR65## 4 ##STR66## 5 ##STR67## 6 ##STR68## 7 ##STR69## 8
##STR70## 9 ##STR71## 10 ##STR72## 11 ##STR73## 12 ##STR74##
[0340] TABLE-US-00003 TABLE 3 ##STR75## ##STR76## 1 ##STR77## 2
##STR78## 3 ##STR79## 4 ##STR80## 5 ##STR81## 6 ##STR82## 7
##STR83## 8 ##STR84## 9 ##STR85## 10 ##STR86## 11 ##STR87## 12
##STR88## 13 ##STR89## 14 ##STR90## 15 ##STR91## 16 ##STR92## 17
##STR93## 18 ##STR94##
[0341] TABLE-US-00004 TABLE 4 ##STR95## ##STR96## 1 ##STR97## 2
##STR98## 3 ##STR99## 4 ##STR100## 5 ##STR101## 6 ##STR102## 7
##STR103## 8 ##STR104## 9 ##STR105## 10 ##STR106## 11 ##STR107## 12
##STR108## 13 ##STR109## 14 ##STR110## 15 ##STR111## 16 ##STR112##
17 ##STR113## 18 ##STR114## 19 ##STR115## 20 ##STR116## 21
##STR117##
[0342] TABLE-US-00005 TABLE 5 ##STR118## ##STR119## 1 ##STR120## 2
##STR121## 3 ##STR122## 4 ##STR123## 5 ##STR124## 6 ##STR125## 7
##STR126## 8 ##STR127## 9 ##STR128## 10 ##STR129## 11 ##STR130## 12
##STR131## 13 ##STR132## 14 ##STR133## 15 ##STR134## 16 ##STR135##
17 ##STR136## 18 ##STR137## 19 ##STR138## 20 ##STR139## 21
##STR140## 22 ##STR141##
[0343] TABLE-US-00006 TABLE 6 ##STR142## ##STR143## 1 ##STR144## 2
##STR145## 3 ##STR146## 4 ##STR147## 5 ##STR148## 6 ##STR149## 7
##STR150## 8 ##STR151## 9 ##STR152## 10 ##STR153## 11 ##STR154## 12
##STR155## 13 ##STR156## 14 ##STR157## 15 ##STR158## 16 ##STR159##
17 ##STR160## 18 ##STR161## 19 ##STR162## 20 ##STR163## 21
##STR164## 22 ##STR165## 23 ##STR166## 24 ##STR167## 25 ##STR168##
26 ##STR169## 27 ##STR170## 28 ##STR171## 29 ##STR172## 30
##STR173##
[0344] TABLE-US-00007 TABLE 7 ##STR174## ##STR175## 1 ##STR176## 2
##STR177## 3 ##STR178## 4 ##STR179## 5 ##STR180## 6 ##STR181## 7
##STR182## 8 ##STR183## 9 ##STR184## 10 ##STR185## 11 ##STR186## 12
##STR187## 13 ##STR188## 14 ##STR189## 15 ##STR190## 16 ##STR191##
17 ##STR192## 18 ##STR193## 19 ##STR194## 20 ##STR195## 21
##STR196##
[0345] TABLE-US-00008 TABLE 8 ##STR197## ##STR198## 1 ##STR199## 2
##STR200## 3 ##STR201## 4 ##STR202## 5 ##STR203## 6 ##STR204## 7
##STR205## 8 ##STR206## 9 ##STR207## 10 ##STR208## 11
##STR209##
[0346] TABLE-US-00009 TABLE 9 ##STR210## ##STR211## 1 ##STR212## 2
##STR213## 3 ##STR214## 4 ##STR215## 5 ##STR216## 6 ##STR217## 7
##STR218## 8 ##STR219## 9 ##STR220## 10 ##STR221## 11 ##STR222## 12
##STR223## 13 ##STR224## 14 ##STR225## 15 ##STR226## 16 ##STR227##
17 ##STR228## 18 ##STR229## 19 ##STR230## 20 ##STR231## 21
##STR232##
[0347] TABLE-US-00010 TABLE 10 ##STR233## ##STR234## 1 ##STR235## 2
##STR236## 3 ##STR237## 4 ##STR238## 5 ##STR239## 6 ##STR240## 7
##STR241## 8 ##STR242## 9 ##STR243## 10 ##STR244## 11 ##STR245## 12
##STR246## 13 ##STR247## 14 ##STR248## 15 ##STR249## 16 ##STR250##
17 ##STR251## 18 ##STR252##
[0348] TABLE-US-00011 TABLE 11 ##STR253## ##STR254## 1 ##STR255## 2
##STR256## 3 ##STR257## 4 ##STR258## 5 ##STR259## 6 ##STR260## 7
##STR261## 8 ##STR262## 9 ##STR263## 10 ##STR264## 11 ##STR265## 12
##STR266## 13 ##STR267## 14 ##STR268## 15 ##STR269## 16 ##STR270##
17 ##STR271## 18 ##STR272## 19 ##STR273## 20 ##STR274## 21
##STR275##
[0349] TABLE-US-00012 TABLE 12 ##STR276## ##STR277## 1 ##STR278## 2
##STR279## 3 ##STR280## 4 ##STR281## 5 ##STR282## 6 ##STR283## 7
##STR284## 8 ##STR285## 9 ##STR286## 10 ##STR287## 11 ##STR288## 12
##STR289## 13 ##STR290## 14 ##STR291## 15 ##STR292## 16 ##STR293##
17 ##STR294## 18 ##STR295## 19 ##STR296## 20 ##STR297## 21
##STR298## 22 ##STR299##
[0350] TABLE-US-00013 TABLE 13 ##STR300## ##STR301## 1 ##STR302## 2
##STR303## 3 ##STR304## 4 ##STR305## 5 ##STR306## 6 ##STR307## 7
##STR308## 8 ##STR309## 9 ##STR310## 10 ##STR311## 11 ##STR312## 12
##STR313## 13 ##STR314## 14 ##STR315## 15 ##STR316## 16 ##STR317##
17 ##STR318## 18 ##STR319## 19 ##STR320## 20 ##STR321## 21
##STR322## 22 ##STR323## 23 ##STR324## 24 ##STR325## 25 ##STR326##
26 ##STR327## 27 ##STR328## 28 ##STR329## 29 ##STR330## 30
##STR331##
[0351] TABLE-US-00014 TABLE 14 ##STR332## ##STR333## 1 ##STR334## 2
##STR335## 3 ##STR336## 4 ##STR337## 5 ##STR338## 6 ##STR339## 7
##STR340## 8 ##STR341## 9 ##STR342## 10 ##STR343## 11 ##STR344## 12
##STR345## 13 ##STR346## 14 ##STR347## 15 ##STR348## 16 ##STR349##
17 ##STR350## 18 ##STR351## 19 ##STR352## 20 ##STR353## 21
##STR354##
[0352] TABLE-US-00015 TABLE 15 ##STR355## ##STR356## 1 ##STR357## 2
##STR358## 3 ##STR359## 4 ##STR360## 5 ##STR361## 6 ##STR362## 7
##STR363## 8 ##STR364## 9 ##STR365## 10 ##STR366## 11
##STR367##
[0353] TABLE-US-00016 TABLE 16 ##STR368## ##STR369## 1 ##STR370## 2
##STR371## 3 ##STR372## 4 ##STR373## 5 ##STR374## 6 ##STR375## 7
##STR376## 8 ##STR377## 9 ##STR378## 10 ##STR379## 11 ##STR380## 12
##STR381## 13 ##STR382## 14 ##STR383## 15 ##STR384## 16 ##STR385##
17 ##STR386## 18 ##STR387## 19 ##STR388## 20 ##STR389## 21
##STR390##
[0354] TABLE-US-00017 TABLE 17 ##STR391## ##STR392## 1 ##STR393## 2
##STR394## 3 ##STR395## 4 ##STR396## 5 ##STR397## 6 ##STR398## 7
##STR399## 8 ##STR400## 9 ##STR401## 10 ##STR402## 11 ##STR403## 12
##STR404## 13 ##STR405## 14 ##STR406## 15 ##STR407## 16 ##STR408##
17 ##STR409## 18 ##STR410##
[0355] TABLE-US-00018 TABLE 18 ##STR411## ##STR412## 1 ##STR413## 2
##STR414## 3 ##STR415## 4 ##STR416## 5 ##STR417## 6 ##STR418## 7
##STR419## 8 ##STR420## 9 ##STR421## 10 ##STR422## 11 ##STR423## 12
##STR424## 13 ##STR425## 14 ##STR426## 15 ##STR427## 16 ##STR428##
17 ##STR429## 18 ##STR430## 19 ##STR431## 20 ##STR432## 21
##STR433##
[0356] TABLE-US-00019 TABLE 19 ##STR434## ##STR435## 1 ##STR436## 2
##STR437## 3 ##STR438## 4 ##STR439## 5 ##STR440## 6 ##STR441## 7
##STR442## 8 ##STR443## 9 ##STR444## 10 ##STR445## 11 ##STR446## 12
##STR447## 13 ##STR448## 14 ##STR449## 15 ##STR450## 16 ##STR451##
17 ##STR452## 18 ##STR453## 19 ##STR454## 20 ##STR455## 21
##STR456## 22 ##STR457##
[0357] TABLE-US-00020 TABLE 20 ##STR458## ##STR459## 1 ##STR460## 2
##STR461## 3 ##STR462## 4 ##STR463## 5 ##STR464## 6 ##STR465## 7
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[0358] TABLE-US-00021 TABLE 21 ##STR490## ##STR491## 1 ##STR492## 2
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[0361] TABLE-US-00024 TABLE 24 ##STR549## ##STR550## 1 ##STR551## 2
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[0362] TABLE-US-00025 TABLE 25 ##STR569## ##STR570## 1 ##STR571## 2
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[0363] TABLE-US-00026 TABLE 26 ##STR592## ##STR593## 1 ##STR594## 2
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[0364] TABLE-US-00027 TABLE 27 ##STR616## ##STR617## 1 ##STR618## 2
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[0365] TABLE-US-00028 TABLE 28 ##STR648## ##STR649## 1 ##STR650## 2
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[0366] TABLE-US-00029 TABLE 29 ##STR671## ##STR672## 1 ##STR673## 2
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[0367] TABLE-US-00030 TABLE 30 ##STR684## ##STR685## 1 ##STR686## 2
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[0368] TABLE-US-00031 TABLE 31 ##STR704## ##STR705## 1 ##STR706## 2
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[0369] TABLE-US-00032 TABLE 32 ##STR727## ##STR728## 1 ##STR729## 2
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[0370] TABLE-US-00033 TABLE 33 ##STR751## ##STR752## 1 ##STR753## 2
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[0371] TABLE-US-00034 TABLE 34 ##STR783## ##STR784## 1 ##STR785## 2
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[0372] TABLE-US-00035 TABLE 35 ##STR806## ##STR807## 1 ##STR808## 2
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[0373] TABLE-US-00036 TAABLE 36 ##STR819## ##STR820## 1 ##STR821##
2 ##STR822## 3 ##STR823## 4 ##STR824## 5 ##STR825## 6 ##STR826## 7
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[0374] TABLE-US-00037 TABLE 37 ##STR842## ##STR843## 1 ##STR844## 2
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[0375] TABLE-US-00038 TABLE 38 ##STR862## ##STR863## 1 ##STR864## 2
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[0376] TABLE-US-00039 TABLE 39 ##STR885## ##STR886## 1 ##STR887## 2
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[0377] TABLE-US-00040 TABLE 40 ##STR909## ##STR910## 1 ##STR911## 2
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[0378] TABLE-US-00041 TABLE 41 ##STR941## ##STR942## 1 ##STR943## 2
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[0379] TABLE-US-00042 TABLE 42 ##STR964## ##STR965## 1 ##STR966## 2
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[0380] TABLE-US-00043 TABLE 43 ##STR977## ##STR978## 1 ##STR979## 2
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[0381] TABLE-US-00044 TABLE 44 ##STR1000## ##STR1001## 1
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[0382] TABLE-US-00045 TABLE 45 ##STR1020## ##STR1021## 1
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[0383] TABLE-US-00046 TABLE 46 ##STR1043## ##STR1044## 1
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[0384] TABLE-US-00047 TABLE 47 ##STR1067## ##STR1068## 1
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##STR1098##
[0385] TABLE-US-00048 TABLE 48 ##STR1099## ##STR1100## 1
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[0386] TABLE-US-00049 TABLE 49 ##STR1122## ##STR1123## 1
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[0387] TABLE-US-00050 TABLE 50 ##STR1135## ##STR1136## 1
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[0388] TABLE-US-00051 TABLE 51 ##STR1158## ##STR1159## 1
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[0389] TABLE-US-00052 TABLE 52 ##STR1178## ##STR1179## 1
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[0390] TABLE-US-00053 TABLE 53 ##STR1201## ##STR1202## 1
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[0391] TABLE-US-00054 TABLE 54 ##STR1225## ##STR1226## 1
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[0392] TABLE-US-00055 TABLE 55 ##STR1257## ##STR1258## 1
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[0393] TABLE-US-00056 TABLE 56 ##STR1280## ##STR1281## 1
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[0394] TABLE-US-00057 TABLE 57 ##STR1293## ##STR1294## 1
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[0395] TABLE-US-00058 TABLE 58 ##STR1316## ##STR1317## 1
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[0396] TABLE-US-00059 TABLE 59 ##STR1336## ##STR1337## 1
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[0397] TABLE-US-00060 TABLE 60 ##STR1359## ##STR1360## 1
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[0398] TABLE-US-00061 TABLE 61 ##STR1383## ##STR1384## 1
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[0399] TABLE-US-00062 TABLE 62 ##STR1415## ##STR1416## 1
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[0400] TABLE-US-00063 TABLE 63 ##STR1438## ##STR1439## 1
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[0401] TABLE-US-00064 TABLE 64 ##STR1451## ##STR1452## 1
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[0402] TABLE-US-00065 TABLE 65 ##STR1474## ##STR1475## 1
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[0403] TABLE-US-00066 TABLE 66 ##STR1494## ##STR1495## 1
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[0404] TABLE-US-00067 TABLE 67 ##STR1517## ##STR1518## 1
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[0405] TABLE-US-00068 TABLE 68 ##STR1541## ##STR1542## 1
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[0406] TABLE-US-00069 TABLE 69 ##STR1573## ##STR1574## 1
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[0407] TABLE-US-00070 TABLE 70 ##STR1596## ##STR1597## 1
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[0408] TABLE-US-00071 TABLE 71 ##STR1609## ##STR1610## 1
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[0409] TABLE-US-00072 TABLE 72 ##STR1632## ##STR1633## 1
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[0410] TABLE-US-00073 TABLE 73 ##STR1652## ##STR1653## 1
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[0411] TABLE-US-00074 TABLE 74 ##STR1675## ##STR1676## 1
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[0425] TABLE-US-00088 TABLE 88 ##STR1991## ##STR1992## 1
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[0426] TABLE-US-00089 TABLE 89 ##STR2015## ##STR2016## 1
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[0431] TABLE-US-00094 TABLE 94 ##STR2126## ##STR2127## 1
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[0432] TABLE-US-00095 TABLE 95 ##STR2149## ##STR2150## 1
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[0433] TABLE-US-00096 TABLE 96 ##STR2173## ##STR2174## 1
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[0434] TABLE-US-00097 TABLE 97 ##STR2205## ##STR2206## 1
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[0436] TABLE-US-00099 TABLE 99 ##STR2241## ##STR2242## 1
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[0438] TABLE-US-00101 TABLE 101 ##STR2284## ##STR2285## 1
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[0439] TABLE-US-00102 TABLE 102 ##STR2307## ##STR2308## 1
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[0443] TABLE-US-00106 TABLE 106 ##STR2399## ##STR2400## 1
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[0445] TABLE-US-00108 TABLE 108 ##STR2442## ##STR2443## 1
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[0446] TABLE-US-00109 TABLE 109 ##STR2465## ##STR2466## 1
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[0447] TABLE-US-00110 TABLE 110 ##STR2489## ##STR2490## 1
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[0448] TABLE-US-00111 TABLE 111 ##STR2521## ##STR2522## 1
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[0449] TABLE-US-00112 TABLE 112 ##STR2544## ##STR2545## 1
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[0450] TABLE-US-00113 TABLE 113 ##STR2557## ##STR2558## 1
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[0451] TABLE-US-00114 TABLE 114 ##STR2580## ##STR2581## 1
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[0452] TABLE-US-00115 TABLE 115 ##STR2600## ##STR2601## 1
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[0453] TABLE-US-00116 TABLE 116 ##STR2623## ##STR2624## 1
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[0454] TABLE-US-00117 TABLE 117 ##STR2647## ##STR2648## 1
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[0455] TABLE-US-00118 TABLE 118 ##STR2678## ##STR2679## 1
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[0456] TABLE-US-00119 TABLE 119 ##STR2691## ##STR2692## 1
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[0457] TABLE-US-00120 TABLE 120 ##STR2714## ##STR2715## 1
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[0458] TABLE-US-00121 TABLE 121 ##STR2734## ##STR2735## 1
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[0459] TABLE-US-00122 TABLE 122 ##STR2757## ##STR2758## 1
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[0460] TABLE-US-00123 TABLE 123 ##STR2781## ##STR2782## 1
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[0461] TABLE-US-00124 TABLE 124 ##STR2813## ##STR2814## 1
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[0462] TABLE-US-00125 TABLE 125 ##STR2836## ##STR2837## 1
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[0463] TABLE-US-00126 TABLE 126 ##STR2849## ##STR2850## 1
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6 ##STR2856## 7 ##STR2857## 8 ##STR2858## 9 ##STR2859## 10
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##STR2864## 15 ##STR2865## 16 ##STR2866## 17 ##STR2867## 18
##STR2868## 19 ##STR2869## 20 ##STR2870## 21 ##STR2871##
[0464] TABLE-US-00127 TABLE 127 ##STR2872## ##STR2873## 1
##STR2874## 2 ##STR2875## 3 ##STR2876## 4 ##STR2877## 5 ##STR2878##
6 ##STR2879## 7 ##STR2880## 8 ##STR2881## 9 ##STR2882## 10
##STR2883## 11 ##STR2884## 12 ##STR2885## 13 ##STR2886## 14
##STR2887## 15 ##STR2888## 16 ##STR2889## 17 ##STR2890## 18
##STR2891## 19 ##STR2892## 20 ##STR2893## 21 ##STR2894##
[0465] TABLE-US-00128 TABLE 128 ##STR2895## ##STR2896## 1
##STR2897## 2 ##STR2898## 3 ##STR2899## 4 ##STR2900## 5 ##STR2901##
6 ##STR2902## 7 ##STR2903## 8 ##STR2904## 9 ##STR2905## 10
##STR2906## 11 ##STR2907## 12 ##STR2908## 13 ##STR2909## 14
##STR2910## 15 ##STR2911## 16 ##STR2912## 17 ##STR2913## 18
##STR2914## 19 ##STR2915## 20 ##STR2916## 21 ##STR2917##
[0466] TABLE-US-00129 TABLE 129 ##STR2918## ##STR2919## 1
##STR2920## 2 ##STR2921## 3 ##STR2922## 4 ##STR2923## 5 ##STR2924##
6 ##STR2925## 7 ##STR2926## 8 ##STR2927## 9 ##STR2928## 10
##STR2929## 11 ##STR2930## 12 ##STR2931## 13 ##STR2932## 14
##STR2933## 15 ##STR2934## 16 ##STR2935## 17 ##STR2936## 18
##STR2937## 19 ##STR2938## 20 ##STR2939## 21 ##STR2940## 22
##STR2941## 23 ##STR2942## 24 ##STR2943## 25 ##STR2944## 26
##STR2945##
[0467] TABLE-US-00130 TABLE 130 ##STR2946## ##STR2947## 1
##STR2948## 2 ##STR2949## 3 ##STR2950## 4 ##STR2951## 5 ##STR2952##
6 ##STR2953## 7 ##STR2954## 8 ##STR2955## 9 ##STR2956## 10
##STR2957## 11 ##STR2958## 12 ##STR2959## 13 ##STR2960## 14
##STR2961## 15 ##STR2962## 16 ##STR2963## 17 ##STR2964## 18
##STR2965## 19 ##STR2966## 20 ##STR2967## 21 ##STR2968## 22
##STR2969## 23 ##STR2970## 24 ##STR2971## 25 ##STR2972## 26
##STR2973##
[0468] TABLE-US-00131 TABLE 131 ##STR2974## ##STR2975## 1
##STR2976## 2 ##STR2977## 3 ##STR2978## 4 ##STR2979## 5 ##STR2980##
6 ##STR2981## 7 ##STR2982## 8 ##STR2983## 9 ##STR2984## 10
##STR2985## 11 ##STR2986## 12 ##STR2987## 13 ##STR2988## 14
##STR2989## 15 ##STR2990## 16 ##STR2991## 17 ##STR2992## 18
##STR2993## 19 ##STR2994## 20 ##STR2995## 21 ##STR2996## 22
##STR2997## 23 ##STR2998## 24 ##STR2999## 25 ##STR3000## 26
##STR3001##
[0469] TABLE-US-00132 TABLE 132 ##STR3002## ##STR3003## 1
##STR3004## 2 ##STR3005## 3 ##STR3006## 4 ##STR3007## 5 ##STR3008##
6 ##STR3009## 7 ##STR3010## 8 ##STR3011## 9 ##STR3012## 10
##STR3013## 11 ##STR3014## 12 ##STR3015## 13 ##STR3016## 14
##STR3017## 15 ##STR3018## 16 ##STR3019## 17 ##STR3020## 18
##STR3021## 19 ##STR3022## 20 ##STR3023## 21 ##STR3024## 22
##STR3025## 23 ##STR3026## 24 ##STR3027## 25 ##STR3028## 26
##STR3029##
[0470] TABLE-US-00133 TABLE 133 ##STR3030## ##STR3031## 1
##STR3032## 2 ##STR3033## 3 ##STR3034## 4 ##STR3035## 5 ##STR3036##
6 ##STR3037## 7 ##STR3038## 8 ##STR3039## 9 ##STR3040## 10
##STR3041## 11 ##STR3042## 12 ##STR3043## 13 ##STR3044## 14
##STR3045## 15 ##STR3046## 16 ##STR3047## 17 ##STR3048## 18
##STR3049## 19 ##STR3050## 20 ##STR3051## 21 ##STR3052## 22
##STR3053## 23 ##STR3054## 24 ##STR3055## 25 ##STR3056## 26
##STR3057##
[0471] TABLE-US-00134 TABLE 134 ##STR3058## ##STR3059## 1
##STR3060## 2 ##STR3061## 3 ##STR3062## 4 ##STR3063## 5 ##STR3064##
6 ##STR3065## 7 ##STR3066## 8 ##STR3067## 9 ##STR3068## 10
##STR3069## 11 ##STR3070## 12 ##STR3071## 13 ##STR3072## 14
##STR3073## 15 ##STR3074## 16 ##STR3075## 17 ##STR3076## 18
##STR3077## 19 ##STR3078## 20 ##STR3079## 21 ##STR3080## 22
##STR3081## 23 ##STR3082## 24 ##STR3083## 25 ##STR3084## 26
##STR3085##
[0472] TABLE-US-00135 TABLE 135 ##STR3086## ##STR3087## 1
##STR3088## 2 ##STR3089## 3 ##STR3090## 4 ##STR3091## 5 ##STR3092##
6 ##STR3093## 7 ##STR3094## 8 ##STR3095## 9 ##STR3096## 10
##STR3097## 11 ##STR3098## 12 ##STR3099## 13 ##STR3100## 14
##STR3101## 15 ##STR3102## 16 ##STR3103##
[0473] TABLE-US-00136 TABLE 136 ##STR3104## ##STR3105## 1
##STR3106## 2 ##STR3107## 3 ##STR3108## 4 ##STR3109## 5 ##STR3110##
6 ##STR3111## 7 ##STR3112## 8 ##STR3113## 9 ##STR3114## 10
##STR3115## 11 ##STR3116## 12 ##STR3117## 13 ##STR3118## 14
##STR3119## 15 ##STR3120## 16 ##STR3121##
[0474] TABLE-US-00137 TABLE 137 ##STR3122## ##STR3123## 1
##STR3124## 2 ##STR3125## 3 ##STR3126## 4 ##STR3127## 5 ##STR3128##
6 ##STR3129## 7 ##STR3130## 8 ##STR3131## 9 ##STR3132## 10
##STR3133## 11 ##STR3134## 12 ##STR3135## 13 ##STR3136## 14
##STR3137## 15 ##STR3138## 16 ##STR3139##
[0475] TABLE-US-00138 TABLE 138 ##STR3140## ##STR3141## 1
##STR3142## 2 ##STR3143## 3 ##STR3144## 4 ##STR3145## 5 ##STR3146##
6 ##STR3147## 7 ##STR3148## 8 ##STR3149## 9 ##STR3150## 10
##STR3151## 11 ##STR3152## 12 ##STR3153## 13 ##STR3154## 14
##STR3155## 15 ##STR3156## 16 ##STR3157##
[0476] TABLE-US-00139 TABLE 139 ##STR3158## ##STR3159## 1
##STR3160## 2 ##STR3161## 3 ##STR3162## 4 ##STR3163## 5 ##STR3164##
6 ##STR3165## 7 ##STR3166## 8 ##STR3167## 9 ##STR3168## 10
##STR3169## 11 ##STR3170## 12 ##STR3171## 13 ##STR3172## 14
##STR3173## 15 ##STR3174## 16 ##STR3175##
[0477] TABLE-US-00140 TABLE 140 ##STR3176## ##STR3177## 1
##STR3178## 2 ##STR3179## 3 ##STR3180## 4 ##STR3181## 5 ##STR3182##
6 ##STR3183## 7 ##STR3184## 8 ##STR3185## 9 ##STR3186## 10
##STR3187## 11 ##STR3188## 12 ##STR3189## 13 ##STR3190## 14
##STR3191## 15 ##STR3192## 16 ##STR3193##
[0478] TABLE-US-00141 TABLE 141 ##STR3194## ##STR3195## 1
##STR3196## 2 ##STR3197## 3 ##STR3198## 4 ##STR3199## 5 ##STR3200##
6 ##STR3201## 7 ##STR3202## 8 ##STR3203## 9 ##STR3204## 10
##STR3205## 11 ##STR3206## 12 ##STR3207## 13 ##STR3208## 14
##STR3209## 15 ##STR3210## 16 ##STR3211##
[0479] TABLE-US-00142 TABLE 142 ##STR3212## ##STR3213## 1
##STR3214## 2 ##STR3215## 3 ##STR3216## 4 ##STR3217## 5 ##STR3218##
6 ##STR3219## 7 ##STR3220## 8 ##STR3221## 9 ##STR3222## 10
##STR3223## 11 ##STR3224## 12 ##STR3225## 13 ##STR3226## 14
##STR3227## 15 ##STR3228## 16 ##STR3229##
[0480] TABLE-US-00143 TABLE 143 ##STR3230## ##STR3231## 1
##STR3232## 2 ##STR3233## 3 ##STR3234## 4 ##STR3235## 5 ##STR3236##
6 ##STR3237## 7 ##STR3238## 8 ##STR3239## 9 ##STR3240## 10
##STR3241## 11 ##STR3242## 12 ##STR3243##
[0481] TABLE-US-00144 TABLE 144 ##STR3244## ##STR3245## 1
##STR3246## 2 ##STR3247## 3 ##STR3248## 4 ##STR3249## 5 ##STR3250##
6 ##STR3251## 7 ##STR3252## 8 ##STR3253## 9 ##STR3254## 10
##STR3255## 11 ##STR3256## 12 ##STR3257##
[0482] TABLE-US-00145 TABLE 145 ##STR3258## ##STR3259## 1
##STR3260## 2 ##STR3261## 3 ##STR3262## 4 ##STR3263## 5 ##STR3264##
6 ##STR3265## 7 ##STR3266## 8 ##STR3267## 9 ##STR3268## 10
##STR3269## 11 ##STR3270## 12 ##STR3271##
[0483] TABLE-US-00146 TABLE 146 ##STR3272## ##STR3273## 1
##STR3274## 2 ##STR3275## 3 ##STR3276## 4 ##STR3277## 5 ##STR3278##
6 ##STR3279## 7 ##STR3280## 8 ##STR3281## 9 ##STR3282## 10
##STR3283## 11 ##STR3284## 12 ##STR3285##
[0484] TABLE-US-00147 TABLE 147 ##STR3286## ##STR3287## 1
##STR3288## 2 ##STR3289## 3 ##STR3290## 4 ##STR3291## 5 ##STR3292##
6 ##STR3293## 7 ##STR3294## 8 ##STR3295## 9 ##STR3296## 10
##STR3297## 11 ##STR3298## 12 ##STR3299##
[0485] TABLE-US-00148 TABLE 148 ##STR3300## ##STR3301## 1
##STR3302## 2 ##STR3303## 3 ##STR3304## 4 ##STR3305## 5 ##STR3306##
6 ##STR3307## 7 ##STR3308## 8 ##STR3309## 9 ##STR3310## 10
##STR3311## 11 ##STR3312## 12 ##STR3313##
[0486] TABLE-US-00149 TABLE 149 ##STR3314## ##STR3315## 1
##STR3316## 2 ##STR3317## 3 ##STR3318## 4 ##STR3319## 5 ##STR3320##
6 ##STR3321## 7 ##STR3322## 8 ##STR3323## 9 ##STR3324## 10
##STR3325## 11 ##STR3326## 12 ##STR3327##
[0487] TABLE-US-00150 TABLE 150 ##STR3328## ##STR3329## 1
##STR3330## 2 ##STR3331## 3 ##STR3332## 4 ##STR3333## 5 ##STR3334##
6 ##STR3335## 7 ##STR3336## 8 ##STR3337## 9 ##STR3338## 10
##STR3339## 11 ##STR3340## 12 ##STR3341##
[0488] A contemplated inhibitor compound is used for treating a
host mammal such as a mouse, rat, rabbit, dog, horse, primate such
as a monkey, chimpanzee or human that has a condition associated
with pathological matrix metalloprotease activity.
[0489] Also contemplated is use of a contemplated metalloprotease
inhibitor compound in the treatment of a disease state that can be
affected by the activity of metalloproteases TNF-.alpha.
convertase. Exemplary of such disease states are the acute phase
responses of shock and sepsis, coagulation responses, hemorrhage
and cardiovascular effects, fever and inflammation, anorexia and
cachexia.
[0490] In treating a disease condition associated with pathological
matrix metalloproteinase activity, a contemplated MMP inhibitor
compound can be used in the form of an amine salt derived from an
inorganic or organic acid. Exemplary salts include but are not
limited to the following: acetate, adipate, alginate, citrate,
aspartate, benzoate, benzenesulfonate, bisulfate, butyrate,
camphorate, camphorsulfonate, digluconate, cyclopentanepropionate,
dodecylsulfate, ethanesulfonate, glucoheptanoate, glycerophosphate,
hemisulfate, heptanoate, hexanoate, fumarate, hydrochloride,
hydrobromide, hydroiodide, 2-hydroxy-ethanesulfonate, lactate,
maleate, methanesulfonate, nicotinate, 2-naphthalenesulfonate,
oxalate, palmoate, pectinate, persulfate, 3-phenylpropionate,
picrate, pivalate, propionate, succinate, tartrate, thiocyanate,
tosylate, mesylate and undecanoate.
[0491] Also, a basic nitrogen-containing group can be quaternized
with such agents as lower alkyl halides, such as methyl, ethyl,
propyl, and butyl chloride, bromides, and iodides; dialkyl sulfates
like dimethyl, diethyl, dibuytl, and diamyl sulfates, long chain
halides such as decyl, lauryl, myristyl and stearyl chlorides,
bromides and iodides, aralkyl halides like benzyl and phenethyl
bromides, and others to provide enhanced water-solubility. Water or
oil-soluble or dispersible products are thereby obtained as
desired. The salts are formed by combining the basic compounds with
the desired acid.
[0492] Other compounds useful in this invention that are acids can
also form salts. Examples include salts with alkali metals or
alkaline earth metals, such as sodium, potassium, calcium or
magnesium or with organic bases or basic quaternary ammonium
salts.
[0493] In some cases, the salts can also be used as an aid in the
isolation, purification or resolution of the compounds of this
invention.
[0494] Total daily dose administered to a host mammal in single or
divided doses can be in amounts, for example, for 0.001 to 30 mg/kg
body weight daily and more usually 0.01 to 10 mg. Dosage unit
compositions can contain such amounts or submultiples thereof to
make up the daily dose. A suitable dose can be administered, in
multiple sub-doses per day. Multiple doses per day can also
increase the total daily dose, should this be desired by the person
prescribing the drug.
[0495] The dosage regimen for treating a disease condition with a
compound and/or composition of this invention is selected in
accordance with a variety of factors, including the type, age,
weight, sex, diet and medical condition of the patient, the
severity of the disease, the route of administration,
pharmacological considerations such as the activity, efficacy,
pharmacokinetic and toxicology profiles of the particular compound
employed, whether a drug delivery system is utilized and whether
the compound is administered as part of a drug combination. Thus,
the dosage regimen actually employed can vary widely and therefore
can deviate from the preferred dosage regimen set forth above.
[0496] A compound of the present invention can be formulated as a
pharmaceutical composition. Such a composition can then be
administered orally, parenterally, by inhalation spray, rectally,
or topically in dosage unit formulations containing conventional
nontoxic pharmaceutically acceptable carriers, adjuvants, and
vehicles as desired. Topical administration can also involve the
use of transdermal administration such as transdermal patches or
iontophoresis devices. The term parenteral as used herein includes
subcutaneous injections, intravenous, intramuscular, intrasternal
injection, or infusion techniques. Formulation of drugs is
discussed in, for example, Hoover, John E., Remington's
Pharmaceutical Sciences, Mack Publishing Co., Easton, Pa.; 1975 and
Liberman, H. A. and Lachman, L., Eds., Pharmaceutical Dosage Forms,
Marcel Decker, New York, N.Y., 1980.
[0497] Injectable preparations, for example, sterile injectable
aqueous or oleaginous suspensions can be formulated according to
the known art using suitable dispersing or wetting agents and
suspending agents. The sterile injectable preparation can also be a
sterile injectable solution or suspension in a nontoxic
parenterally acceptable diluent or solvent, for example, as a
solution in 1,3-butanediol. Among the acceptable vehicles and
solvents that can be employed are water, Ringer's solution, and
isotonic sodium chloride solution. In addition, sterile, fixed oils
are conventionally employed as a solvent or suspending medium. For
this purpose any bland fixed oil can be employed including
synthetic mono- or diglycerides. In addition, fatty acids such as
oleic acid find use in the preparation of injectables. Dimethyl
acetamide, surfactants including ionic and non-ionic detergents,
polyethylene glycols can be used. Mixtures of solvents and wetting
agents such as those discussed above are also useful.
[0498] Suppositories for rectal administration of the drug can be
prepared by mixing the drug with a suitable nonirritating excipient
such as cocoa butter, synthetic mono- di- or triglycerides, fatty
acids and polyethylene glycols that are sold at ordinary
temperatures but liquid at the rectal temperature and will
therefore melt in the rectum and release the drug.
[0499] Solid dosage forms for oral administration can include
capsules, tablets, pills, powders, and granules. In such solid
dosage forms, the compounds of this invention are ordinarily
combined with one or more adjuvants appropriate to the indicated
route of administration. If administered per os, a contemplated
aromatic sulfone hydroximate inhibitor compound can be admixed with
lactose, sucrose, starch powder, cellulose esters of alkanoic
acids, cellulose alkyl esters, talc, stearic acid, magnesium
stearate, magnesium oxide, sodium and calcium salts of phosphoric
and sulfuric acids, gelatin, acacia gum, sodium alginate,
polyvinylpyrrolidone, and/or polyvinyl alcohol, and then tableted
or encapsulated for convenient administration. Such capsules or
tablets can contain a controlled-release formulation as can be
provided in a dispersion of active compound in hydroxypropylmethyl
cellulose. In the case of capsules, tablets, and pills, the dosage
forms can also comprise buffering agents such as sodium citrate,
magnesium or calcium carbonate or bicarbonate. Tablets and pills
can additionally be prepared with enteric coatings.
[0500] For therapeutic purposes, formulations for parenteral
administration can be in the form of aqueous or non-aqueous
isotonic sterile injection solutions or suspensions. These
solutions and suspensions can be prepared from soerile powders or
granules having one or more of the carriers or diluents mentioned
for use in the formulations for oral administration. A contemplated
aromatic sulfone hydroximate inhibitor compound can be dissolved in
water, polyethylene glycol, propylene glycol, ethanol, corn oil,
cottonseed oil, peanut oil, sesame oil, benzyl alcohol, sodium
chloride, and/or various buffers. Other adjuvants and modes of
administration are well and widely known in the pharmaceutical
art.
[0501] Liquid dosage forms for oral administration can include
pharmaceutically acceptable emulsions, solutions, suspensions,
syrups, and elixirs containing inert diluents commonly used in the
art, such as water. Such compositions can also comprise adjuvants,
such as wetting agents, emulsifying and suspending agents, and
sweetening, flavoring, and perfuming agents.
[0502] The amount of active ingredient that can be combined with
the carrier materials to produce a single dosage form varies
depending upon the mammalian host treated and the particular mode
of administration.
BEST MODE FOR CARRYING OUT THE INVENTION
[0503] Without further elaboration, it is believed that one skilled
in the art can, using the preceding description, utilize the
present invention to its fullest extent. The following preferred
specific embodiments are, therefore, to be construed as merely
illustrative, and not limiting of the remainder of the disclosure
in any way whatsoever.
EXAMPLE 1
Preparation of N-hydroxy-2-[(4-phenoxyphenyl)sulfonyl]acetamide
[0504] ##STR3342##
[0505] Part A: To a solution of 3-bromopyruvic acid hydrate (1.95
g, 11.7 mmol) cooled to zero degrees Celsius in methanol (50 mL)
was added 4-(phenoxy)benzenethiol (2.35 g, 11.7 mmol). The solution
was stirred for 15 minutes followed by concentration in vacuo. The
residue was partitioned between ethyl acetate and H.sub.2O and the
organic layer was dried over magnesium sulfate. Concentration in
vacuo provided the crude sulfide as a yellow solid that was used
without any additional purification.
[0506] Part B: To a solution of the crude sulfide of part A (1.2 g,
<2.6 mmol) in methanol/H.sub.2O cooled to zero degrees Celsius
was added Oxone.RTM. (3.5 g, 5.72 mmol). The solution was stirred
for 1 hour followed by removal of excess Oxone.RTM. by filtration.
The filtrate was concentrated and the residue was dissolved into
ethyl acetate and washed with saturated NaHCO.sub.3 and saturated
NaCl and dried over magnesium sulfate. After concentration in vacuo
the resulting residue was dissolved into methanol and thionyl
chloride (1.9 mL, 26 mmol) was added. Chromatography (on silica,
ethyl acetate/hexane) provided the sulfone as a solid (350 mg,
44%). MS(CI) MH.sup.+ calculated for C.sub.15H.sub.14O.sub.5S: 307,
found 307.
[0507] Part C: To a solution of the sulfone (350 mg, 1.1 mmol) in
methanol (2 mL) and THF (THF; 2 mL) was added 50 percent aqueous
hydroxylamine (1 mL). The solution was stirred overnight.
Trituration with ethyl acetate provided the title compound as a
white solid (270 mg, 77%). HPLC purity: >97%. MS(CI) MH.sup.+
calculated for C.sub.14H.sub.13NO.sub.5S: 308, found 308.
EXAMPLE 2
Preparation of
N-hydroxy-2-methyl-2-[(4-phenoxyphenyl)sulfonyl]propanamide
[0508] ##STR3343##
[0509] Part A: To a solution of 4-(phenoxy)benzenethiol (3.8 g,
18.8 mmol) in methanol (60 mL) cooled to zero degrees Celsius was
added t-butyl bromoacetate (2.8 mL, 18.8 mmol) and triethylamine
(2.6 mL, 19.0 mmol). The solution was stirred for 30 minutes and
was then concentrated in vacuo. The residue was partitioned between
ethyl acetate and H.sub.2O and the organic layer was washed with
saturated NaCl and dried over magnesium sulfate. Concentration in
vacuo provided the sulfide as an oil. To a solution of the sulfide
in dichloromethane (85 mL) was added m-chloroperbenzoic acid (13.8
g, 43.2 mmol) over 15 minutes. The solution was stirred at ambient
temperature for 2 hours. The reaction was quenched by the addition
of aqueous Na.sub.2SO.sub.3. After 30 minutes the solution was
filtered through Celite.RTM.. The filtrate was washed with 25
percent aqueous hydroxylamine, 1N HCl, and saturated NaCl and dried
over magnesium sulfate. Chromatography (on silica, ethyl
acetate/hexane) provided the sulfone as a white solid (4.0 g,
68%).
[0510] Part B: To a solution of the sulfone of part A (3.2 g, 9.2
mmol) in THF (65 mL) cooled to zero degrees Celsius was added
sodium hydride (730 mg of a 60 percent dispersion in mineral oil,
18.4 mmol). After 10 minutes, methyl iodide (2.28 mL, 36.8 mmol)
was added dropwise and the mixture was stirred for 18 hours at
ambient temperature. The reaction was quenched with H.sub.2O and
concentrated in vacuo. The aqueous residue was diluted with ethyl
acetate and the organic phase was washed with H.sub.2O and dried
over Na.sub.2SO.sub.4. Concentration in vacuo provided the dimethyl
compound as an off-white solid (3.2 g, 92%). HPLC purity: 95%.
[0511] Part C: To a solution of the dimethyl compound of part B
(3.2 g, 8.5 mmol) in anisole (10 mL) was added trifluoroacetic acid
(30 mL) and the solution was stirred for 30 minutes. Concentration
in vacuo followed by trituration (ethyl ether) provided the acid as
a white solid (750 mg, 28%). HPLC purity: 99%. MS(CI) MH.sup.+
calculated for C.sub.16H.sub.16O.sub.5S: 321, found 321.
[0512] Part D: To a solution of the acid of part C (723 mg, 2.26
mmol) in DMF (DMF; 4.5 mL) was added
N-hydroxybenzotriazole.H.sub.2O (HOBT; 366 mg, 2.71 mmol) and
1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC;
476 mg, 2.49 mmol). After the solution was stirred for 1 hour at
ambient temperature 50 percent aqueous hydroxylamine (0.40 mL, 6.8
mmol) was added. After 15 minutes the solution was partitioned
between ethyl acetate and H.sub.2O. The organic layer was washed
with H.sub.2O and saturated NaCl and dried over Na.sub.2SO.sub.4.
Reverse phase chromatography (on silica, acetonitrile/H.sub.2O)
provided the title compound as a white foam (434 mg, 57%). HPLC
purity: 99%. MS(CI) M+Li.sup.+ calculated for
C.sub.16H.sub.17NO.sub.5O: 342, found 342.
EXAMPLE 3
Preparation of 1,1-dimethylethyl ester
4-[(hydroxyamino)carbonyl]-4-[(phenoxyphenyl)-sulfonyl]-1-piperidinecarbo-
xylic acid
[0513] ##STR3344##
[0514] Part A: A solution of 4-(phenoxy)benzenethiol (2.03 g, 10.0
mmol) in DMSO (DMSO; 20 mL) was heated to sixty-five degrees
Celsius for 5 hours. The solution remained at ambient temperature
for 18 hours. The solution was extracted with ethyl acetate and the
combined organic layers were washed with H.sub.2O and saturated
NaCl and dried over magnesium sulfate. Concentration in vacuo
provided the disulfide as a yellow oil (2.3 g, quantitative
yield).
[0515] Part B: To a solution of ethyl isonipecotate (15.7 g, 0.1
mol) in THF (100 mL) was added a solution of di-tert-butyl
dicarbonate (21.8 g, 0.1 mol) in THF (5 mL) dropwise over 20
minutes. The solution was stirred overnight at ambient temperature
and concentrated in vacuo to yield a light oil. The oil was
filtered through silica gel (7:3 ethyl acetate/hexanes) and
concentrated in vacuo to give the BOC-piperidine compound (26.2 g,
quantitative yield) as a clear, colorless oil.
[0516] Part C: To a solution of diisopropylamine (2.8 mL, 20 mmoL)
in THF (30 mL), cooled to minus seventy-eight degrees Celsius, was
added n-butyl lithium (12.5 mL, 20 mmol) dropwise. After 15
minutes, the BOC-piperidine compound of part B (2.6 g, 10 mmol) in
THF (10 mL) was added dropwise. After 1.5 hours the solution was
cooled to minus sixty degrees Celsius and the disulfide of part A
(2.0 g, 10 mmol) in THF (7 mL). The solution was stirred at ambient
temperature for 2 hours. The solution was diluted with H.sub.2O and
extracted with ethyl acetate. The organic layer was washed with
H.sub.2O and saturated NaCl and dried over magnesium sulfate.
Chromatography (on silica, ethyl acetate/hexane) provided the
sulfide as an oil (1.8 g, 40%).
[0517] Part D: To a solution of the sulfide of part C (1.8 g, 3.95
mmol) in dichloromethane (75 mL) cooled to zero degrees Celsius,
was added m-chloroperbenzoic acid (1.7 g, 7.9 mmol). The solution
was stirred for 1.5 hours followed by dilution with H.sub.2O and
extraction with dichloromethane. The organic layer was washed with
10 percent Na.sub.2SO.sub.4, H.sub.2O, and saturated NaCl and dried
over magnesium sulfate. Chromatography (on silica, ethyl
acetate/hexane) provided the sulfone as a solid (1.15 g, 59%).
[0518] Part E: To a solution of the sulfone of part D (800 mg, 1.63
mmol) in THF (9 mL) and ethanol (9 mL) was added NaOH (654 mg, 16.3
mmol) in H.sub.2O (3 mL). The solution was heated at sixty-five
degrees Celsius for 18 hours. The solution was concentrated in
vacuo and the residue was dissolved in H.sub.2O. Following
acidification with 2N HCl to pH 4, the solution was extracted with
ethyl acetate and the organic layer was washed with saturated NaCl
and dried over magnesium sulfate. Concentration in vacuo provided
the acid as a white foam (790 mg, quantitative yield). Analytical
calculated for C.sub.23H.sub.27NO.sub.7S: C, 59.86; H, 5.90; N,
3.04; S, 6.95. Found: C, 59.49; H, 6.37; N, 2.81; S, 6.59.
[0519] Part F: To a solution of the acid of part G (730 mg, 1.58
mmol) in DMF (9 mL) was added HOBT (256 mg, 1.90 mmol) followed by
EDC (424 mg, 2.21 mmol), 4-methylmorpholine (0.521 mL, 4.7 mmol)
and 50 percent aqueous hydroxylamine (1.04 mL, 15.8 mmol). The
solution was stirred for 20 hours and additional
N-hydroxybenzotriazole.H.sub.2O (256 mg), EDC (424 mg) and 50
percent aqueous hydroxylamine (1.04 mL) were added. After an
additional 24 hours of stirring the solution was diluted with
H.sub.2O and extracted with ethyl acetate and the organic layer was
washed with saturated NaCl and dried over magnesium sulfate.
Reverse phase chromatography (on silica, acetonitrile/H.sub.2O)
provided the title compound as a white solid (460 mg, 61%). HPLC
purity: >99%. Analytical calculated for
C.sub.23H.sub.28N.sub.2O.sub.7S: C, 57.97; H, 5.92; N, 5.88; S,
6.73. Found: C, 57.95; H, 6.02; N, 5.81; S, 6.85.
EXAMPLE 4
Preparation of
N-hydroxy-4-[(4-phenoxyphenyl)sulfonyl]-4-piperidinecarboxamide,
monohydrochloride
[0520] ##STR3345##
[0521] Part A: A solution of 4-(phenoxy)benzenethiol (2.03 g, 10.0
mmol) in DMSO (20 mL) was heated to sixty-five degrees Celsius for
5 hours. The solution remained at ambient temperature for 18 hours.
The solution was extracted with ethyl acetate and the combined
organic layers were washed with H.sub.2O and saturated NaCl and
dried over magnesium sulfate. Concentration in vacuo provided the
disulfide as a yellow oil (2.3 g, quantitative yield).
[0522] Part B: To a solution of ethyl isonipecotate (15.7 g, 0.1
mol) in THF (100 mL) was added a solution of di-tert-butyl
dicarbonate (21.8 g, 0.1 mol) in THF (5 mL) dropwise over 20
minutes. The solution was stirred overnight at ambient temperature
and concentrated in vacuo to yield a light oil. The oil was
filtered through silica gel (on silica, ethyl acetate/hexane) and
concentrated in vacuo to give the BOC-piperidine compound as a
clear, colorless oil (26.2 g, quantitative yield).
[0523] Part C: To a solution of diisopropylamine (2.8 mL, 20 mmoL)
in THF (30 mL), cooled to minus seventy-eight degrees Celsius, was
added n-butyl lithium (12.5 mL, 20 mmol) dropwise. After 15
minutes, the BOC-piperidine compound of part B (2.6 g, 10 mmol) in
THF (10 mL) was added dropwise. After 1.5 hours the solution was
cooled to minus 60 degrees Celsius and the disulfide of part A (2.0
g, 10 mmol) in THF (7 mL) was added. The solution was stirred at
ambient temperature for 2 hours. The solution was diluted with
H.sub.2O and extracted with ethyl acetate. The organic layer was
washed with H.sub.2O and saturated NaCl and dried over magnesium
sulfate. Chromatography (on silica, ethyl acetate/hexane) provided
the sulfide as an oil (1.8 g, 40%).
[0524] Part D: To a solution of the sulfide of part C (1.8 g, 3.95
mmol) in dichloromethane (75 mL) cooled to zero degrees C., was
added m-chloroperbenzoic acid (1.7 g, 7.9 mmol). The solution was
stirred for 1.5 hours followed by dilution with H.sub.2O and
extraction with dichloromethane. The organic layer was washed with
10 percent Na.sub.2SO.sub.31H.sub.2O, and saturated NaCl and dried
over magnesium sulfate. Chromatography (on silica, ethyl
acetate/hexane) provided the sulfone as a solid (1.15 g, 59%).
[0525] Part E: To a solution of the sulfone of part D (800 mg, 1.63
mmol) in THF (9 mL) and ethanol (9 mL) was added NaOH (654 mg, 16.3
mmol) in H.sub.2O (3 mL). The solution was heated at sixty-five
degrees Celsius for 18 hours. The solution was concentrated in
vacuo and the residue was dissolved in H.sub.2O. Following
acidification with 2N HCl to pH 4, the solution was extracted with
ethyl acetate and the organic layer was washed with saturated NaCl
and dried over magnesium sulfate. Concentration in vacuo provided
the acid as a white foam (790 mg, quantitative yield). analytical
calculated for C.sub.23H.sub.27NO.sub.7S: C, 59.86; H, 5.90; N,
3.04; S, 6.95. Found: C, 59.49; H, 6.37; N, 2.81; S, 6.59.
[0526] Part F: To a solution of the acid of part G (730 mg, 1.58
mmol) in DMF (9 mL) was added HOBT (256 mg, 1.90 mmol) followed by
EDC (424 mg, 2.21 mmol), 4-methylmorpholine (0.521 mL, 4.7 mmol)
and 50 percent aqueous hydroxylamine (1.04 mL, 15.8 mmol). The
solution was stirred for 20 hours and additional HOBT (256 mg), EDC
(424 mg) and 50 percent aqueous hydroxylamine (1.04 mL) were added.
After an additional 24 hours of stirring the solution was diluted
with H.sub.2O, and extracted with ethyl acetate. The organic layer
was washed with saturated NaCl and dried over magnesium sulfate.
Reverse phase HPLC (acetonitrile/H.sub.2O) provided the hydroxamate
as a white solid (460 mg, 61%). HPLC purity: >99%. analytical
calculated for C.sub.23H.sub.28N.sub.2O.sub.7S: C, 57.97; H, 5.92;
N, 5.88; S, 6.73. Found: C, 57.95; H, 6.02; N, 5.81; S, 6.85.
[0527] Part G: Into a solution of the hydroxamate of part F (385
mg, 0.808 mmol) in ethyl acetate (25 mL), cooled to zero degrees
Celsius, was bubbled HCl gas for 5 minutes. After standing for 30
minutes, the solution was concentrated in vacuo. Trituration with
ethyl ether provided the title compound as a white solid (330 mg,
quantitative yield). MS(CI) MH.sup.+ calculated for
C.sub.18H.sub.20N.sub.2O.sub.5S: 377, found 377. HRMS calculated
for C.sub.18H.sub.20N.sub.2O.sub.5S: 377.1171, found 377.1170.
analytical calculated for
C.sub.18H.sub.20N.sub.2O.sub.5S.1.1HCl.0.25H.sub.2O: C, 51.35; H,
5.17; N, 6.65; S, 7.62; Cl, 9.26. Found: C, 51.58; H, 5.09; N,
6.55; S, 8.02; Cl, 9.09.
EXAMPLE 5
Preparation of (E)
N-hydroxy-2-[(4-phenoxyphenyl)sulfonyl]-3-phenyl-2-propenamide
[0528] ##STR3346##
[0529] Part A: To a solution of 4-(phenoxy)benzenethiol (5.00 g,
24.7 mmol) in methanol (100 mL) cooled to zero degrees Celsius was
added t-butylbromoacetate (3.99 mL, 24.7 mmol). Following the
addition of triethylamine (3.60 mL, 25.8 mmol) the solution was
stirred for 40 minutes The solution was concentrated in vacuo and
the resulting residue was dissolved in ethyl acetate and washed
with H.sub.2O and saturated NaCl and dried over Na.sub.2SO.sub.4.
Concentration in vacuo provided the sulfide as an oil (7.9 g,
quantitative yield).
[0530] Part B: To a solution of the sulfide of part A (7.9 g, 24.7
mmol) in methanol (180 mL) and H.sub.2O (20 mL) was added
Oxone.RTM. (38.4 g, 62.5 mmol) and the mixture was stirred for 22
hours. The mixture was acidified to pH 4 with 2.5N NaOH and
decanted to remove insoluble salts. The decantate was concentrated
to one-half volume and partitioned between ethyl acetate and
H.sub.2O. The organic layer was washed with H.sub.2O and saturated
NaCl and dried over Na.sub.2SO.sub.4. Chromatography (on silica,
ethyl acetate/hexane) provided the sulfone as a yellow solid (5.79
g, 67%).
[0531] Part C: To a solution of the sulfone of part B (2.5064 g,
7.20 mmol) and benzaldehyde (0.748 mL, 7.36 mmol) in benzene (20
mL) were added acetic acid (0.15 mL) and piperidine (0.05 mL). The
solution was heated to reflux for 2 hours and the condensate was
collected via a Dean-Stark trap. After an additional 1.5 hours of
reflux, the solution was returned to ambient temperature and
stirred for 18 hours. The solution was diluted with ethyl acetate
and washed with H.sub.2O and saturated NaCl and dried over
Na.sub.2SO.sub.4. Chromatography (on silica, ethyl acetate/hexane)
followed by trituration (ethyl ether/hexane) provided the
unsaturated sulfone as a white solid (1.97 g, 73%). HPLC purity:
>98%.
[0532] Part D: Into a solution of the unsaturated sulfone of part C
(0.5053 g, 1.16 mmol) was bubbled HCl gas for 1 hour. The solution
was concentrated in vacuo and the residue was dissolved into ethyl
acetate and washed with H.sub.2O and dried over Na.sub.2SO.sub.4.
Concentration in vacuo provided the acid as an oil (0.41 g,
93%).
[0533] Part E: To a solution of the acid of part D (461 mg, 1.21
mmol) was added thionyl chloride (3.0 mL) and the solution was
heated to one hundred degrees Celsius for 1 hour. Concentration in
vacuo provided the acid chloride as an amber oil (380 mg, 79%).
[0534] Part F: To a solution of the acid chloride of part E (380
mg, 0.95 mmol) in THF (20 mL) was added 50 percent aqueous
hydroxylamine (1.7 mL, 9.5 mmol). The solution was stirred at zero
degrees Celsius for 1 hour. The solution was diluted with ethyl
acetate, washed with H.sub.2O and saturated NaCl, and dried over
Na.sub.2SO.sub.4. Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O) followed by trituration (ethyl ether/hexane)
provided the title compound as a white solid (131 mg, 35%). HPLC
purity: >97%.
EXAMPLE 6
Preparation of
N-hydroxy-4-[(4-phenoxyphenyl)sulfonyl]-1-(2-propynyl)-4-piperidinecarbox-
amide, monohydrochloride
[0535] ##STR3347##
[0536] Part A: A solution of 4-(phenoxy)benzenethiol (2.03 g, 10.0
mmol) in DMSO (20 mL) was heated to 65 degrees Celsius for 5 hours.
The solution remained at ambient temperature for 18 hours. The
solution was extracted with ethyl acetate and the combined organic
layers were washed with H.sub.2O and saturated NaCl, and dried over
magnesium sulfate. Concentration in vacuo provided the disulfide as
a yellow oil (2.3 g, quantitative yield).
[0537] Part B: To a solution of ethyl isonipecotate (15.7 g, 0.1
mol) in THF (100 mL) was added a solution of di-tert-butyl
dicarbonate (21.8 g, 0.1 mol) in THF (5 mL) dropwise over 20
minutes. The solution was stirred overnight at ambient temperature
and concentrated in vacuo to yield a light oil. The oil was
filtered through silica gel (ethyl acetate/hexane) and concentrated
in vacuo to give the BOC-piperidine compound as a clear, colorless
oil (26.2 g, quantitative yield).
[0538] Part C: To a solution of diisopropylamine (2.8 mL, 20 mmoL)
in THF (30 mL), cooled to minus seventy-eight degrees Celsius, was
added n-butyl lithium (12.5 mL, 20 mmol) dropwise. After 15
minutes, the BOC-piperidine compound of part B (2.6 g, 10 mmol) in
THF (10 mL) was added dropwise. After 1.5 hours the solution was
cooled to minus sixty degrees Celsius and the disulfide of part A
(2.0 g, 10 mmol) in THF (7 mL) was added. The solution was stirred
at ambient temperature for 2 hours. The solution was diluted with
H.sub.2O and extracted with ethyl acetate. The organic layer was
washed with H.sub.2O and saturated NaCl and dried over magnesium
sulfate. Chromatography (on silica, ethyl acetate/hexane) provided
the sulfide as an oil (1.8 g, 40%).
[0539] Part D: To a solution of the sulfide of part C (1.8 g, 3.95
mmol) in dichloromethane (75 mL) cooled to zero degrees Celsius,
was added m-chloroperbenzoic acid (1.7 g, 7.9 mmol). The solution
was stirred for 1.5 hours followed by dilution with H.sub.2O and
extraction with dichloromethane. The organic layer was washed with
10 percent Na.sub.2SO.sub.4, H.sub.2O, and saturated NaCl and dried
over magnesium sulfate. Chromatography (on silica, ethyl
acetate/hexane) provided the sulfone as a solid (1.15 g, 59%).
[0540] Part E: Into a solution of the sulfone of part D (3.56 g,
7.0 mmol) in ethyl acetate (100 mL) cooled to zero degrees Celsius
was bubbled HCl gas for 5 minutes. Concentration in vacuo followed
by trituration with ethyl ether provided the amine hydrochloride
salt as a white solid (3.5 g, quantitative yield). MS (CI) MH.sup.+
calculated for C.sub.20H.sub.23NO.sub.5S: 390, found 390.
[0541] Part F: To a solution of the amine hydrochloride salt of
part E (2.6 g, 6 mmol) and K.sub.2CO.sub.3 (1.66 g, 12 mmol) in DMF
(50 mL) was added propargyl bromide (892 mg, 6 mmol) and the
solution was stirred at ambient temperature for 4 hours. The
solution was diluted with H.sub.2O and extracted with ethyl
acetate. The combined organic layers were washed with saturated
NaCl and dried over magnesium sulfate. Chromatography (on silica,
ethyl acetate/hexane) provided the propargyl amine as a white solid
(2.15 g, 82%).
[0542] Part G: To a solution of the propargyl amine of part F (2.15
g, 5 mmol) in THF (30 mL) and ethanol (30 mL) was added NaOH (2.0
g, 50 mmol) and the solution was heated at 65 degrees Celsius for
48 hours. The solution was concentrated in vacuo and the aqueous
residue was acidified to a pH value of 5. Vacuum filtration of the
resulting precipitate provided the acid as a white solid (2.04 g,
quantitative yield).
[0543] Part H: To a solution of the acid of part G (559 mg, 1.4
mmol) in dichloromethane (5 mL) was added triethylamine (0.585 mL,
4.2 mmol) and 50 percent aqueous hydroxylamine (0.925 mL, 14.0
mmol) followed by bromotris(pyrrolidino)phosphonium
hexafluourphosphate (PyBroP.RTM.; 718 mg, 1.54 mmol). The solution
was stirred at ambient temperature for 4 hours. The solution was
diluted with H.sub.2O and extracted with dichloromethane. The
organic layer was washed with saturated NaCl and dried over
magnesium sulfate. Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O) provided the hydroxamate as a white solid
(140 mg, 25%). Analytical calculation for
C.sub.21H.sub.22N.sub.2O.sub.5S: C, 60.85; H, 5.37; N, 6.76; S,
7.74. Found: C, 60.47; H, 5.35; N, 6.61; S, 7.46.
[0544] Part I: To a solution of the hydroxamate of part H (121 mg,
0.292 mmol) in methanol (2 mL) cooled to zero degrees Celsius was
added acetyl chloride (0.228 mL, 0.321 mmol) in methanol (1 mL).
After stirring at ambient temperature for 30 minutes the solution
was concentrated under a stream of N.sub.2. Trituration with ethyl
ether provided the title compound as a white solid (107 mg, 81%).
Analytical calculation for
C.sub.21H.sub.22N.sub.2O.sub.5S.HCl.0.3H.sub.2O: C, 55.27; H, 5.21;
N, 6.14. Found: C, 54.90; H, 5.37; N, 6.07.
EXAMPLE 7
Preparation of
N-[4-[[2-(hydroxyamino)-2-oxoethyl]sulfonyl]phenyl]benzamide
[0545] ##STR3348##
[0546] Part A: To a suspension of 2-(4-aminophenylthio)acetic acid
(20.00 g, 0.109 mmol) in methanol (100 mL) cooled to zero degrees
Celsius was added thionyl chloride (24.0 mL, 0.327 mmol) dropwise.
Additional methanol was added (100 mL) and the suspension was
heated to reflux for 2 hours. The solution was concentrated in
vacuo and the residue was dissolved into H.sub.2O and neutralized
with saturated NaHCO.sub.3. The aqueous layer was extracted with
ethyl acetate and the combined organic layers were washed with
saturated NaCl and dried over Na.sub.2SO.sub.4. Concentration in
vacuo provided the methyl ester as a dark purple oil (22.75 g,
quantitative yield). HPLC purity: 99%.
[0547] Part B: To a solution of the methyl ester of part A (5.00 g,
25.35 mmol) and triethylamine (7.07 mL, 50.70 mmol) in
dichloromethane (50 mL) was added benzoyl chloride (3.24 mL, 27.89
mmol) and the solution was stirred at ambient temperature for 2
hours. The solution was concentrated in vacuo and the residue was
partitioned between ethyl acetate, THF and H.sub.2O. The organic
layer was washed with H.sub.2O and saturated NaCl and dried over
Na.sub.2SO.sub.4. Concentration in vacuo provided the benzamide as
a purple solid (7.06 g, 92%). HPLC purity: 98%. MS(CI) M+Li.sup.+
calculated for C.sub.16H.sub.15NO.sub.3S: 308, found 308.
[0548] Part C: To a solution of the benzamide of part B (4.00 g,
13.27 mmol) in THF (100 mL) and H.sub.2O (10 mL) cooled to zero
degrees Celsius was added Oxone.RTM. (potassium monopersulfate;
24.47 g, 39.81 mmol). The slurry was stirred overnight (about
eighteen hours) at ambient temperature. The mixture was filtered to
remove excess Oxone.RTM. and the filtrate was concentrated in
vacuo. The residue was dissolved into ethyl acetate and washed with
H.sub.2 0 and saturated NaCl, and then dried over Na.sub.2SO.sub.4.
Concentration in vacuo provided the sulfone as a pink solid (4.11
g, 93%). HPLC purity: 98%. MS(CI) M+Li.sup.+ calculated for
C.sub.16H.sub.15NO.sub.5S: 340, found 340.
[0549] Part D: To a solution of the sulfone of part C (400 mg, 1.2
mmol) in THF (9 mL) was added 50 percent aqueous hydroxylamine (5.0
mL). The solution was stirred for 8 hours and was concentrated in
vacuo. Trituration with hot ethyl ether provided the title compound
as an off-white solid (348 mg, 78%). HPLC purity: 97%. MS(CI)
MH.sup.+ calculated for C.sub.17H.sub.14N.sub.2O.sub.5S: 335, found
335.
EXAMPLE 8
Preparation of N-[4-[[2-(hydroxyamino)-2-oxo-1-(piperidin-4-yl)
ethyl]sulfonyl]-phenyl]-benzamide, monohydrochloride
[0550] ##STR3349##
[0551] Part A: To a solution of diethanolamine (22.16 g, 0.211 mol)
in THF (100 mL) cooled to zero degrees Celsius was added di-t-butyl
dicarbonate (46.0 g, 0.211 mol) and the solution was stirred at
ambient temperature for 20 hours. The solution was concentrated in
vacuo and the resulting residue was filtered through a silica pad
(5 percent methanol/95 percent dichloromethane) to provide the diol
as a clear oil (45.06 g, quantitative yield). MS(CI) MH.sup.+
calculated for C.sub.9H.sub.19O.sub.4S: 206, found 206.
[0552] Part B: To a suspension of 2-(4-aminophenylthio)acetic acid
(20.00 g, 0.109 mmol) in methanol (100 mL) cooled to zero degrees
Celsius thionyl chloride (24.0 mL, 0.327 mmol) was added dropwise.
After additional methanol was added (100 mL), the suspension was
heated to reflux for 2 hours. The composition was concentrated in
vacuo, the residue was dissolved in H.sub.2O and neutralized with
saturated NaHCO.sub.3. The aqueous layer was extracted with ethyl
acetate and the combined organic layers were washed with saturated
NaCl and dried over Na.sub.2SO.sub.4. Concentration in vacuo
provided the methyl ester as a dark purple oil (22.75 g,
quantitative yield). HPLC purity: 99%.
[0553] Part C: To a solution of the methyl ester of part B (5.00 g,
25.35 mmol) and triethylamine (7.07 mL, 50.70 mmol) in
dichloromethane (50 mL) was added benzoyl chloride (3.24 mL, 27.89
mmol) and the solution was stirred at ambient temperature for 2
hours. The solution was concentrated in vacuo and the residue was
partitioned between ethyl acetate, THF and H.sub.2O. The organic
layer was washed with H.sub.2O and saturated NaCl and dried over
Na.sub.2SO.sub.4. Concentration in vacuo provided the benzamide as
a purple solid (7.06 g, 92%). HPLC purity: 98%.
[0554] Part D: To a solution of the benzamide of part C (4.00 g,
13.27 mmol) in THF (100 mL) and H.sub.2O (10 mL) cooled to zero
degrees Celsius was added Oxone.RTM. (24.47 g, 39.81 mmol). The
slurry was stirred overnight (about eighteen hours) at ambient
temperature. The mixture was filtered to remove excess Oxone.RTM.
and the filtrate was concentrated in vacuo. The residue was
dissolved into ethyl acetate and washed with H.sub.2O and saturated
NaCl and dried over Na.sub.2SO.sub.4. Concentration in vacuo
provided the sulfone as a pink solid (4.11 g, 93%). HPLC purity:
98%.
[0555] Part E: To a solution of the diol of part A (1.03 g, 5.00
mmol) and the methyl ester of part D (2.00 g, 6.00 mmol) in THF
(100 mL) was added the 1,1'-(azodicarbonyl)dipiperidine (5.05 g,
20.00 mmol). To this slurry was added trimethyl phosphine (20.00 mL
of a 1.0M solution in THF, 20.00 mmol). The mixture stirred for 1
hour at ambient temperature and then was heated at 40 degrees
Celsius for 18 hours. After the slurry returned to ambient
temperature, ethyl ether was added and the insoluble solids were
removed by filtration. The filtrate was concentrated in vacuo and
the resulting residue was dissolved into ethyl acetate, washed with
H.sub.2O and saturated NaCl, and then dried over Na.sub.2SO.sub.4.
Chromatography (on silica, ethyl acetate/hexane) provided the
piperidine compound as a yellow solid (600 mg, 24%). MS(CI)
MH.sup.+ calculated for C.sub.25H.sub.30N.sub.2O.sub.7S: 503, found
503.
[0556] Part F: To a solution of the piperidine compound of part E
(950 mg, 1.89 mmol) in THF (10 mL) was added potassium silanolate
(970 mg, 7.56 mmol) and the solution was stirred at ambient
temperature for 72 hours. The solution was diluted with H.sub.2O,
acidified to pH 2 with 1M HCl, and extracted with ethyl acetate.
The combined organic layers were washed with saturated NaCl and
dried over Na.sub.2SO.sub.4. Concentration in vacuo provided the
acid as a yellow solid (772 mg, 84%).
[0557] Part G: To a solution of the acid of part F (772 mg, 1.48
mmol) in DMF (9 mL) was added HOBT (240 mg, 1.77 mmol),
4-methylmorpholine (0.488 mL, 4.44 mmol), O-tetrahydropyranyl
hydroxyamine (538 mg, 4.54 mmol) and EDC (397 mg, 2.07 mmol). The
solution stirred at ambient temperature for 2 hours. Following
concentration in vacuo the residue was partitioned between ethyl
acetate and H.sub.2O. The organic layer was washed with saturated
NaCl and dried over Na.sub.2SO.sub.4. Chromatography (on silica,
ethyl acetate/hexane) provided the protected hydroxylamine as a
white solid (608 mg, 70%). HPLC purity; >99%).
[0558] Part H: To a solution of the protected hydroxylamine of part
G (596 g, 1.01 mmol) in dioxane (3 mL) and methanol (1 mL) was
added 4M HCl in dioxane (2.50 mL, 10.14 mmol) and the solution
stirred for 50 minutes at ambient temperature. Trituration with
ethyl ether provided the title compound as a white solid (433 mg,
98%). HPLC purity: 98%. MS(CI) MH.sup.+ calculated for
C.sub.19H.sub.21N.sub.3O.sub.5S: 404, found 404.
EXAMPLE 9
Preparation of
N-hydroxy-4-([4-(phenylthio)phenyl]sulfonyl]-1-(2-propynyl)-4-piperidinec-
arboxamide, monohydrochloride
[0559] ##STR3350##
[0560] Part A: To a solution of ethyl isonipecotate (15.7 g, 0.1
mol) in THF (100 my) was added a solution of di-tert-butyl
dicarbonate (21.8 g, 0.1 mol) in THF (5 mL) dropwise over 20
minutes. The solution was stirred overnight (about eighteen hours)
at ambient temperature and concentrated in vacuo to yield a light
oil. The oil was filtered through silica gel (ethyl
acetate/hexanes) and concentrated in vacuo to give the
BOC-piperidine compound as a clear, colorless oil (26.2 g,
quantitative yield).
[0561] Part B: A solution of 4-fluorothiophenol (50.29 g, 390 mmol)
in DMSO (500 mL) was heated to 65 degrees Celsius for 6 hours. The
reaction was quenched into wet ice and the resulting solid was
collected by vacuum filtration to provide the disulfide as a white
solid (34.4 g, 68.9%).
[0562] Part C: To a solution of the BOC-piperdine compound of part
A (16 g, 62 mmol) in THF (300 mL) cooled to minus 50 degrees
Celsius was added lithium diisopropylamide (41.33 mL, 74 mmol) and
the solution was stirred for 1.5 hours at zero degrees Celsius. To
this solution was added the disulfide of part B (15.77 g, 62 mmol),
and the resulting solution was stirred at ambient temperature for
20 hours. The reaction was quenched with the addition of H.sub.2O
and the solution was concentrated in vacuo. The aqueous residue was
extracted with ethyl acetate and the organic layer was washed with
0.5N KOH, H.sub.2O, and saturated NaCl. Chromatography (on silica,
hexane/ethyl acetate) provided the sulfide as an oil (18.0 g,
75%).
[0563] Part D: To a solution of the sulfide of part C (16.5 g, 43
mmol) in dichloromethane (500 mL) cooled to zero degrees Celsius
was added 3-chloroperbenzoic acid (18.0 g, 86 mmol) and the
solution was stirred for 20 hours. The solution was diluted with
H.sub.2O and extracted with dichloromethane. The organic layer was
washed with 10 percent Na.sub.2SO.sub.3, H.sub.2O, and saturated
NaCl and dried over magnesium sulfate. Chromatography (on silica,
ethyl acetate/hexane) provided the sulfone as a solid (10.7 g,
60%).
[0564] Part E: Into a solution of the sulfone of part D (10 g, 24.0
mmol) in ethyl acetate (250 mL) was bubbled HCl gas for 10 minutes
followed by stirring at ambient temperature for 4 hours.
Concentration in vacuo provided the amine hydrochloride salt as a
white solid (7.27 g, 86%).
[0565] Part F: To a solution of the amine hydrochloride salt of
part E (5.98 g, 17.0 mmol) in DMF (120 mL) was added potassium
carbonate (4.7 g, 34.0 mmol) followed by propargyl bromide (2.02 g,
17.0 mmol) and the solution was stirred for 4 hours at ambient
temperature. The solution was partitioned between ethyl acetate and
H.sub.2O, and the organic layer was washed with H.sub.2O and
saturated NaCl and dried over magnesium sulfate. Chromatography (on
silica, ethyl acetate/hexane) provided the propargyl amine as a
yellow oil (5.2 g, 86%).
[0566] Part G: To a solution of the propargyl amine of part F in
DMF (15 mL) was added thiophenol (0.80 mL, 7.78 mmol) and
CsCO.sub.3 (2.79 g, 8.56 mmol) and the solution was heated to 70
degrees Celsius for 6 hours. The solution was partitioned between
ethyl ether and H.sub.2O. The organic layer was washed with
H.sub.2O and saturated NaCl, and dried over magnesium sulfate.
Chromatography (on silica, ethyl acetate/hexane) provided the
S-phenoxyphenyl compound as an oil (1.95 g, 56%).
[0567] Part H: To a solution of the S-phenoxyphenyl of part G (1.81
g, 4.06 mmol) in ethanol (21 mL) and H.sub.2O (3.5 mL) was added
KOH (1.37 g, 24.5 mmol) and the solution was heated to 105 degrees
Celsius for 4.5 hours. The solution was acidified to a pH value of
1 with concentrated HCl solution and then concentrated to provide
the acid as a yellow residue that was used without additional
purification (1.82 g).
[0568] Part I: To a solution of the acid of part H (1.82 g, 4.06
mmol) in acetonitrile (20 mL) was added
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (723 mg, 6.17 mmol) and
triethylamine (0.67 mL, 4.86 mmol). To this stirring solution was
added EDC (1.18 g, 6.17 mmol) and the solution was stirred for 18
hours. The solution was partitioned between H.sub.2O and ethyl
acetate. The organic layer was washed with H.sub.2O, saturated
NaHCO.sub.3 and saturated NaCl and dried over magnesium sulfate.
Chromatography (on silica, ethyl acetate/hexane) provided the
protected hydroxamate as a white solid (1.32 g, 63%).
[0569] Part J: To a solution of the protected hydroxamate of part I
(9.65 g, 18.7 mmol) in methanol (148 mL) cooled to zero degrees
Celsius was added acetyl chloride (4.0 mL, 56.2 mmol), and the
solution was stirred for 45 minutes at ambient temperature.
Concentration in vacuo followed by trituration with ethyl ether
provided the title compound as a white solid (8.10 g, 94%). MS(CI)
MH.sup.+ calculated for C.sub.21H.sub.22N.sub.2O.sub.4S.sub.2: 431,
found 431.
EXAMPLE 10
Preparation of
4-[[4-(1,3-benzodioxol-5-yloxy)phenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)--
4-piperidinecarboxamide, monohydrochloride
[0570] ##STR3351##
[0571] Part A: To a solution of the propargyl amine of Example 9,
part F (7.0 g, 19.8 mmol) in DMF (30 mL) were added sesamol (5.52
g, 40 mmol) and potassium carbonate (5.52 g, 40 mmol), and the
solution was heated to 85 degrees Celsius for 48 hours. The
solution was partitioned between ethyl acetate and H.sub.2O. The
organic layer was dried over magnesium sulfate. Chromatography (on
silica, ethyl acetate/hexane) provided the sulfide as an oil (9.38
g, quantitative yield).
[0572] Part B: To a solution of the sulfide of part A (2.72 g, 5.92
mmol) in ethanol (30 mL) and H.sub.2O (5 mL) was added potassium
hydroxide (2.0 g, 36 mmol) and the solution was heated to reflux
for 4 hours. The solution was acidified to pH=3 with concentrated
HCl. The solution was concentrated in vacuo and the residue was
dissolved in acetonitrile (30 mL). To this solution was added
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (1.05 g, 9.0 mmol),
triethylamine (1 mL) and EDC (1.72 g, 9.0 mmol) and the solution
was stirred at ambient temperature for 18 hours. The solution was
concentrated in vacuo and diluted with saturated NaHCO.sub.3 and
extracted with ethyl acetate. The organic layer was dried over
magnesium sulfate. Chromatography (on silica, ethyl acetate/hexane)
provided the protected hydroxamate as an oil (2.86 g, 93%).
[0573] Part C: To a solution of the protected hydroxamate of part B
(2.86 g, 5.27 mmol) in methanol (40 mL) was added acetyl chloride
(1.13 mL, 15.8 mmol) and the solution was stirred for 3 hours. The
solution was concentrated in vacuo. Reverse phase chromatography
(on silica, acetonitrile/H.sub.2O(HCl)) provided the title compound
as a white solid (2.2 g, 84%). MS(CI) MH.sup.+ calculated for
C.sub.22H.sub.22N.sub.2O.sub.7S: 459, found 459.
EXAMPLE 11
Preparation of
Tetrahydro-N-hydroxy-4-[[4-(4-phenyl-1-piperidinyl)phenyl]sulfonyl]-2H-py-
ran-4-carboxamide, monohydrochloride
[0574] ##STR3352##
[0575] Part A: To a solution of Na (8.97 g, 390 mmol) in methanol
(1 L) at zero degrees Celsius were added 4-fluorothiophenol (50 g,
390 mmol) and methyl chloroacetate (34.2 mL, 390 mmol), and the
solution was stirred for 4 hours at ambient temperature. The
solution was filtered to remove salts and the filtrate was
concentrated in vacuo to provide the sulfide as a colorless oil
(75.85 g, 97%).
[0576] Part B: To a solution of the sulfide of part A (75.85 g, 380
mmol) in methanol (1 L) and H.sub.2O (100 mL) was added Oxone.RTM.
(720 g, 1.17 mol) and the solution was stirred for 2 hours. The
reaction mixture was filtered to remove the excess salts and the
filtrate was concentrated in vacuo. The residue was dissolved into
ethyl acetate and washed with H.sub.2O, saturated NaHCO.sub.3 and
saturated NaCl, and then dried over magnesium sulfate.
Concentration in vacuo provide the sulfone as white solid (82.74 g,
94%).
[0577] Part C: To a solution of the sulfone of part B (28.5 g, 123
mmol) in N,N-dimethylacetamide (200 mL) were added potassium
carbonate (37.3 g, 270 mmol), bis-(2-bromoethyl)ether (19.3 mL, 147
mmol), 4-dimethylaminopyridine (750 mg, 6 mmol) and
tetrabutylammonium bromide (1.98 g, 6 mmol), and the solution was
stirred at ambient temperature for 72 hours. The solution was
poured into 1N HCl (300 mL) and the resulting precipitate was
collected by vacuum filtration. Recrystallization (ethyl
acetate/hexane) provided the tetrahydropyran compound as a beige
solid (28.74 g, 77%).
[0578] Part D: To a solution of the tetrahydropyran compound of
part C (1.21 g, 4.0 mmol) in DMSO (10 mL) were added
Cs.sub.2CO.sub.3 (3.26 g, 10.0 mmol) and 4-phenylpiperidine (640
mg, 4.0 mmol), and the solution was heated to 90 degrees Celsius
for 2 hours. The solution was diluted with H.sub.2O and extracted
with ethyl acetate. The organic layer was washed with 5 percent
aqueous KHSO.sub.4, saturated NaHCO.sub.3 and saturated NaCl and
dried over magnesium sulfate. Concentration in vacuo provided the
amine as a white solid (1.2 g, 67%).
[0579] Part E: To a solution of the amine of part D (815 mg, 1.84
mmol) in methanol (5 mL) and THF (5 mL) was added 50 percent
aqueous NaOH (2 mL) and the solution was stirred for 18 hours at
ambient temperature. The solution was concentrated in vacuo and the
residue was diluted with H.sub.2O and acidified to a pH value of 7.
The resulting precipitate was collected by vacuum filtration to
provide the acid as a white solid (680 mg, 86%).
[0580] Part F: To a solution of the acid of part E (620 mg, 1.44
mmol) in dichloromethane (10 mL) and DMF (3 mL) were added PyBroP
(810 mg, 1.73 mmol), N-methylmorpholine (0.5 mL, 4.3 mmol) and
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (190 mg, 1.59 mmol) and
the solution was stirred for 4 hours at ambient temperature. The
solution was concentrated in vacuo, the residue dissolved into
ethyl acetate and washed with H.sub.2O and saturated NaCl, and then
dried over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as a white solid
(630 mg, 83%). MS (CI) MH.sup.+ calculated for
C.sub.28H.sub.36N.sub.2O.sub.6S: 529, found 529.
[0581] Part G: To a solution of the protected hydroxamate of part F
(600 mg, 1.14 mmol) in dioxane (1.5 mL) and methanol (1.5 mL) was
added 4N HCl in dioxane (1.5 mL), and the solution was stirred for
2 hours. The solution was poured into ethyl ether and the resulting
precipitate was collected by vacuum filtration to provide the title
compound as a beige solid (500 mg, 91%). MS(CI) M+Li.sup.+
calculated for C.sub.23H.sub.28N.sub.2O.sub.5S: 445, found 445.
EXAMPLE 12
Preparation of
1-acetyl-N-hydroxy-4-[(4-phenoxyphenyl)sulfonyl]-4-piperidinecarboxamide
[0582] ##STR3353##
[0583] Part A: To a solution of the sulfone of Example 6, part D
(2.75 g, 5.6 mmol) in THF (10 mL) and ethanol (10 mL) was added
NaOH (2.25 g, 56 mmol), and the solution was heated to 70 degrees
Celsius for 18 hours. The solution was concentrated in vacuo, the
residue was dissolved into H.sub.2O and extracted with ethyl ether.
The aqueous solution was acidified to a pH value of 2 and extracted
with ethyl acetate. The organic layer was dried over magnesium
sulfate. Concentration in vacuo provided the crude acid as a solid.
A solution of the acid in dichloromethane (6 mL) and
trifluoroacetic acid (6 mL) was stirred for 1 hour at ambient
temperature. Concentration in vacuo provided the amine
hydrochloride salt as a solid (2.3 g, quantitative yield).
[0584] Part B: To a solution of the amine hydrochloride salt of
part A (2.3 g, <5.6 mmol) in acetone (10 mL) and H.sub.2O (10
mL) cooled to zero degrees Celsius were added triethylamine (1.17
mL, 8.4 mmol) and acetyl chloride (0.60 mL, 8.4 mmol), and the
solution was stirred at ambient temperature for 18 hours. The
solution was concentrated in vacuo to remove the acetone and the
aqueous solution was extracted with ethyl ether. The aqueous layer
was acidified to a pH value of 2 and extracted with ethyl acetate.
The organic layer was dried over magnesium sulfate and
concentration in vacuo provided the N-acetyl compound as a white
solid (1.5 g, 65.2%).
[0585] Part C: To a solution of the N-acetyl compound of part B
(0.6 g, 1.49 mmol) in DMF (10 mL) were added EDC (401 mg, 2.1 mmol)
followed by 50 percent aqueous hydroxylamine (0.9 mL) and
4-methylmorpholine (0.7 mL, 6.4 mmol), and the solution was stirred
for 18 hours at ambient temperature. The solution was concentrated
in vacuo and the residue was dissolved into ethyl acetate. The
organic layer was washed with H.sub.2O and dried over magnesium
sulfate. Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O) provided the title compound as a white solid
(101 mg, 16%). MS(CI) MH.sup.+ calculated for
C.sub.20H.sub.22N.sub.2O.sub.6S: 419, found 419.
EXAMPLE 13
Preparation of
4-[[4-(cyclohexylthio)-phenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)-4-piperi-
dinecarboxamide, monohydrochloride
[0586] ##STR3354##
[0587] Part A: To a solution of the propargyl amine of Example 9,
part F (6.5 g, 18.4 mmol) in DMF (10 mL) were added potassium
carbonate (3.81 g, 27.6 mmol) and cyclohexyl mercaptan (3.37 mL,
27.6 mmol). The solution was heated to 100 degrees Celsius for 6.5
hours. The solution was diluted with H.sub.2O and extracted with
ethyl acetate. The organic layers were dried over magnesium
sulfate. Chromatography (on silica, hexane/ethyl acetate) provided
the sulfide as a yellow oil (6.05 g, 73%).
[0588] Part B: To a solution of the sulfide of part B (612 mg, 1.4
mmol) in ethanol (8.4 mL) and H.sub.2O (1.4 mL) was added potassium
hydroxide (470 mg, 8.4 mmol), and the solution was refluxed for 3
hours. The solution acidifed to a pH value of 3 and was
concentrated in vacuo. The residue was dissolved into acetonitrile
(10 mL) and to this solution were added
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (230 mg, 2.0 mmol) and
triethylamine (0.5 mL) followed by EDC (380 mg, 2.0 mmol), and the
solution was stirred at ambient temperature for 18 hours. The
solution was concentrated in vacuo and the residue was diluted with
saturated NaHCO.sub.3 and extracted with ethyl acetate. The organic
layer was dried over magnesium sulfate. Chromatography (on silica,
ethyl acetate/hexane) provided the protected hydroxamate as an oil
(246 mg, 34%).
[0589] Part C: To a solution of the protected hydroxamate of part B
(246 mg, 0.47 mmol) in methanol (4 mL) was added acetyl chloride
(0.11 mL, 1.5 mmol), and the solution was stirred at ambient
temperature for 3 hours. After concentration in vacuo, reverse
phase chromatography (on silica, acetonitrile/H.sub.2O(HCl))
provided the title compound as a white solid (223 mg, quantitative
yield).
EXAMPLE 14
Preparation of
N-hydroxy-1-methyl-4-[(phenoxyphenyl)sulfonyl]-4-piperidinecarboxamide,
monohydrochloride
[0590] ##STR3355##
[0591] Part A: To a solution of the sulfone of Example 6, part D
(2.67 g, 5.5 mmol) in dichloromethane (5 mL) was added
trifluoroacetic acid (5 mL), and the solution was stirred at
ambient temperature for 2 hours. The solution was concentrated in
vacuo and the residue was triturated with ethyl ether to provide
the crude amine trifluoroacetic acid salt. To a solution of the
crude amine salt in methanol (10 mL) were added formaldehyde (37
percent aqueous solution, 2.0 mL, 27.5 mmol) and borane pyridine
(2.2 mL, 22 mmol), and the solution was stirred at ambient
temperature for 18 hours. The solution was concentrated in vacuo.
The residue was dissolved into ethyl acetate, washed with H.sub.2O
and dried over magnesium sulfate. Concentration in vacuo provided
the N-methyl compound as a yellow oil (2.17 g, 98%).
[0592] Part B: To a solution of the N-methyl compound of part A
(2.17 g, 5.4 mmol) in ethanol (10 mL) and THF (10 mL) was added
NaOH (2.0 g, 50 mmol), and the reaction mixture was stirred at
minus 65 degrees Celsius for 18 hours. The solution was
concentrated in vacuo. The residue was dissolved into H.sub.2O and
extracted with ethyl ether. The aqueous solution was acidified to a
pH value of 2 and the resulting solid was collected by vacuum
filtration to provide the acid as a white solid (1.8 g, 90%).
[0593] Part C: To a solution of the acid of part B (0.5 g, 1.3
mmol) in DMF (10 mL) were added EDC (1.06 g, 5.5 mmol) followed by
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (490 mg, 4.2 mmol) and
4-methylmorpholine (0.76 mL) and the solution was stirred at
ambient temperature for 18 hours. The solution was concentrated in
vacuo and the residue was dissolved into ethyl acetate, washed with
H.sub.2O and dried over magnesium sulfate. Concentration in vacuo
provided the crude protected hydroxamate. To a solution of the
crude hydroxamate in methanol (10 mL) was added acetyl chloride
(0.28 mL, 3.9 mmol), and the solution was stirred for 3 hours at
ambient temperature. The solution was concentrated in vacuo.
Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O(0.0125% HCl) provided the title compound as a
white solid (261 mg, 46%). MS(CI) MH.sup.+ calculated for
C.sub.19H.sub.22N.sub.2O.sub.5S: 391, found 391.
EXAMPLE 15
Preparation of
N-hydroxy-4-[[4-(4-methoxyphenoxy)phenyl]sulfonyl]-1-(2-propynyl)-4-piper-
idinecarboxamide, monohydrochloride
[0594] ##STR3356##
[0595] Part A: To a solution of the propargyl amine of Example 9,
part F (2.00 g, 5.66 mmol) in DMF (10 mL) were added cesium
carbonate (4.7 g, 14.5 mmol) and 4-methoxythiophenol (1.80 g, 14.5
mmol), and the solution was heated to 95 degrees Celsius for 24
hours. The solution was diluted with ethyl acetate and washed with
1N NaOH and saturated NaCl, and then dried over magnesium sulfate.
Chromatography (on silica, ethyl acetate/hexane) provided the
phenoxy compound as a solid (2.67 g, quantitative yield).
[0596] Part B: To a solution of the phenoxy compound of part A
(2.40 g, 5.25 mmol) in ethanol (30 mL) and H.sub.2O (6 mL) was
added potassium hydroxide (2.0 g, 31.37 mmol), and the solution was
heated to reflux for 4 hours. The solution was acidified with
concentrated HCl to a pH value of 3 and the residue was collected
by vacuum filtration to provide the crude acid that was carried on
without additional purification.
[0597] Part C: To a solution of the acid of part B (2.25 g, 5.25
mmol) in acetonitrile (30 mL) were added triethylamine (1 mL) and
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (1.34 g, 9.0 mmol). After
the solution was stirred for 15 minutes, EDC (1.72 g, 9.0 mmol) was
added the solution was stirred at ambient temperature for 18 hours.
The solution was concentrated in vacuo and the residue was
dissolved into ethyl acetate. The ethyl acetate solution was washed
with saturated NaHCO.sub.3, H.sub.2O and saturated NaCl and dried
over magnesium sulfate. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as a white solid
(0.93 g, 33%).
[0598] Part D: To a solution of the protected hydroxamate of part C
(0.93 g, 1.7 mmol) in methanol (15 mL) was added acetyl chloride
(0.36 mL, 5.1 mmol) and the solution was stirred for 3 hours. The
solution was concentrated in vacuo to provide the title compound as
a white solid (650 mg, 82%). Analytical calculation for
C.sub.22H.sub.24N.sub.2O.sub.6S HCl: C, 54.84; H, 5.24; N, 5.82; S,
6.67; Cl, 6.67. Found: C, 53.10; H, 5.07; N, 5.59; S, 7.04; Cl,
6.32.
EXAMPLE 16
Preparation of
4-[(4-(4-butoxy-1-piperidinyl)phenyl]sulfonyl]-tetrahydro-N-hydroxy-2H-py-
ran-4-carboxamide, monohydrochloride
[0599] ##STR3357##
[0600] Part A: To a solution of the tetrahydropyran compound of
Example 11, part C (1.95 g, 6.46 mmol) in DMSO (25 mL) were added
Cs.sub.2CO.sub.3 (7.4 g, 22.6 mmol) and 4-butoxypiperidine (1.25 g,
6.46 mmol) and the solution was heated to 90 degrees Celsius for 1
hour. The solution was quenched with H.sub.2O and extracted with
ethyl acetate. The organic layer was washed with 5 percent aqueous
KHSO.sub.4, saturated NaHCO.sub.3 and saturated NaCl, and dried
over magnesium sulfate. Chromatography (on silica, ethyl
acetate/dichloromethane) provided the amine as a yellow oil (1.85
g, 65%).
[0601] Part B: To a solution of the amine of part A (1.65 g, 3.76
mmol) in THF (10 mL) was added potassium trimethylsilanolate (530
mg, 4.13 mmol), and the solution was stirred for 22 hours at
ambient temperature. The solution was concentrated in vacuo and the
crude residue was used as is in the next reaction.
[0602] Part C: To a solution of the crude acid of part B (1.74 g,
3.76 mmol) in dichloromethane (10 mL) were added PyBroP (2.10 g,
4.51 mmol), N-methylmorpholine (1.24 mL, 11.3 mmol) and
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (484 mg, 4.14 mmol), and
the solution was stirred for 30 minutes at ambient temperature. The
solution was concentrated in vacuo. The residue was dissolved into
ethyl acetate and washed with H.sub.2O and saturated NaCl, and
dried over magnesium sulfate. Chromatography (on silica, ethyl
acetate/hexane/methanol) provided the protected hydroxamate as a
colorless oil (1.5 g, 76% over two steps).
[0603] Part D: To a solution of the protected hydroxamate of part C
(1.25 g, 2.4 mmol) in dioxane (3 mL) was added 4N HCl in dioxane (3
mL), and the solution was stirred for 15 minutes. After methanol (3
mL) was added the solution was stirred for 5 hours at ambient
temperature. The solution was poured into ethyl ether and the
resulting precipitate was collected by vacuum filtration to provide
the title compound as a white solid (1.0 g, 88%). MS(CI) MH.sup.+
calculated for C.sub.21H.sub.32N.sub.2O.sub.6S: 441, found 441.
EXAMPLE 17
Preparation of 1-cyclopropyl-N-hydroxy-4-[(4-phenoxyphenyl)
sulfonyl]-4-piperidinecarboxamide, monohydrochloride
[0604] ##STR3358##
[0605] Part A: To a solution of the amine hydrochloride salt of
Example 6, part E (2.13 g, 5.0 mmol) in methanol (25 mL) was added
3A molecular sieves, acetic acid (2.86 mL, 50 mmol) and the
solution was stirred for 5 minutes. To this solution was added
((1-ethyoxycyclopropyl)oxy)-trimethylsilane (6.08 mL, 30 mmol)
followed by sodium cyanoborohydride (1.41 g, 22.0 mmol), and the
solution was heated to reflux for 18 hours. The excess salts and
sieves were collected by filtration and the filtrate was
concentrated in vacuo. The residue was diluted with ethyl acetate
and washed with 1N NaOH, H.sub.2O and saturated NaCl, and dried
over magnesium sulfate. Chromatography (on silica, ethyl
acetate/hexane) provided the cyclopropyl amine as a white solid
(1.90 g, 86%).
[0606] Part B: To a solution of the cyclopropyl amine of part A
(1.9 g, 4.2 mmol) in THF (12 mL) and ethanol (12 mL) was added NaOH
(1.71 g, 4.3 mmol) in H.sub.2O (10 mL), and the solution was heated
to 62 degrees Celsius for 20 hours. The solution was concentrated
in vacuo and the residue was diluted with H.sub.2O and acidified to
a pH value of 5 with 1N HCl. The resulting solid was collected by
vacuum filtration to provide the acid as a white solid (1.49 g,
82%). MS(CI) MH.sup.+ calculated for C.sub.21H.sub.23NO.sub.5S:
402, found 402. HRMS calculated for C.sub.21H.sub.23NO.sub.5S:
402.1375, found 402.1350.
[0607] Part C: To a solution of the acid of part C (1.49 g, 3.4
mmol) in dichloromethane (50 mL) was added triethylamine (1.42 mL,
10.21 mmol) followed by 50 percent aqueous hydroxylamine (2.25 mL,
34.0 mmol) and PyBroP (3.17 g, 6.8 mmol), and the solution was
stirred for 72 hours. The mixture was diluted with H.sub.2O and the
organic layer was separated, washed with saturated NaCl and dried
over magnesium sulfate. Concentration in vacuo followed by reverse
phase chromatography (on silica, acetonitrile/H.sub.2O) provided
the hydroxamate.
[0608] The hydrochloride salt was prepared by dissolving the free
base (830 mg, 2.0 mmol) in methanol (20 mL) followed by the
addition of acetyl chloride (0.17 mL, 2.0 mmol). The solution was
stirred for 10 minutes at zero degrees Celsius. The resulting white
solid was collect by vacuum filtration and washed with cold ethyl
ether to provide the title compound (595 mg, 66%). HRMS calculated
for C.sub.21H.sub.24N.sub.2O.sub.5S: 416.1407, found 416.1398.
Analytical calculation for C.sub.21H.sub.24N.sub.2O.sub.5S: C,
55.68; H, 5.56; N, 6.18; S, 7.08; Cl, 7.83. Found: C, 55.39; H,
5.72; N, 6.15; S, 7.29; Cl, 8.17.
EXAMPLE 18
Preparation of
N-hydroxy-1-(methylsulfonyl)-4-(phenoxyphenyl)-sulfonyl]-4-piperidinecarb-
oxamide
[0609] ##STR3359##
[0610] Part A: To a solution of the amine hydrochloride salt of
Example 6, part E (1.06 g, 2.5 mmol) in dichloromethane (10 mL)
were added triethylamine (0.76 mL, 5.5 mmol) and methanesulfonyl
chloride (0.23 mL, 3.0 mmol), and the solution was stirred for 18
hours at ambient temperature. The solution was concentrated in
vacuo and the residue was partitioned between ethyl acetate and
H.sub.2O. The organic layer was washed with H.sub.2O and saturated
NaCl and dried over magnesium sulfate. Chromatography (on silica,
ethyl acetate/hexane) provided the methanesulfonamide as a solid
(2.1 g, 58%).
[0611] Part B: To a solution of the methanesulfonamide of part A
(2.0 g, 4.15 mmol) in ethanol (12 mL) and H.sub.2O (12 mL) was
added NaOH (1.66 g, 41.5 mmol), and the solution was heated to 65
degrees Celsius for 18 hours. The solution was concentrated in
vacuo and the remaining aqueous solution was acidified to a pH of
4. The solution was extracted with ethyl acetate and the organic
layer was washed with saturated NaCl and dried over magnesium
sulfate. Concentration in vacuo provided the acid as a yellow foam
(1.46 g, 80%).
[0612] Part C: To a solution of the acid of part B (1.46 g, 3.38
mmol) in dichloromethane (50 mL) were added triethylamine (1.41 mL,
10.1 mmol), 50 percent aqueous hydroxylamine (2.2 mL, 33.8 mmol)
and PyBroP (3.16 g, 6.76 mmol), and the solution was stirred at
ambient temperature for 72 hours. The solution was diluted with
H.sub.2O and the organic layer was separated and washed with
saturated NaCl, and then dried over magnesium sulfate. Reverse
phase chromatography (on silica, acetonitrile/H.sub.2O) followed by
trituration with ethyl ether provide the title compound as a white
solid (160 mg, 11%). Analytical calculation for
C.sub.19H.sub.22N.sub.2O.sub.7S.sub.2: C, 50.21; H, 4.88; N, 6.16;
S, 14.11. Found: C, 48.72; H, 5.36; N, 5.61; S, 12.81.
EXAMPLE 19
Preparation of
4-[[4-(cyclohexylthio)-phenyl]sulfonyl]-N-hydroxy-4-piperidinecarboxamide-
, monohydrochloride
[0613] ##STR3360##
[0614] Part A: To a solution of the sulfone of Example 9, part D
(10.1 g, 24.0 mmol) in DMF (20 mL) were added K.sub.2CO.sub.3 (5.0
g, 36.0 mmol) and cyclohexylmercaptan (4.4 mL, 36.0 mmol), and the
solution was heated at 85 degrees Celsius for 6.5 hours. The
solution was partitioned between ethyl acetate and H.sub.2O. The
organic layer was washed with saturated NaCl and dried over
magnesium sulfate. Chromatography (on silica, ethyl acetate/hexane)
provided the sulfide as a oil (8.2 g, 67%).
[0615] Part B: To a solution of the sulfide (2.32 g, 4.5 mmol) in
ethanol (10 mL) and THF (10 mL) was added NaOH (1.81 g, 45 mmol) in
H.sub.2O (10 mL), and the solution was heated to 65 degrees Celsius
for 18 hours. The solution was concentrated in vacuo and the
aqueous residue was acidified to a pH value of 2. The solution was
extracted with dichloromethane and dried over magnesium sulfate.
Concentration in vacuo provided the acid as a white solid (830 mg,
38%).
[0616] Part C: To a solution of the acid of part B (2.0 g, 4.0
mmol) in dichloromethane (25 mL) were added N-methylmorpholine
(1.32 mL, 12.0 mmol), PyBroP (2.12 g, 2.12 mmol) and 50 percent
aqueous hydroxylamine (2.6 mL, 40 mmol), and the solution was
stirred for 18 hours at ambient temperature. The solution was
diluted with H.sub.2O and the layers were separated. The organic
layer was washed with saturated NaCl and dried over magnesium
sulfate. Chromatography (on silica, ethyl acetate/methanol)
provided the hydroxamate as a white solid (1.4 g, 70%).
[0617] Part D: Into a solution of the hydroxamate of part C (1.31
g, 2.63 mmol) in ethyl acetate (70 mL) cooled to zero degrees
Celsius was bubbled HCl gas for 30 minutes. The solution was
concentrated in vacuo. Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O(HCl)) provided the title compound as a white
solid (378 mg, 33%). Analytical calculation for
C.sub.18H.sub.26N.sub.2O.sub.4S.sub.2: C, 49.70; H, 6.26; N, 6.44;
S, 14.74; Cl, 8.15. Found: C, 48.99; H, 6.34; N, 6.24; S, 14.66;
Cl, 8.56.
EXAMPLE 20
Preparation of
tetrahydro-N-hydroxy-4-[[4-(4-phenyl-1-piperazinyl)phenyl]sulfonyl]-2H-py-
ran-4-carboxamide, dihydrochloride
[0618] ##STR3361##
[0619] Part A: To a solution of the tetrahydropyran compound of
Example 11, part C (1.96 g, 6.5 mmol) in DMSO (20 mL) were added
Cs.sub.2CO.sub.3 (4.9 g, 15 mmol) and 4-phenylpiperazine (1.1 mL,
7.15 mmol), and the solution was heated to 90 degrees Celsius for
45 minutes. The solution was quenched by the addition of H.sub.2O
and was extracted with ethyl acetate. The organic layer was washed
with 5 percent aqueous KHSO.sub.4, saturated NaHCO.sub.3 and
saturated NaCl and dried over magnesium sulfate. Concentration in
vacuo provided the amine as a beige solid (1.7 g, 59%).
[0620] Part B: To a solution of the amine of part A (1.5 g, 3.38
mmol) in THF (20 mL) was added potassium trimethylsilanolate (480
mg, 3.72 mmol), and the solution was stirred at ambient temperature
for 22 hours. Concentration in vacuo provided the crude acid salt
to be used without purification in the next step.
[0621] Part C: To a solution of the acid salt of part B (1.58 g,
3.38 mmol) in dichloromethane (10 mL) and DMF (3 mL) were added
PyBroP (1.89 g, 4.06 mmol), N-methylmorpholine (1.1 mL, 10.1 mmol)
and O-tetrahydro-2H-pyran-2-yl-hydroxylamine (435 mg, 3.72 mmol),
and the solution was stirred at ambient temperature for 18 hours.
The solution was concentrated in vacuo and the residue was
partitioned between ethyl acetate and H.sub.2O and the organic
layer was washed with H.sub.2O and saturated NaCl, and then dried
over magnesium sulfate. Chromatography (on silica,
dichloromethane/methanol) provided the protected hydroxamate as a
white foam (1.7 g, 95% over two steps).
[0622] Part D: To a solution of the protected hydroxamate of part C
(1.28 g, 2.4 mmol) in dioxane (5 mL) and methanol (5 mL) was added
4N HCl in dioxane (5 mL), and the solution was stirred for 2 hours
at ambient temperature. The solution was poured into ethyl ether
and the resulting precipitate was collected by vacuum filtration to
provide the title compound as a white solid (900 mg, 73%). MS(CI)
MH.sup.+ calculated for C.sub.22H.sub.27N.sub.3O.sub.5S: 446, found
446.
EXAMPLE 21
Preparation of
4-[[4-(cyclohexylthio)-phenyl]sulfonyl]-1-cyclopropyl)-N-hydroxy-4-piperi-
dine carboxamide, monohydrochloride
[0623] ##STR3362##
[0624] Part A: To a solution of the sulfone of Example 9, part D
(10.1 g, 24.0 mmol) in DMF (20 mL) were added K.sub.2CO.sub.3 (5.0
g, 36.0 mmol) and cyclohexylmercaptan (4.4 mL, 36.0 mmol), and the
solution was heated at 85 degrees Celsius for 6.5 hours. The
solution was partitioned between ethyl acetate and H.sub.2O. The
organic layer was washed with saturated NaCl and dried over
magnesium sulfate. Chromatography (on silica, ethyl acetate/hexane)
provided the sulfide as a oil (8.2 g, 67%).
[0625] Part B: HCl gas was bubbled for 30 minutes into a solution
of the sulfide of part B (8.2 g, 17.0 mmol) in ethyl acetate (100
mL) cooled to zero degrees Celsius. The solution was concentrated
in vacuo to provide the amine as a white solid (5.99 g, 79%).
MS(CI) MH.sup.+ calculated for C.sub.20H.sub.29NO.sub.4S: 412,
found 412.
[0626] Part C: To a solution of the amine of part B (2.24 g, 5.0
mmol) in methanol (20 mL) was added acetic acid (2.86 mL, 50 mmol)
followed by (1-ethoxycyclopropyl) oxytrimethylsilane (6.03 mL, 30
mmol) and sodium borohydride (1.41 g, 22.5 mmol), and the solution
was refluxed for 18 hours. The solution was concentrated in vacuo
and the residue was dissolved into ethyl acetate and washed with 1N
NaOH, H.sub.2O and saturated NaCl and dried over magnesium sulfate.
Chromatography (on silica, ethyl acetate/hexane) provided the
cyclopropyl amine as a white solid (1.97 g, 87%).
[0627] Part D: To a solution of the cyclopropyl amine of part C
(1.9 g, 4.2 mmol) in ethanol (10 mL) and THF (10 mL) was added NaOH
(1.68 g, 42.0 mmol) in H.sub.2O (10 mL) and the solution was heated
at sixty-eight degrees Celsius for 18 hours. The solution was
concentrated in vacuo and the aqueous residue was acidified to a pH
value of 2. The resulting solid was collected and washed with ethyl
ether to provide the acid as a white solid (1.61 g, 81%). HRMS
calculated for C.sub.21H.sub.29NO.sub.4S.sub.2: 424.1616, found
424.1615.
[0628] Part E: To a solution of the acid of part D (1.61 g, 3.0
mmol) in dichloromethane (30 mL) were added N-methylmorpholine (1.0
g, 9.0 mmol), PyBroP (1.54 g, 3.3 mmol) and 50 percent aqueous
hydroxylamine (2.0 mL, 30 mmol), and the solution was stirred for
18 hours at ambient temperature. The solution was concentrated in
vacuo. The residue was partitioned between ethyl acetate and
H.sub.2O, the organic layer washed with H.sub.2O and saturated
NaCl, and then dried over magnesium sulfate. Filtration through a
silica pad (ethyl acetate/methanol) gave the hydroxamate as a white
solid (1.07 g, 80%).
[0629] Part F: To a solution of the hydroxamate of part F (1.07 g,
2.4 mmol) in cold methanol (2 mL) was added acetyl chloride (0.27
mL, 3.6 mmol), and the solution was stirred for 30 minutes. The
solution was concentrated in vacuo. Reverse phase chromatography
(acetonitrile/H.sub.2O(HCl)) provided the title compound as a white
solid (245 mg, 21%).
EXAMPLE 22
Preparation of
4-[[4-[(4-fluorophenyl)thio]phenyl]sulfonyl]-N-hydroxy-4-piperidinecarbox-
amide, monohydrochloride
[0630] ##STR3363##
[0631] Part A: To a solution of the sulfone of Example 9, part D
(6.0 g, 14.4 mmol) in DMF (30 mL) were added potassium carbonate
(2.39 mg, 17.3 mmol) and 4-fluorothiophenol (3.0 mL, 28.1 mmol),
and the solution was stirred at ambient temperature for 18 hours.
The solution was diluted with ethyl acetate and washed with 1N NaOH
and saturated NaCl, and thrn dried over magnesium sulfate.
Chromatography (on silica, ethyl acetate/hexane) provided the
sulfide as a solid (6.6 g, 87%).
[0632] Part B: To a solution of the sulfide of part A (6.6 g, 12.6
mmol) in ethanol (90 mL) and H.sub.2O (20 mL) was added sodium
hydroxide (5.04 g, 126 mmol), and the solution was heated at 70
degrees Celsius for 18 hours. The mixture was acidified to a pH
value of 4 and the solution was extracted with ethyl acetate. The
organic layer was washed with saturated NaCl and dried over
magnesium sulfate. Chromatography (on silica, ethyl
acetate/ethanol) provided the solid acid (4.8 g, 79%).
[0633] Part C: To a solution of the acid of part B (4.8 g, 10.0
mmol) in DMF (30 mL) was added 4-methylmorpholine (3.03 g, 30.0
mmol) followed by O-tetrahydro-2H-pyran-2-yl-hydroxylamine (7.45 g,
50.0 mmol) and PyBroP (5.59 g, 12.0 mmol), and the solution was
stirred for 18 hours at ambient temperature. The solution was
concentrated in vacuo. The residue was dissolved into ethyl acetate
and washed with H.sub.2O and saturated NaCl, and then dried over
magnesium sulfate. Chromatography (on silica, ethyl acetate/hexane)
provided the protected hydroxamate as a white solid (4.0 g,
67%).
[0634] Part D: HCl gas was bubbled for 5 minutes into a solution of
the protected hydroxamate of part D (4.0 g, 6.7 mmol) in ethyl
acetate (120 mL) followed by stirring at ambient temperature for
1.5 hours. The resulting solid was collected by vacuum filtration
to provide the title compound as a white solid (1.90 g, 64%).
MS(CI) MH.sup.+ calculated for
C.sub.18H.sub.19N.sub.2O.sub.4S.sub.2F: 411, found 411.
EXAMPLE 23
Preparation of
N-hydroxy-4-[[4-[4-(1H-imidazol-1-yl)phenoxy]phenyl]sulfonyl]-1-(2-propyn-
yl)-4-piperidinecarboxamide, dihydrochloride
[0635] ##STR3364##
[0636] Part A: To a solution of the amine hydrochloride salt of
Example 9, part F (3.00 g, 8.49 mmol) in DMF (13 mL) were added
K.sub.2CO.sub.3 (2.35 g, 17.0 mmol) and 4-(imidazol-1-yl)phenol
(2.72 g, 17.0 mmol), and the solution was heated to 85 degrees
Celsius for 64 hours. The solution was concentrated and the residue
was partitioned between ethyl acetate and H.sub.2O. The organic
layer was washed with H.sub.2O and saturated NaCl and dried over
magnesium sulfate. Chromatography (on silica, chloroform/methanol)
provided the ethyl ester as a white foam (2.36 g, 56%).
[0637] Part B: To a solution of the ethyl ester of part A (2.36 g,
5.33 mmol) in ethanol (2.8 mL) and H.sub.2O (4.6 mL) was added KOH
(1.80 g, 32.1 mmol), and the solution was heated to 100 degrees
Celsius for 4.5 hours. The solution was acidified to a pH value of
1 with concentrated HCl solution and then concentrated to provide
the acid as a tan solid that was used without additional
purification (2.87 g).
[0638] Part C: To a solution of the acid of part B (2.87 g, 5.33
mmol) in acetonitrile (24 mL) were added
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (870 mg, 7.45 mmol), EDC
(1.43 g, 7.45 mmol) and N-methylmorpholine (1.21 mL, 11.0 mmol) and
the solution was stirred for 18 hours at ambient temperature. The
solution was concentrated and the residue was diluted with H.sub.2O
and extracted with ethyl acetate. The organic layer was washed with
H.sub.2O and saturated NaCl and dried over magnesium sulfate.
Chromatography (chloroform, methanol) provided the protected
hydroxylamine as a white solid (1.62 g, 53%).
[0639] Part D: To a solution of the protected hydroxylamine of part
C (1.60 g, 2.83 mmol) in methanol (23 mL) was added acetyl chloride
(0.61 mL, 8.52 mmol), and the solution was stirred for 1 hour. The
solution was concentrated in vacuo. Reverse phase chromatography
(on silica, acetonitrile/H.sub.2O) provided the title compound as a
white solid (975 mg, 62%). MS(CI) MH.sup.+ calculated for
C.sub.24H.sub.25N.sub.4O.sub.5S: 481, found 481. Analytical
calculation for C.sub.24H.sub.25N.sub.4O.sub.5S 2HCl: C, 52.08; H,
4.73; N, 10.12; S, 5.79; Cl, 12.81. Found: C, 51.59; H, 4.84; N,
10.93; S, 5.51; Cl, 11.98.
EXAMPLE 24
Preparation of
4-([4-[(4-fluorophenyl)thiophenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)-4-pi-
peridinecarboxamide, monohydrochloride
[0640] ##STR3365##
[0641] Part A: To a solution of the propargyl amine of Example 9,
part F (4.06 g, 11.49 mmol) in DMF (20 mL) were added potassium
carbonate (3.18 g, 22.98 mmol) and 4-fluorothiophenol (2.95 g,
22.98 mmol), and the solution was stirred for 18 hours at ambient
temperature. The solution was diluted with ethyl acetate, washed
with 1N NaOH and saturated NaCl, and dried over magnesium sulfate.
Chromatography (on silica, ethyl acetate/hexane) provided the
sulfide as a solid (4.46 g, 84%).
[0642] Part B: To a solution of the sulfide of part A (4.46 g, 9.7
mmol) in tetrahydropyran (90 mL), H.sub.2O (30 mL) and ethanol (30
mL) was added NaOH (3.86 g, 97.0 mmol), and the solution was heated
to 65 degrees Celsius for 2 hours. The solution was concentrated in
vacuo and the residue was dissolved into H.sub.2O and acidified to
a pH value of 4 with 2N HCl. The resulting residue was collected by
vacuum filtration to provide the acid as a white solid (4.0 g,
95%).
[0643] Part C: To a solution of the acid of part B (4.0 g, 9.2
mmol) in DMF (50 mL) and 4-methylmorpholine (2.8 g, 27.7 mmol) was
added O-tetrahydro-2H-pyran-2-yl-hydroxylamine (6.88 g, 46.1 mmol)
and PyBroP (5.16 g, 11.1 mmol), and the solution was stirred at
ambient temperature for 18 hours. The solution was concentrated in
vacuo and the residue was dissolved into ethyl acetate. The
solution was washed with H.sub.2O and saturated NaCl, and dried
over magnesium sulfate. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as a white solid
(2.8 g, 56%).
[0644] Part D: HCl gas was bubbled for 10 minutes into a solution
of the protected amine of part C (2.8 g, 5.1 mmol) in ethyl acetate
(100 mL), and the solution was then stirred for 1 hour. The
solution was concentrated in vacuo and the solid recrystallized
(ethanol) to provide the title compound as a white solid (1.12 g,
45%). MS(CI) MH.sup.+ calculated for
C.sub.21H.sub.21N.sub.2O.sub.4S.sub.2F: 449, found 449.
EXAMPLE 25
Preparation of
4-[[4-[(4-chlorophenyl)-thio]phenyl]sulfonyl]tetrahydro-N-hydroxy-2H-pyra-
n-4-carboxamide
[0645] ##STR3366##
[0646] Part A: To a solution of the tetrahydropyran compound of
Example 11, part C (8.0 g, 26.5 mmol) in THF (250 mL) was added
potassium trimethylsilonate (10.2 g, 79.5 mmol), and the solution
was stirred for 1.5 hours. The reaction was quenched by the
addition of H.sub.2O, acidified to a pH value of 2.5, and the
solution was extracted with ethyl acetate. The organic layer was
washed with saturated NaCl and dried over Na.sub.2SO.sub.4.
Concentration in vacuo provide the acid salt as a white solid (5.78
g, 76%).
[0647] Part B: To a solution of the acid salt of part A (5.4 g,
18.7 mmol) in DMF (35 mL) were added HOBT (3.04 g, 22.5 mmol),
N-methylmorpholine (6.2 mL, 56.2 mmol),
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (6.8 g, 58.1 mmol) and EDC
(5.0 g, 26.2 mmol), and the solution was stirred for 3 hours at
ambient temperature. The solution was concentrated in vacuo, the
residue partitioned between ethyl acetate and H.sub.2O, and the
organic layer was washed with 5 percent aqueous KHSO.sub.4,
H.sub.2O, saturated NaHCO.sub.3 and saturated NaCl, and then dried
over Na.sub.2SO.sub.4. Concentration in vacuo provided the
protected hydroxamate as a white solid (6.34 g, 87%).
[0648] Part C: To a solution of p-chlorothiophenol (2.71 g, 18.7
mmol) in DMF (10 mL) was added K.sub.2CO.sub.3 (2.6 g, 18.7 mmol)
followed by the protected hydroxamate of part B (2.9 g, 7.5 mmol)
and the solution was heated at 75 degrees Celsius for 5 hours. The
solution was concentrated in vacuo, the residue partitioned between
ethyl acetate and H.sub.2O, the organic layer was washed with
saturated NaCl, and dried over Na.sub.2SO.sub.4. Chromatography (on
silica, ethyl acetate/hexane/methanol) provided the sulfide as a
white foam (3.56 g, 93%). MS(CI) MH.sup.+ calculated for
C.sub.23H.sub.26ClNO.sub.6S.sub.2: 512, found 512.
[0649] Part D: To a solution of the sulfide of part C (3.5 g, 6.8
mmol) in dioxane (10 mL) was added 4N HCl in dioxane (10 mL). After
10 minutes of stirring, methanol (10 mL) was added with continued
stirring for one hour. The solution was concentrated in vacuo.
Recrystallization (acetone/hexane) provided the title compound as a
white solid (2.4 g, 83%). MS(CI) MH.sup.+ calculated for
C.sub.18H.sub.18ClNO.sub.5S: 428, found 428.
EXAMPLE 26
Preparation of
Tetrahydro-N-hydroxy-4-[[4-(4-(1H-1,2,4-triazol-1-yl)
phenoxy]-phenyl]-sulfonyl]-2H-pyran-4-, carboxamide,
monohydrohloride
[0650] ##STR3367##
[0651] Part A: To a solution of the protected hydroxamate of
Example 25, part B (2.9 g, 7.5 mmol) in DMF (10 mL) was added
4-(1,2,4-triazol-1-yl)phenol (2.47 g, 15 mmol) in DMF (5 mL)
followed by Cs.sub.2CO.sub.3 (7.33 g, 22.5 mmol), and the solution
was heated at 95 degrees Celsius for 5 hours. The solution was
concentrated in vacuo and the residue was partitioned between ethyl
acetate and H.sub.2O. The organic layer was washed with saturated
NaCl and dried over Na.sub.2SO.sub.4. Chromatography (on silica,
ethyl acetate/hexane/methanol) provided the phenol as a white solid
(3.16 g, 80%).
[0652] Part B: To a solution of the phenol of part A (2.8 g, 5.3
mmol) in dioxane (10 mL) was added 4N HCl in dioxane (10 mL). After
5 minutes of stirring, methanol (10 mL) was added and stirring was
continued for 1 hour. The solution was then poured into ethyl
ether, and the resulting precipitate was collected by vacuum
filtration to provide the title compound as a white solid (2.44 g,
96%). MS(CI) MH.sup.+ calculated for
C.sub.20H.sub.20N.sub.4O.sub.6S: 445, found 445.
EXAMPLE 27
Preparation of
1-cyclopropyl-4-[[4-[(4-fluorophenyl)thio]phenyl]sulfonyl]-N-hydroxy-4-pi-
peridinecarboxamide, monohydrochloride
[0653] ##STR3368##
[0654] Part A: HCl gas was bubbled for 7 minutes into a solution of
the sulfide of Example 9, part D (7.06 g, 13.5 mmol) in ethyl
acetate (150 mL), and the solution was stirred for 15 minutes at
zero degrees Celsius. The solution was concentrated in vacuo to
provide the amine as a white solid (6.43 g, quantitative
yield).
[0655] Part B: To a solution of the amine of part A (6.4 g, 13.9
mmol) in methanol (65 mL) was added acetic acid (7.96 mL, 139 mmol)
and a scoop of 3A molecular sieves. To this mixture was added
(1-ethoxycyclopropyl)-oxytrimethylsilane (16.8 mL, 84 mmol)
followed by sodium cyanoborohydride (3.9 g, 62 mmol). The solution
was heated to reflux for 6 hours. The solution was filtered and the
filtrate was concentrated in vacuo. The residue was dissolved into
ethyl acetate, washed with H.sub.2O, 2N NaOH and saturated NaCl,
and dried over magnesium sulfate. Filtration through a pad of
silica (hexane/ethyl acetate) provided the cyclopropyl amine as a
white solid (6.49 g, quantitative yield).
[0656] Part C: To a solution of the cyclopropyl amine of part B
(6.4 g, 13.8 mmol) in ethanol (30 mL) and THF (30 mL) was added
NaOH (5.5 g, 138 mmol) in H.sub.2O (23 mL), and the solution was
heated to 65 degrees Celsius for 12 hours. The solution was
concentrated in vacuo and the aqueous layer was acidified to a pH
value of 2 with 2N HCl. The resulting white precipitate was
collected by filtration to provide the acid as a white solid (5.2
g, 87%). MS(CI) MH.sup.+ calculated for
C.sub.21H.sub.22NO.sub.4S.sub.2F: 436, found 436.
[0657] Part D: To a solution of the acid of part C (2.27 g, 5.2
mmol) in DMF (60 mL) was added HOBT (845 mg, 6.2 mmol) followed by
N-methylmorpholine (1.71 mL, 15.6 mmol), EDC (1.40 g, 7.28 mmol)
and O-tetrahydro-2H-pyran-2-yl-hydroxylamine (913 mg, 7.8 mmol),
and the solution was stirred at ambient temperature for 72 hours.
The solution was concentrated in vacuo, the residue was dissolved
into dichloromethane and washed with H.sub.2O and saturated NaCl,
and then dried over magnesium sulfate. Chromatography (on silica,
hexane/ethyl acetate) provided the protected hydroxamate as a white
solid (1.95 g, 70%).
[0658] Part E: To a solution of the protected hydroxamate of part D
(3.2 g, 6.0 mmol) in cold methanol (100 mL) was added acetyl
chloride (1.3 mL, 18.0 mmol) in methanol (30 mL), and the solution
was stirred at ambient temperature for 4 hours. The solution was
concentrated in vacuo and the residue was triturated with ethyl
ether to provide the title compound as a white solid (2.86 g, 98%).
MS(CI) MH.sup.+ calculated for
C.sub.21H.sub.23N.sub.2O.sub.4S.sub.2F: 451, found 451. Analytical
calculation for C.sub.21H.sub.23N.sub.2O.sub.4S.sub.2F 0.25H.sub.2O
HCl: C, 51.32; H, 5.02; N, 5.70; S, 13.05; Cl, 7.21. Found: C,
50.99; H, 4.91; N, 5.65; S, 13.16; Cl, 7.83.
EXAMPLE 28
Preparation of
N-hydroxy-4-[[4-(phenylthio)phenyl]sulfonyl]-1-(2-propenyl)-4-piperidine
carboxamide, monohydrochloride
[0659] ##STR3369##
[0660] Part A: To a solution of the amine hydrochloride salt of
Example 9, part E (4.78 g, 10.8 mmol) in DMF (25 mL) were added
K.sub.2CO.sub.3 (2.98 g, 21.6 mmol) and allyl bromide (0.935 mL,
10.8 mmol), and the solution was stirred for 5 hours at ambient
temperature. The solution was partitioned between ethyl acetate and
H.sub.2O, and the organic layer was washed with H.sub.2O and
saturated NaCl, and dried over magnesium sulfate. Filtration
through a pad of silica (hexane/ethyl acetate) provided the allyl
amine as an oil (4.80 g, quantitative yield).
[0661] Part B: To a solution of the allyl amine of part A (4.8 g,
10.8 mmol) in ethanol (25 mL) and THF (25 mL) was added NaOH (4.3
g, 108 mmol) in H.sub.2O (20 .mu.L), and the solution was heated to
65 degrees Celsius for 18 hours. The solution was concentrated in
vacuo and diluted with H.sub.2O. The aqueous solution was acidified
to a pH value of 3. The resulting precipitate was collected by
vacuum filtration to provide the acid as a beige solid (4.1 g,
84%). MS(CI) MH.sup.+ calculated for
C.sub.21H.sub.23NO.sub.4S.sub.2: 418, found 418.
[0662] Part C: To a solution of the acid of part B (4.1 g, 9.0
mmol) in DMF (90 mL) was added HOBT (1.46 g, 11.0 mmol) followed by
N-methylmorpholine (2.97 mL, 2.7 mmol),
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (1.58 g, 13.5 mmol) and
EDC (2.42 g, 13.0 mmol), and the solution was stirred for 72 hours.
The solution was concentrated in vacuo. The residue was dissolved
in dichloromethane and washed with H.sub.2O and saturated NaCl, and
then dried over magnesium sulfate. Chromatography (on silica, ethyl
acetate/methanol) provided the protected hydroxylamine as a white
solid (4.11 g, 88%).
[0663] Part D: To a solution of the protected hydroxylamine of part
C (4.11 g, 8.0 mmol) in ethyl acetate (100 mL) cooled to zero
degrees Celsius was added acetyl chloride (1.71 mL, 24.0 mmol), and
the solution was stirred for 4 hours at ambient temperature. The
solution was concentrated in vacuo and trituration with ethyl ether
provided the title compound as a white solid (3.53 g, 95%).
Analytical calculation for C.sub.21H.sub.24N.sub.2O.sub.4S.sub.2
HCl 0.5H.sub.2O: C, 52.76; H, 5.48; N, 5.86; S, 13.42; Cl, 7.42.
Found: C, 52.57; H, 5.69; N, 6.29; S, 12.59; Cl, 7.80.
EXAMPLE 29
Preparation of
1-(cyclopropylmethyl)-N-hydroxy-4-[(4-phenoxyphenyl)sulfonyl]-4-piperidin-
e carboxamide, monohydrochloride
[0664] ##STR3370##
[0665] Part A: To a solution of the amine hydrochloride salt of
Example 6, part E (2.13 g, 5.0 mmol) in DMF (10 mL) were added
K.sub.2CO.sub.3 (1.4 g, 10.0 mmol) and bromomethylcyclopropane
(0.48 mL, 5.0 mmol), and the solution was stirred for 18 hours at
ambient temperature. The solution was partitioned between ethyl
acetate and H.sub.2O, the organic layer was washed with H.sub.2O
and saturated NaCl, and then dried over magnesium sulfate.
Chromatography (on silica, ethyl acetate/hexane) provided the solid
cyclopropylmethylamine (2.09 g, 91%).
[0666] Part B: To a solution of the cyclopropylmethylamine of part
A (2.0 g, 4.4 mmol) in ethanol (12 mL) and THF (12 mL) was added
NaOH (1.75 g, 44 mmol) in H.sub.2O (10 mL), and the solution was
heated to 65 degrees Celsius for 18 hours. The solution was
concentrated in vacuo and the aqueous residue was acidified to a pH
value of 5. The resulting precipitate was collected by vacuum
filtration to provide the acid as a white solid (1.58 g, 79%). HRMS
calculated for C.sub.22H.sub.25NO.sub.5S: 414.1375, found
414.1334.
[0667] Part C: To a solution of the acid of part B (1.58 g, 3.5
mmol) in dichloromethane (50 mL) was added triethylamine (1.46 mL,
10.5 mmol) followed by 50 percent aqueous hydroxylamine (2.3 mL, 35
mmol) and PyBroP (3.26 g, 6.99 mmol), and the solution was stirred
at ambient temperature for 72 hours. The solution was washed with
H.sub.2O and saturated NaCl, and dried over magnesium sulfate.
Reverse phase chromatography (on silica, acetonitrile/H.sub.2O)
provided the hydroxamate as a white solid (3.2 g, quantitative
yield).
[0668] Part D: To a solution of the hydroxamate of part C (1.5 g,
3.5 mmol) in cold methanol (20 mL) was added acetyl chloride (0.25
mL, 3.5 mmol) in methanol (5 mL) and the solution was stirred at
zero degrees Celsius for 15 minutes. After the solution had stirred
for an additional 30 minutes at ambient temperature, it was
concentrated in vacuo. Trituration with ethyl ether provided the
title compound as a white solid (229 mg, 7%).
EXAMPLE 30
Preparation of
N-hydroxy-1-(2-methoxyethyl)-4-[(4-phenoxyphenyl)-sulfonyl]-4-piperidine
carboxamide, monohydrchloride
[0669] ##STR3371##
[0670] Part A: To a solution of the amine HCl salt of part E,
Example 6 (2.5 g, 5.87 mmol) and K.sub.2CO.sub.3 (1.6 g, 11.57
mmol) in N,N-dimethylformamide (25 mL) was added 2-bromoethyl
methyl ether (0.66 mL, 7.0 mmol) and then stirred at ambient
temperature for 18 hours. Then N,N-dimethylformamide was evaporated
under high vacuum and residue was diluted with ethyl acetate. The
organic layer was washed with water and dried over
Mg.sub.2SO.sub.4. Concentration in vacuo provided the methoxyl
ethyl amine as light yellow gel (2.63 g, quantitative yield).
[0671] Part B: To a solution of the methoxy]ethyl amine of part A
(2.63 g, 5.87 mmol) in tetrahydrofuran (18 mL) and ethanol (18 mL)
was added NaOH (2.1 g, 5.25 mmol) in water (6 mL). The solution was
heated to reflux for 12 hours. The solution was concentrated in
vacuo and diluted with water. The aqueous layer was extracted with
ether (2.times.100 mL) and was acidified to pH=2. Vacuum filtration
of the resulting precipitation provided the acid as a white solid
(2.4 g, quantitative yield).
[0672] Part C: To a solution of the acid of part B (2.0 g, 4.33
mmol), also containing N-methyl morpholine (1.8 mL, 16.4 mmol), and
O-tetrahydro-2H-pyran-yl-hydroxylamine (0.767 g, 6.44 mmol) in
N,N-dimethylformamide (20 mL) was added
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (3.1
g, 16.2 mmol), and solution was stirred at ambient temperature for
20 hours. The solution was concentrated under high vacuum and the
residue was dissolved in ethyl acetate. The organic layer was
washed with H.sub.2O and dried over Mg.sub.2SO.sub.4. Concentration
in vacuo provided the amide as off white foam (1.60 g, 71.1%).
[0673] Part D: To a solution of the amide of part C (1.58 g, 3.05
mmol) in methanol (20 mL) cooled to zero degrees Celsius was added
acetyl chloride (0.65 mL, 9.15 mmol) and the resulting solution was
stirred at the same temperature for 3 hours. The solution was
concentrated and reverse phase chromatography (on C-18 silica,
acetonitrile/H.sub.2O with 0.01% HCl) provided hydroxamate HCl salt
as a white solid (0.65 g, 45.5%). Analytical calculation for
C.sub.21H.sub.26N.sub.2O.sub.6S.HCl.0.75H.sub.2O: C, 52.06; H,
5.93; N, 5.78; S, 6.62. Found: C, 51.94; H, 5.67; N, 5.91; S, 6.66.
HSMS calculated for C.sub.21H.sub.26N.sub.2O.sub.6S: 435.1590,
found 435.1571.
EXAMPLE 31
Preparation of
N-hydroxy-4-[(4-phenoxyphenyl)sulfonyl]-1-(1-pyrrolidinylacetyl)-4-piperi-
dine carboxamide, monohydrochloride
[0674] ##STR3372##
[0675] Part A: To a solution of the sulfone of part D, Example 6
(2.75 g, 5.6 mmol) in tetrahydrofuran (10 mL) and ethanol (10 mL)
was added NaOH (2.25 g, 56 mmol) in H.sub.2O (20 mL), and the
solution was heated to 70 degrees Celsius for 20 hours. The
solution was concentrated in vacuo and the dry residue was
dissolved in H.sub.2O. The aqueous layer was extracted with ether
and was acidified to pH=2 followed by the extraction with ethyl
acetate. The combined organic layers were washed again with
H.sub.2O and dried over Mg.sub.2SO.sub.4. Concentration in vacuo
provided the BOC-acid as white foam (2.3 g, 88.8%).
[0676] Part B: To a solution of BOC-acid of part A (2.3 g, 4.98
mmol) in dichloromethane (6 mL) was added trifluroacetic acid (6
mL, 77.8 mmol), and the resulting solution was stirred at ambient
temperature for 1 hour. Concentration in vacuo provided the amine
as white foam (2.44 g, quantitative yield).
[0677] Part C: To the solution of the amine of part B (2.4 g, 4.9
mmol) and triethylamine (3.5 mL, 24.4 mmol) in acetone (15 mL) and
H.sub.2O (15 mL) was added chloroacetyl chloride (1.2 mL, 14.7
mmol), and solution was stirred at ambient temperature for 20
hours. Then acetone was evaporated and aqueous layer was acidified
to pH=2. The aqueous layer was extracted with ethyl acetate and the
organic layer was washed with water and dried over
Mg.sub.2SO.sub.4. Concentration in vacuo provided the chloroacetyl
amide as light yellow gel (2.78 g, quantitative yield).
[0678] Part D: To the solution of the chloroacetyl amide of part C
(2.78 .mu.g, 4.93 mmol) and K.sub.2CO.sub.3 (5 g, 36 mmol) in
N,N-dimethylformamide (20 mL) was added pyrolidine (3 mL, 36 mmol).
The solution was then stirred at ambient temperature for 18 hours.
Then N,N-dimethylformamide was evaporated under high vacuum and
reverse phase chromatography (on C-18 silica, acetonitrile/H.sub.2O
with 0.01% HCl) provided pyrolidine acetyl amide (0.25 g,
10.7%).
[0679] Part E: To a solution of the pyrolidine acetyl amide of part
D (0.25 g, 0.53 mmol), also containing N-methyl morpholine (0.14
mL, 1.27 mmol), 1-hydroxybenzotriazole (0.17 g, 1.2 mmol) and
O-tetrahydro-2H-pyran-yl-hydroxylamine (0.15 g, 1.26 mmol) in
N,N-dimethylformamide (4 mL) was added
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (0.23
g, 1.2 mmol). The solution was then stirred at ambient temperature
for 18 hours. The solution was concentrated under high vacuum and
the residue was dissolved in ethyl acetate. The organic layer was
washed with saturated NaHCO.sub.3, H.sub.2O and dried over
Mg.sub.2SO.sub.4. Concentration in vacuo provided the THP amide as
white foam (0.25 g, 83.3%).
[0680] Part F: To a solution of the amide of part E (0.25 g, 0.437
mmol) in methanol (4 mL) cooled to zero degrees Celsius was added
acetyl chloride (0.075 mL, 1.05 mmol), and the resulting solution
was stirred at ambient temperature for 2.5 hours. The solution was
concentrated and reverse phase chromatography (on C-18 silica,
acetonitrile/H.sub.2O with 0.01% HCl) provided hydroxamate HCl salt
as a white solid (80 mg, 29%). Analytical calculation for
C.sub.24H.sub.29N.sub.3O.sub.6S.HCl.0.9H.sub.2O: C, 53.36; H, 5.98;
N, 7.78. Found: C, 53.61; H, 5.71; N, 7.94. HSMS calculated for
C.sub.24H.sub.29N.sub.3O.sub.6S: 488.1855, found 488.1835.
EXAMPLE 32
Preparation of
1-cyclopropyl-N-hydroxy-4-[[4-(phenylthio)phenyl]sulfonyl]-4-piperidine
carboxamide, monohydrochloride
[0681] ##STR3373##
[0682] Part A: A solution of 4-flurothiophenol (50.29 g, 0.39 mmol)
in dimethylsulfoxide (500 mL) was heated to 65 degrees Celsius for
5 hours. The solution was cooled to ambient temperature and poured
into vigorously stirred ice water. The precipitate was filtered and
washed twice with water. Drying under high vacuum provided the
disulfide as a yellow oil (34.39 g, 68.9%) at ambient
temperature.
[0683] Part B: A solution of di-tert-butyl dicarbonate (21.8 g, 0.1
mol) in tetrahydrofuran (5 mL) was added dropwise over 20 minutes
to a solution of ethyl isonipecotate (15.7 g, 0.1 mol) in
tetrahydrofuran (100 mL). The resulting solution was stirred
overnight (about eighteen hours) at ambient temperature and
concentrated in vacuo to yield a light oil. The oil was filtered
through silica gel (ehyl acetate/hexane) and concentrated in vacuo
to give the BOC-piperidine compound as a clear, colorless oil (26.2
g, quantitative yield).
[0684] Part C: To a solution of BOC-piperidine compound of part B
(15.96 g, 62 mmol) in tetrahydrofuran (300 mL), cooled to minus
forty degrees Celsius, was added lithium diisopropylamide (41.33
mL, 74 mmol). The solution was then stirred at minus forty degrees
C. for one hour and zero degreec C for one-half hour. Then the
solution was cooled to minus forty degrees Celsius again and the
disulfide of part A (15.77 g, 62 mmol) in tetrahydrofuran (20 mL)
was added. The resulting solution as stirred at ambient temperature
for 18 hours. The solution was diluted with H.sub.2O and extracted
with ethyl acetate. The organic layer was washed with H.sub.2O and
saturated NaCl and dried over MgSO.sub.4. Chromatography (on
silica, ethyl acetate/hexane) provided the sulfide as an oil (18 g,
75%).
[0685] Part D: To a solution of the sulfide of part C (16.5 g, 43
mmol) in dichloromethane (500 mL) cooled to zero degrees Celsius,
was added m-chloroperbenzoic acid (18.5 g, 107 mmol). After 2
hours, the solution was diluted with dichloromethane and washed
with 1N KOH, H.sub.2O and dried over MgSO.sub.4. Concentration in
vacuo provided the sulfone as a solid (21 g, quantitative
yield).
[0686] Part E: To a solution of sulfone (40 g, 96 mmol) of part D
and powdered K.sub.2CO.sub.3 (26 g, 188 mmol) in
N,N-dimethylformamide (200 mL) cooled to zero degrees Celsius was
added thiolphenol (19.8 mL, 192 mmol), and the reculting
composition was then stirred at ambient temperature for 36 hours.
That solution was concentrated under high vacuum and the residue
was dissolved in ethyl acetate. The organic layer was washed with
H.sub.2O and dried over magnesium sulfate. Chromatography (on
silica, ethyl acetate/hexane) provided phenyl thiophenyl
Boc-sulfone as white solid (44.34 g, 91%).
[0687] Part F: To a solution of phenyl thiophenyl Boc-sulfone of
part E (8.6 g, 17 mmol) in dichloromethane (30 mL) cooled to zero
degrees Celsius was added trifluroacetic acid (TFA; 30 mL), and the
resulting solution was stirred at ambient temperature for 2 hours.
Concentration in vacuo provided the amine TFA salt as a light
yellow gel (8.7 g, quantitative yield).
[0688] Part G: To a solution of amine TFA salt of part F (6 g, 11.9
mmol) was added acetic acid (6.8 mL, 119 mmol). After 5 minutes
stirring at ambient temperature,
(1-ethoxylcyclopropyl)oxytriomethylsilane (14.3 mL, 71.4 mmol) was
added followed 5 minutes later by the addition of sodium cyanoboran
hydrate (3.35 g, 53.55 mmol). Then the solution was heated to
reflux for 18 hours. Methanol was evaporated and residue was
dissolved in ethyl acetate. The organic layer was washed with 1N
NaOH, H.sub.2O and dried over Mg.sub.2SO.sub.4. Concentration in
vacuo gave the cyclopropylamine as an off-white powder (4.9 g,
92.6%).
[0689] Part H: To a solution of the cyclopropylamine of part G
(4.88 g, 10.95 mmol) in tetrahydrofuran (12.5 mL) and ethanol (12.5
mL) was added NaOH (4.3 g, 100 mmol) in water (25 mL). The solution
was then heated to 50-55 degrees Celsius for 12 hours and was
stirred at ambient temperature for 18 hours. Solution was acidified
to pH=2 and concentration in vacuo provided the acid as white solid
together with NaCl in the mixture. To a solution of this mixture in
acetonitrile (50 mL) were added O-tetrahydropyronylamine (1.95 g,
16.3 mmol), N-methylmorpholine (2.4 mL, 21.9 mmol), and
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (3.14
g, 16.3 mmol) in sequence. The solution was then stirred at ambient
temperature for 18 hours. The solution was concentrated in vacuo
and the residue was dissolved in ethyl acetate. The organic layer
was washed with H.sub.2O and dried over Mg.sub.2SO.sub.4.
Concentration in vacuo provided the tetrehyrdopyronyl (THP) amide
as white solid (3.0 g, 53.1%).
[0690] Part I: To a solution of the THP amide of part H (3 g, 5.8
mmol) in methanol (45 mL) cooled to zero degrees Celsius was added
acetyl chloride (1.5 mL, 21.1 mmol), and the solution was stirred
at ambient temperature for 2.5 hours. Vacuum filtration of the
precipitate provided hydroxamate HCl salt as a white solid (1.844
g, 68.3%). Analytical calculation for
C.sub.21H.sub.24N.sub.2O.sub.4S.sub.2.HCl: C, 53.78; H, 5.37; N,
5.97; S, 13.67. Found: C, 53.40; H, 5.26; N, 5.95; S, 13.68.
EXAMPLE 33
Preparation of
N-hydroxy-1-methyl-4-[[4-(phenylthio)phenyl]sulfonyl]-4-piperidinecarboxa-
mide, monohydrochloride
[0691] ##STR3374##
[0692] Part A: To a solution of amine TFA salt of part F, Example
32 (2.67 g, 5.14 mmol) and 37% formaldehyde in aqueous solution
(2.0 mL, 25.7 mmol) in methanol (20 mL) was added borane pyridine
(2.6 mL, 25.7 mmol) at ambient temperature. The solution was then
stirred at ambient temperature for 18 hours. The solution was
acidified to destroy excess reagent. Methanol was evaporated and
the residue was partitioned between NaHCO.sub.3 aqueous solution
and ethyl acetate. The NaHCO.sub.3 aqueous layer was extracted with
ethyl acetate. The combined organic layers were washed with
H.sub.2O and dried over Mg.sub.2SO.sub.4. Concentration in vacuo
gave the methyl amine as off white foam (1.6 g, 76%).
[0693] Part B: To a solution of the methyl amine of part A (1.63 g,
3.88 mmol) in ethanol (20 mL) was added KOH (1.31 g, 23.2 mmol) in
water (4 mL), and the resulting solution was heated to 50 degrees
Celsius for 8 hours, 70 degree Celsius for 4 hours and stirred at
ambient temperature for 18 hours. The solution was acidified and
concentrated in vacuo providing the acid as white solid together
with NaCl in the mixture. To a solution of this mixture in
N,N-dimethylformamide (50 mL) were added O-tetrahydropyronylamine
(0.92 g, 7.76 mmol), N-methylmorpholine (1.05 mL, 7.76 mmol), and
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (1.5
g, 7.76 mmol) in sequence. The solution was stirred at ambient
temperature for 72 hours. The solution was concentrated in high
vacuum and the residue was dissolved in ethyl acetate. The organic
layer was washed with saturated NaHCO.sub.3, H.sub.2O and dried
over Mg.sub.2SO.sub.4. Concentration in vacuo and chromatography
(silica, dichloromethane/methanol) provided the THP amide as white
solid (0.46 g, 24.2%).
[0694] Part C: To a solution of the THP amide of part B (0.22 g,
0.45 mmol) in methanol (5 mL) cooled to zero degrees Celsius was
added acetyl chloride (0.096 mL, 13.5 mmol), and the resulting
solution was stirred at ambient temperature for 3 hours. The
solution was concentrated in vacuo and reverse phase chromatography
(on C-18 silica, acetonitrile/H.sub.2O with 0.01% HCl) provided
hydroxamate HCl salt as a white solid (0.12 g, 60.6%). HSMS
calculated for C.sub.19H.sub.22N.sub.2O.sub.4S.sub.2: 407.1099,
found 407.1105.
EXAMPLE 34
Preparation of N-hydroxy-1-(1-methylethyl)-4-[[4-(phenylthio)
phenyl]sulfonyl]-4-piperidinecarboxamide, monohydrochloride
[0695] ##STR3375##
[0696] Part A: Into a solution of BOC-sulfone of part E, Example 32
(11.19 g, 22.12 mmol) in ethyl acetate (150 mL) cooled to zero
degrees Celsius was bubbled HCl gas for 20 minutes. The solution
was stirred at the same temperature for another 40 minutes.
Concentration in vacuo and titration with ether provided the amine
HCl salt (9.88 g, quantitative yield).
[0697] Part B: To a solution of amine HCl salt of part A (4.7 g,
10.6 mmol), triethylamine (2.0 mL, 14.4 mmol) and acetone (2.0 mL,
27.2 mmol) in dichloromethane (100 mL) were added sodium
triacetoxylborohydride (5.7 g, 26.9 mmol) followed by acetic acid
(1.5 mL, 26.9 mmol) at ambient temperature. The solution was
stirred for 18 hours and then partitioned in 1N NaOH and ether. The
aqueous layer was extracted with ether and combined organic layers
were washed with 1N NaOH, H.sub.2O and dried over Mg.sub.2SO.sub.4.
Concentration in vacuo gave the isopropyl amine as white foam (4.58
g, 96.2%).
[0698] Part C: To a solution of the isopropyl amine of part B (4.58
g, 10.2 mmol) in tetrahydrofuran (10 mL) and ethanol (10 mL) was
added NaOH (2.1 g, 5.25 mmol) in water (20 mL). The solution was
heated to 60 degrees Celsius for 13.5 hours, then stirred at
ambient temperature for 18 hours. The solution was acidified and
concentrated in vacuo providing the acid as white solid together
with NaCl in the mixture. To a solution of this mixture in
N,N-dimethylformamide (75 mL) were added 1-hydroxybenzotriazole
(1.94 g, 14.4 mmol), O-tetrahydropyronylamine (1.8 g, 15.1 mmol),
N-methylmorpholine (3.37 mL, 30.7 mmol), and
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (2.74
g, 14.3 mmol) in sequence. The solution was stirred at ambient
temperature for 48 hours. The solution was concentrated in high
vacuum and the residue was dissolved in ethyl acetate. The organic
layer was washed with saturated NaHCO.sub.3, H.sub.2O and dried
over Mg.sub.2SO.sub.4. Concentration in vacuo and chromatography
(silica, dichloromethane/methanol) provided the THP amide as white
solid (3.78 g, 71.3%).
[0699] Part D: To a solution of the THP amide of part C (1.15 g,
2.2 mmol) in methanol (20 mL) was added acetyl chloride (0.096 mL,
13.5 mmol), and the resulting solution was stirred at ambient
temperature for 2.5 hours. The solution was concentrated in vacuo
and reverse phase chromatography (on C-18 silica,
acetonitrile/H.sub.2O with 0.01% HCl) provided hydroxamate HCl salt
as a white solid (0.69 g, 66.3%). Analytical calculation for
C.sub.21H.sub.26N.sub.2O.sub.4S.sub.2.HCl.H.sub.2O: C, 51.58; H,
5.98; N, 5.73; S, 13.11. Found: C, 51.76; H, 5.47; N, 5.72; S,
12.68.
EXAMPLE 35
Preparation of
N-hydroxy-1-(2-methoxyethyl)-4-[[4-(phenylthio)phenyl]-sulfonyl]-4-piperi-
dinecarboxamide, monohydrochloride
[0700] ##STR3376##
[0701] Part A: To the solution of the amine HCl salt of part A,
Example 34 (4.3 g, 9.43 mmol) and K.sub.2CO.sub.3 (2.62 g, 19.0
mmol) in N,N-dimethylformamide (40 mL) was added 2-bromoethyl
methyl ether (1.9 mL, 20.2 mmol). The solution was stirred at
ambient temperature for 48 hours. Then N,N-dimethylformamide was
evaporated under high vacuum and the residue was diluted with ethyl
acetate. The organic layer was washed with water and dried over
Mg.sub.2SO.sub.4. Concentration in vacuo provided the methoxyl
ethyl amine as white foam (4.26 g, 95.3%).
[0702] Part B: To a solution of the methoxy ethyl amine of part A
(4.26 g, 9.2 mmol) in tetrahydrofuran (5 mL) and ethanol (5 mL) was
added NaOH (3.7 g, 92.5 mmol) in water (9 mL). The solution
resulting was heated to 60 degrees Celsius for 12 hours and stirred
at ambient temperature for 18 hours. The solution was concentrated
in vacuo and diluted with water. The aqueous layer was extracted
with ether (2.times.100 mL) and was acidified to pH=2. Vacuum
filtration of the resulting precipitate provided the acid as a
while solid (3.5 g, 87.5%).
[0703] Part C: To a solution of the acid of part B (3.4 g, 7.8
mmol), also containing N-methyl morpholine (2.6 mL, 23.4 mmol),
1-hydroxybenzotriazole (3.16 g, 23.4 mmol), and
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (1.85 g, 15.5 mmol) in
N,N-dimethylformamide (20 mL) was added
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (4.47
g, 23.4 mmol). The solution was stirred at ambient temperature for
36 hours. The solution was concentrated under high vacuum and the
residue was dissolved in ethyl acetate. The organic layer was
washed with saturated NaHCO.sub.3, H.sub.2O and dried over
Mg.sub.2SO.sub.4. Concentration in vacuo provided the amide as off
white solid (2.98 g, 71.5%).
[0704] Part D: To a solution of the amide of part C (2.98 g, 5.6
mmol) in methanol (40 mL) cooled to zero degrees Celsius was added
acetyl chloride (1.19 mL, 16.8 mmol), and the resulting solution
was stirred at the ambient temperature for 3 hours. The solution
was concentrated and reverse phase chromatography (on C-18 silica,
acetonitrile/H.sub.2O with 0.01% HCl) provided hydroxamate HCl salt
as a white solid (2.29 g, 84.6%). Analytical calculation for
C.sub.21H.sub.26N.sub.2O.sub.6S.HC1.0.9H.sub.2O: C, 50.12; H, 5.77;
N, 5.57; S, 12.74. Found: C, 50.41; H, 5.85; N, 5.73; S, 12.83.
EXAMPLE 36
Preparation of
1-acetyl-N-hydroxy-4-[[4-(phenylthio)phenyl]sulfonyl]-4-piperidinecarboxa-
mide, monohydrochloride
[0705] ##STR3377##
[0706] Part A: To a solution of the phenyl thiophenyl BOC-sulfone
of part E, Example 32 (7 g, 1.29 mmol) in tetrahydrofuran (25 mL)
and ethanol (25 mL) was added NaOH (5.1 g, 12.9 mmol) in H.sub.2O
(50 mL). The solution was heated to reflux for 20 hours. On
cooling, the solution was concentrated in vacuo and the dry residue
was dissolved in H.sub.2O. The aqueous layer was extracted with
ether and was acidified to pH=2 followed by the extraction with
ethyl acetate. The combined organic layers were washed again with
H.sub.2O and dried over Mg.sub.2SO.sub.4. Concentration in vacuo
provided the BOC-acid as white foam (3.9 g, 60%).
[0707] Part B: To a solution of BOC-acid of part A (2.3 g, 4.98
mmol) in dichloromethane (6 mL) was added trifluroacetic acid (6
mL, 77.8 mmol), and the solution was stirred at ambient temperature
for 1 hour. Concentration in vacuo provided the amine as white foam
(2.44 g, quantitative yield).
[0708] Part C: To a solution of the amine of part B (5.0 g, 12.08
mmol) and triethylamine (8.7 mL, 60.4 mmol) in acetone (20 mL) and
H.sub.2O (20 mL) cooled to zero degrees Celsius was added acetyl
chloride (4.6 mL, 36 mmol), and the solution was stirred at ambient
temperature for 40 hours. The acetone was evaporated and the
aqueous layer was acidified to pH=2. The aqueous layer was
extracted with ethyl acetate and the combined organic layers were
washed with water and dried over Mg.sub.2SO.sub.4. Concentration in
vacuo provided the acetyl amide as light yellow foam (5 g,
quantitative yield).
[0709] Part D: To a solution of acetyl amide of part C (5 g, 11.9
mmol), also containing N-methyl morpholine (5.3 mL, 47.6 mmol),
1-hydroxybenzotriazole (4.8 g, 35.7 mmol) and
O-tetrahydro-2H-pyran-yl-hydroxylamine (2.8 g, 23.5 mmol) in
N,N-dimethylformamide (50 mL) was added
1-[3(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (6.8
g, 35.7 mmol), and the solution was stirred at ambient temperature
for 20 hours. The solution was concentrated under high vacuum and
the residue was dissolved in ethyl acetate. The organic layer was
washed with saturated NaHCO.sub.3, KHSO.sub.4, H.sub.2O and dried
over Mg.sub.2SO.sub.4. Concentration in vacuo provided the THP
amide as white foam (6.07 g, 98.2%).
[0710] Part E: To a solution of the THP amide of part D (6.07 g,
11.7 mmol) in methanol (100 mL) cooled to zero degrees Celsius was
added acetyl chloride (2.5 mL, 35.1 mmol), and the solution was
stirred at ambient temperature for 3 hours. The solution was
concentrated and chromatography (on silica,
methanol/dichloromethane) provided hydroxamate HCl salt as a white
solid (3.3 g, 65%). Analytical calculation for
C.sub.24H.sub.29N.sub.3O.sub.6S.HCl.0.9H.sub.2O: C, 53.36; H, 5.98;
N, 7.78. Found: C, 53.61; H, 5.71; N, 7.94. HSMS calculated for
C.sub.24H.sub.29N.sub.3O.sub.6S: 488.1855, found 488.1835.
EXAMPLE 37
Preparation of
1-acetyl-4-[[4-(1,3-benzodioxol-5-yloxy)phenyl]sulfonyl]-N-hydroxy-4-pipe-
ridinecarboxamide, monohydrochloride
[0711] ##STR3378##
[0712] Part A: To a solution of sulfone from Part D, Example 32 (25
g, 67.3 mmol) and powdered K.sub.2CO.sub.3 (23.3 g, 16.9 mmol) in
N,N-dimethylformamide was added sesamol (23.24 g, 16.8 mmol) at
ambient temperature, and solution was heated to ninety degrees
Celsius for 24 hours. The solution was concentrated under high
vacuum and the residue was dissolved in ethyl acetate. The organic
layer was washed with 1N NaOH, H.sub.2O and dried over MgSO.sub.4.
Chromatography (on silica, ethyl acetate/hexane) provided sesamol
BOC-sulfone as a white foam (33.6 g, 93.6%).
[0713] Part B: To a solution of sesamol BOC-sulfone of part E
(29.31 g, 54.93 mmol) in ethanol (60 mL) and tetrahydrofuran (60
mL) was added NaOH (21.97 g, 544 mmol) from addition funnel over 20
minutes at ambient temperature. The solution was then heated to
sixty degrees Celsius for 9 hours, then ambient temperature for 12
hours. The solution was concentrated in vacuo and diluted with
water. The aqueous layer was extracted with ether and acidified to
pH=2. It was then extracted with ethyl acetate and the combined
organic layers were washed with H.sub.2O and dried over MgSO.sub.4.
Concentration in vacuo provided the acid as white solid (25.3,
91%).
[0714] Part C: HCl gas was bubbled into a solution of the acid of
part F (20.3 g, 40.15 mmol) in ethyl acetate cooled to zero degrees
Celsius. After 1.5 hours, vacuum filtration of white precipitate
provided the amine HCl salt as a white solid (16 g, 93.6%).
[0715] Part D: To the solution of the amine HCl salt of part G (8.1
g, 19.01 mmol) and triethylamine (13.2 mL, 95.05 mmol) in acetone
(150 mL) and H.sub.2O (150 mL) cooled to zero degrees Celsius was
added acetyl chloride (5.4 mL, 76 mmol). The solution was stirred
at ambient temperature for 18 hours. The acetone was evaporated and
aqueous layer was acidified to pH=2. The aqueous layer was
extracted with ethyl acetate and the combined organic layers were
washed with water and dried over Mg.sub.2SO.sub.4. Concentration in
vacuo provided the acetyl amide as light yellow foam (9.24 g,
quantitative yield).
[0716] Part E: To the solution of the acetyl amide of part D (9.1
g, 20.33 mmol), N-methyl morpholine (6.7 mL, 61 mmol),
1-hydroxybenzotriazole (8.2 g, 60 mmol) and
O-tetrahydro-2H-pyran-yl-hydroxylamine (4.85 g, 40 mmol) in
N,N-dimethylformamide (40 mL) was added
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride
(11.65 g, 60 mmol). The resulting solution was stirred at ambient
temperature for 20 hours. The solution was then concentrated under
high vacuum and the residue was dissolved in ethyl acetate. The
organic layer was washed with saturated NaHCO.sub.3, KHSO.sub.4,
H.sub.2O and dried over Mg.sub.2SO.sub.4. Concentration in vacuo
and chromatography (on silica, ethyl acetate/hexane) provided the
THP amide as white a foam (10 g, 89.7%).
[0717] Part F: To a solution of 4N HCl in dioxane (20 mL) was added
a solution of the amide of part E (5.0 g, 9.1 mmol) in methanol (5
mL) and dioxane (15 mL). That solution was stirred at ambient
temperature for 30 minutes. Vacuum filtration of the white
precipitate provided the hydroxamate HCl salt as a white solid (3.3
g, 65%). Analytical calculation for
C.sub.21H.sub.22N.sub.2O.sub.8S.HCl: C, 54.34; H, 5.15; N, 5.49; S,
6.43. Found: C, 54.54; H, 4.79; N, 6.06; S, 6.93. HSMS calculated
for C.sub.21H.sub.22N.sub.2O.sub.8S: 463.1175, found 463.118.
EXAMPLE 38
Preparation of
4-[[4-(3,4-dimethoxyphenoxy)phenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)-4-p-
iperidinecarboxamide, monohydrochloride
[0718] ##STR3379##
[0719] Part A: HCl gas was bubbled into a solution of the sulfone
of part D, Example 32 (10 g, 24 mmol) in ethyl acetate cooled to
zero degrees Celsius. After 4 hours, vacuum filtration of the white
precipitate provided the amine HCl salt as a white solid (7.27 g,
86%).
[0720] Part B: To a solution of the amine HCl salt of part A (5.98
g, 17 mmol) and powered K.sub.2CO.sub.3 (4.7 g, 34 mmol) in
N,N-dimethylformamide (120 mL) was added propargyl bromide (2.022
g, 17 mmol) at ambient temperature, followed by stirring for 4
hours. The solution was diluted with ethyl acetate and washed with
H.sub.2O, saturated NaCl and dried over Mg.sub.2SO.sub.4.
Concentration in vacuo and chromatography (on silica, ethyl
acetate/hexane) provided the propargyl amine as a white solid (5.2
g, 86%).
[0721] Part C: To a solution of the propargyl amine of part B (8 g,
22.63 mmol) and powdered K.sub.2CO.sub.3 (8.8 g, 56.6 mmol) in
N,N-dimethylformamide (150 mL) was added 3,4-dimethoxyphenol (6.98
g, 45 mmol) at ambient temperature. The composition was heated to
90 degrees Celsius for 36 hours. The solution was concentrated
under high vacuum and the residue was dissolved in ethyl acetate.
The organic layer was washed with 1N NaOH, H.sub.2O and dried over
MgSO.sub.4. Chromatography (on silica, ethyl acetate/hexane)
provided phenoxy propargyl amine as light yellow gel (10 g,
90.9%).
[0722] Part D: A solution of NaOH (8.2 g, 200 mmol) in H.sub.2O (30
mL) from addition funnel was added to a solution of the phenoxy
propargyl amine of part C (10 g, 20.5 mmol) in ethanol (15 mL) and
tetrahydrofuran (15 mL) at ambient temperature. The resulting
solution was then heated to 60 degrees Celsius for 48 hours and at
ambient temperature for 48 hours. The solution was concentrated in
vacuo and diluted with water. The aqueous layer was extracted with
ether and acidified to pH=2. Vacuum filtration of the white
precipitate provided the acid as a white solid (9.4 g, quantitative
yield).
[0723] Part E: To a solution of the acid of part D (9.4 g, 20.5
mmol), N-methyl morpholine (6.8 mL, 62 mmol),
1-hydroxybenzotriazole (8.3 g, 60 mmol) and
O-tetrahydro-2H-pyran-yl-hydroxylamine (4.8 g, 40 mmol) in
N,N-dimethylformamide (50 mL) was added
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (11.7
g, 60 mmol). The resulting solution was then stirred at ambient
temperature for 20 hours. The solution was concentrated under high
vacuum and the residue was dissolved in ethyl acetate. The organic
layer was washed with saturated NaHCO.sub.3. H.sub.2O and dried
over Mg.sub.2SO.sub.4. Concentration in vacuo and chromatography
(on silica, ethyl acetate/hexane) provided the THP amide as white
foam (10 g, 89.7%).
[0724] Part F: To a solution of 4N HCl in dioxane (38 mL, 152
mmol)) was added a solution of the amide of part E (8.5 g, 15.2
mmol) in methanol (8 mL) and dioxane (24 mL). The resulting
composition was stirred at ambient temperature for 80 minutes.
Concentration in vacuo and titration with ether provided
hydroxamate HCl salt as a white solid (7.7 g, quantitative yield).
HSMS calculated for C.sub.23H.sub.26N.sub.2O.sub.7S: 475.1461,
found 475.1539.
EXAMPLE 39
Preparation of
4-[[4-(3,5-dimethoxyphenoxy)phenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)-4-p-
iperidinecarboxamide, monohydrochloride
[0725] ##STR3380##
[0726] Part A: To a solution of the propargyl amine of Part B,
Example 38 (2 g, 5.6 mmol) and powdered K.sub.2CO.sub.3 (1.9 g,
13.7 mmol) in N,N-dimethylformamide (20 mL) was added
3,5-dimethoxyphenol (2.18 g, 13.7 mmol) at ambient temperature. The
resulting composition was heated to 90 degrees Celsius for 36
hours. The solution was concentrated under high vacuum and the
residue was dissolved in ethyl acetate. The organic layer was
washed with 1N NaOH, H.sub.2O and dried over MgSO.sub.4.
Chromatography (on silica, ethyl acetate/hexane) provided phenoxy
propargyl amine as light yellow gel (2.76 g, quantitative
yield).
[0727] Part B: To a solution of the phenoxy propargyl amine of part
A (2.75 g, 5.6 mmol) in ethanol (5 mL) and tetrahydrofuran (5 mL)
was added NaOH (2.3 g, 56 mmol) in H.sub.2O (10 mL) at ambient
temperature. The solution was then heated to 60 degrees Celsius for
18 hours. The solution was concentrated in vacuo and diluted with
water. The aqueous layer was extracted with ether and acidified to
pH=2. Vacuum filtration of white precipitate provided the acid as
white solid (2 g, 77.2%).
[0728] Part C: To a solution of the acid of part B (2 g, 4.3 mmol),
also containing N-methyl morpholine (1.9 mL, 17.2 mmol),
1-hydroxybenzotriazole (1.74 g, 13.2 mmol) and
O-tetrahydro-2H-pyran-yl-hydroxylamine (1.02 g, 8.6 mmol) in
N,N-dimethylformamide (20 mL) was added
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (2.47
g, 12.9 mmol). The resulting composition was stirred at ambient
temperature for 20 hours. The solution was concentrated under high
vacuum and the residue was dissolved in ethyl acetate. The organic
layer was washed with saturated NaHCO.sub.3, H.sub.2O and dried
over Mg.sub.2SO.sub.4. Concentration in vacuo and chromatography
(on silica, ethyl acetate/hexane) provided the THP amide as white
foam (2.4 g, quantitative yield).
[0729] Part D: To a solution of 4N HCl in dioxane (13 mL, 52 mmol))
was added a solution of the THP amide of part C (2.43 g, 4.35 mmol)
in methanol (2 mL) and dioxane (6 mL), and the composition was
stirred at ambient temperature for 80 minutes. Vacuum filtration of
the precipitate and washing with ether provided the hydroxamate HCl
salt as a white solid (1.25 g, 56.3%). Analytical calculation for
C.sub.23H.sub.26N.sub.2O.sub.7S.1.5HCl: C, 52.20; H, 5.24; N, 5.29.
Found: C, 52.00; H, 5.05; N, 5.17.
EXAMPLE 40
Preparation of
4-[[4-(1,3-benzodioxol-5-yloxy)phenyl]sulfonyl]-N-hydroxy-4-piperidinecar-
boxamide, monohydrochloride
[0730] ##STR3381##
[0731] Part A: To a solution of the N-BOC carboxylic acid compound
of part B, Example 37 (1.25 g, 2.47 mmol), N-methylmorpholine (1.00
g, 9.89 mmol) and 1-hydroxybenzotriazole hydrate (0.40 g, 2.96
mmol) in N,N-dimethylformamide (8 mL) at ambient temperature was
added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride
(0.616 g, 3.21 mmol). After 5 minutes a solution of
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.39 g, 3.33 mmol) in
N,N-dimethylformamide (2 mL) was added. After 2 days the pale
yellow solution was concentrated in vacuo to afford a residue which
was dissolved in ethyl acetate and washed successively with water
(3.times.) and brine and dried over sodium sulfate. Concentration
afforded a residue that was chromatographed on silica gel eluting
with ethyl acetate/hexane (20/80) to afford the THP-protected
hydroxamate as an oil (1.54 g, 100%).
[0732] Part B: To a solution of THP-protected hydroxamate of part A
(1.49 g, 2.46 mmol) in dioxane (9 mL) and methanol (3 mL) was added
4 N HCl in dioxane (10 mL, 40 mmol). After 1.5 hours at ambient
temperature the suspension was treated with diethyl ether (15 mL)
and filtered to afford the title hydroxamate (1.00 g, 89%) as a
colorless powder. MS (CI) MH.sup.+ calculated for
C.sub.19H.sub.20N.sub.2SO.sub.7: 421, found 421. Analytical
calculation for C.sub.19H.sub.20N.sub.2SO.sub.7.HCl: C, 49.95; H,
4.63; N, 6.13; Cl, 7.76; S, 7.02. Found: C, 49.82; H, 4.60; N,
5.98; Cl, 17.38; S, 7.10.
EXAMPLE 41
Preparation of
N-hydroxy-4-[[4-(3-methylphenoxy)phenyl]sulfonyl]-1-(2-propynyl)-4-piperi-
dinecarboxamide, monohydrochloride
[0733] ##STR3382##
[0734] Part A: To a solution of propargylamine of part F, Example 9
(8.0 gm, 22.6 mmol) and K.sub.2CO.sub.3 in N,N-dimethylformamide
(30 mL) was added m-cresol (3.5 g, 33.9 mmol) and the solution was
stirred at 90 degrees Celsius for 18 hours. The solution was
diluted with H.sub.2O and extracted with ethyl acetate. The
combined organic layers were washed with saturated NaCl and dried
over MgSO.sub.4. Chromatography (on silica, eluting with 10% ethyl
acetate/hexane) provided the 3-methyl phenoxyphenyl compound as a
solid (10.3 g, 98%). Cal'd MS for C.sub.24H.sub.28NSO.sub.5
441.1688, found 442.1697.
[0735] Part B: To a solution of 3-methyl phenoxyphenyl compound of
part A (10.3 g, 22.0 mmol) in tetrahydrofuran (50 mL) and ethanol
(50 mL) was added NaOH (8.9 g, 22.3 mol) and the solution was
heated at 65 degrees Celsius for 24 hours. The solution was
concentrated in vacuo and the aqueous residue was acidified to
pH=3. Vacuum filtration of the resulting precipitate provided the
acid as a white solid (9.0 g, 91%). MS cal'd for
C.sub.22H.sub.24NSO.sub.5=414.1375. Found=414.1389.
[0736] Part C: To a solution of the acid of part B (9.0 g, 19.5
mmol) was added 1-hydroxybenzotriazole (3.24 g, 23.9 mmol),
N-methylmorpholine (6.58 mL, 59.9 mmol),
O-tetrahydro-2H-pyran-yl-hydroxylamine (3.5 g, 29.9 mmol) followed
by 1-3-(dimethylamino)propyl]-3-ethylcarbodimmide hydrochloride
(5.35 g, 27.9 mmol). The solution was stirred at ambient
temperature for 18 hours. The solution was diluted with H.sub.2O
(400 mL) and extracted with ethyl acetate. The organic layer was
washed with saturated NaCl and dried over MgSO.sub.4.
Chromatography (on silica, eluting with 40% ethyl acetate/hexane)
provided the desired THP-protected hydroxamate as a solid (6.9 g,
67%). Analytical calculation for
C.sub.27H.sub.33N.sub.2SO.sub.6:0.1H.sub.2O: C, 62.92, H, 6.49, N,
5.43, S, 6.23. Found: C, 62.69, H, 6.47, N, 5.57, S, 6.33. Cal'd MS
for C.sub.27H.sub.33N.sub.2SO.sub.6: 513.2059. Found 513.2071.
[0737] Part D: To a solution of THP-protected hydroxamate of part C
(6.4 gm, 12.5 mmol) in dioxane (56 mL) and methanol (19 mL) was
added 4 N HCl/dioxane (40 mL). After stirring at ambient
temperature for 1 hours, the solution was concentrated in vacuo.
Trituration with ethyl ether provided the title compound as a white
solid (5.66 g, 97.4%). Cal'd MS for
C.sub.22H.sub.24N.sub.2SO.sub.5+1: 429.1484. Found M+1:
429.1493.
EXAMPLE 42
Preparation of
4-([4-(1,3-benzodioxol-5-yloxy)phenyl]sulfonyl]-N-hydroxy-1-(methylsulfon-
yl)-4-piperidinecarboxamide
[0738] ##STR3383##
[0739] Part A: To a solution of sulfone of part D, Example 32 (25
g, 67.3 mmol) in N,N-dimethylformamide was added potassium
carbonate (23.3 g, 0.169 mol) and sesamol (23.2 g, 0.164 mol). The
solution was submerged in an oil bath at 90.degree. C. and stirred
for 25 hours. Ethyl acetate was added to the solution, and the
organic phase was washed with water, 1N NaOH and water, dried over
magnesium sulfate, filtered and concentrated in vacuo.
Chromatography on silica, eluting with ethyl acetate/hexane (15/85)
provided the ethyl ester compound as an oil (29.3 g, 82%).
[0740] Part B: To a solution of ethyl ester from part A (29.3 gm,
54.93 mmol) in ethanol (60 mL) and tetrahydrofuran (60 mL) was
added a solution of NaOH (21.9 g, 0.549 mol) in water 120 mL) and
the solution was heated at 65 degrees Celsius for 10 hours. The
solution was concentrated in vacuo and the aqueous residue was
acidified to pH=3. The solution was extracted with ethyl acetate.
The solution was dried over magnesium sulfate, filtered and
concentrated in vacuo to give the acid as a yellow foam (25.6 g
92.16).
[0741] Part C: To a solution of the acid of Part B (20.3 g, 40.15
mmol) in ethyl acetate at zero degrees C. was bubbled gas HCl for
20 minutes. The solution stirred at Zero degrees Celsius for 1.5
hours. The precipitate formed was filtered and washed with ether to
give the amine hydrochloride as a white solid (16.0 g, 93.5%).
[0742] Part D: To a solution of amine hydrochloride of part C (7.5
g, 17.0 mmol) in methylene chloride (200 mL) was added
methanesulfonyl chloride (2.0 g, 25.0 mol) and the solution was
stirred at ambient temperature for 18 hours. The solution was
washed with water and saturated NaCl, dried over magnesium sulfate,
concentrated in vacuo to provide the acid as a white solid (6.97 g,
85%).
[0743] Part E: To a solution of the acid of part D (7.37 g, 15.0
mmol) was added 1-hydroxybenzotriazole (2.43 g, 18.0 mmol),
N-methylmorpholine (4.94 mL, 45.0 mmol),
.beta.-tetrahydro-2H-pyran-yl-hydroxylamine (2.65 g, 22.5 mmol)
followed by 1-3-(dimethylamino)propyl]-3-ethylcarbodimmide
hydrochloride (4.02 g, 21.0 mmol). The solution was stirred at
ambient temperature for 18 hours. The solution was diluted with
H.sub.2O (400 mL) and extracted with ethyl acetate. The organic
layer was washed with saturated NaCl and dried over MgSO.sub.4.
Chromatography (on silica, eluting with 50% ethyl acetate/hexane)
provided the desired THP-protected hydroxamate as a solid (7.54 g,
85%).
[0744] Part F: To a solution of THP-protected hydroxamate of part E
(6.32 gm, 10.8 mmol) in dioxane (75 mL) and methanol (25 mL) was
added 4 N HCl/dioxane (30 mL). After stirring at ambient
temperature for 1 hour, the solution was concentrated in vacuo.
Trituration with ethyl ether provided the title compound.
Chromatography (on silica, 5% methanol/ethyl acetate) provided the
hydroxamate as a white solid (4.32 g, 80%) Cal'd MS for
C.sub.22H.sub.22N.sub.2S.sub.2O.sub.9+1: 499.0845. Found
499.0848.
EXAMPLE 43
Preparation of
4-[[4-(3,4-Dimethylphenoxyl)phenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)-4-p-
iperidinecarboxamide, monhydrochloride
[0745] ##STR3384##
[0746] Part A: A mixture of the fluoro compound from part F,
Example 9 (2.0 g, 5.66 mmol), 3,4-dimethylphenol (2.0 g, 16.5
mmol), and potassium carbonate (2.3 g, 16.5 mmol) in
N,N-dimethylformamide (15 mL) was heated at 90 degrees Celsius
overnight (about 18 hours) under an atmosphere of nitrogen. The
brown mixture was concentrated in vacuo and purified by
chromatography (on silica, ethyl acetate/hexane) to afford the
3,4-dimethylphenoxy phenyl compound as a clear, yellow oil (2.0 g,
79% yield). Analytical calculation for C.sub.25H.sub.29NO.sub.5S:
C, 65.91; H, 6.42; N, 3.04; S, 7.04. Found: C, 65.76; H, 6.37; N,
3.03; S, 7.00.
[0747] Part B: A solution of the 3,4-dimethylphenoxy phenyl
compound of part A (2.0, 4.93 mmol) and potassium hydroxide (1.7 g,
29.7 mmol) in a mixture of ethanol (25 mL) and water (4 mL) was
stirred at reflux for four hours under a nitrogen atmosphere. The
solution was cooled with an ice bath, subsequently acidified with
concentrated hydrochloric acid, and concentrated to a crude
residue. The crude residue, O-tetrahydo-2H-pyran-2-yl-hydroxylamine
(0.88 g, 7.50 mmol), triethylamine (0.81 mL, 5.81 mmol), and
1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride in
acetonitrile (24 mL) was stirred at ambient temperature overnight.
The mixture was diluted with water and extracted with ethyl
acetate. The organic layer was washed with water, a saturated
sodium bicarbonate solution, water, and a saturated salt solution.
After drying over magnesium sulfate, the filtrate, as the
THP-protected hydroxamate, was concentrated to a yellow foam.
[0748] Part C: The THP-protected hydroxamate (920 mg, 1.75 mmol) of
part B was dissolved in methanol (16 mL). Acetyl chloride (0.37 mL,
5.3 mmol) was added. After three hours, concentration followed by
reverse phase HPLC afforded the title compound as a white solid
(611 mg, 79%). MS (EI) MH.sup.+ calculated for
C.sub.23H.sub.26N.sub.2O.sub.5S: 443, found 443.
EXAMPLE 44
Preparation of
4-[[4-(4-chlorophenyl)thio]phenyl)sulfonyl]-1-(propynyl)-4-piperidinecarb-
oxylic acid, monohydrochloride and
4-[[4-(4-chlorophenyl)thio]phenyl]sulfonyl]-N-hydroxy-1-(propynyl)-4-pipe-
ridinecarboxamide, monohydrochloride
[0749] ##STR3385##
[0750] Part A: A mixture of the fluoro compound from part F,
Example 9 (2.0 g, 5.66 mmol), 4-chlorothiophenol (1.0 g, 6.94
mmol), and potassium carbonate (1.1 g, 8.00 mmol) in
N,N-dimethylformamide (12 mL) was stirred overnight (about 18
hours) under an atmosphere of nitrogen at ambient temperature. The
mixture was concentrated in vacuo. The residue was diluted with
water and extracted with ethyl acetate. The organic layer was
washed with water and a saturated salt solution, dried over
magnesium sulfate, and concentrated in vacuo to a yellow oil. The
oil was purified by chromatography (on silica, ethyl
acetate/hexane) to afford the 4-chlorophenylthiolphenyl compound as
a white solid (2.0 g, 75% yield). Analytical calculation for
C.sub.23H.sub.24NO.sub.4S.sub.2C.sub.1: C, 57.791; H, 5.06; N,
2.93; S, 13.42; Cl, 7.42. Found: C, 57.57; H, 5.11; N, 2.94; S,
13.19; Cl, 7.73.
[0751] Part B: The chorophenylthiophenyl compound from part A (2.04
g, 4.27 mmol) was diluted with ethanol (30 mL) and water (5 mL).
Potassium hydroxide (1.55 g, 27.7 mmol) was added, and the mixture
was heated at reflux for 3 hours. After complete reaction, the
solution was cooled and was acidified to pH=1-3 with concentrated
HCl. The solvent was removed by rotary evaporation and the residue
was azeotroped to dryness by repeated addition of acetonitrile. The
acid hydrochloride was further dried on a vacuum line, then carried
as is through the coupling reaction. The saponification was
presumed to be quantitative.
[0752] Part C: The carboxylic acid hydrochloride from the previous
step (4.27 mmol) was suspended in acetonitrile (20 mL).
N-Methylmorpholine (about 1.0 mL) was added, followed by
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (585 mg, 5 mmol). After 5
minutes, 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (EDC; 955 mg, 5 mmol) was added. The mixture was
stirred overnight (about 18 hours), then solvent was removed by
rotary evaporation, the residue was diluted with half-saturated
NaHCO.sub.3 solution (50 mL), and the product was extracted into
ethyl acetate (2.times.100 mL). In this example, an intractable
emulsion complicated compound recovery. The combined organic layers
were dried over MgSO.sub.4, filtered through silica, concentrated,
and subjected to chromatography (flash silica, ethyl
acetate/hexane) affording, on concentration, the title
O-THP-protected hydroxamate (162 mg, 7%, from ester) as a foam. MS
(EI) MH.sup.+ calculated for
C.sub.21H.sub.22N.sub.2O.sub.4S.sub.2Cl: 450, found 450. Because
mass recovery was poor, the silica filter cake was extracted with
1:1 methanol:ethyl actetate affording
4-[[4-(4-chlorophenyl)thio]phenyl]sulfonyl]-1-(propynyl)-4-piperidinecarb-
oxylic acid, monohydrochloride (540 mg, 26%).
[0753] Part D: The O-THP-protected hydroxamate of part C (441 mg,
0.80 mmol) was dissolved in methanol (2 mL). Acetyl chloride (0.2
mL, 3 mmol) was added. After three hours, concentration followed by
reverse phase HPLC afforded the title hydroxamate compound as a
pink solid (162 mg, 44%). MS (EI) MH.sup.+ calculated for
C.sub.21H.sub.22N.sub.2O.sub.4S.sub.2: 465, found 465.
EXAMPLE 45
Preparation of
4-[[4-(Cyclopentylthio)-phenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)-4-piper-
idinecarboxamide, monohydrochloride
[0754] ##STR3386##
[0755] Part A: The propargyl amine of part F, Example 9 (3.05 g,
8.5 mmol) was combined with K.sub.2CO.sub.3 (1.38 g, 10 mmol),
N,N-dimethylformamide (6 mL) and cyclopentyl mercaptan (1.02 mL, 10
mmol). The mixture was heated to 80 degrees Celsius for 4 hours and
95 degrees Celsius for 2.5 hours, monitoring by TLC. Aqueous workup
was accomplished using water (10 mL) and ethyl acetate (2.times.100
mL). The combined organic layers were dried over magnesium sulfate,
concentrated, and chromatographed (flash silica; ethyl
acetate/hexane eluant) affording the cyclopentylmercaptyl compound
as an oil (3.2 g, 86%).
[0756] Part B: The cyclopentylmercaptyl compound from part A (3.12
g 7.13 mmol) was diluted with ethanol (50 mL) and water (8 mL).
Potassium hydroxide (2.59 g, 46.3 mmol) was added, and the mixture
was heated at reflux for 3.5 hours. After complete reaction, the
solution was cooled and was acidified to pH=1-3 with concentrated
HCl. The solvent was removed by rotary evaporation and the residue
was azeotroped to dryness by repeated addition of acetonitrile. The
carboxylic acid hydrochloride was further dried on a vacuum line,
then carried as is through the coupling reaction. The
saponification was presumed to be quantitative.
[0757] Part C: The carboxylic acid hydrochloride from Part B (7.13
mmol) was suspended in acetonitrile (50 mL). N-Methylmorpholine
(ca. 2.0 mL) was added, followed by
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (1.05 g, 9 mmol). After 5
minutes, EDC (1.72 g, 9 mmol) was added. The mixture was stirred
overnight (about 18 hours), then solvent was removed by rotary
evaporation. The residue was diluted with half-saturated
NaHCO.sub.3 solution (50 mL), and the product was extracted into
ethyl acetate (2.times.100 mL). The combined organic layers were
dried over MgSO.sub.4, filtered through silica, concentrated, and
subjected to chromatography (flash siilca, ethyl acetate/hexane)
affording, on concentration, the O-THP-protected hydroxamate (2.0
g, 51%, from ester) as a foam.
[0758] Part D: The O-THP-protected hydroxamate from Part D (2.00 g,
3.95 mmol) was dissolved in methanol (16 mL). Acetyl chloride (0.86
mL, 12 mmol) was added over 2 minutes. The reaction was stirred at
ambient temperature for 4 hours, then concentrated, with repeated
addition of chloroform and acetonitrile to effect drying. The title
compound precipitated as a white solid (1.77 g, 98%). MS (EI)
MH.sup.+ calculated for C.sub.20H.sub.26N.sub.2O.sub.4S.sub.2: 422,
found 422.
EXAMPLE 47
Preparation of
N-hydroxy-4-[[4-(phenylthio)phenyl]sulfonyl]-1-(2-propynyl)-4-piperidinec-
arboxamide, 1-oxide and
N-hydroxy-4-[[4-(phenylsulfinyl)-phenyl]sulfonyl-1-(2-propynyl)-4-piperid-
inecarboxamide
[0759] ##STR3387##
[0760] m-Chloroperbenzoic acid (57-86%, 120 mg) was added to a
solution of
N-hydroxy-4-[[4-(phenylthio)phenyl]-sulfonyl]-1-(2-propynyl)-4-piperid-
inecarboxamide (title compound, Example 9)(215 mg, 0.5 mmol) in
methanol (5 mL) at zero degrees Celsius. The reaction was permitted
to warm slowly to ambient temperature and after 16 hours, the
mixture was passed through a micron filter and concentrated.
Reverse phase HPLC (Delta Pak 50.times.300 mm; 15 micron C.sub.18
100 Angstrom; 30 minute gradient method starting with dilute HCl
(0.5 mL/4 L): acetonitrile 80:20, ending with 50:50) separated 5
major components. The first and second peaks off the column
afforded, upon concentration, 14 (6%) and 16 mg (7%) of two
compounds, which were assigned as diastereomers of
N-Hydroxy-4-[[4-(phenylsulfinyl)-phenyl]sulfonyl-1-(2-propynyl)-4-piperid-
inecarboxamide on the basis of their NMR spectra. The third peak
was unidentified. The 4th peak was assigned by NMR as
N-hydroxy-4-[f4-(phenylthio)phenyl]sulfonyl]-1-(2-propynyl)-4-piperidinec-
arboxamide, 1-oxide (147 mg, 66%) MS (EI) MH.sup.+ calculated for
C.sub.21H.sub.22N.sub.2O.sub.5S.sub.2: 447, found 447. The last
peak contained 73 mg of recovered 3-chlorobenzoic acid.
EXAMPLE 48
Preparation of
N-hydroxy-2,2-dimethyl-5-[(4-phenoxyphenyl)sulfonyl]-1,3-dioxane-4-carbox-
amide
[0761] ##STR3388##
[0762] Part A: A fresh sodium methoxide solution was prepared by
slowly adding hexane-washed sodium spheres (9.4 g, 410 mmol) to
methanol (1.0 L) at zero degrees Celcius. To this cooled solution
was added the 4-fluorothiophenol (50.0 g, 390 mmol) followed by
methyl 2-chloro acetate (42.3 g, 390 mmol). After warming to
ambient temperature the reaction was stirred overnight (about 18
hours). The methanol was removed in vacuo and the residue was taken
up in ethyl acetate (300 mL). The organic layer was washed with
water (2.times.-200 mL) and dried over MgSO.sub.4. Concentrating
afforded the methyl ester sulfide product as a clear oil (71.8 g,
92%).
[0763] Part B: To a solution of the methyl ester sulfide product of
part A (71.8 g, 358 mmol) in 70% methanol/H.sub.2O (1.0 L) was
slowly added Oxone.TM. (660 g, 1.08 mol). The mixture stirred
overnight (about 18 hours) at ambient temperature. The excess
Oxone.TM. was filtered off and the methanol was removed from the
filtrate in vacuo. The remaining aqueous solution was extracted
with ethyl acetate (3.times.300 mL). The organic layers were washed
with water (2.times.-300 mL) and dried over MgSO.sub.4.
Concentrating afforded the sulfone product as a tan oil (82 g,
98%).
[0764] Part C: To a prepared slurry of potassium bicarbonate (1.0
g, 9.8 mmol) in 37% formaldehyde solution was added the sulfone
product of part B (28.6 g, 123 mmol). The reaction was stirred for
one hour and then a saturated solution of sodium sulfate (20 mL)
was added. After stirring for thirty minutes, the mixture was
extracted with diethyl ether (4.times.-100 mL). The organic layers
were dried over MgSO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the sulfone diol product as a clear oil
(15.3 g, 42%).
[0765] Part D: The sulfone diol product of Part C (1.3 g, 4.5 mmol)
was dissolved in acetone (40 mL) along with 2,2-dimethoxypropane
(1.1 mL, 9.0 mmol) and p-toluenesulfonic acid monohydrate (0.03 mg,
0.14 mmol) and the resulting composition was refluxed for 6 hours.
After cooling, the mixture was neutralized with solid
Na.sub.2CO.sub.3 (pH-7), filtered, and concentrated. The residue
was dissolved in chloroform (50 mL) and washed with water
(2.times.-30 mL). Drying over MgSO.sub.4 and concentrating gave the
dimethyl ketal product as an opaque oil (1.4 g, 94%).
[0766] Part E: Phenol (0.6 g, 6.3 mmol) and cesium carbonate (2.0
g, 6.3 mmol) were added to a solution of the dimethyl ketal product
(1.4 g, 4.2 mmol) of part D in N,N-dimethylformamide (20 mL). The
mixture was heated at 90 degrees Celsius for five hours, diluted
with water (20 mL), and extracted with ethyl acetate (4.times.-100
mL). The organic layers were washed with brine (1.times.-100 mL)
and water (1.times.-100 mL). Concentrating afforded the
phenol-O-phenol dimethyl ketal as a dark brown oil (1.51 g,
88%).
[0767] Part F: To a solution of the phenol-O-phenol dimethyl ketal
product (1.5 g, 3.4 mmol) of part E in tetrahydrofuran (10 mL) was
added an aqueous lithium hydroxide solution (0.34 g, 14.8 mmol, in
5 mL of H.sub.2O). The reaction was stirred for two hours and then
was diluted with water (15 mL) and acidified via 30% HCl.sub.aq to
pH=3. The acidic solution was extracted with diethyl ether
(3.times.-100 mL). Drying over MgSO.sub.4 and concentrating
afforded the carboxylic acid product as a brown oil (1.5 g,
quantitative yield).
[0768] Part G: To a solution of the carboxylic acid product of Part
F (1.3 g, 3.3 mmol) and N-hydroxybenzotriazole hydrate (0.54 g, 4.0
mmol) in DMF (15 mL) was added 4-methylmorpholine (1.67 g, 16.5
mmol), O-tetrahrdro-2H-pyran-2-yl-hydroxylamine (1.2 g, 10.2 mmol),
and EDC (0.88 g, 4.6 mmol), respectively. After stirring overnight,
the DMF was removed in vacuo and the residue was taken up in ethyl
acetate/water (1:1, 50 mL). The organic layer was washed with brine
(1.times.-20 mL) and water (1.times.-20 mL) and dried over
MgSO.sub.4. Chromatography (on silica, ethyl acetate/hexane)
provided the THP-protected hydroxylamine product as a white solid
(0.36 g, 22%) as well as the decarboxylated by-product (0.27 g,
24%).
[0769] Part H: To a solution of the THP-protected hydroxylamine
product of Part G (0.36 g, 0.73 mmol) in dioxane (3 mL) and
methanol (1 mL) was added 4 N HCl in dioxane (2 mL). The reaction
was stirred for five minutes and then the solvents were removed in
vacuo. Chromatography (reverse phase C-18, acetonitrile/water) gave
the title compound as a white solid (0.13 g, 44%). MS (FAB)
M.sup.+H calculated for C.sub.19H.sub.21NO.sub.7S: 408, found
408.
EXAMPLE 49
Preparation of
tetrahydro-N-hydroxy-4-[[4-(phenylthio)phenyl]sulfonyl]-2H-thiopyran-4-ca-
rboxamide
[0770] ##STR3389##
[0771] Part A: To a solution of methyl 2-chloroacetate (322 g, 2.96
mol) in N,N-dimethylacetamide (1.0 L) were added thiophenol (400 g,
3.12 mol) and potassium carbonate (408 g, 2.96 mol). The reaction
was stirred at ambient temperature overnight (about 18 hours).
After diluting with a minimal amount of water (800 mL), the mixture
was extracted with ethyl acetate (4.times.-1 L). The organic layers
were washed with water (1.times.-800 mL), dried over MgSO.sub.4,
and concentrated to afford the sulfide product as a clear oil (614
g, quantitative yield).
[0772] Part B: To a solution of the sulfide from part A (75.85 g,
0.38 mol) in methanol (1000 mL) was added water (100 mL) and
Oxone.RTM. (720 g, 1.17 mol) at twenty degrees Celsius. An exotherm
to 67 degrees Celsius was noted. After two hours, the reaction was
filtered and the cake washed well with methanol. The filtrate was
concentrated in vacuo. The residue was taken up in ethyl acetate
and washed with brine, dried over MgSO.sub.4, filtered, and
concentrated in vacuo to give the sulfone as a crystalline solid
(82.74 g, 94%).
[0773] Part C: To a solution of the sulfone of part B (60.0 g, 258
mmol) in DMA (350 mL) was added the dibromoethylthioether (76.9 g,
310 mmol), followed by potassium carbonate (78.3 g, 568 mmol). The
mixture was stirred five minutes before adding catalytic amounts of
4-dimethylaminopyridine and tetrabutylammonium bromide. The
reaction was stirred overnight (about 18 hours), after which it was
poured into a stirring solution of 10% HCl.sub.aq (2.5 L). The
resulting precipitate was filtered and washed with hexane to remove
the excess thioether. Drying in vacuo overnight (about 18 hours)
yielded the methylester thiopyran-Ph-p-F as a yellow powder (76.1
g, 93%).
[0774] Step D: To a solution of the methylester thiopyran-Ph-p-F of
part C (4.0 g, 12.6 mmol) in N,N-dimethylacetamide (25 mL) were
added cesium carbonate (6.1 g, 18.9 mmol) and thiophenol (2.1 g,
18.9 mmol). The mixture was stirred 2 hours at 90 degrees Celsius.
The mixture was diluted with water (30 mL) and extracted with ethyl
acetate (3.times.-100 mL). The organic layers were washed with
brine (1.times.-75 mL) and water (1.times.-75 mL) and was then
dried over MgSO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the phenyl-5-phenyl methyl ester as a
yellowish solid (3.6 g, 71%).
[0775] Step E: Potassium trimethylsilonate (1.24 g, 9.7 mmol) was
added to a solution of the phenyl-S-phenyl methyl ester of part D
(3.6 g, 8.8 mmol) in tetrahydrofuran (15 mL). The mixture was
stirred 2-3 hours at ambient temperature or until a solid
precipitate developed. After the hydrolysis was complete,
N-methylmorpholine (2.9 mL, 26.4 mmol) was added followed by PyBrop
(4.9 g, 10.6 mmol). The solution was stirred for 10 minutes.
Aqueous hydroxylamine (0.32 g, 9.7 mmol) was added and the mixture
stirred for an additional 2 hours. After completion, the solvent
was removed in vacuo. Chromatography (reverse phase C-18,
acetonitrile/water) of the residue provided the title compound as
an off white solid (0.82 g, 23%). MS (FAB) M.sup.+H calculated for
C.sub.18H.sub.19NO.sub.4S.sub.3: 410, found 410.
EXAMPLE 50
Preparation of
4-[(4-fluorophenyl)-sulfonyl]tetrahydro-N-[(tetrahydro-2H-pyran-2-yl)oxy]-
-2H-thiopyran-4-carboxamide
[0776] ##STR3390##
[0777] Part A: Thiophenol (400 g, 3.12 mol) and potassium carbonate
(408 g, 2.96 mol) were added to a solution of methyl
2-chloroacetate (322 g, 2.96 mol) in N,N-dimethylacetamide (1.0 L).
The reaction was stirred at ambient temperature overnight (about 18
hours). After diluting with a minimal amount of water (800 mL), the
mixture was extracted with ethyl acetate (4.times.-1 L). The
organic layers were washed with water (1.times.-800 mL), dried over
MgSO.sub.4, and concentrated to afford the sulfide product as a
clear oil (614 g, quantitative yield).
[0778] Part B: To a solution of the sulfide from part A (75.85 g,
0.38 mol) in methanol (1000 mL) was added water (100 mL) and
Oxone.RTM. (720 g, 1.17 mol) at 20 degrees Celsius. An exotherm to
67 degrees Celsius was noted. After two hours, the reaction was
filtered and the cake was washed well with methanol. The filtrate
was concentrated in vacuo. The residue was taken up in ethyl
acetate and washed with brine, dried over MgSO.sub.4, filtered, and
concentrated in vacuo to give the methyl ester sulfone as a
crystalline solid (82.74 g, 94%).
[0779] Part C: To a solution of the methyl ester sulfone product of
part B (60.0 g, 258 mmol) in N,N-dimethylacetamide (350 mL) was
added 2,2-dibromoethylthioether (76.9 g, 310 mmol) followed by
potassium carbonate (78.3 g, 568 mmol). The mixture was stirred
five minutes before adding catalytic amounts of
4-dimethylaminopyridine and tetrabutylammonium bromide. The
reaction was stirred overnight (about 18 hours), after which it was
poured into a stirring solution of 10% HCl.sub.aq (2.5 L). The
resulting precipitate was filtered and washed with hexane to remove
the excess thioether. Drying in vacuo overnight (about 18 hours)
yielded the thiopyran methyl ester as a yellow powder (76.1 g,
93%).
[0780] Step D: To a solution of the thiopyran methyl ester of part
C (30.0 g, 94 mmol) in tetrahydrofuran (250 mL) was added potassium
trimethylsilonate (28.9 g, 226 mmol). The mixture was stirred 2-3
hours at ambient temperature or until a solid precipitate
developed. After the hydrolysis was complete, the solvent was
removed in vacuo. Water (200 mL) was added and the mixture was
washed with diethyl ether (1.times.-200 mL). The aqueous layer was
cooled to zero degrees Celsius and 10% HCl aq was slowly added
until a precipitate formed. The solid was collected and dried in
vacuo with phosphorous pentoxide to afford the thiopyran carboxylic
acid as a yellow solid (17.8 g, 62%).
[0781] Part E: To a solution of the thiopyran carboxylic acid of
part D (17.8 g, 58.5 mmol) in N,N-dimethylformamide (100 mL) was
added N-methylmorpholine (19.3 mL, 176 mmol) followed by
N-hydroxybenzotriazole hydrate (9.5 g, 70.2 mmol),
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (10.3 g, 87.8 mmol), and
1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (16.8
g, 87.8 mmol). The mixture was stirred three hours and was then
diluted with water (100 mL). The mixture was extracted with ethyl
acetate (4.times.-200 mL). Organic layers were washed with an
aqueous saturated potassium carbonate solution (1.times.-200 mL),
1% HCl.sub.aq, and brine (1 x-200 mL). Drying over MgSO.sub.4 and
concentrating in vacuo afforded the title compound as an off white
solid (30.8 g, quantitative yield). MS (FAB) M.sup.+H calculated
for C.sub.17H.sub.22FNO.sub.5S.sub.2: 404, found 404.
EXAMPLE 51
Preparation of
Tetrahydro-N-hydroxy-4-[[4-[(4-methoxypheny)thio]phenyl]sulfonyl]-2H-thio-
pyran-4-carboxamide
[0782] ##STR3391##
[0783] Part A: To a solution of the title compound of Example 50
(6.0 g, 14.9 mmol) in N,N-dimethylacetamide (25 mL) was added
4-methoxy thiophenol (2.5 g, 17.8 mL), followed by potassium
carbonate (6.2 g, 44.7 mmol). The reaction was heated at 60 degrees
Celsius for three hours. The reaction mixture was diluted with
water (25 mL) and extracted with ethyl acetate (4.times.-100 mL).
The organic layers were washed with water (2.times.-50 mL) and
dried over MgSO.sub.4. Concentrating in vacuo provided the
THP-protected-Phenyl-S-pPhenyl-OMe product as a yellowish solid
(9.2 g, quantitative yield).
[0784] Part B: To a solution of the
THP-protected-Phenyl-S-pPhenyl-OMe product from part A (9.2 g, 14.9
mmol) in dioxane was slowly added 4N HCl in dioxane (10 mL). After
stirring overnight (about 18 hours), the solvent was removed.
Chromatography on the resultant residue (reverse phase C-18,
acetonitrile/water) gave the title compound as a white solid (1.84
g, 28.3%). MS (FAB) M+H calculated for
C.sub.19H.sub.21NO.sub.5S.sub.3: 440, found 440.
EXAMPLE 52
Preparation of
Tetrahydro-N-hydroxy-4-[(4-phenylthio)phenyl]sulfonyl]-2H-thiopyran-4-car-
boxamide 1.1-dioxide
[0785] ##STR3392##
[0786] Part A: To a solution of the title compound of Example 50
(13.0 g, 24.5 mmol) in methylene chloride (100 mL) cooled to zero
degrees Celsius was slowly added 50-60% m-chloroperbenzoic acid
(17.1 g, 49.5 mmol). The mixture was stirred one hour at zero
degrees Celsius followed by an additional 3 hours as the
temperature rose to ambient conditions. Water (200 mL) was added
and the mixture was neutralized with 10% ammonium hydroxide (100
mL). The organic layer was washed with water (1.times.-200 mL) and
dried over. MgSO.sub.4. Concentrating in vacuo provided an orangish
oil (3.5 g, 33%). The water/10% ammonium hydroxide solution was
saturated with sodium chloride and extracted with ethyl acetate
(2.times.-400 mL). Organic layer was dried over MgSO.sub.4 and
concentrated to afford the THP-protected sulfone-thiopyran-p-F
compound as an orange foam (6.1 g, 57%).
[0787] Part B: To a solution of the THP-protected
sulfone-thiopyran-p-F from Part A (9.6 g, 22 mmol) in
N,N-diemthylacetamide (120 mL) was added thiophenol (2.9 g, 26.4
mL), followed by potassium carbonate (9.1 g, 66 mmol). The reaction
was heated at 60 degrees Celsius for four hours. The reaction
mixture was diluted with water (25 mL) and extracted with ethyl
acetate (4.times.-100 mL). The organic layers were washed with
water (2.times.-50 mL) and dried over MgSO.sub.4. Chromatography
(on silica, ethyl acetate/hexane) provided the
THP-protected-phenyl-5-phenyl product as an orange oil (5.1 g,
43%).
[0788] Part C: To a solution of the THP-protecte-phenyl-S-phenyl
product from part B (5.1 g, 9.4 mmol) in dioxane was slowly added
4N HCl in dioxane (10 mL). After stirring overnight (about 18
hours), the solvent was removed. Chromatography of the resultant
residue (reverse phase C-18, acetonitrile/water) gave the title
compound as a pink solid (1.2 g, 29%). MS (FAB) M+H calculated for
C.sub.18H.sub.19NO.sub.6S.sub.3: 442, found 442.
EXAMPLE 53
Preparation of
Tetrahydro-N-hydroxy-4-[[4-[4-(1H-1,2,4-triazol-1-yl)
phenoxy]-phenyl]-sulfonyl]-2H-thiopyran-4-carboxamide 1,1-dioxide,
monohydrochloride
[0789] ##STR3393##
[0790] Part A: To a solution of the title compound of Example 50
(13.0 g, 24.5 mmol) in methylene chloride (100 mL) cooled to zero
degrees Celsius was slowly added 50-60% m-chloroperbenzoic acid
(17.1 g, 49.5 mmol). The mixture was stirred one hour at zero
degrees Celsius followed by an additional 3 hours as the
temperature rose to ambient conditions. Water (200 mL) was added
and the mixture was neutralized with 10% ammonium hydroxide (100
mL). The organic layer was washed with water (1.times.-200 mL) and
dried over MgSO.sub.4. Concentrating in vacuo provided an orangish
oil (3.5 g, 33%). The water/10% ammonium hydroxide solution was
saturated with sodium chloride and extracted with ethyl acetate
(2.times.-400 mL). Organic layer was dried over MgSO.sub.4 and
concentrated to afford the THP-protected sulfone-thiopyran-p-F as
an orange foam (6.1 g, 57%).
[0791] Part B: To a solution of the THP-protected
sulfone-thiopyran-p-F from A (6.0 g, 13.8 mmol) in
N,N-dimethylformamide (25 mL) was added
4-(1H-1,2,4-triazol-1-yl)phenol (4.4 g, 27.5 mmol), followed by
cesium carbonate (13.4 g, 41.4 mmol). The reaction was heated at 95
degrees Celsius for five hours. The reaction mixture was diluted
with water (25 mL) and extracted with ethyl acetate (4.times.-100
mL). The organic layers were washed with water (2.times.-50 mL) and
dried over MgSO.sub.4. Concentrating afforded the THP-protected
phenyl-O-phenyl triazole product as a tan solid (9.7 g,
quantitative yield).
[0792] Part C: To a solution of the crude THP-protected
phenyl-O-phenyl triazole product from B (8.0 g, 13.8 mmol) in
acetonitrile (40 mL) was slowly added 10% HCl.sub.aq (100 mL).
After stirring overnight (about 18 hours), the acetonitrile was
removed. The resultant precipitate was collected, giving the title
compound as a tan solid (1.3 g, 18%). MS (FAB) M.sup.+H calculated
for C.sub.20H.sub.21ClN.sub.4O.sub.7S.sub.2: 493, found 493.
EXAMPLE 54
Preparation of
4-[[4-[4-(2-aminoethyl))-phenoxy]phenyl]sulfonyl]tetrahydro-N-hydroxy-2H--
thiopyran-4-carboxamide 1,1-dioxide monohydrochloride
[0793] ##STR3394##
[0794] Part A: To a solution of the title compound of Example 50
(13.0 g, 24.5 mmol) in methylene chloride (100 mL) cooled to zero
degrees Celsius was slowly added 50-60% m-chloroperbenzoic acid
(17.1 g, 49.5 mmol). The mixture was stirred one hour at zero
degrees Celsius followed by an additional 3 hours as the
temperature rose to ambient conditions. Water (200 mL) was added
and the mixture was neutralized with 10% ammonium hydroxide (100
mL). The organic layer was washed with water (1.times.-200 mL) and
dried over MgSO.sub.4. Concentrating in vacuo provided an orangish
oil (3.5 g, 33%). The water/10% ammonium hydroxide solution was
saturated with sodium chloride and extracted with ethyl acetate
(2.times.-400 mL). The organic layer was dried over MgSO.sub.4 and
concentrated to afford the THP-protected sulfone-thiopyran-p-F as
an orange foam (6.1 g, 57%).
[0795] Part B: To a solution of the THP-protected
sulfone-thiopyran-p-F from A (6.0 g, 13.8 mmol) in
N,N-dimethylacetamide (25 mL) was added tyramine (3.8 g, 28 mmol)
followed by cesium carbonate (13.6 g, 42 mmol). The reaction was
heated at 95 degrees Celsius for five hours. Removing the
N,N-dimethylacetamide in vacuo afforded a brown solid (20 g).
Chromatography (reverse phase, C-18, acetonitrile/water) gave the
THP-protected tyramine product as a tan oil (1.0 g, 13%).
[0796] Part C: To a solution of the crude THP-protected tyramine
product from part B (1.0 g, 1.8 mmol) in acetonitrile (40 mL) was
slowly added 10% HCl.sub.aq (100 mL). After stirring overnight
(about 18 hours), the acetonitrile was removed. The resultant
precipitate was collected, giving the title compound as a tan solid
(0.9 g, 99%). MS (FAB) M+H calculated for
C.sub.20H.sub.25ClN.sub.2O.sub.7S.sub.2: 469, found 469.
EXAMPLE 55
Preparation of
4-[(4-fluorophenyl)-sulfonyl]tetrahydro-N-[(tetrahydro-2H-pyran-2-yl)oxy]-
-2H-pyran-4-carboxamide
[0797] ##STR3395##
[0798] Part A: In dry equipment under nitrogen, sodium metal (8.97
g, 0.39 mol) was added to methanol (1000 mL) at two degrees
Celsius. The reaction was stirred at ambient temperature for forty
five minutes at which time the sodium had dissolved. The solution
was chilled to five degrees Celsius and p-fluorothiophenol (41.55
mL, 0.39 mmol) was added, followed by methyl 2-chloroacetate (34.2
mL, 0.39 mol). The reaction was stirred at ambient temperature for
four hours, filtered, and concentrated in vacuo to give the sulfide
as a clear colorless oil (75.85 g, 97%).
[0799] Part B: To a solution of the sulfide from part A (75.85 g,
0.38 mol) in methanol (1000 mL) were added water (100 mL) and
Oxone.RTM. (720 g, 1.17 mol) at 20 degrees Celsius. An exotherm to
67 degrees Celsius was noted. After two hours, the reaction was
filtered and the cake was washed well with methanol. The filtrate
was concentrated in vacuo. The residue was taken up in ethyl
acetate and washed with brine, dried over MgSO.sub.4, filtered, and
concentrated in vacuo to give the sulfone as a crystalline solid
(82.74 g, 94%).
[0800] Part C: To a solution of the sulfone from part B (28.5 g,
0.123 mol) in N,N-dimethylacetamide (200 mL) were added potassium
carbonate (37.3 g, 0.27 mol), bis-(2-bromoethyl)ether (19.3 mL,
0.147 mol), 4-dimethylaminopyridine (0.75 g, 6 mmol), and
tetrabutylammonium bromide (1.98 g, 6 mmol). The reaction was
stirred overnight (about 18 hours) at ambient temperature. The
reaction was slowly poured into 1N HCl (300 mL), the resultant
solid filtered and the cake washed well with hexanes. The solid was
recrystallized from ethyl acetate/hexanes to give the pyran
compound as a beige solid (28.74 g, 77%). MS (ES+) MH+ calculated
for C.sub.13H.sub.15O.sub.5S.sub.1F.sub.1: 303, found 303.
[0801] Part D: In dry equipment under nitrogen, the pyran compound
from part C (8.0 g, 26.5 mmol) was dissolved in dry tetrahydrofuran
(250 mL) and a solution of potassium trimethylsilonate (10.2 g,
79.5 mmol) in dry tetrahydrofuran (15 mL) was added at ambient
temperature. After ninety minutes, water (100 mL) was added and the
solution concentrated in vacuo. The residue was taken up in water
and extracted with ethyl acetate to remove unreacted starting
material. The aqueous solution was treated with 6N HCl until pH=1.
The slurry was extracted with ethyl acetate and the combined
extracts washed with water, dried over Na.sub.2SO.sub.4, filtered,
and concentrated in vacuo. The residue was heated in diethyl ether,
the solid filtered and dried to give the carboxylic acid as a
crystalline solid (5.78 g, 76%). HRMS (ES-) M-H calculated for
C.sub.12H.sub.13O.sub.5S.sub.1F.sub.1: 287.04, found 287.04.
[0802] Part E: In dry equipment under nitrogen, the carboxylic acid
from part D (9.1 g, 31.6 mmol) was dissolved in dry
N,N-dimethylformamide (70 mL) and the remaining reagents were added
to the solution in the following order: N-hydroxybenzotriazole
hydrate (5.1 g, 37.9 mmol), N-methylmorpholine (10.4 mL, 94.8
mmol), O-tetrahydro-2H-pyran-2-yl-hydroxylamine (11.5 g, 98 mmol),
and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride
(8.48 g, 44.2 mmol). After three hours at ambient temperature, the
reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with water, 5% KHSO.sub.4, saturated
NaHCO.sub.3, brine, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. Chromatography (on silica, ethyl
acetate/hexanes) provided the title compound as a crystalline solid
(9.7 g, 80%). HRMS (ES+) MH+ calculated for
C.sub.17H.sub.22NO.sub.6S.sub.1F.sub.1: 388.12, found 388.12.
EXAMPLE 56
Preparation of
4-[[4-(3,4-difluorophenoxy)-phenyl]sulfonyl]tetrahydro-N-hydroxy-2H-pyran-
-4-carboxamide
[0803] ##STR3396##
[0804] Part A: To a solution of the title compound of Example 55
(2.0 g, 5.2 mmol) in N,N-dimethylacetamide (6 mL) was added
3,4-difluorophenol (1.0 g, 7.7 mmol), followed by cesium carbonate
(6.6 g, 20.2 mmol). The reaction was heated at 95 degrees Celsius
for five hours. Removing the N,N-dimethylacetamide in vacuo
afforded a brown solid (8.3 g, quantitative). Chromatography
(reverse phase, C-18, acetonitrile/water) gave the THP-protected
difluoro product in solution.
[0805] Part B: To the collected THP-protected difluoro product from
A in acetonitrile/water (50 mL) was slowly added 10% HCl.sub.aq
(100 mL). After stirring overnight (about 18 hours), the
acetonitrile was removed. The resultant precipitate was collected,
giving the title compound as a white solid (1.02 g, 48.6%). MS
(FAB) M.sup.+H calculated for C.sub.18H.sub.17FNO.sub.6S: 414,
found 414.
EXAMPLE 57
Prepartion of
Tetrahydro-N-hydroxy-4-[[4-(4-iodophenoxy)phenyl]sulfonyl]-2H-pyran-4-car-
boxamide
[0806] ##STR3397##
[0807] Part A: To a solution of the title compound of Example 55
(2.0 g, 5.2 mmol) in N,N-dimethylacetamide (6 mL) was added
4-iodophenol (1.7 g, 7.8 mmol), followed by cesium carbonate (6.6
g, 20.2 mmol). The reaction was heated at 95 degrees Celsius for
five hours. Removing the N,N-dimethylacetamide in vacuo afforded a
brown solid (5.7 g, quantitative) Chromatography (reverse phase,
C-18, acetonitrile/water) gave the THP-protected iodo product in
solution.
[0808] Part B: To the solution of the crude THP-protected iodo
product from A in acetonitrile/water (40 mL) was slowly added 10%
HCl.sub.aq (100 mL). After stirring overnight (about 18 hours), the
acetonitrile was removed. The resultant precipitate was collected,
giving the title compound as a white solid (2.6 g, 99%). MS (FAB)
M.sup.+H calculated for C.sub.18H.sub.18INO.sub.6S: 504, found
504.
EXAMPLE 58
Preparation of
Tetrahydro-N-hydroxy-4-[[4-(2,4,5-trifluorophenoxy)phenyl]-sulfonyl]-2H-p-
yran-4-carboxamide
[0809] ##STR3398##
[0810] Part A: To a solution of the title compound of Example 55
(2.0 g, 5.2 mmol) in N,N-dimethylacetamide (6 mL) was added
2,4,5-trifluorophenol (1.2 g, 7.8 mmol), followed by cesium
carbonate (10.1 g, 31.0 mmol). The reaction was heated at 95
degrees Celsius for thirty-two hours. Removinging the
N,N-dimethylacetamide in vacuo afforded a brown solid (5.7 g,
quantitative). Chromatography (reverse phase, C-18,
acetonitrile/water) gave the THP-protected phenol product (1.2 g,
44%).
[0811] Part B: To the solution of the crude THP-protected phenol
product from Part A (1.2 g, 2.3 mmol) in acetonitrile/water (40 mL)
was slowly added 10% HCl.sub.aq (100 mL). After stirring overnight
(about 18 hours), the acetonitrile was removed. The resultant
precipitate was collected, giving the title compound as a white
solid (0.79 g, 79%). MS (FAB) M.sup.-H calculated for
C.sub.18H.sub.16F.sub.3NO.sub.6S: 430, found 430.
EXAMPLE 59
Preparation of
4-[[4-(3,5-dichlorophenoxy)-phenyl]sulfonyl]-tetrahydro-N-hydroxy-2H-pyra-
n-4-carboxamide
[0812] ##STR3399##
[0813] Part A: To a solution of the title compound of Example 55
(2.0 g, 5.2 mmol) in N,N-dimethylacetamide (6 mL) was added
3,5-dichlorophenol (1.3 g, 7.8 mmol), followed by cesium carbonate
(6.6 g, 20.2 mmol). The reaction was heated at 95 degrees Celsius
for twelve hours. Removing the N,N-dimethylacetamide in vacuo
afforded a brown solid (5.7 g, quantitative). The residue was taken
up in acetonitrile/water (20 mL) and acidified to pH=6. A white
precipitate formed and was collected affording the THP-protected
product as a white cake (1.8 g, 64%).
[0814] Part B: To the THP-protected product from Part A (1.8 g, 3.4
mmol) in acetonitrile/water (20 mL) was slowly added 10% HCl.sub.aq
(40 mL). After stirring overnight (about 18 hours), the
acetonitrile was removed. The resultant precipitate was collected,
giving the title compound as a white solid (0.71 g, 47%). MS (FAB)
M+H calculated for C.sub.18H.sub.17Cl.sub.2NO.sub.6S: 447, found
447.
EXAMPLE 59
Preparation of
Tetrahydro-N-hydroxy-4-[[4-[[5-(trifluoromethyl)-2-pyridinyl]-thio]phenyl-
]sulfonyl]-2H-pyran-4-carboxamide monohydrochloride
[0815] ##STR3400##
[0816] Part A: To a solution of the title compound of Example 55
(2.0 g, 5.2 mmol) in N,N-dimethylacetamide (6 mL) was added
S-(trifluoromethyl)-2-pyridinyl thiophenol (1.4 g, 7.8 mmol),
followed by potassium carbonate (2.2 g, 15.6 mmol). The reaction
was heated at 65 degrees Celsius for twelve hours. Removing the
N,N-dimethylacetamide in vacuo afforded a brown solid (5.4 g,
quantitative). Chromatography (reverse phase, C-18,
acetonitrile/water) gave the THP-protected product in solution.
[0817] Part B: To the solution of the crude THP-protected product
from Part A in acetonitrile/water (40 mL) was slowly added 10%
HCl.sub.aq (40 mL). After stirring overnight (about 18 hours), the
acetonitrile was removed. The resultant precipitate was collected,
giving the title compound as a white solid (0.20 g, 8%). MS (FAM)
M.sup.+H calculated for
C.sub.18H.sub.17F.sub.3N.sub.2O.sub.5S.sub.2: 463, found 463.
EXAMPLE 60
Preparation of
4-[[4-(3,4-dichlorophenyl]-thio]phenyl]sulfonyl]-tetrahydro-N-hydroxy-2H--
pyran-4-carboxamide
[0818] ##STR3401##
[0819] Part A: To a solution of the title compound of Example 55
(2.0 g, 5.2 mmol) in N,N-dimethylacetamide (6 mL) was added
3,4-dichlorothiophenol (1.4 g, 7.8 mmol) followed by potassium
carbonate (2.2 g, 15.6 mmol). The reaction was heated at 70 degrees
Celsius for six hours. Removing the N,N-dimethylacetamide in vacuo
afforded a brown solid (5.6 g, quantitative). Chromatography
(reverse phase, C-18, acetonitrile/water) gave the THP protected
product in solution.
[0820] Part B: To the solution of the THP-protected product from
Part A in acetonitrile/water (40 mL) was slowly added 10%
HCl.sub.aq (40 mL). After stirring overnight (about 18 hours), the
acetonitrile was removed. The resultant precipitate was collected,
giving the title compound as a white solid (1.5 g, 62%). MS (FAB)
M.sup.+H calculated for C.sub.18H.sub.17Cl.sub.2NO.sub.5S: 463,
found 463.
EXAMPLE 61
Preparation of
4-[[4-[[2-amino-4-(trifluoromethyl)phenyl]thio]phenyl]-sulfonyl]-tetrahyd-
ro-N-hydroxy-2H-pyran-4-carboxamide, monohydrochloride
[0821] ##STR3402##
[0822] Part A: To a solution of the title compound of Example 55
(2.0 g, 5.2 mmol) in N,N-dimethylacetamide (6 mL) was added
2-amino-4-(trifluoromethyl)thiophenol hydrochloride (1.8 g, 7.8
mmol), followed by potassium carbonate (3.6 g, 26 mmol). The
reaction was heated at 70 degrees Celsius for eight hours. Removing
the dimethylacetamide in vacuo afforded a brown solid (14 g,
quantitative). Chromatography (reverse phase, C-18,
acetonitrile/water) gave the THP protected product in solution.
[0823] Part B: To the solution of the THP-protected product in
acetonitrile/water (40 mL) was slowly added 10% HCl.sub.aq (40 mL).
After stirring overnight (about 18 hours), the acetonitrile was
removed. The resultant precipitate was collected, giving the title
compound as a white solid (1.3 g, 52%). MS (FAB) M.sup.+H
calculated for C.sub.18H.sub.17Cl.sub.2NO.sub.6S: 477, found
477.
EXAMPLE 62
Preparation of
Tetrahydro-4[[4-(4-phenyl-1-piperidinyl)phenyl]sulfonyl]-2H-pyran-4-carbo-
xamide, monohydrochloride
[0824] ##STR3403##
[0825] Part A: In dry equipment under nitrogen, sodium metal (8.97
g, 0.39 mol) was added to methanol (1000 mL) at two degrees
Celsius. The reaction was stirred at ambient temperature for
forty-five minutes at which time the sodium had dissolved. The
solution was chilled to five degrees Celsius and p-fluorothiophenol
(41.55 mL, 0.39 mmol) was added, followed by methyl 2-chloroacetate
(34.2 mL, 0.39 mol). The reaction was stirred at ambient
temperature for four hours, filtered, and concentrated in vacuo to
give the sulfide as a clear colorless oil (75.85 g, 97%).
[0826] Part B: To a solution of the sulfide from part A (75.85 g,
0.38 mol) in methanol (1000 mL) was added water (100 mL) and
Oxone.RTM. (720 g, 1.17 mol) at 20 degrees Celsius. An exotherm to
67 degrees Celsius was noted. After two hours, the reaction was
filtered and the cake was washed well with methanol. The filtrate
was concentrated in vacuo. The residue was taken up in ethyl
acetate and washed with brine, dried over MgSO.sub.4, filtered, and
concentrated in vacuo to give the sulfone as a crystalline solid
(82.74 g, 94%).
[0827] Part C: To a solution of the sulfone from part B (28.5 g,
0.123 mol) in N,N-dimethylacetamide (200 mL) were added potassium
carbonate (37.3 g, 0.27 mol), bis-(2-bromoethyl)ether (19.3 mL,
0.147 mol), 4-dimethylaminopyridine (0.75 g, 6 mmol), and
tetrabutylammonium bromide (1.98 g, 6 mmol). The reaction was
stirred overnight (about 18 hours) at ambient temperature. The
reaction was slowly poured into 1N HCl (300 mL), the resultant
solid filtered and the cake washed well with hexanes. The solid was
recrystallized from ethyl acetate/hexanes to give the pyran
compound as a beige solid (28.74 g, 77%). MS (ES+) MH+ calculated
for C.sub.13H.sub.15O.sub.5S.sub.1F: 303, found 303.
[0828] Part D: To a solution of the pyran compound from part C
(1.21 g, 4.0 mmol) in dimethyl sulfoxide (10 mL) were added cesium
carbonate (3.26 g, 10 mmol) and 4-phenylpiperidine (0.64 g, 4.0
mmol) in methyl sulfoxide (10 mL). The slurry was stirred at 90
degrees Celsius for two hours. The reaction was cooled, diluted
with water and extracted with ethyl acetate. The combined organic
layers were washed with 5% KHSO.sub.4, saturated NaHCO.sub.3,
brine, dried over Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo. The resultant solid was slurried in diethyl ether, filtered
and dried to give the N-substituted piperidine as a white solid
(1.2 g, 67%). MS (FAB+) MH+ calculated for
C.sub.24H.sub.29N.sub.1O.sub.5S.sub.1, 444, found 444.
[0829] Part E: To a slurry of the N-substituted piperidine from
part D (815 mg, 1.84 mmol) in methanol (5 mL) and tetrahydrofuran
(5 mL) was added 50% sodium hydroxide (3 mL). After twenty-four
hours at ambient temperature, the reaction was concentrated in
vacuo. The slurry was diluted with water (10 mL) and 6N HCl was
added until the pH=7. Vacuum filtration of the resulting
precipitate provided the acid as a white solid (705 mg, 89%). MS
(FAB+) MH+ calculated for C.sub.23H.sub.27N.sub.1O.sub.5S, 430,
found 430.
[0830] Part F: In dry equipment under nitrogen, the carboxylic acid
from part E (620 mg, 1.44 mmol) was slurried in methylene chloride
(10 mL) and N,N-dimethylformamide (3 mL) and the remaining reagents
were added to the slurry in the following order:
bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (810 mg,
1.73 mmol), N-methylmorpholine (0.5 mL, 4.34 mmol), and
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (190 m g, 1.59 mmol).
After four hours at ambient temperature, the reaction was
concentrated in vacuo. The residue was taken up in ethyl acetate,
washed with water, brine, dried over Na.sub.2SO.sub.4, filtered,
and concentrated in vacuo. Chromatography (on silica, ethyl
acetate/hexanes) provided the THP-protected hydroxamate as a white
solid (630 mg, 83%). MS (FAB+) MH+ calculated for
C.sub.28H.sub.22N.sub.2O.sub.6S.sub.1: 529, found 529.
[0831] Part G: To a slurry of the THP-protected hydroxamate from
part F (600 mg, 1.14 mmol) in dioxane (1.5 mL) was added a 4N HCl
dioxane solution (1.5 mL) and methanol (1.5 mL). After two hours at
ambient temperature the reaction was poured into diethyl ether (100
mL). Vacuum filtration of the resulting precipitate provided the
title compound as a light beige solid (500 mg, 91%). MS (FAB+) M+Li
calculated for C.sub.23H.sub.28N.sub.2O.sub.5S.sub.1, 445, found
445.
EXAMPLE 63
Preparation of
4-[[4-[4-(1,3-Benzodioxol-5-yloxy)-1-piperidinyl]phenyl]sulfonyl]-tetrahy-
dro-N-hydroxy-2H-pyran-4-carboxamide, monohydrochloride
[0832] ##STR3404##
[0833] Part A: In dry equipment under nitrogen, 4-hydroxypiperidine
(20.2 g, 0.2 mol) was dissolved in tetrahydrofuran (200 mL) and
triethylamine (29 mL, 0.21 mol). A solution of
di-t-butyldicarbonate (43.65 g, 0.2 mol) was added at such a rate
that the temperature remained below 30 degrees Celsius. After
stirring at ambient temperature for four hours, the reaction was
concentrated in vacuo. The residue was taken up in ethyl acetate,
washed with water, 5% KHSO.sub.4, saturated NaHCO.sub.3, brine,
dried over Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to
give the BOC piperidine as a white solid (37.7 g, 94%).
[0834] Part B: In dry equipment under nitrogen, the BOC piperidine
from part A (5.0 g, 24.8 mmol) in dry tetrahydrofuran (100 mL) was
cooled to zero degrees Celsius and triphenylphosphine (9.77 g, 37.3
mmol) was added. After fifteen minutes of stirring at zero degrees
Celsius, sesamol (5.15 g, 37.3 mmol) was added to the reaction
followed by the dropwise addition of diethylazodicarboxylate (5.87
mL, 37.7 mmol). The reaction was stirred for thirty minutes at zero
degrees Celsius and then at ambient temperature for twenty hours.
The reaction was concentrated in vacuo. The residue was slurried in
diethyl ether, the triphenyl phosphine oxide filtered off and the
filtrate concentrated in vacuo. Chromatography (on silica, ethyl
acetate/hexanes) provided the substituted BOC piperidine as a white
solid (3.14 g, 39%).
[0835] Part C: To a slurry of the substituted BOC piperidine from
part B (3.14 g, 9.8 mmol) in dioxane (15 mL) was added a 4N HCl
dioxane solution (15 mL). After three hours at ambient temperature,
the reaction was concentrated in vacuo. The residue was slurried in
diethyl ether and vacuum filtration of the resulting precipitate
provided the hydrochloride salt as a white solid (2.3 g, 100%).
[0836] Part D: To a slurry of the hydrochloride salt from part C
(0.93 g, 3.6 mmol) in N,N-dimethylformamide (10 mL) were added
cesium carbonate (2.93 g, 9 mmol) and the title compound of Example
55 (1.16 g, 3.0 mmol). The slurry was stirred at 90 degrees Celsius
for twenty four hours. The reaction was concentrated in vacuo. The
residue was taken up in ethyl acetate, washed with water, 5%
KHSO.sub.4, saturated NaHCO.sub.3, brine, dried over
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
Chromatography (on silica, ethyl acetate/hexanes) provided the
substituted THP-protected hydroxamate as a white solid (640 mg,
36%). MS (FAB+) MH+ calculated for C.sub.29H.sub.36N.sub.2O,
S.sub.1: 589, found 589.
[0837] Part E: To a slurry of the THP-protected hydroxamate from
part D (600 mg, 1.02 mmol) in dioxane (3 mL) were added a 4N HCl
dioxane solution (3 mL) and methanol (3 mL). After one hour at
ambient temperature, the reaction was poured into diethyl ether
(100 mL). Vacuum filtration of the resulting precipitate provided
the title compound as a light beige solid (440 mg, 80%). HRMS (ES+)
MH+ calculated for C.sub.24H.sub.28N.sub.2O.sub.8S.sub.1: 505.16,
found 505.16.
EXAMPLE 64
Preparation of
Tetrahydro-N-hydroxy-4-[[4-(4-methoxyphenoxy)phenyl]sulfonyl]-2H-pyran-4--
carboxamide
[0838] ##STR3405##
[0839] Part A: To a solution of the title compound of Example 55
(3.48 g, 9 mmol) in N,N-dimethylformamide (20 mL) were added cesium
carbonate (8.8 g, 27 mmol) and p-methoxyphenol (2.23 g, 18 mmol).
The slurry was stirred at 95 degrees Celsius for twenty four hours.
The reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with brine, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. Chromatography (on silica,
ethyl acetate/hexanes) provided the substituted THP-protected
hydroxamate as a beige foam (3.82 g, 86%). MS (FAB+) MH+ calculated
for C.sub.24H.sub.29N.sub.1O.sub.8S.sub.1: 492, found 492.
[0840] Part B: To a slurry of the THP-protected hydroxamate from
part A (3.6 g, 7.33 mmol) in dioxane (18 mL) were added a 4N HCl
dioxane solution (18 mL) and methanol (18 mL). After fifteen
minutes at ambient temperature, the reaction was diluted with ethyl
acetate and washed with water, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as a white solid (2.1
g, 70%). HRMS (ES+) MH+ calculated for
C.sub.19H.sub.21N.sub.1O.sub.7S.sub.1: 408.11, found 408.11.
EXAMPLE 65
Preparation of
Tetrahydro-N-hydroxy-4-[[4-(4-methoxyphenylthio)phenyl]-sulfonyl]-2H-pyra-
n-4-carboxamide
[0841] ##STR3406##
[0842] Part A: To a solution of the title compound of Example 55
(3.1 g, 8 mmol) in N,N-dimethylformamide (20 mL) were added
potassium carbonate (1.33 g, 9.6 mmol) and p-methoxybenzenethiol
(1.48 mL, 12 mmol). The slurry was stirred at 65 degrees Celsius
for twenty-four hours. The reaction was concentrated in vacuo. The
residue was taken up in ethyl acetate, washed with brine, dried
over Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
Chromatography (on silica, ethyl acetate/hexanes) provided the
substituted THP-protected hydroxamate as a white foam (4.1 g,
100%). HRMS (ES+) M+NH.sub.4.sup.+ calculated for
C.sub.24H.sub.29N.sub.1O.sub.7S.sub.2: 525.17, found 525.17.
[0843] Part B: To a slurry of the THP-protected hydroxamate from
part A (4.0 g, 7.9 mmol) in dioxane (20 mL) was added a 4N HCl
dioxane solution (20 mL) and methanol (20 mL). After fifteen
minutes at ambient temperature, the reaction was diluted with ethyl
acetate, washed with water, dried over Na.sub.2SO.sub.4, filtered,
and concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as a white solid (2.21
g, 67%). HRMS (ES+) MH+ calculated for
C.sub.19H.sub.21N.sub.1O.sub.6S.sub.2: 424.09, found 424.09.
EXAMPLE 66
Preparation of
4-[(4-fluorophenyl)-sulfonyl]tetrahydro-N-hydroxy-2H-pyran-4-carboxamide
[0844] ##STR3407##
[0845] Part A: To a slurry of the title compound of Example 55 (530
mg, 1.38 mmol) in dioxane (5 mL) was added a 4N HCl dioxane
solution (5 mL) and methanol (5 mL). After fifteen minutes at
ambient temperature the reaction was concentrated in vacuo. Reverse
phase chromatography (on silica, acetonitrile/water) provided the
title compound as a beige solid (140 mg, 34%). HRMS (ES+)
M+NH.sub.4.sup.+ calculated for
C.sub.12H.sub.14N.sub.1O.sub.5S.sub.1F.sub.1: 321.09, found
321.09.
EXAMPLE 67
Preparation of
tetrahydro-N-hydroxy-4-[[4-(4-piperidinyloxy)phenyl]sulfonyl]-2H-pyran-4--
carboxamide, monohydrochloride
[0846] ##STR3408##
[0847] Part A: In dry equipment under nitrogen,
4-hydroxy-N-t-(butoxycarbonyl)piperidine (844 mg, 4.2 mmol) was
added to 60% sodium hydride (210 mg, 5.25 mmol) in dry
N,N-dimethylformamide (10 mL) at zero degrees Celsius. The slurry
was stirred for two hours at ambient temperature. At five degrees
Celsius, the title compound of Example 55 (1.35 g, 3.5 mmol) was
added and the reaction heated to 50 degrees Celsius for three
hours. The reaction was cooled, quenched with water, and
concentrated in vacuo. The residue was taken up in ethyl acetate,
washed with brine, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. Chromatography (on silica, ethyl
acetate/hexanes) provided the substituted THP-protected hydroxamate
as a white foam (283 mg, 14%). MS (FAB+) MH+ calculated for
C.sub.27H.sub.40N.sub.2O.sub.9S.sub.1: 569, found 569.
[0848] Part B: To a slurry of the THP-protected hydroxamate from
part A (530 mg, 0.93 mmol) in dioxane (5 mL) were added a 4N HCl
dioxane solution (5 mL) and methanol (5 mL). After fifteen minutes
at ambient temperature the reaction was concentrated in vacuo.
Reverse phase chromatography (on silica, acetonitrile/water
buffered with 0.01% HCl) provided the title compound as a beige
solid (240 mg, 62%). HRMS (ES+) MH+ calculated for
C.sub.17H.sub.24N.sub.2O.sub.6S.sub.1: 385.14, found 385.14.
EXAMPLE 68
Preparation of
tetrahydro-N-hydroxy-4-[[4-[(4-phenylmethyl)amino]phenyl]-sulfonyl]-2H-py-
ran-4-carboxamide, monohydrochloride
[0849] ##STR3409##
[0850] Part A: In a solid phase reaction vessel, benzylamine (11.0
mL, 100 mmol) was added to Resin II (in a procedure described
hereinafter; 5.0 g, 4.55 mmol) swollen in dry
1-methyl-2-pyrrolidinone (40 mL). The reaction was heated to 100
degrees Celsius for forty-eight hours with good shaking. The resin
was transferred to a frit and washed four times with
N,N-dimethylformamide (30 mL), four times with methanol (30 mL),
four times with methylene chloride (30 mL), and dried. The dried
resin was transferred to a flask and a solution of 95%
trifluoroacetic acid/5% water (50 mL) was added. The slurry was
stirred for one hour, filtered and the cake was washed with
methylene chloride. The combined filtrates were concentrated in
vacuo. The residue was dissolved in ethyl acetate and saturated
sodium bicarbonate solution was added until pH=7. The organic layer
was dried over Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo. Reverse phase chromatography (on silica, acetonitrile/water
buffered with 0.01% HCl) provided the title compound as a reddish
solid (1.01 g, 52%). HRMS (ES+) M+NH.sub.4.sup.+ calculated for
C.sub.19H.sub.22N.sub.2O.sub.5S.sub.1 408.16, found 408.16.
EXAMPLE 69
Preparation of
Tetrahydro-N-hydroxy-4-[[4-[4-trifluoromethoxy)phenoxy)phenyl]-sulfonyl]--
2H-pyran-4-carboxamide
[0851] ##STR3410##
[0852] Part A: To a solution of the title compound of Example 55
(3.1 g, 8 mmol) in N,N-dimethylacetamide (20 mL) were added cesium
carbonate (8.8 g, 27 mmol) and p-(trifluoromethoxy)phenol (2.1 mL,
16 mmol). The slurry was stirred at 95 degrees Celsius for nineteen
hours. The reaction was concentrated in vacuo. The residue was
taken up in ethyl acetate, washed with brine, dried over
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
Chromatography (on silica, ethyl acetate/hexanes) provided the
substituted THP-protected hydroxamate as a white foam (4.2 g, 969).
HRMS (ES+) MH+ calculated for
C.sub.24H.sub.26N.sub.1O.sub.8S.sub.1F.sub.3: 546.14, found
546.14.
[0853] Part B: To a slurry of the THP-protected hydroxamate from
part A (4.0 g, 7.3 mmol) in dioxane (20 mL) were added a 4N HCl
dioxane solution (20 mL) and methanol (20 mL). After fifteen
minutes at ambient temperature, the reaction was diluted with ethyl
acetate and washed with water, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as a white solid (2.2
g, 65%). HRMS (ES+) M+NH.sub.4.sup.+ calculated for
C.sub.19H.sub.18N.sub.1O.sub.7S.sub.1F.sub.3: 479.11, found
479.11.
EXAMPLE 70
Preparation of
4-[[4-(3,5-difluorophenoxy)phenyl]sulfonyl]tetrahydro-N-hydroxy-2H-pyran--
4-carboxamide
[0854] ##STR3411##
[0855] Part A: To a solution of the title compound of Example 55
(3.1 g, 8 mmol) in N,N-dimethylacetamide (20 mL) were added cesium
carbonate (8.8 g, 27 mmol) and 3,5-difluorophenol (2.1 g, 16 mmol).
The slurry was stirred at 95 degrees Celsius for forty-eight hours.
The reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with brine, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. Chromatography (on silica,
ethyl acetate/hexanes) provided the substituted THP-protected
hydroxamate as a beige foam (3.23 g, 81%). HRMS (ES+) MH+
calculated for C.sub.23H.sub.25N.sub.1O.sub.7S.sub.1F.sub.2:
498.14, found 498.14.
[0856] Part B: To a slurry of the THP-protected hydroxamate from
part A (3.2 g, 6.3 mmol) in dioxane (20 mL) were added a 4N HCl
dioxane solution (20 mL) and methanol (20 mL). After fifteen
minutes at ambient temperature the reaction was diluted with ethyl
acetate and washed with water, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. The residue was slurried in
diethyl ether and vacuum filtration of the resulting precipitate
provided the title compound as a white solid (1.5 g, 57%). HRMS
(ES+) M+NH.sub.4.sup.+ calculated for
C.sub.18H.sub.17N.sub.1O.sub.6S.sub.1F.sub.2: 431.11, found
431.11.
EXAMPLE 71
Preparation of
4-[[4-(3,4-dichlorophenoxy)-phenyl]sulfonyl]-tetrahydro-N-hydroxy-2H-pyra-
n-4-carboxamide
[0857] ##STR3412##
[0858] Part A: To a solution of the title compound of Example 55
(3.1 g, 8 mmol) in N,N-dimethylacetamide (20 mL) were added cesium
carbonate (8.8 g, 27 mmol) and 3,4-dichlorophenol (2.61 g, 16
mmol). The slurry was stirred at 95 degrees Celsius for forty-one
hours. The reaction was concentrated in vacuo. The residue was
taken up in ethyl acetate, washed with brine, dried over
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
Chromatography (on silica, ethyl acetate/hexanes) provided the
substituted THP-protected hydroxamate as a white foam (4.17 g,
98%). HRMS (ES+) M+NH.sub.4.sup.+ calculated for
C.sub.23H.sub.25N.sub.1O.sub.7 SlCl.sub.2: 547.11, found
547.10.
[0859] Part B: To a slurry of the THP-protected hydroxamate from
part A (3.5 g, 6.6 mmol) in dioxane (20 mL) were added a 4N HCl
dioxane solution (20 mL) and methanol (20 mL). After fifteen
minutes at ambient temperature the reaction was diluted with ethyl
acetate and washed with water, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. The residue was slurried in
diethyl ether and vacuum filtration of the resulting precipitate
provided the title compound as a white solid (2.98 g, 100%). HRMS
(ES+) M+NH.sub.4.sup.+ calculated for
C.sub.18H.sub.17N.sub.1O.sub.6S.sub.1Cl.sub.2: 463.05, found
463.05.
EXAMPLE 72
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-[(phenylmethyl)oxy]phenoxy]-phenyl]-sulfony-
l]-2H-pyran-4-carboxamide
[0860] ##STR3413##
[0861] Part A: To a solution of the title compound of Example 55
(2.7 g, 7 mmol) in N,N-dimethylacetamide (20 mL) were added cesium
carbonate (6.84 g, 21 mmol) and 4-(benzyloxy)phenol (2.8 g, 14
mmol). The slurry was stirred at 95 degrees Celsius for six hours.
The reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with brine, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. Chromatography (on silica,
ethyl acetate/hexanes) provided the substituted THP-protected
hydroxamate as a white foam (3.94 g, 99%). HRMS (ES+)
M+NH.sub.4.sup.+ calculated for
C.sub.30H.sub.33N.sub.1O.sub.8S.sub.1: 585.23, found 585.23.
[0862] Part B: To a slurry of the THP-protected hydroxamate from
part A (1.42 g, 2.5 mmol) in dioxane (6.3 mL) were added a 4N HCl
dioxane solution (6.3 mL) and methanol (6.3 mL). After fifteen
minutes at ambient temperature the reaction was diluted with ethyl
acetate and washed with water, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as a white solid (0.56
g, 46%). HRMS (ES+) MH+ calculated for
C.sub.25H.sub.25N.sub.1O.sub.7S.sub.1: 484.14, found 484.14.
EXAMPLE 73
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-(trifluoromethoxy)phenylthio]-phenyl]-sulfo-
nyl]-2H-pyran-4-carboxamide
[0863] ##STR3414##
[0864] Part A: To a solution of the title compound of Example 55
(3.1 g, 8 mmol) in N,N-dimethylformamide (20 mL) were added
potassium carbonate (2.21 g, 16 mmol) and
p-(trifluoromethoxy)benzenethiol (2.33 g, 12 mmol). The slurry was
stirred at 70 degrees Celsius for two hours. The reaction was
concentrated in vacuo. The residue was taken up in ethyl acetate,
washed with brine, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. Chromatography (on silica, ethyl
acetate/hexanes) provided the substituted THP-protected hydroxamate
as a white solid (4.4 g, 98%). HRMS (ES+) M+NH.sub.4.sup.+
calculated for C.sub.24H.sub.26N.sub.1O.sub.7S.sub.2F.sub.3:
579.14, found 579.14.
[0865] Part B: To a slurry of the THP-protected hydroxamate from
part A (4.15 g, 7.4 mmol) in dioxane (20 mL) were added a 4N HCl
dioxane solution (20 mL) and methanol (20 mL). After fifteen
minutes at ambient temperature the reaction was diluted with ethyl
acetate and washed with water, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as a white solid (3.0
g, 85%). HRMS (ES+) M+NH.sub.4.sup.+ calculated for
C.sub.19H.sub.18N.sub.1O.sub.6S.sub.2F.sub.3: 495.09, found
495.09.
EXAMPLE 74
Preparation of
phenylmethyl-[4-[[2-(hydroxyamino)-2-oxoethyl]-sulfonyl]phenyl]carbamate
[0866] ##STR3415##
[0867] Part A: To a suspension of 2-(4-aminophenylthio) acetic acid
(20.0 g, 0.11 mol) in methanol (100 mL), cooled to zero degrees
Celsius, was slowly added thionyl chloride (24.0 mL, 0.33 mol).
Additional methanol (100 mL) was added and the cooling bath was
removed. The resulting mixture was heated at reflux for 2 hours.
The reaction mixture was then cooled to ambient temperature and
concentrated in vacuo. The residue was dissolved in H.sub.2O and
neutralized with saturated NaHCO.sub.3. The aqueous reaction
mixture was extracted with ethyl acetate. The organic layer was
washed with saturated NaCl and dried over Na.sub.2SO.sub.4.
Concentration in vacuo provided the methyl ester sulfide as a dark
purple oil (22.75 g, quantitative yield).
[0868] Part B: To a solution of the methyl ester sulfide of part A
(10.0 g, 50.7 mmol) in dichloromethane (100 mL) was added
N-methylmorpholine (11.2 mL, 101.4 mmol), followed by
N-(benzyloxycarbonyloxy)succinimide (12.6 g, 50.7 mmol). The
resulting mixture was stirred at ambient temperature overnight
(about 18 hours) and then concentrated in vacuo. The residue was
dissolved in ethyl acetate and then washed with H.sub.2O, 5%
KHSO.sub.4, saturated NaCl and dried over Na.sub.2SO.sub.4.
Concentration in vacuo provided the benzyloxy carbamate sulfide as
a dark oil (16.2 g, 96%).
[0869] Part C: To a solution of the benzyloxy carbamate sulfide of
part B (16.2 g, 48.7 mmol) in tetrahydrofuran (100 mL) and H.sub.2O
(10 mL) was added Oxone.RTM. (90.0 g, 146.4 mmol), and the
resulting mixture was stirred at ambient temperature for 16 hours.
The reaction mixture was then filtered and the filtrate was
concentrated in vacuo. The residue was dissolved in ethyl acetate,
washed with H.sub.2O, saturated NaCl and dried over
Na.sub.2SO.sub.4. Concentration in vacuo provided the benzyloxy
carbamate sulfone as a tan solid (15.6 g, 88%).
[0870] Part D: To a solution of the benzyloxy carbamate sulfone of
part C (0.25 g, 0.69 mmol) in tetrahydrofuran (3 mL) was added 50%
aqueous hydroxylamine (1.5 mL). The resulting mixture was stirred
at ambient temperature for 24 hours. The mixture was then diluted
with ethyl acetate (30 mL), washed with H.sub.2O, saturated NaCl
and dried over Na.sub.2SO.sub.4.
[0871] Concentration in vacuo followed by washing with hot diethyl
ether provided the title compound as a pale pink solid (0.20 g,
80%). MS MH+ calculated for C.sub.16H.sub.17O.sub.6N.sub.2S: 365,
found 365.
EXAMPLE 75
Preparation of
N-hydroxy-2-[[4-[[(phenylamino)carbonyl]amino]-phenyl]sulfonyl]acetamide
[0872] ##STR3416## is Part A: Hydrogen gas was bubbled into a
suspension of the benzyloxy carbamate sulfone of part C, Example 74
(13.4 g, 36.8 mmol) and 4% Pd/C in tetrahydrofuran (100 mL). After
the uptake of H.sub.2 ceased the mixture was purged with N.sub.2
and then filtered through a pad of Celite.RTM. washing with
tetrahydrofuran. The filtrate was concentrated in vacuo to give the
aniline as a brown solid (8.1 g, 96%).
[0873] Part B: To a suspension of the aniline of part A (0.50 g,
2.2 mmol) in dichloromethane (4 mL) was added phenyl isocyanate
(0.36 mL, 3.3 mmol). The mixture was stirred at ambient temperature
overnight (about 18 hours) and then diluted with dichloromethane
(50 mL), The mixture was then washed with H.sub.2O.sub.1 saturated
NaCl and dried over Na.sub.2SO.sub.4. Chromatography (on silica,
ethyl acetate/hexane) provided the urea as a white solid (0.59 g,
78%).
[0874] Part C: To a solution of the urea of part B (0.32 g, 0.92
mmol) in tetrahydrofuran (3 mL) was added 50% aqueous hydroxylamine
(1.5 mL). The resulting mixture was stirred at ambient temperature
for 24 hours. The mixture was then diluted with ethyl acetate (30
mL)), washed with H.sub.2O, saturated NaCl and dried over
Na.sub.2SO.sub.4. Concentration in vacuo, followed by washing with
hot diethyl ether provided the title compound as a pale pink solid
(0.24 g, 76%). MS MH.sup.+ calculated for
C.sub.15H.sub.16O.sub.5N.sub.3S: 350, found 350.
EXAMPLE 78
Preparation of
5-[4-(3,4-dimethylphenoxy)phenyl]sulfonyl-N-hydroxy-1,3-dimethylhexahydro-
-5-pyrimidinecarboxamide, dihydrochloride
[0875] ##STR3417##
[0876] Part A: To a solution of part B, Example 55 (2.00 g, 8.61
mmol) and 1,3,5-trimethylhexahydro-1,3,5-triazine (1.21 mL, 8.61
mmol) in benzene (20 mL) was slowly added trifluoroacetic acid
(0.66 mL, 8.61 mmol). The resulting mixture was heated at reflux
for 1 hour and then cooled to ambient temperature. The mixture was
then extracted with 2N HCl. The aqueous layer was neutralized with
saturated NaHCO.sub.3 and then extracted with diethyl ether. The
organic layers were washed with saturated NaCl and dried over
Na.sub.2SO.sub.4. Concentration in vacuo provided the
tetrahydropyrimidine as a clear oil (2.31 g, 81%).
[0877] Part B: To a solution of the tetrahydopyrimidine of part A
(1.26 g, 3.81 mmol) in N,N-dimethylformamide (5.0 mL) were added
3,4-dimethylphenol (0.559 g, 4.58 mmol) and Cs.sub.2CO.sub.3 (3.72
g, 11.43 mmol). The resulting mixture was heated at 90 degrees
Celsius for 16 hours. After cooling to ambient temperature, the
reaction was diluted with H.sub.2O and extracted with ethyl
acetate. The organic layers were washed with saturated NaCl and
dried over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate) gave the biaryl ether as a pale amber oil (1.40 g,
85%).
[0878] Part C: To a solution of the biaryl ether of part B (0.936
g, 2.16 mmol) in tetrahydrofuran (5.0 mL) was added potassium
trimethylsilanolate (0.360 g, 2.81 mmol). The resulting mixture was
stirred at ambient temperature for 48 hours and then the solvent
was removed. The resulting residue was dissolved in dichloromethane
(5.0 mL) then, N-methylmorpholine (0.712 mL, 6.48 mmol) and
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.278 g, 2.38 mmol) were
added. After stirring at ambient temperature for 10 minutes,
PyBroP.RTM. (1.21 g, 2.59 mmol) was added. The resulting mixture
was stirred at ambient temperature overnight (about 18 hours), then
diluted with dichloromethane (50 mL) and washed with H.sub.2O. The
organic layer was removed and washed with saturated NaCl and dried
over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl acetate)
provided the hydroxamate as a white solid (0.970 g, 87%).
[0879] Part F: To a suspension of the hydroxamate of part E (0.667
g, 1.29 mmol) in dioxane (3.0 mL) and methanol (1.0 mL) was added a
solution of 4N HCl in dioxane (3.22 mL, 12.9 mmol). After stirring
at ambient temperature for 30 minutes, the reaction mixture was
concentrated in vacuo. Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O/trifluoroacetic acid) provided the title
compound as a white solid (0.379 g, 58%). MS MH.sup.+ calculated
for C.sub.21H.sub.28O.sub.5N.sub.3S: 434, found 434.
EXAMPLE 79
Preparation of
4-[[4-(4-chloro-3-methylphenoxy)phenyl]sulfonyl]-N-hydroxy-4-piperidineca-
rboxamide, monohydrochloride
[0880] ##STR3418##
[0881] Part A: To a suspension of isonipectic acid (50.0 g, 0.39
mol) in methanol (300 mL) cooled to zero degrees Celsius was slowly
added dropwise thionyl chloride (85.0 mL, 1.16 mol). Once the
addition was complete the cooling bath was removed and the mixture
was heated at reflux for 2 hours. After cooling to ambient
temperature the reaction mixture was concentrated in vacuo. The
resulting solids were suspended in ethyl acetate and then washed
with saturated NaHCO.sub.3. The aqueous layer was concentrated in
vacuo and the resulting solids were dissolved in hot ethyl acetate
and decanted from the salts. The organic layers were then
concentrated in vacuo to give the methyl ester as a white solid
(55.4 g, quantitative yield).
[0882] Part B: To a solution of di-tert-butyl dicarbonate (15.3 g,
70.0 mmol) in tetrahydrofuran (100 mL) was added the methyl ester
of part A (10.0 g, 70.0 mmol). The resulting mixture was stirred at
ambient temperature overnight (about 18 hours) and then
concentrated in vacuo. Chromatography (on silica, ethyl
acetate/hexane) provided the Boc-piperidine methyl ester as a pale
yellow oil (10.1 g, 59%).
[0883] Part C: To a solution of the Boc-piperidine methyl ester of
part B (23.31 g, 0.096 mol) in tetrahydrofuran (500 mL), cooled to
minus 40 degrees Celsius, was slowly added lithium diisopropylamide
(57.5 mL, 2.0 M in THF, 0.115 mol). The resulting mixture was
stirred at minus 40 degrees Celsius for 1 hour and then at zero
degrees Celsius for 30 minutes. The mixture was then recooled to
minus 40 degrees Celsius and a solution of the disulfide from Part
A, Example 6 (24.37 g, 0.096 mol) in tetrahydrofuran (60 mL) was
slowly added. The resulting mixture was slowly warmed to ambient
temperature overnight (about 18 hours) and then H.sub.2O (200 mL)
was added. The mixture was then concentrated in vacuo and the
aqueous layer was extracted with ethyl acetate. The organic layers
were washed with 0.5 M NaOH, H.sub.2O, saturated NaCl and dried
over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) gave the sulfide as an amber oil (28.1 g, 79%).
[0884] Part D: To a solution of the sulfide of part C (28.2 g,
0.076 mol) in dichloromethane (250 mL), cooled to zero degrees
Celsius, was added m-chloroperoxy-benzoic acid (48 g, 0.152 mol).
The resulting mixture was stirred at zero degrees Celsius for 1
hour, and then at ambient temperature for 2.5 hours. The mixture
was then diluted with H.sub.2O and 10% NH.sub.4OH. The organic
layer was washed with 10% NH.sub.4OH, H.sub.2O and dried over
Na.sub.2SO.sub.4. Chromatography (on silica, ethyl acetate/hexane)
provided the sulfone as a white solid (24.7 g, 81%).
[0885] Part E: To a solution of the sulfone of part D (3.00 g, 7.47
mmol) in N,N-dimethylformamide (15 mL) were added
4-chloro-3-methylphenol (1.28 g, 8.96 mmol) and Cs.sub.2CO.sub.3
(7.30 g, 22.42 mmol). The resulting mixture was heated at 80
degrees Celsius for 8 hours. The mixture was then concentrated in
vacuo, and the residue was partitioned between H.sub.2O and ethyl
acetate. The organic layer was washed with saturated NaCl and dried
over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) gave the biaryl ether as a clear oil (3.26 g,
83%).
[0886] Part F: To a solution of the biaryl ether of part E (3.17 g,
6.05 mmol) in tetrahydrofuran (30 mL) was added potassium
trimethylsilanolate (1.01 g, 7.87 mmol) The resulting mixture was
stirred at ambient temperature for 20 hours. Additional
tetrahydrofuran (40 mL) was added and the mixture was stirred at
ambient temperature for 36 hours. Additional potassium
trimethylsilanolate (0.233 g, 1.82 mmol) was added and the mixture
was stirred at ambient temperature for 23 hours. The
tetrahydrofuran was removed and the resulting residue was suspended
in dichloromethane (30 mL). To the suspension was added
N-methylmorpholine (2.00 mL, 18.15 mmol) and
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.780 g, 6.66 mmol)
followed by PyBroP.RTM. (3.38 g, 7.26 mmol). The mixture was
stirred at ambient temperature for 24 hours and then concentrated
in vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The organic layer was washed with H.sub.2O, saturated NaCl
and dried over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the hydroxamate as an off-white foam (2.98
g, 81%).
[0887] Part G: To a solution of the hydroxamate of part F (2.98 g,
4.89 mmol) in dioxane (14 mL) and methanol (6 mL) was added a
solution of 4N HCl in dioxane (10 mL). The resulting mixture was
stirred at ambient temperature for 3.5 hours, then diethyl ether
(40 mL) was added and the precipitate was collected by filtration
to provide the title compound as a light pink solid (2.00 g, 88%).
MS MH.sup.+ calculated for C.sub.19H.sub.22O.sub.5N.sub.2ClS: 425,
found 425.
EXAMPLE 80
Preparation of
4-[[4-(4-chloro-3-methylphenoxy)phenyl]sulfonyl]-4-(hydroxyamino)carbonyl-
]-1-piperidineacetic acid, monohydrochloride
[0888] ##STR3419##
[0889] Part A: To a suspension of the title compound of Example 80
(0.250 g, 0.542 mmol) in acetonitrile (4.0 mL) were added
tert-butylbromoacetate (0.088 mL, 0.542 mmol) and K.sub.2CO.sub.3
(0.150 g, 1.08 mmol). The resulting mixture was stirred at ambient
temperature for 18 hours, then filtered through a pad of
Celite.RTM., washing with ethyl acetate. The filtrate was then
concentrated in vacuo. Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O/trifluoroacetic acid) provided the tert-butyl
ester as a white solid (0.156 g, 53%).
[0890] Part B: The tert-butyl ester of part A (0.156 g, 0.289 mmol)
was treated with a solution of 4N HCl in dioxane (1.5 mL) and the
resulting mixture was stirred at ambient temperature for 3.5 hours
at which time additional dioxane (2 mL) was added. After stirring
at ambient temperature for 8 hours the reaction mixture was
concentrated in vacuo. The residue was treated again with a
solution of 4N HCl in dioxane (1.5 mL) at ambient temperature for 4
hours. Diethyl ether was added to the reaction mixture and the
precipitate was collected by filtration to give the title compound
as an off-white solid (0.111 g, 74%). MS MH.sup.+ calculated for
C.sub.21H.sub.24O.sub.7N.sub.2SCl: 483, found 483.
EXAMPLE 81
Preparation of
4-[(4-(4-chloro-3-methylphenoxy)phenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)-
-4-piperidinecarboxamide, monohydrochloride
[0891] ##STR3420##
[0892] Part A: To a suspension of the title compound of Example 79
(0.500 g, 1.08 mmol) in acetonitrile (8.0 mL) were added propargyl
bromide (0.126 mL, 80% solution in toluene, 1.13 mmol) and
K.sub.2CO.sub.3 (0.300 g, 2.17 mmol). The resulting mixture was
stirred at ambient temperature for 24 hours, then filtered through
a pad of Celite.RTM., washing with methanol and the filtrate was
then concentrated in vacuo. Chromatography (on silica, ethyl
acetate) provided the N-propargyl hydroxamate as a tan solid (0.200
g, 40%).
[0893] Part B: To a solution of the N-propargyl hydroxamate of part
A (0.200 g, 0.432 mmol) in acetonitrile (3.0 mL) and H.sub.2O (0.5
mL) was added concentrated HCl (0.05 mL). The resulting mixture was
stirred at ambient temperature for 5 minutes and the concentrated
in vacuo to provide the title compound as a pink solid (0.200 g,
93%). MS MH.sup.+ calculated for C.sub.22H.sub.24O.sub.5N.sub.2SCl:
463, found 463.
EXAMPLE 82
Preparation of
4-[[4-(4-chloro-3-methylphenoxy)phenyl]sulfonyl]-N-hydroxy-1-(2-propenyl)-
-4-piperidinecarboxamide, monohydrochloride
[0894] ##STR3421##
[0895] Part A: To a suspension of the title compound of Example 79
(0.500 g, 1.08 mmol) in acetonitrile (8.0 mL) were added allyl
bromide (0.093 mL, 1.08 mmol) and K.sub.2CO.sub.3 (0.300 g, 2.17
mmol). The resulting mixture was stirred at ambient temperature for
22 hours. Additional allyl bromide (0.054 mL, 1M in acetonitrile,
0.054 mmol) was added and stirring was continued at ambient
temperature for 6 hours. The resulting mixture was filtered through
a pad of Celite.RTM., washing with ethyl acetate and the filtrate
was concentrated in vacuo. Chromatography (on silica,
methanol/ethyl acetate) provided the N-allyl hydroxamate as an
off-white solid (0.080 g, 15%).
[0896] Part B: To a solution of the N-allyl hydroxamate of part A
(0.080 g, 0.172 mmol) in acetonitrile (3.0 mL) and H.sub.2O (1.0
mL) was added concentrated HCl (0.05 mL). The resulting mixture was
stirred at ambient temperature for ten minutes and then
concentrated in vacuo to provide the title compound as a white
solid (0.100 g, quantitative yield). MS MH.sup.+ calculated for
C.sub.22H.sub.26O.sub.5N.sub.2SCl: 465, found 465.
EXAMPLE 83
Preparation of
4-[[4-(4-fluoro-3-methylphenoxy)phenyl]sulfonyl]-N-hydroxy-4-piperidine
carboxamide, monohydrochloride
[0897] ##STR3422##
[0898] Part A: To a solution of the sulfone of part D, Example 79
(5.00 g, 12.45 mmol) in tetrahydrofuran (100 mL) was added
potassium trimethylsilanolate (4.79 g, 37.36 mmol). The resulting
mixture was stirred at ambient temperature for 1.5 hours, diluted
with H.sub.2O and diethyl ether (100 mL). The aqueous layer was
extracted with diethyl ether and the combined organic layers were
washed with H.sub.2O. The aqueous layers were combined and
acidified with 2N HCl (pH=2) and then extracted with ethyl acetate.
The combined organic layers were washed with saturated NaCl and
dried over Na.sub.2SO.sub.4 to provide the acid as an off-white
solid (4.61 g, 96%).
[0899] Part B: To a suspension of the acid of part A (0.830 g, 2.14
mmol) in dichloromethane (10 mL) was added N-methylmorpholine
(0.706 mL, 6.42 mmol) and O-tetrahydro-2H-pyran-2-yl-hydroxylamine
(0.276 g, 2.35 mmol). After stirring at ambient temperature for 5
minutes, PyBroP.RTM. (1.20 g, 2.57 mmol) was added and the
resulting mixture was stirred at ambient temperature for 19 hours.
The mixture was concentrated in vacuo and the residue was
partitioned between H.sub.2O and ethyl acetate. The aqueous layer
was further extracted with ethyl acetate and the combined organic
layers were washed with saturated NaCl and dried over
Na.sub.2SO.sub.4. Chromatography (on silica, ethyl acetate/hexane)
provided the p-fluorosulfone as a white crystalline solid (0.993 g,
95%).
[0900] Part C: To a solution of the p-fluorosulfone of part B
(0.485 g, 0.996 mmol) in N,N-dimethylformamide (5 mL) were added
4-fluoro-3-methylphenol (0.133 mL, 1.20 mmol) and Cs.sub.2CO.sub.3
(0.973 g, 2.99 mmol). The resulting mixture was heated at 60
degrees Celsius for 17 hours. Additional 4-fluoro-3-methylphenol
(0.055 mL, 0.498 mmol) was added and the temperature of the
reaction mixture was increased to 80 degrees Celsius for 4 hours
and then to 100 degrees Celsius for 3 hours. Additional
4-fluoro-3-methylphenol (0.133 mL, 1.20 mmol) was added and the
reaction mixture was heated at 100 degrees Celsius for 7.5 hours.
Additional Cs.sub.2CO.sub.3 was added and heating continued at 100
degrees Celsius for 17 hours. The reaction was cooled to ambient
temperature and then concentrated in vacuo. The residue was
partitioned between H.sub.2O and ethyl acetate. The organic layer
was washed with saturated NaCl and dried over Na.sub.2SO.sub.4.
Chromatography (on silica, ethyl acetate/hexane) provided the
protected hydroxamate as an off-white solid (0.490 g, 83%).
[0901] Part D: To a solution of the protected hydroxamate of part C
(0.479 g, 0.808 mmol) in dioxane (3 mL) and methanol (1 mL) was
added a solution of 4N HCl in dioxane (2.02 mL, 8.08 mmol). The
resulting mixture was stirred at ambient temperature for 1.5 hours.
Diethyl ether (5 mL) was added and the precipitate was collected by
filtration to give the title compound as an off-white solid (0.323
g, 90%). MS MH.sup.+ calculated for
C.sub.19H.sub.22O.sub.5N.sub.2SF: 409, found 409.
EXAMPLE 84
Preparation of
4-[[4-(3-chloro-4-fluorophenoxy)phenyl]sulfonyl]-N-hydroxy-4-piperidine
carboxamide, monohydrochloride
[0902] ##STR3423##
[0903] Part A: To a solution of the p-fluorosulfone of Part B,
Example 83 (0.485 g, 0.996 mmol) in N,N-dimethylformamide (5.0 mL)
were added 4-fluoro-3-chlorophenol (0.176 g, 1.20 mmol) and
Cs.sub.2CO.sub.3 (0.973 g, 2.99 mmol). The resulting mixture was
heated at 60 degrees Celsius for 17 hours, then additional
4-fluoro-3-chlorophenol (0.073 g, 0.498 mmol) was added and the
reaction mixture was heated at 80 degrees Celsius for 24 hours then
increased to 90 degrees Celsius. After heating 90 degrees Celsius
for 7 hours additional 4-fluoro-3-chlorophenol (0.176 g, 1.20 mmol)
was added and heating was contiuned at 90 degrees Celsius for 7.5
hours. Additional Cs.sub.2CO.sub.3 (0.973 g, 2.99 mmol) was added
and the mixture was heated at 90 degrees Celsius for 24 hours.
After cooling to ambient temperature, the reaction mixture was
concentrated in vacuo. The residue was partitioned between H.sub.2O
and ethyl acetate. The organic layer was washed with saturated NaCl
and dried over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as an off-white
solid (0.550 g, 90%).
[0904] Part B: To a solution of the protected hydroxamate of part A
(0.530 g, 0.864 mmol) in dioxane (3 mL) and methanol (1 mL) was
added a solution of 4N HCl in dioxane (2.00 mL, 8.00 mmol).
[0905] The resulting mixture was stirred at ambient temperature for
1.5 hours. Diethyl ether (5 mL) was added and the precipitate was
collected by filtration to give the title compound as an off-white
solid (0.377 g, 94%). MS MH.sup.+ calculated for
C.sub.19H.sub.19O.sub.5N.sub.2SFCl: 429, found 429.
EXAMPLE 85
Preparation of
4-[[4-(4-chlorophenoxy)-phenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)-4-piper-
idinecarboxamide, monohydrochloride
[0906] ##STR3424##
[0907] Part A: To a solution of sulfone of part D, Example 79 (4.53
g, 11.28 mmol) in N,N-dimethylformamide (20 mL) were added
4-chlorophenol (4.41 g, 13.54 mmol) and Cs.sub.2CO.sub.3 (11.03 g,
33.85 mmol) The resulting mixture was heated at 90 degrees Celsius
for 5 hours. After cooling to ambient temperature, the reaction
mixture was concentrated in vacuo. The residue was partitioned
between H.sub.2O and ethyl acetate. The organic layer was washed
with saturated NaCl and dried over Na.sub.2SO.sub.4. Chromatography
(on silica, ethyl acetate/hexane) provided the biaryl ether as a
white solid (4.60 g, 78%).
[0908] Part B: To a solution of the biaryl ether of part A (4.57 g,
8.96 mmol) in dioxane (10 mL) was added a solution of 4N HCl in
dioxane (10 mL). The resulting mixture was stirred at ambient
temperature for 2.5 hours and then additional dioxane (10 mL) was
added. After stirring at ambient temperature for 1.5 hours the
mixture was concentrated in vacuo. The resulting solid was
suspended in dioxane (20 mL) and retreated with a solution of 4N
HCl in dioxane (10 mL). The mixture was stirred at ambient
temperature for 1 hour, methanol (1 mL) was added and stirring was
continued at ambient temperature. After 1 hour, the mixture was
concentrated in vacuo to give the amine as a white solid (4.09 g,
quantitative yield).
[0909] Part C: To a suspension of the amine of part B (4.00 g, 8.96
mmol) in acetonitrile (20 mL) were added propargyl bromide (1.05
mL, 80% solution in toluene, 9.41 mmol) and K.sub.2CO.sub.3 (2.60
g, 18.82 mmol). The resulting mixture was stirred at ambient
temperature for 18 hours, filtered through a pad of Celite.RTM.,
washing with ethyl acetate, and then the filtrate was concentrated
in vacuo to provide the N-propargyl amine as a sticky foam (4.14 g,
quantitative yield).
[0910] Part D: To a suspension of the N-propargyl amine of part C
(4.14 g, 8.96 mmol) in tetrahydrofuran (20 mL) was added potassium
trimethylsilanolate (1.26 g, 9.86 mmol). The resulting mixture was
stirred at ambient temperature for 17 hours and additional
tetrahydrofuran (5 mL) and potassium trimethylsilanolate (0.350 g,
2.73 mmol) were added. After stirring at ambient temperature for 4
hours, additional tetrahydrofuran (5 mL) was added and stirring was
continued at ambient temperature for 24 hours. Additional potassium
trimethylsilanolate (0.115 g, 0.896 mmol) was added and the mixture
was stirred at ambient temperature for 24 hours, at which time,
additional potassium trimethylsilanolate was added and the
resulting mixture was stirred at ambient temperature for another 24
hours. The tetrahydrofuran was removed and the residue was
suspended in dichloromethane (20 mL).
[0911] To the dichloromethane suspension were added
N-methylmorpholine (2.96 mL, 26.9 mmol) and
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (1.15 g, 9.86 mmol),
followed by PyBroP.RTM. (5.01 g, 10.75 mmol). The resulting mixture
was stirred at ambient temperature overnight and then concentrated
in vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The organic layer was washed with saturated NaCl and dried
over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as an off-white
foam (3.29 g, 69%).
[0912] Part E: To a solution of the protected hydroxamate of part D
(3.27 g, 6.13 mmol) in dioxane (21 mL) and methanol (7 mL) was
added a solution of 4N HCl in dioxane (10 mL). The resulting
mixture was stirred at ambient temperature for 4 hours and then
diethyl ether (75 mL) was added. The solids were collected by
filtration, washing with diethyl ether, to give the title compound
as an off-white solid (2.95 g, 99%). MS MH.sup.+ calculated for
C.sub.21H.sub.22O.sub.5N.sub.2SCl: 449, found 449.
EXAMPLE 86
Preparation of
4-[[4-(phenylthio)-phenyl]-sulfonyl]-N-hydroxy-4-piperidine-carboxamide,
monohydrochloride
[0913] ##STR3425##
[0914] Part A: To a solution of the sulfone of part D, Example 79
(0.500 g, 1.25 mmol) in N,N-dimethylformamide (3.0 mL) were added
thiophenol (0.154 mL, 1.50 mmol) and K.sub.2CO.sub.3 (0.518 g, 3.75
mmol). The resulting mixture was stirred at ambient temperature for
24 hours and then concentrated in vacuo. The residue was
partitioned between H.sub.2O and ethyl acetate. The organic layers
were washed with saturated NaCl and dried over Na.sub.2SO.sub.4.
Chromatography (on silica, ethyl acetate/hexane) provided the
biaryl thioether as a clear sticky oil (0.480 g, 78%).
[0915] Part B: To a solution of the biaryl thioether of part A
(2.01 g, 4.09 mmol) in tetrahydrofuran (40 mL) was added potassium
trimethylsilanolate (0.682 g, 5.31 mmol). The resulting mixture was
stirred at ambient temperature for 23 hours and then concentrated
in vacuo. The residue was then suspended in dichloromethane (20 mL)
then N-methylmorpholine (1.35 mL, 12.27 mmol) and 50% aqueous
hydroxylamine (0.265 mL, 4.50 mmol) were added, followed by
PyBroP.RTM. (2.29 g, 4.91 mmol). The resulting mixture was stirred
at ambient temperature for 16 hours and then concentrated in vacuo.
The residue was partitioned between ethyl acetate and H.sub.2O. The
organic layer was washed with saturated NaCl and dried over
Na.sub.2SO.sub.4. A portion of the sample was subjected to reverse
phase chromatography (on silica,
acetonitrile/H.sub.2O/trifluoroacetic acid) to give the hydroxamate
as an off-white solid (0.190 g).
[0916] Part C: To a solution of the hydroxamate of part B (0.181 g,
0.367 mmol) in dioxane (5 mL) and methanol (1 mL) was added a
solution of 4N HCl in dioxane (3 mL). The resulting mixture was
stirred at ambient temperature for 3 hours and then concentrated in
vacuo to give the title compound as an off-white solid (0.170 g,
quantitative yield). MS MH.sup.+ calculated for
C.sub.18H.sub.21O.sub.4N.sub.2S.sub.2: 393, found 393.
EXAMPLE 87
Preparation of
4-[(hydroxyamino)-carbonyl]-4-[[4-(phenylthio)phenyl]-sulfonyl]-1-piperid-
ineacetic acid, monohydrochloride
[0917] ##STR3426##
[0918] Part A: To a solution of the compound of Example 86 (0.322
g, 0.751 mmol) in acetonitrile (4.0 mL) were added
tert-butylbromoacetate (0.121 mL, 0.751 mmol) and K.sub.2CO.sub.3
(0.207 g, 1.50 mmol). The resulting mixture was stirred at ambient
temperature for 18 hours, filtered through a pad of Celite.RTM.,
washing with ethyl acetate, and the filtrate was concentrated in
vacuo. Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O/trifluoroacetic acid) provided the tert-butyl
ester as an off-white solid (0.150 g, 406).
[0919] Part B: The tert-butyl ester of part A (0.145 g, 0.286 mmol)
was treated with a solution of 4N HCl in dioxane (3.0 mL). The
resulting mixture was stirred at ambient temperature for 7 hours,
diethyl ether was added and the precipitate was collected by
filtration. Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O/HCl) provided the title compound as an
off-white solid (0.060 g, 43%). MS MH.sup.+ calculated for
C.sub.20H.sub.23O.sub.6N.sub.2S.sub.2: 451, found 451.
EXAMPLE 88
Preparation of
4-[[4-(4-chlorophenoxy)-phenyl]sulfonyl]-4-[(hydroxyamino)-carbonyl]-1-pi-
peridineacetic acid, monohydrochloride
[0920] ##STR3427##
[0921] Part A: To a suspension of 4-bromopiperidine hydrobromide
(40.09 g, 0.16 mol) in tetrahydrofuran (200 mL) was slowly added
triethylamine (45.4 mL, 0.33 mol), followed by di-tert-butyl
dicarbonate (37.4 g, 0.17 mol), which was added in several
portions. The resulting mixture was stirred at ambient temperture
for 17 hours then filtered and concentrated in vacuo. The solids
were washed with hexanes and then collected by filtration to give
the Boc-piperidine compound as an amber oil (45.8 g, >100%).
[0922] Part B: To a solution of 4-fluorophenol (25.0 g, 0.20 mol)
in acetone (150 mL), degassed with N.sub.2, was added
Cs.sub.2CO.sub.3 (79.7 g, 0.25 mol). After degassing the resulting
mixture with N.sub.2 for 5 minutes, the Boc-piperidine compound of
part A (43.1 g, 0.16 mol) was added. The resulting mixture was
stirred at ambient temperature for 22 hours and then filtered
through a pad of Celite.RTM., washing with acetone. The residue was
washed with diethyl ether and the solids were collected by
filtration to provide the sulfide as a yellow oil (47.6 g,
93%).
[0923] Part C: To a solution of the sulfide of part B (47.3 g, 0.15
mol) in dichloromethane (350 mL), cooled to zero degrees Celsius,
was added m-chloroperoxy-benzoic acid (80 g, 57-86%). Additional
dichloromethane (50 mL) was added and the mixture was stirred at
zero degrees Celsius for 1 hour and then for 1.5 hours at ambient
temperature. The reaction mixture was diluted with H.sub.2O and
aqueous sodium meta-bisulfite (4.0 g in 50 mL) was added. The
mixture was concentrated in vacuo and then extracted with diethyl
ether and ethyl acetate. The combined organic layers were washed
with 10% NH.sub.4OH, saturated NaCl and dried over
Na.sub.2SO.sub.4. Recrystallization from ethyl acetate provided the
sulfone as a white solid (18.9 g, 36%).
[0924] Part D: To a solution of the sulfone of part C (8.00 g, 23.3
mmol) in N,N-dimethylformamide (40 mL) were added 4-chlorophenol
(3.59 g, 27.96 mmol) and K.sub.2CO.sub.3 (22.77 g, 69.90 mmol). The
resulting mixture was heated at 60 degrees Celsius for 4 hours and
then increased to 80 degrees Celsius for 7 hours. The reaction was
cooled to ambient temperature and then concentrated in vacuo. To
the residue was added H.sub.2O (100 mL) and the solids were
collected by filtration to give the biaryl ether as an off-white
solid (10.5 g, 99%).
[0925] Part E: To a solution of the biaryl ether of part D (5.00 g,
11.1 mmol) in tetrahydrofuran (50 mL), cooled to zero degrees
Celsius, was added lithium bis(trimethylsilyl)amide (13.3 mL, 1M in
tetrahydrofuran, 13.3 mmol), at such a rate that the temperature of
the reaction mixture never exceeded 2 degrees Celsius. The
resulting mixture was stirred at zero degrees Celsius for 30
minutes, then dimethyl carbonate (1.40 mL, 16.6 mmol) was slowly
added at such a rate that the temperature of the reaction mixture
never exceeded 2 degrees Celsius. The resulting mixture was then
slowly permitted to warm to ambient temperature.
[0926] After 17 hours, the reaction was recooled to zero degrees
Celsius and additional lithium bis(trimethylsilyl)amide (5.50 mL,
1M in tetrahydrofuran, 5.50 mmol) was slowly added at a rate such
that the temperature of the reaction never exceeded 2 degrees
Celsius. After stirring for 30 minutes, dimethyl carbonate (0.048
mL, 0.570 mmol) was added and stirring was continued at zero
degrees Celsius for 45 minutes. Additional lithium
bis(trimethylsilyl)amide (0.500 mL, 1M in tetrahydrofuran, 0.500
mmol) was slowly added and after 1 hour additional dimethyl
carbonate (0.010 mL, 0.119 mmol) was added. After stirring at zero
degrees Celsius for 20 minutes, saturated NH.sub.4Cl was added and
the reaction mixture was then concentrated in vacuo. The residue
was diluted with H.sub.2O and extracted with ethyl acetate. The
combined organic layers were washed with saturated NaCl and dried
over Na.sub.2SO.sub.4. Recrystallization from methanol provided the
methyl ester as a white crystalline solid (3.56 g, 63%).
[0927] Part F: To a solution of the methyl ester of part E (3.54 g,
6.94 mmol) in dioxane (18 mL) and methanol (6 mL) was added a
solution of 4N HCl in dioxane (10 mL). The resulting mixture was
stirred at ambient temperature for 5 hours and then concentrated in
vacuo to provide the amine as an off-white solid (3.10 g,
quantitative yield).
[0928] Part G: To a solution of the amine of part F (1.50 g, 3.36
mmol) in acetonitrile (15 mL) were added tert-butylbromoacetate
(0.570 mL, 3.53 mmol) and K.sub.2CO.sub.3 (1.16 g, 8.40 mmol). The
resulting mixture was stirred at ambient temperature for 3 hours,
then filtered through a pad of Celite.RTM., washing with ethyl
acetate. The filtrate was concentrated in vacuo to provide the
tert-butyl ester as a pale yellow oil (1.83 g, >100%).
[0929] Part H: To a solution of the tert-butyl ester of part G
(1.76 g, 3.36 mmol) in tetrahydrofuran (15 mL) was added potassium
trimethylsilanolate (0.475 g, 3.70 mmol). The resulting mixture was
stirred at ambient temperature overnight (about 18 hours) and
additional tetrahydrofuran (10 mL) was added. After stirring at
ambient temperature overnight (about 18 hours), additional
potassium trimethylsilanolate (0.475 g, 3.70 mmol) was added. The
resulting mixture was stirred at ambient temperature for 4 hours
then diluted with H.sub.2O. The reaction mixture was acidified
(pH-7) with 1N HCl and then concentrated in vacuo. The solids were
washed with diethyl ether and then with H.sub.2O to provide the
acid as an off-white solid (0.597 g, 32%).
[0930] Part I: To a suspension of the acid of part H (0.597 g, 1.17
mmol) in dichloromethane (5 mL) was added N-methylmorpholine (0.386
mL, 3.51 mmol) and O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.151
g, 1.29 mmol), followed by PyBroP.RTM. (0.655 g, 1.40 mmol). The
resulting mixture was stirred at ambient temperature overnight
(about 18 hours) and then concentrated in vacuo. The residue was
partitioned between H.sub.2O and ethyl acetate. The organic layer
was washed with saturated NaCl and dried over Na.sub.2SO.sub.4.
Chromatography (on silica, ethyl acetate/hexane) provided the
protected hydroxamate as a white foam (0.510 g, 72%).
[0931] Part J: The protected hydroxamate of part I (0.510 g, 0.837
mmol) was treated with a solution of 4N HCl in dioxane (10 mL). The
resulting mixture was stirred at ambient temperature for 24 hours,
then diethyl ether (20 mL) was added and the solids were collected
by filtration to provide the title compound as a white solid (0.370
g, 87%). MS MH.sup.+ calculated for
C.sub.20H.sub.22O.sub.7N.sub.2SCl: 469, found 469.
EXAMPLE 89
Preparation of
4-[[4-(4-chlorophenoxy)-phenyl]sulfonyl]-N-hydroxy-1-[2-(4-morpholinyl)et-
hyl]-4-piperidine-carboxamide, dihydrochloride
[0932] ##STR3428##
[0933] Part A: To a solution of the amine of part F, Example 88
(1.00 g, 2.24 mmol) in acetonitrile (10 mL) were added
4-(2-chloroethyl)morpholine (0.438 g, 2.35 mmol) and
K.sub.2CO.sub.3 (1.24 g, 8.96 mmol). The resulting mixture was
stirred at ambient temperature for 1.5 hours then a catalytic
amount of NaI was added and stirring was continued at ambient
temperature for 21 hours. The temperature of the reaction mixture
was then increased to 60 degrees Celsius for 29 hours. After
cooling to ambient temperature, the reaction mixture was filtered
through a pad of Celite.RTM., washing with ethyl acetate. The
filtrate was concentrated in vacuo to provide the ester as an oily
solid (1.15 g, 98%).
[0934] Part B: To a solution of the ester of part A (1.15 g, 2.20
mmol) in tetrahydrofuran (10 mL) was added potassium
trimethylsilanolate (0.579 g, 4.51 mmol). The reaction mixture was
stirred at ambient temperature for 4 hours then additional
tetrahydrofuran (10 mL) was added and stirring was continued at
ambient temperature overnight (about 18 hours). The reaction
mixture was diluted with H.sub.2O (10 mL) and acidified (pH-7) with
1N HCl. The resulting precipitate was collected by filtration to
provide the acid as a gray solid (0.753 g, 72%).
[0935] Part C: To a suspension of the acid of part B (0.750 g, 1.47
mmol) in dichloromethane (7 mL) were added N-methylmorpholine
(0.500 mL, 4.55 mmol), and O-tetrahydro-2H-pyran-2-yl-hydroxylamine
(0.198 g, 1.62 mmol), followed by PyBroP.RTM. (0.822 g, 1.76 mmol).
The resulting mixture was stirred at ambient temperature for 24
hours then additional N-methylmorpholine (0.242 mL, 2.21 mmol),
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.052 g, 0.441 mmol) and
PyBroP.RTM. (0.343 g, 0.735 mmol) were added. The resulting mixture
was stirred at ambient temperature for 23 hours and then additional
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.017 g, 0.145 mmol) and
PyBroP.RTM. (0.073 g, 0.157 mmol) were added. The resulting mixture
was stirred at ambient temperature overnight (about 18 hours) and
then concentrated in vacuo. The residue was partitioned between
H.sub.2O and ethyl acetate. The organic layer was washed with
saturated NaCl and dried over Na.sub.2SO.sub.4. Chromatography (on
silica, methanol/chloroform) provided the protected hydroxamate as
an off-white solid (0.750 g, 84%).
[0936] Part D: The protected hydroxamate of part C (0.730 g, 1.20
mmol) was treated with a solution of 4N HCl in dioxane (10 mL) and
methanol (1 mL). The resulting mixture was stirred at ambient
temperature for 1 hour, then diethyl ether (20 mL) was added and
the solids were collected by filtration to provide the title
compound as a pale yellow solid (0.625 g, 87%). MS MH.sup.+
calculated for C.sub.24H.sub.31O.sub.6N.sub.3SCl: 525, found
525.
EXAMPLE 90
Preparation of
4-[[4-(4-chlorophenoxy)-phenyl]sulfonyl]-N-hydroxy-N'-(1-methylethyl)-1,4-
-piperidine dicarboxamide
[0937] ##STR3429##
[0938] Part A: To a suspension of the amine of part F, Example 88
(0.600 g, 1.34 mmol) in dichloromethane (5 mL) were added
triethylamine (0.411 mL, 2.95 mmol) and isopropyl isocyanate (0.198
mL, 2.01 mmol). The resulting mixture was stirred at ambient
temperature for 2 hours then diluted with dichloromethane (50 mL).
The mixture was washed with H.sub.2O, saturated NaCl and dried over
Na.sub.2SO.sub.4 to give the urea as an off-white solid (0.670 g,
>100%).
[0939] Part B: To a solution of the urea of part A (0.640 g, 1.29
mmol) in tetrahydrofuran (10 mL) was added potassium
trimethylsilanolate (0.199 g, 1.55 mmol). The resulting mixture was
stirred at ambient temperature for 17 hours at which time
additional potassium trimethylsilanolate (0.015 g, 0.117 mmol) was
added. The resulting mixture was stirred for an additional 24 hours
then the tetrahydrofuran was removed by blowing N.sub.2 over the
mixture. To a suspension of the residue in dichloromethane (5 mL)
were added N-methylmorpholine (0.426 mL, 3.87 mmol) and
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.181 g, 1.55 mmol),
followed by PyBroP.RTM. (0.902 g, 1.94 mmol). The resulting mixture
was stirred at ambient temperature for 7 hours and then
concentrated in vacuo. The residue was partitioned between H.sub.2O
and ethyl acetate. The organic layer was washed with saturated NaCl
and dried over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as an off-white
solid (0.330 g, 44%).
[0940] Part C: To a solution of the protected hydroxamate of part B
(0.330 g, 0.569 mmol) in dioxane (3 mL) and methanol (1 mL) was
added a solution of 4N HCl in dioxane (10 mL). The resulting
mixture was stirred at ambient temperature for 3.5 hours then
diethyl ether was added. The solids were collected by filtration to
give the title compound as a white solid (0.259 g, 92%). MS
MH.sup.+ calculated for C.sub.22H.sub.27O.sub.6N.sub.3SCl: 496,
found 496.
EXAMPLE 91
Preparation of
4-[(4'-chloro[1,1'-biphenyl]-4-yl)sulfonyl]-N-hydroxy-4-piperidinecarboxa-
mide, monohydrochloride
[0941] ##STR3430##
[0942] Part A: To a solution of 4-bromothiophenol (16.98 g, 89.80
mmol) in acetone (200 mL), degassed with N.sub.2' was added
K.sub.2CO.sub.3 (12.41 g, 89.80 mmol). After degassing the
resulting mixture with N.sub.2 for 5 minutes, the Boc-piperidine
compound of part A, Example 88 (21.57 g, 81.64 mmol) was added. The
resulting mixture was stirred at ambient temperature for 19 hours
and then filtered through a pad of Celite.RTM., washing with
acetone. The residue was washed with diethyl ether and the solids
were collected by filtration to provide the sulfide as a green oil
(31.7 g, >100%).
[0943] Part B: To a solution of the sulfide of part A (31.68 g,
81.64 mmol) in dichloromethane (200 mL), cooled to zero degrees
Celsius, was added m-chloroperoxybenzoic acid (56.35 g, 50-60%,
163.28 mmol). The resulting mixture became very thick, and 20'
additional dichloromethane (100 mL) was added. The mixture was
stirred at zero degrees Celsius for 1.5 hours and then at ambient
temperature for 1.5 hours. The reaction mixture was diluted with
H.sub.2O (300 mL) and aqueous sodium meta-bisulfte (8.00 g, 42.08
mmol in 50 mL of H.sub.2O) was added. The dichloromethane was
removed in vacuo and the aqueous reaction mixture was extracted
with ethyl acetate. The combined organic layers were washed with
10% NH.sub.4OH, saturated NaCl and dried over Na.sub.2SO.sub.4.
Concentration in vacuo provided the sulfone as a yellow oil (33.42
g, >100%).
[0944] Part C: To a solution of the sulfone of part B (7.80 g,
19.34 mmol) in tetrahydrofuran (100 mL), cooled to zero degrees
Celsius, was added lithium bis(trimethylsilyl)amide (23.8 mL, 1M in
tetrahydrofuran, 23.8 mmol) at such a rate that the temperature of
the reaction never exceeded 2 degrees Celsius. After stirring at
zero degrees Celsius for 30 minutes a solution of methyl
chloroformate (2.30 mL, 29.8 mmol) in tetrahydrofuran (5 mL) was
added at such a rate that the temperature of the reaction never
exceeded 2 degrees Celsius. The resulting mixture was then slowly
allowed to warm to ambient temperature. The mixture was diluted
with saturated NH.sub.4Cl and the tetrahydrofuran was removed in
vacuo. The aqueous layer was extracted with ethyl acetate. The
combined organic layers were washed with saturated NaCl and dried
over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the ester as a yellow solid (6.33 g,
69%).
[0945] Part D: To a solution of the ester of part C (4.74 g, 10.28
mmol) in dimethoxyethane (50 mL) were added 4-chlorophenylboronic
acid (1.77 g, 11.30 mmol), aqueous Cs.sub.2CO.sub.3 (25 mL, 2.0 M,
50.0 mmol) and tetrakis(triphenylphosphine)palladium (0) (1 g). The
resulting mixture was stirred at ambient temperature for 3 days.
The reaction mixture was filtered through a pad of Celite.RTM.,
washing with ethyl acetate, and the filtrate was concentrated in
vacuo. Chromatography (on silica, ethyl acetate/hexane) provided
the biphenyl compound as an off-white solid (4.16 g, 82%).
[0946] Part E: To a solution of the biphenyl compound of part D
(1.50 g, 3.04 mmol) in tetrahydrofuran (10 mL) was added potassium
trimethylsilanolate (0.468 g, 3.65 mmol). The resulting mixture was
stirred at ambient temperature for 1 hour, additional
tetrahydrofuran (5 mL) was added and the reaction mixture was
stirred at ambient temperature overnight (about 18 hours).
Additional tetrahydrofuran (15 mL) was added and the mixture was
stirred for another 26 hours at ambient temperature. Additional
potassium trimethylsilanolate (0.040 g, 0.304 mmol) was added and
the mixture was stirred at ambient temperature overnight (about 18
hours) and then the solvent was removed by blowing N.sub.2 over the
reaction mixture.
[0947] To a suspension of the residue in dichloromethane (20 mL)
were added added N-methylmorpholine (1.00 mL, 9.12 mmol),
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.427 g, 3.65 mmol),
followed by PyBroP.RTM. (2.13 g, 4.56 mmol). The resulting mixture
was stirred at ambient temperature for 24 hours and then
concentrated in vacuo. The residue was partitioned between H.sub.2O
and ethyl acetate. The organic layer was washed with saturated NaCl
and dried over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as a white solid
(1.25 g, 71%).
[0948] Part F: To a solution of the protected hydroxamate of part E
(1.25 g, 2.16 mmol) in dioxane (3 mL) and methanol (1 mL) was added
a solution of 4N HCl in dioxane (10 mL). The resulting mixture was
stirred at ambient temperature for 3.5 hours, then diethyl ether
(20 mL) was added. The solids were collected by filtration to give
the title compound as a white solid (0.900 g, 97%). MS MH.sup.+
calculated for C.sub.18H.sub.20O.sub.4N.sub.2SCl: 395, found
395.
EXAMPLE 92
Preparation of
N-hydroxy-4-[[4-(methylphenylamino)phenyl]sulfonyl]-4-piperidinecarboxami-
de, monohydrochloride
[0949] ##STR3431##
[0950] Part A: To a solution of the ester of part C, Example 91
(1.00 g, 2.17 mmol) in toluene (4 mL) were added N-methylaniline
(0.282 mL, 2.60 mmol), Cs.sub.2CO.sub.3 (0.990 g, 3.04 mmol),
tris(dibenzylideneacetone)-dipalladium(0) (0.018 g, 0.02 mmol) and
(R)-(+)-2,2' bis(diphenylphosphino)1,1'-binaphthyl (BINAP; 0.021 g,
0.033 mmol). The resulting mixture was heated to 100 degrees
Celsius for 20 hours. After cooling to ambient temperature, diethyl
ether was added, the mixture was filtered through a pad of
Celite.RTM., washing with diethyl ether, and the filtrate was
concentrated in vacuo. Chromatography (on silica, ethyl
acetate/hexane) provided the aniline as a yellow sticky gum (0.930
g, 88%).
[0951] Part B: To a solution of the aniline of part A (0.930 g,
1.90 mmol) in tetrahydrofuran (10 mL) was added potassium
trimethylsilanolate (0.293 g, 2.28 mmol). The resulting mixture was
stirred at ambient temperature for 19 hours and then additional
potassium trimethylsilanolate (0.024 g, 0.190 mmol) was added.
After stirring at ambient temperature overnight (about 18 hours)
the solvent was removed by blowing N.sub.2 over the mixture.
[0952] To a suspension of the residue in dichloromethane (10 mL)
were added added N-methylmorpholine (0.627 mL, 5.70 mmol),
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.267 g, 2.28 mmol),
followed by PyBroP.RTM. (1.33 g, 2.85 mmol). The resulting mixture
was stirred at ambient temperature for 2 days and then concentrated
in vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The organic layer was washed with saturated NaCl and dried
over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as a white solid
(0.860 g, 79%).
[0953] Part C: To a solution of the protected hydroxamate of part B
(0.890 g, 1.55 mmol) in dioxane (3 mL) and methanol (1 mL) was
added a solution of 4N HCl in dioxane (5 mL). The resulting mixture
was stirred at ambient temperature for 1 hour, then diethyl ether
(15 mL) was added. The solids were collected by filtration to give
the title compound as a white solid (0.529 g, 80%). MS MH.sup.+
calculated for C.sub.19H.sub.24O.sub.4N.sub.3S: 390, found 390.
EXAMPLE 93
Preparation of
4-[[4-(4-chlorophenoxy)-phenyl]sulfonyl]-N-hydroxy-4-piperidinecarboxamid-
e, monohydrochloride
[0954] ##STR3432##
[0955] Part A: To a suspension of resin I (4.98 g, 5.87 mmol) in
1-methyl-2-pyrrolidinone (45 mL), in a peptide flask, were added
the acid of part A, Example 83 (4.55 g, 11.74 mmol),
benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonim
hexafluorophosphate (6.11 g, 11.74 mmol) and N-methylmorpholine
(2.58 mL, 23.48 mmol). The resulting mixture was agitated at
ambient temperature for 14 hours. The resin was then collected by
filtration, the filtrate was removed and set aside, and the resin
was washed with N,N-dimethylformamide, H.sub.2O,
N,N-dimethylformamide, methanol, dichloromethane and finally with
diethyl ether. The resin was dried in vacuo at ambient temperature
to give the resin bound p-fluorosulfone as a yellow solid (6.72 g,
95%).
[0956] The filtrate was diluted with H.sub.2O and extracted with
ethyl acetate. The aqueous layer was acidified (pH-2.0) with 2N HCl
and then extracted with ethyl acetate. The organic layer was washed
with saturated NaCl and dried over Na.sub.2SO.sub.4. The resulting
residue was dissolved in 1-methyl-2-pyrrolidinone (40 mL), the
above resin was added, followed by N-methylmorpholine (1.50 mL,
13.64 mmol) and benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonim
hexafluorophosphate (3.05 g, 5.86 mmol). The resulting mixture was
agitated at ambient temperature for 3.5 hours. The resin was then
collected by filtration and washed with N,N-dimethylformamide,
H.sub.2O, N,N-dimethylformamide, methanol, dichloromethane and
finally with diethyl ether. The resin was dried in vacuo at ambient
temperature to give the resin bound p-fluorosulfone as a pale
orange solid (6.34 g, 89%). The loading (0.78 mmol/g) was
determined by cleaving a small portion of the resin bound
p-fluorosulfone with 95% trifluoroacetic acid/H.sub.2O.
[0957] Part B: To a suspension of the resin bound p-fluorosulfone
(0.700 g, 0.546 mmol) in 1-methyl-2-pyrrolidinone (3 mL) was added
p-chlorophenol (0.702 g, 5.46 mmol) and Cs.sub.2CO.sub.3 (1.78 g,
5.46 mmol). The resulting mixture was heated to 110 degrees Celsius
for 13 hours. The resin was then collected by filtration and washed
consecutively with N,N-dimethylformamide, H.sub.2O,
N,N-dimethylformamide, 2N HCl, N,N-dimethylformamide, methanol, and
dichloromethane. The resulting resin was resubjected to the above
reaction conditions for 3 hours. The resin was then collected by
filtration and washed consecutively with N,N-dimethylformamide,
H.sub.2O, N,N-dimethylformamide, 2N HCl, N,N-dimethylformamide,
methanol, and dichloromethane. The solid was dried in vacuo at
ambient temperature to provide the resin bound hydroxamate as an
orange solid (0.692 g, 91%).
[0958] Part C: The resin bound hydroxamate of part B (0.692 g,
0.540 mmol) was treated with 95% trifluoroacetic acid/H.sub.2O (3
mL) for 1 hour at ambient temperature. The resin was filtered and
washed with 95% trifluoroacetic acid/H.sub.2O (3 mL) and then
dichloromethane (2.times.3 mL). The filtrate was then evaporated.
Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O/trifluoroacetic acid) provided the
hydroxamate. The resulting solid was dissolved in acetonitrile (5
mL) and H.sub.2O (0.5 mL) and treated with concentrated HCl. The
resulting mixture was stirred at ambient temperature for 5 minutes
and the concentrated in vacuo to provide the title compound as an
off-white solid (0.220 g, 91%). MS MH.sup.+ calculated for
C.sub.18H.sub.20O.sub.5N.sub.2SCl: 411, found 411.
EXAMPLE 94
Preparation of
Tetrahydro-N-hydroxy-4-[(4-phenoxyphenyl)sulfonyl]-2H-pyran-4-carboxamide
[0959] ##STR3433##
[0960] Part A: To a stirred solution of the methyl ester compound
of Example 55, part C, (0.96 g, 3.2 mmol) in N,N-dimethylformamide
(30 mL) was added phenol (0.3 g, 3.2 mmol), followed by cesium
carbonate (3.2 g, 10 mmol). The resulting composition was heated to
70 degrees Celsius for 5 hours. The solution remained at ambient
temperature for 18 hours, was diluted with H.sub.2O and extracted
with ethyl acetate. The organic layer was washed with
half-saturated NaCl and dried over sodium sulfate. The solvent was
removed by rotary evaporation to yield the desired phenoxy compound
(1.1 g, 92%).
[0961] Part B: Sodium hydroxide (1 g, 25 mmol) was added to a
solution of the phenoxy compound of part A (1.1 g, 2.9 mmol) in THF
(10 mL) and ethanol (10 mL). The resulting solution was stirred at
ambient temperature for 1 hour. The solution was then heated to 80
degrees Celsius for 1 hour. The solvent was removed by rotary
evaporation and the resulting sodium salt was acidified with 1 N
HCl (50 mL) and extracted with ethyl acetate. The organic layer was
dried over Na.sub.2SO.sub.4. The solvent was removed by rotary
evaporation to yield the desired phenoxy carboxylic acid (1.1 g,
99).
[0962] Part C: To a stirred solution of the phenoxy carboxylic acid
of part B (1.1 g, 3 mmol) in DMF (7 mL) was added
N-hydroxybenzotriazole-H.sub.2O (0.623 g, 4.6 mmol), followed by
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride
(0.634 g, 3.3 mmol). After 10 minutes, a 50% aqueous hydroxylamine
solution was added (2 mL, 30 mmol) and the solution was stirred at
ambient temperature for 18 hours. The solution was diluted with
saturated sodium bicarbonate and extracted with ethyl acetate. The
organic layer was washed with H.sub.2O and followed by
half-saturated NaCl and then dried over Na.sub.2SO.sub.4. Reverse
phase chromatography (on silica, acetonitrile/H.sub.2O) provided
the title compound as a white solid (0.37 g, 33%). HRMS (ES.sup.+)
MH.sup.+ for C.sub.18H.sub.19NO.sub.6S 378.1011. Found:
378.0994.
EXAMPLE 95
Preparation of
Tetrahydro-N-hydroxy-4-[[4-(phenylthio)phenyl]sulfonyl]-2H-pyran-4-carbox-
amide
[0963] ##STR3434##
[0964] Part A: To a stirred solution under a nitrogen atmosphere of
the methyl ester of Example 55, part C, (1.02 g, 3.4 mmol) in
N,N-dimethylformamide (20 mL) was added thiophenol (0.37 g, 3.4
mmol), followed by cesium carbonate (3.3 g, 10.1 mmol) and the
solution was heated to 70 degrees Celsius for 17 hours. The
solution remained at ambient temperature for 1 hour, was diluted
with H.sub.2O and extracted with ethyl acetate. The organic layer
was washed with half-saturated NaCl and dried over
Na.sub.2SO.sub.4. Chromatography (on silica, ethyl acetate/hexane)
provided the S-phenyl compound (0.6 g, 41%).
[0965] Part B: To a stirred solution of the S-phenyl compound of
part A (0.6 g, 1.4 mmol) in THF (10 mL) and ethanol (10 mL) was
added NaOH (0.8 g, 20 mmol). The solution was heated to 80 degrees
Celsius for 1 hour. The solution remained at ambient temperature
for 18 hours. The solvent was removed by rotary evaporation, the
resulting sodium salt was acidified with 1 N HCl (25 mL), extracted
with ethyl acetate, and the organic layer was dried over sodium
sulfate. The solvent was removed by rotary evaporation to yield the
desired S-phenyl carboxylic acid (0.6 g, quantitative yield).
[0966] Part C: To a stirred solution of the S-phenyl carboxylic
acid of part B (0.6 g, 1.5 mmol) in DMF (6 mL) was added
N-hydroxybenzotriazole-H.sub.2O (0.30 g, 2.2 mmol), followed by
1-[3-(dimethylamino)-propyl]-3-ethylcarbodiimide hydrochloride
(0.32 g, 1.6 mmol). After 10 minutes, a 50% aqueous hydroxylamine
solution was added (1.5 mL, 22 mmol) and the solution was stirred
at ambient temperature 42 hours. The solution was diluted with
saturated sodium bicarbonate and extracted with ethyl acetate. The
organic layer was washed with H.sub.2O, followed by half-saturated
NaCl and dried over sodium sulfate. Reverse phase chromatography
(on silica, acetonitrile/H.sub.2O) provided the title compound as a
white solid (0.15 g, 26%). HRMS (ES.sup.+) MH.sup.+ for
C.sub.18H.sub.19NO.sub.5S.sub.2 394.0783. Found: 394.0753.
EXAMPLE 96
Preparation of
4-[[4-(3,4-dimethyl-phenoxy)phenyl]sulfonyl]tetrahydro-N-hydroxy-2H-pyran-
-4-carboxamide
[0967] ##STR3435##
[0968] Part A: To a stirred solution of the methyl ester Example
55, part C, (1.04 g, 3.3 mmol) in N,N-dimethylformamide (30 mL) was
added 3,4-dimethylphenol (0.4 g, 3.3 mmol), followed by cesium
carbonate (3.2 g, 10 mmol). The resulting solution was heated to 88
degrees Celsius for 5 hours. The solution was concentrated by
rotary evaporation, diluted with H.sub.2O and extracted with ethyl
acetate. The organic layer dried over MgSO.sub.4. The solvent was
removed by rotary evaporation to yield the desired dimethylphenoxy
compound (1.2 g, 91%).
[0969] Part B: To a solution of the dimethylphenoxy compound of
part A (1.2 g, 3 mmol) in THF (10 mL) and ethanol (10 mL) was added
NaOH (1 g, 25 mmol). The resulting solution was heated to 80
degrees Celsius for 1 hour. The solvent was removed by rotary
evaporation, the resulting sodium salt was acidified with 1 N HCl
(50 mL) and extracted with ethyl acetate. The organic layer was
dried over sodium sulfate. The solvent was removed by rotary
evaporation to yield the desired dimethylphenoxy carboxylic acid
(1.2 g, quantitative yield).
[0970] Part C: To a stirred solution of the dimethylphenoxy
carboxylic acid of part B (1.2 g, 3 mmol) in DMF (7 mL) was added
N-hydroxybenzotriazole-H.sub.2O (0.623 g, 4.6 mmol), followed by
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride
(0.634 g, 3.3 mmol). After 10 minutes, a 50% aqueous hydroxylamine
solution was added (2 mL, 30 mmol) and the solution was stirred at
ambient temperature 18 hours. The solution was diluted with
saturated sodium bicarbonate and extracted with ethyl acetate. The
organic layer was washed with H.sub.2O and followed half-saturated
NaCl and dried over Na.sub.2SO.sub.4. Reverse phase chromatography
(on silica, acetonitrile/H.sub.2O) provided the title compound as a
white solid (0.52 g, 43%). HRMS (ES.sup.+) MH.sup.+ for
C.sub.20H.sub.23NO.sub.6S 406.1324. Found: 406.1302.
EXAMPLE 97
Preparation of
Tetrahydro-N-hydroxy-4-[[4-[(6-methyl-3-pyridinyl)oxy]phenyl]-sulfonyl]-2-
H-pyran-4-carboxamide, monohydrochloride
[0971] ##STR3436##
[0972] Part A: To a stirred solution of the methyl ester of Example
55, Part C, (1.02 g, 3.4 mmol) in N,N-dimethylformamide (20 mL) was
added S-hydroxy-2-methyl-pyridine (0.54 g, 5 mmol), followed by
cesium carbonate (3.2 g, 10 mmol). The resulting solution was
heated to 70 degrees Celsius for 5 hours. The solution remained at
ambient temperature for 4 days, then was diluted with H.sub.2O and
extracted with ethyl acetate. The organic layer was washed with
half-saturated NaCl and dried over sodium sulfate. The solvent was
removed by rotary evaporation to yield a heavy oil from which the
desired white methylpyridine compound crystallized at ambient
temperature in vacuo (1.2 g, 94%).
[0973] Part B: To a solution of the methyl pyridine compound of
part A (1.2 g, 3.2 mmol) in THF (13 mL) was added potassium
trimethylsilanoate (0.5 g, 3.5 mmol). The resulting solution was
stirred at ambient temperature for 18 hours, during which time a
gel formed. The solvent was removed by rotary evapotation to yield
the desired methylpyridine carboxylic acid (1.4 g, quantitative
yield).
[0974] Part C: To a stirred solution of the methylpyridine
carboxylic acid of part B (1.4 g, 3.2 mmol) in methylene chloride
(10 mL) was added bromo-tris-pyrrolidino-phosphonium
hexafluorophosphate (1.79 g, 3.8 mmol), followed by
4-methylmorpholine (0.97 g, 9.6 mmol), followed by
O-tetrahydro-2H-pyran-yl-hydroxylamine (0.41 g, 3.5 mmol) and the
solution was stirred at ambient temperature for 1.5 hours. The
solution was filtered to remove a precipitate and the solvent was
removed by rotary evaporation. Chromatography (on silica, ethyl
acetate/hexane) provided the O-tetrahydropyran methyl pyridine as a
white solid (1.48 g, 97%).
[0975] Part D: Methanol (3 mL) was added to a stirred solution of
the O-tetrahydropyran methyl pyridine of part C (1.48 g, 3.1 mmol)
in 4 N HCl in dioxane (5 mL). The solution was stirred at ambient
temperature for 3 hours and poured into ethyl ether. The resulting
precipitate was collected by vacuum filtration. Reverse phase
chromatography (on silica, acetonitrile/H.sub.2O/HCl) provided the
title compound as a white solid (0.64 g, 53%)). HRMS (ES.sup.+)
MH.sup.+ for C.sub.18H.sub.20N.sub.2O.sub.6S 393.1120. Found:
393.1110.
EXAMPLE 98
Preparation of
Tetrahydro-N-hydroxy-4-[[4-[(6-methyl-2-pyridinyl)oxy]phenyl]-sulfonyl]-2-
H-pyran-4-carboxamide
[0976] ##STR3437##
[0977] Part A: To a stirred solution of the methyl ester of Example
55, part C, (1.0 g, 3.3 mmol) in N,N-dimethylformamide (20 mL) was
added 2-hydroxy-6-methyl-pyridine (0.54 g, 5 mmol), followed by
cesium carbonate (3.2 g, 10 mmol). The resulting solution was
heated to 70 degrees Celsius for 5 hours. The solution remained at
ambient temperature for 11 hours, at which time additional
2-hydroxy-6-methyl-pyridine (0.3 g, 2.7 mmol) was added to the
stirred solution and the resulting solution was heated to 70
degrees Celsius for 3 hours. The solution was concentrated by
rotary evaporation, diluted with saturated NaCl in H.sub.2O and
extracted with ethyl acetate. The organic layer was dried over
sodium sulfate. The solvent was removed by rotary evaporation and
chromatography (on silica, ethyl acetate/methanol) provided the
desired methyl pyridine as a white solid (0.63 g, 49%).
[0978] Part B: To a solution of the methyl pyridine compound of
part A (0.63 g, 1.6 mmol) in THF (13 mL) was added potassium
trimethylsilanoate (0.5 g, 3.5 mmol). The resulting solution was
stirred at ambient temperature for 18 hours. The precipitate that
formed was removed by filtration, washed with methylene chloride
and dried in vacuo to provide the methylpyridine carboxylic acid
potassium salt (0.4 g, 55%).
[0979] Part C: To a stirred solution of the methylpyridine
carboxylic acid potassium salt of part B (0.4 g, 0.9 mmol) in
N,N-dimethylformamide (5 mL) was added
bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (0.5 g, 1
mmol), followed by 4-methylmorpholine (0.27 g, 2.6 mmol), followed
by a 50% aqueous hydroxylamine solution (0.6 mL, 9 mmol). The
resulting solution was stirred at ambient temperature 32 hours. The
solution was concentrated by rotary evaporation and reverse phase
chromatography (on silica, acetonitrile/H.sub.2O) provided the
title compound as a white solid (0.162 g, 47%). HRMS (ES.sup.+)
MH.sup.+ for C.sub.18H.sub.20N.sub.2O.sub.6S 393.1120. Found:
393.1119.
EXAMPLE 99
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-(1H-imidazol-1-yl)phenoxy]phenyl]-sulfonyl]-
-2H-pyran-4-carboxamide, monohydrochloride
[0980] ##STR3438##
[0981] Part A: To a solution of the THP pyranfluoro compound of
Example 55, part C, (2.0 g, 5.2 mmol) in N,N-dimethylacetamide (6
mL) was added 4-(1,3-imidazole)phenol (12.9 g, 33.3 mmol), followed
by cesium carbonate (32.5 g, 99.9 mmol). The reaction was heated at
65 degrees Celsius for twelve hours. Removing the dimethylacetamide
in vacuo afforded a brown solid. Reverse phase chromatography (on
silica, acetonitrile/water) gave the THP-protected product in
solution.
[0982] Part B: A solution of 10% HCl.sub.aq (100 mL) was slowly
added to the solution of the crude THP-protected product from A in
acetonitrile/water (100 mL). After stirring overnight (about 18
hours), the acetonitrile was removed. The resultant precipitate was
collected, giving the title compound as a brown solid (6.0 g, 41%).
MS (FAB) M.sup.+H calculated for
C.sub.218H.sub.21N.sub.3O.sub.6S.sub.1: 444, found 444.
EXAMPLE 100
Preparation of
4-[[4-(4-chlorophenoxy)-phenyl]sulfonyl]-tetrahydro-N-hydroxy-2H-pyran-4--
carboxamide
[0983] ##STR3439##
[0984] Part A: To a stirred solution of the THP pyranfluoro
compound of Example 55, Part C, (2.9 g, 7.5 mmol) in
N,N-dimethylformamide (15 mL) was added p-chloro-phenol (1.93 g, 15
mmol), followed by cesium carbonate (7.3 g, 22.5 mmol). The
resulting composition was heated to 90 degrees Celsius for 1.5
hours. The solution remained at ambient temperature for 18 hours
with stirring, and dimethylformamide (20 mL) was added to the
stirred solution, followed by cesium carbonate (2 g, 6.2 mmol). The
resulting composition was heated to 95 degrees Celsius for 3 hours.
The solution then remained at ambient temperature 20 hours, at
which time it was diluted with H.sub.2O and extracted with ethyl
acetate. The organic layer was washed with half-saturated NaCl and
dried over sodium sulfate. The solvent was removed by rotary
evaporation. Chromatography (on silica, ethyl acetate/hexane)
provided the p-chloro phenoxyphenyl THP-protected hydroxamate
compound (2.9 g, 78%).
[0985] Part B: To a solution of the p-chloro phenoxyphenyl
THP-protected hydroxamate compound of part A (2.9 g, 5.7 mmol) in
dioxane (5 mL) was added 4N HCl in dioxane (5 mL, 20 mmol),
followed by methanol (7.5 mL). The resulting solution was stirred
at ambient temperature for 1 hour. The solvent was removed by
rotary evaporation. Reverse phase chromatography (on silica,
acetonitrile/H.sub.2O) provided the title compound as a white solid
(1.35 g, 58%). MS (FAB) MH.sup.+ for C.sub.18H.sub.18NO.sub.6SCl
412. Found: 412.
EXAMPLE 101
Preparation of
4-[[4-(3-chlorophenoxy)-phenyl]sulfonyl)tetrahydro-N-hydroxy-2H-pyran-4-c-
arboxamide
[0986] ##STR3440##
[0987] Part A: To a stirred solution of the THP pyranfluoro
compound of Example 55, Part C, (5.0 g, 13 mmol) in
N,N-dimethylformamide (20 mL) was added p-chloro-phenol (5 g, 39
mmol), followed by cesium carbonate (17 g, 52 mmol). The resulting
solution was heated to 95 degrees Celsius for 7 hours. The solution
was maintained at ambient temperature for 7 hours, diluted with
H.sub.2O and extracted with ethyl acetate. The organic layer was
washed with half-saturated NaCl and dried over sodium sulfate. The
solution was concentrated by rotary evaporation. Chromatography (on
silica, ethyl acetate/hexane) provided the m-chloro phenoxyphenyl
THP-protected hydroxamate compound (5.2 g, 82%).
[0988] Part B: To a solution of the m-chloro phenoxyphenyl
THP-protected hydroxamate compound of part A (5.2 g, 10 mmol) in
dioxane (5 mL) was added 4N HCl in dioxane (5 mL, 20 mmol),
followed by methanol (10 mL). The resulting solution was stirred at
ambient temperature for 1 hour. The solvent was removed by rotary
evaporation to provide the title compound as a white solid (3.4 g,
79%). HRMS (ES.sup.+) M+NH.sub.4.sup.+ for
C.sub.18H.sub.18NO.sub.6SCl 429.0887. Found: 429.0880.
EXAMPLE 102
Preparation of methyl
4-[4-[(tetrahydro-4-[(hydroxyamino)carbonyl]-2H-pyran-4-yl]sulfonyl]-phen-
oxy]benzenepropanoate
[0989] ##STR3441##
[0990] Part A: To a stirred solution of the THP pyranfluoro
compound of Example 55, part C, (5.0 g, 13 mmol) in
N,N-dimethylformamide (45 mL) was added methyl
3-(4-hydroxyphenyl)-propanoate (7 g, 39 mmol), followed by cesium
carbonate (17 g, 52 mmol). The resulting composition was heated to
95 degrees Celsius for 7 hours. The solution then remained at
ambient temperature for 7 hours. The solution was thereafter
diluted with H.sub.2O and extracted with ethyl acetate. The organic
layer was washed with half-saturated NaCl and dried over sodium
sulfate. The solution was concentrated by rotary evaporation.
Chromatography (on silica, ethyl acetate/hexane) provided the
methyl propanoate phenoxyphenyl THP-protected hydroxamate compound
(5.6 g, 79%).
[0991] Part B: To a solution of the methyl propanoate phenoxyphenyl
THP-protected hydroxamate compound of part A (5.6 g, 10 mmol) in
methanol (5 mL) was added 4N HCl in dioxane (5 mL, 20 mmol). The
resulting solution was stirred at ambient temperature for 0.5
hours. The solvent was removed by rotary evaporation. The residue
was dissolved in methylene chloride/ethyl acetate and the compound
precipitated with hexane. The precipitate was washed with hexane
and dried in vacuo to provide the title compound as a white solid
(3.8 g, 809%). HRMS (ES.sup.+) M.sup.+ for
C.sub.22H.sub.25NO.sub.8S 464.138. Found: 464.135.
EXAMPLE 103
Preparation of
4-[[4-[(4-fluorophenyl)-thio]phenyl]sulfonyl]tetrahydro-N-hydroxy-2H-pyra-
n-4-carboxamide
[0992] ##STR3442##
[0993] Part A: To a stirred solution under a nitrogen atmosphere of
the THP pyranfluoro compound of Example 55, part C, (2.9 g, 7.5
mmol) in N,N-dimethylformamide (25 mL) was added cesium carbonate
(4.9 g, 15 mmol), followed by 4-fluoro-thiophenol (1.9 g, 15 mmol).
The resulting composition was heated to 95 degrees Celsius for 7
hours. Cesium carbonate was added (1.2 g, 3.8 mmol) after 1 hour of
heating and again at two hours. The solution remained at ambient
temperature for 9 hours, was concentrated by rotary evaporation,
diluted with H.sub.2O containing 30% brine and extracted with ethyl
acetate. The organic layer was washed with half-saturated NaCl and
dried over sodium sulfate. The solution was concentrated by rotary
evaporation. Chromatography (on silica, ethyl acetate/hexane)
followed by reverse phase chromatography (acetonitrile/H.sub.2O)
provided the p-fluoro-phenyl-S-phenyl THP-protected hydroxamate
compound (1.9 g, 55%).
[0994] Part B: To a solution of the p-fluoro-phenyl-5-phenyl
THP-protected hydroxamate compound of part A (1.9 g, 4 mmol) in
methanol (5 mL) was added 4N HCl in dioxane (5 mL, 20 mmol. The
resulting solution was stirred at ambient temperature for 0.5
hours. The solvent was removed by rotary evaporation, the residue
was dissolved in methylene chloride and precipitated with hexane.
The precipitate was and dried in vacuo to provide the title
compound as a white solid (1.5 g, 89%). HRMS (ES.sup.+)
M+NH.sub.4.sup.+ for C.sub.18H.sub.18NO.sub.5S.sub.2F 429.0954.
Found: 429.0948.
EXAMPLE 104
Preparation of
Tetrahydro-N-hydroxy-4-[[4-(4-pyridinylthio)phenyl]sulfonyl]-2H-pyran-4-c-
arboxamide, monohydrochloride
[0995] ##STR3443##
[0996] Part A: To a stirred solution of the THP pyranfluoro
compound of Example 55, Part C, (2.9 g, 7.5 mmol) in
N,N-dimethylformamide (20 mL) was added potassium carbonate (2.6 g,
19 mmol), followed by 4-mercaptopyridine (1.7 g, 15 mmol). The
resulting composition was heated to 75 degrees Celsius for 5 hours.
Potassium carbonate was added (0.26 g, 1.9 mmol) after 1 hour of
heating and again at two hours. The solution remained at ambient
temperature for 14 hours. The solution was concentrated by rotary
evaporation, diluted with H.sub.2O containing 30% brine and
extracted with ethyl acetate. The organic layer was washed with
half-saturated NaCl and dried over Na.sub.2SO.sub.4. The solution
was concentrated by rotary evaporation. Chromatography (on silica,
ethyl acetate/hexane) provided the mercaptopyridine THP-protected
hydroxamate compound (1.2 g, 33%).
[0997] Part B: To a solution of the mercaptopyridine THP-protected
hydroxamate compound of part A (1.2 g, 2.5 mmol) in acetonitrile
(20 mL) was added 12.5 N HCl (0.4 mL, 5 mmol), followed by methanol
(3 mL). The resulting solution was stirred at ambient temperature
for 1 hour. The precipitate was filtered, washed with methanol
followed by ethyl ether and dried in vacuo to provide the title
compound as a white solid (0.92 g, 86%). HRMS (ES.sup.+)
M+NH.sub.4.sup.+ for C.sub.17H.sub.18N.sub.2O.sub.5S.sub.2
395.0735. Found: 395.0734.
EXAMPLE 105
Preparation of
4-[4-[[tetrahydro-4-[(hydroxyamino)carbonyl]-2H-pyran-4-yl]sulfonyl]pheno-
xy]benzenepropanoic acid
[0998] ##STR3444##
[0999] Part A: To a stirred solution of the title compound of
Example 102 (0.1 g, 0.2 mmol) in methanol (0.5 mL) was added
aqueous 1 M Li(OH).sub.2 (0.43 mL, 0.43 mmol). After standing at
ambient temperature 24 hours, the solution was refluxed 20 hours.
The solution was lyophilized to dryness and reverse phase
chromatography provided the title compound as a white solid (9 mg,
9%). MS (FAB) M+Li.sup.+ for C.sub.21H.sub.23NO.sub.8S 456. Found:
456.
EXAMPLE 106
Preparation of
Tetrahydro-N-hydroxy-4-[[4-([1-(2-propynyl)-4-piperidinyl]-oxy]phenyl]sul-
fonyl]-2H-pyran-4-carboxamide, monohydrochloride
[1000] ##STR3445##
[1001] Part A: To a heat dried three-neck flask under a nitrogen
atmosphere was added NaH (1.59 g of 60%, 40 mmol) slurried in
N,N-dimethylformamide (50 mL). The slurry was chilled to zero
degrees Celsius using an ice bath and N-Boc-4-hydroxy piperidine
was added (8 g, 40 mmol) followed by a N,N-dimethylformamide rinse
(10 mL). The ice bath was removed and the stirred solution
permitted to reach ambient temperature over two hours. The stirred
solution was again chilled to zero degrees Celsius and the methyl
ester compound of Example 55, part C, (10 g, 33 mmol) dissolved in
N,N-dimethylformamide (40 mL) was added. The ice bath was removed
and the solution stirred at ambient temperature 48 hours. The
solution was concentrated by rotary evaporation. The solution was
diluted with H.sub.2O and extracted with ethyl acetate. The organic
layer was dried over sodium sulfate. After chromatography (on
silica, ethyl acetate/hexane/methanol), the crude N-Boc methyl
ester was treated with 1 N HCl in methanol. The solvent was removed
by rotary evaporation. The residue was then dissolved in
acetonitrile (21 mL) to which H.sub.2O was added (21 mLs). Reverse
phase chromaatography (on silica, acetonitrile/H.sub.2O) afforded
the purified piperidine methyl ester as the HCl salt (4.9 g,
35%).
[1002] Part B: To a stirred suspension of the piperidine methyl
ester HCl salt of part A (1.8 g, 4 mmol) in acetonitrile (24 mL)
and was added potassium carbonate (1.8 g, 13 mmol), followed by
propargyl bromide (0.58 mL of 80% solution, 5.2 mmol). The mixture
was stirred at ambient temperature for 18 hours. The solution was
concentrated by rotary evaporation, diluted with H.sub.2O and
extracted with ethyl acetate. The organic layer was dried over
Na.sub.2SO.sub.4 and concentrated by rotary evaporation.
Chromatography (on silica, methylene chloride/methanol) provided
the propargyl piperidine methyl ester compound (1.1 g, 63%).
[1003] Part C: To a solution of the propargyl piperidine methyl
ester compound of part B (1.1 g, 2.7 mmol) in THF (3 mL) was added
potassium trimethylsilanoate (0.57 g, 4 mmol). After 5 minutes, THF
was added (12 mL), followed by a second addition of THF (15 mL)
after 10 more minutes. The resulting solution was stirred at
ambient temperature for 18 hours, during which a gel formed. The
solvent was removed by rotary evaporation, and the residue was
diluted with H.sub.2O and washed with ethyl acetate. The aqueous
layer was acidified and chromatographed (on silica,
acetonitrile/H.sub.2O) to provide the desired propargyl piperidine
carboxylic acid after lyophilization (0.64 g, 59%).
[1004] Part D: To a stirred solution of propargyl piperidine
carboxylic acid of part C (0.64 g, 1.6 mmol) in
N,N-dimethylformamide (5 mL) was added 1-hydroxybenzotriazole (0.3
g, 2.3 mmol), followed by
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (0.33
g, 1.7 mmol), followed by O-tetrahydro-2H-pyran-2-yl-hydroxylamine
(0.57 g, 4.8 mmol). The solution was stirred at ambient temperature
42 hours, concentrated by rotary evaporation, diluted with H.sub.2O
and extracted with ethyl acetate. The organic layer was washed with
saturated sodium bicarbonate, followed by brine and dried over
Na.sub.2SO.sub.4. The solution was concentrated by rotary
evaporation and chromatographed on reverse phase (on silica,
acetonitrile/H.sub.2O) to provide the title compound as a white
solid upon lyophilization (0.2 g, 30%). HRMS (ES.sup.+) MH.sup.+
for C.sub.20H.sub.26N.sub.2O.sub.6S 423.159. Found: 423.159.
EXAMPLE 107
Preparation of
4-[[4-[(1-acetyl-4-piperidinyl)oxy]phenyl]-sulfonyl]tetrahydro-N-hydroxy--
2H-pyran-4-carboxamide
[1005] ##STR3446##
[1006] Part A: Acetic anhydride (1.7 g, 16 mmol) was added to a
stirred suspension of the piperidine methyl ester HCl salt of
Example 106, part A, (1.8 g, 4 mmol) in pyridine (2 mL). The
mixture was stirred at ambient temperature for 20 minutes. The
solution was concentrated by rotary evaporation and chromatographed
(on silica, ethyl acetate/methanol) to provide the acetyl
piperidine methyl ester compound (1.5 g, 83%).
[1007] Part B: To a solution of the acetyl piperidine methyl ester
compound of part A (1.5 g, 3.3 mmol) in THF (5 mL) was added
potassium trimethylsilanoate (0.86 g, 6 mmol). After 5 minutes, THF
was added (15 mL), followed by a second addition of THF (15 mL)
after 10 more minutes. The resulting solution was stirred at
ambient temperature for 18 hours. The precipitate was isolated by
filtration to provide the desired acetyl piperidine carboxylic acid
(1.5 g, 98).
[1008] Part C: To a stirred solution of acetyl piperidine
carboxylic acid of part B (0.9 g, 2 mmol) in dimethylacetamide (5
mL) was added bromo-tris-pyrrolidino-phosphonium
hexafluorophosphate (1 g, 2.3 mmol), followed by 4-methylmorpholine
(0.6 g, 6 mmol), followed by aqueous
O-tetrahydro-2H-pyran-2-yl-hydroxylamine (1.5 mL, 23 mmol) and the
solution was stirred at ambient temperature 48 hours. Reverse-phase
chromatography (on silica, H.sub.2O/acetonitrile) provided title
compound as a white solid (0.1 g, 12%). MS (FAB) MH.sup.+ for
C.sub.19H.sub.26N.sub.2O.sub.7S 427. Found: 427.
EXAMPLE 108
Preparation of
4-[[4-(3-chloro-4-fluorophenoxy)phenyl]sulfonyl]-tetrahydro-N-hydroxy-2H--
pyran-4-carboxamide
[1009] ##STR3447##
[1010] Part A: To a stirred solution of the THP pyranfluoro
compound of Example 55, part C, (3.2 g, 7.7 mmol) in
N,N-dimethylacetamide (15 mL) was added the 3-chloro-4-fluorophenol
(1.7 mL, 12 mmol), followed by cesium carbonate (5 g, 15.5 mmol).
The reaction was heated at 95 degrees Celsius for 2 hours. Cesium
carbonate (2.5 g, 8 mmol) was added, and the reaction was heated at
95 degrees Celsius for 6 hours. The solution remained at ambient
temperature for 8 hours. The crude reaction was then filtered to
remove the cesium chloride and precipitated product. The filter
cake was suspended in H.sub.2O and acidified with HCl to pH=6.
After foaming ceased, the precipitate was removed by filtration,
washed with H.sub.2O, dissolved in H.sub.2O/acetonitrile and
chromatographed over a reverse phase HPLC column
(H.sub.2O/acetonitrile) to give the 3-chloro-4-fluoro phenoxy
THP-protected hydroxamate (1.4 g, 35%).
[1011] Part B: To a stirred solution of the 3-chloro-4-fluoro
phenoxy THP-protected hydroxamate from part A (1.4 g, 2.7 mmol) in
acetonitrile (10 mL) was added 1N aqueous HCl (10 mL). The solution
was stirred at ambient temperature for 1 hour. The acetonitrile was
evaporated off at ambient temperature under a steady stream of
nitrogen until a heavy precipitate formed. The precipitate was
filtered and the cake was washed with H.sub.2O followed by diethyl
ether and dried under vacuum, giving the title compound as a white
solid (12.5 g, 96%). The compound was recrystallized from
acetone/hexane, giving white crystals (10.9 g, 86%). HRMS (ES)
M+NH.sub.4.sup.+ for C.sub.18H.sub.19NO.sub.6SFCl 447.079. Found:
447.080.
EXAMPLE 109
Preparation of
tetrahydro-N-hydroxy-4-[[4-(4-phenoxy)phenyl]sulfonyl
2H-thiopyran-4-carboxamide
[1012] ##STR3448##
[1013] Part A: To a solution of the methylester thiopyran compound
of Part C, Example 50 (MW 318, 3 g, 1.0 equivalents) in
N,N-dimethylacetamide (DMA; 40 mL) were added cesium carbonate (12
g, 1.5 equivalents) and phenol (1.5 g). The mixture was heated to
95 degrees Celsius for 6 hours. After the reaction was cooled to
ambient temperature, the reaction mixture was filtered and the
N,N-dimethylacetamide was then removed via rotary evaporation. The
residue was dissolved in 10% aqueous HCl (100 mL) and extracted
with ethyl acetate (2.times.). The ethyl acetate extract was dried
over sodium sulfate and removed under reduced pressure to give an
oil. The oil was purified on silica gel to give 2 g of methyl
ester. The .sup.1H NMR, MS, and HPLC were consistent with the
desired compound.
[1014] Part B: To a solution of the methyl ester compound of Part A
(MW 392, 2 g) in THF (20 mL) was added potassium trimethylsilanoate
(MW 128,1.6 g, 1.2 equivalents). The mixture stirred 2-3 hours at
ambient temperature until a solid precipitate developed. After the
hydrolysis was complete, N-methylmorpholine (2 mL) was added
followed by PyBrop (2.3 g, 1.2 equivalents). The solution was
stirred for 10 minutes, then aqueous hydroxylamine was added and
stirring for an additional 2 hours. After complete reaction (2
hours) the solvent was removed via rotary evaporation. The residue
was dissolved in water/acetonitrile, made acidic with TFA (pH=2),
then purified on prep RPHPLC to give 1 g the title compound as a
white solid. The .sup.1H NMR, MS, and HPLC were consistent with the
desired compound. MS (CI) M+H calculated for
C.sub.18H.sub.19NO.sub.5S.sub.2: 393, found 393.
EXAMPLE 110
Preparation of
tetrahydro-N-hydroxy-4-[[4-(4-phenoxy)phenyl]sulfonyl 2H-sulfonyl
pyran-4-carboxamide
[1015] ##STR3449##
[1016] Part A: Water (50 mL) was added to a solution of the
compound of Example 109, part A, (2 g) in tetrahydrofuran (50 mL).
To this vigorously stirred mixture was added Oxone.RTM. (8 g, 3
equivalents). The course of the reaction was monitored by RPHPLC.
After 3 hours, water was added and the product was extracted with
ethyl acetate (100 mL, 2.times.). The ethyl acetate was dried over
sodium sulfate. After solvent was removed via reduced pressure, 1.8
g of the phenoxy methyl ester compound was obtained as a white
solid. The .sup.1H NMR, MS, and HPLC were consistent with the
desired compound.
[1017] Part B: To a solution of the phenoxy methyl ester compound
of part A (MW 590, 2 g) in tetrahydrofuran (20 mL) was added
potassium trimethylsilanoate (MW 128, 1.2 g, 1.2 equivalents). The
mixture was stirred 2-3 hours until a solid precipitate developed.
After the hydrolysis was complete, N-methylmorpholine (2 mL) was
added followed by PyBrop (2.3 g, 1.2 equivalents). The solution was
stirred for 10 minutes then aqueous hydroxylamine was added and
with stirring for an additional 2 hours. After complete reaction,
(2 hours) the solvent was removed via rotary evaporation. The
residue was dissolved in water/acetonitrile, made acidic with
trifluoroacetic acid (pH=2), then purified on prep RPHPLC to give
500 mg of the title compound as a white solid. The .sup.1H NMR, MS,
and HPLC were consistent with the desired compound. MS (CI) M+H
calculated for C.sub.18H.sub.19NO.sub.7S.sub.2: 425, found 425.
EXAMPLE 111
Preparation of
tetrahydro-N-hydroxy-4-[[4-(4-phenoxy)phenyl]sulfonyl 2H-sulfoxyl
pyran-4-carboxamide
[1018] ##STR3450##
[1019] Part A: To a solution of methyl ester of Example 109, part
A, (2 g) in acetic acid/water (25/5 mL) was added hydrogen peroxide
(2 mL, 30% solution). The course of this vigorously stirred
solution was monitored by RPHPLC. After 3 hours, water was added
and the product was extracted with ethyl acetate (100 mL,
2.times.). The ethyl acetate was dried over sodium sulfate. After
solvent was removed via reduced pressure, 2.1 grams of the
methylester sulfoxidepyran Phenyl-O-phenyl compound was obtained as
a white solid. The .sup.1H NMR, MS, and HPLC were consistent with
the desired compound.
[1020] Part B: To a solution of the methylester sulfoxidepyran
Phenyl-O-phenyl compound of Part A (MW 578, 1.8 g) in
tetrahydrofuran (25 mL) was added potassium trimethylsilanoate (MW
128, 1.2 g, 1.2 equivalents). The mixture was stirred 2-3 hours
until a solid precipitate developed. After the hydrolysis was
complete, N-methyl morpholine (2 mL) was added followed by PyBrop
(2.3 g, 1.2 equivalents). The solution was stirred for 10 minutes
then aqueous hydroxylamine was added, with stirring for an
additional 2 hours. After complete reaction (12 hours) the solvent
was removed via rotary evaporation. The residue was dissolved in
water/acetonitrile, made acidic with trifluoroacetic acid (pH=2),
then purified on prep RPHPLC to give 500 milligrams of the title
compound as a white solid. The .sup.1H NMR, MS, and HPLC were
consistent with the desired compound. MS (CI) M+H calculated for
C.sub.18H.sub.19NO.sub.6S.sub.2: 409, found 409.
EXAMPLE 112
Preparation of
tetrahydro-N-hydroxy-4-[[4-(1-acetyl-4-(4-piperazine-phenoxy)phenyl]sulfo-
nyl 2H-thiopyran-4-carboxamide
[1021] ##STR3451##
[1022] Part A: To a solution of the methylester thiopyran compound
of Example 50, part C, (MW 318, 5 g, 1.0 equivalents) in
N,N-dimethylacetaminde (70 mL) were added cesium carbonate (MW 5.5
g, 1.5 equivalents), tetrabutylammonium fluoride (2 mL, 2 M in THF)
and 1-acetyl-4-(4-hydroxyphenyl)piperazine (4.9 g). The mixture was
stirred and heated at 90 degrees Celsius for 6 hours. The reaction
mixture was filtered and the N,N-dimethylacetamide was then removed
via rotary evaporation. The residue was dissolved in water (100 mL)
and extracted with ethyl acetate (2.times.). The ethyl acetate was
dried over sodium sulfate and removed under reduced pressure to
give an oil. The oil was purified on silica gel to give 3 g of
methyl ester. The .sup.1H NMR, MS, and HPLC were consistent with
the desired compound.
[1023] Step B: To a solution of the methyl ester compound of Part A
(MW 433, 3 g) in tetrahydrofuran (50 mL) was added potassium
trimethylsilanoate (MW 128, 0.9 g, 1.2 equivalents). The mixture
was stirred 2-3 hours until a solid precipitate developed. After
the hydrolysis was complete N-methyl morpholine (2 mL) was added
followed by PyBrop (3.5 g, 1.2 equivalents). The solution was
stirred for 10 minutes then aqueous hydroxylamine was added with
stirring for an additional 2 hours. After complete reaction (2
hours) the solvent was removed via rotary evaporation. The residue
was dissolved in water/acetonitrile, made acidic with
trifluoroacetic acid (pH=2), then purified on prep RPHPLC to give
1.2 g of the title compound as a white solid. The .sup.1H NMR, MS,
and HPLC were consistent with the desired compound. MS (CI) M+H
calculated for C.sub.24H.sub.29N.sub.3O.sub.6S.sub.2: 519, found
519.
EXAMPLE 113
Preparation of
tetrahydro-N-hydroxy-4-[[4-(4-thiophenoxy)phenyl]sulfonyl
2H-thiopyran-4-carboxamide
[1024] ##STR3452##
[1025] Part A: To a solution of the methylester thiopyran compound
of Example 50, part C, (5 g.) in acetic acid (40 mL) was added
water/hydrogen peroxide (8 mL, 4 mL/4 mL, 30% solution). The course
of this vigorously stirred solution was monitored by RPHPLC. After
3 hours at ambient temperature, water was added and the product was
extracted with ethyl acetate (100 mL, 2.times.). The ethyl acetate
was dried over sodium sulfate. After solvent was removed via
reduced pressure 4.5 g of the methylester sulfoxidepyran Ph-p-F was
obtained as a white solid.
[1026] The .sup.1H NMR, MS, and HPLC were consistent with the
desired compound.
[1027] Part B: To a solution of the methylester sulfoxidepyran
Ph-p-F of Part A (MW 318, 5 g, 1.0 equivalents) in DMA (70 mL) were
added cesium carbonate (MW 4.5 g, 1.1 equivalents) and thiophenol
(1.5 g, 1.05 equivalents). The mixture was stirred 2 hours at room
temperature. The reaction mixture was filtered and the
N,N-dimethylacetamide was then removed via rotary evaporation. The
residue was dissolved in water (100 mL) and extracted with ethyl
acetate (2.times.). The ethyl acetate was dried over sodium sulfate
and removed under reduced pressure to give an oil. The oil was
purified on prep RPHPLC to give 2 g of methyl ester sulfoxidepyran
Phenyl-S-Ph compound. The .sup.1H NMR, MS, and HPLC were consistent
with the desired compound.
[1028] Part C: To a solution of the methylester sulfoxidepyran
Phenyl-S-Ph of Part B (MW 590, 5 g) in tetrahydrofuran (100 mL) was
added potassium trimethylsilanoate (MW 128, 1.5 g, 2 equivalents).
The mixture was stirred 2-3 hours at ambient temperature until a
solid precipitate developed. After the hydrolysis was complete,
N-methyl morpholine (6 mL) was added followed by PyBrop (4 g, 1.1
equivalents). The solution was stirred for 10 minutes then aqueous
hydroxylamine was added with stirring for an additional 2 hours.
After complete reaction (12 hours), the solvent was removed via
rotary evaporation. The residue was dissolved in
water/acetonitrile, made acidic with trifluoroacetic acid (pH=2),
then purified on prep RPHPLC to give 1.9 g of the title compound as
a white solid. The .sup.1H NMR, MS, and HPLC were consistent with
the desired compound. MS (CI) M+H calculated for
C.sub.18H.sub.19NO.sub.5S.sub.3: 425, found 425.
EXAMPLE 114
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-(4-hydroxyphenyl)thiophenoxy)-phenyl]sulfon-
yl 2H-thiopyran-4-carboxamide
[1029] ##STR3453##
[1030] Part A: To a solution of the title compound of Example 50
(MW 402, 5 g, 1.0 equivalent) in N,N-dimethylacetamide (70 mL) was
added the 4-hydroxythiophenol (MW 126, 1.6 g, 1.3 equivalents)
followed by potassium carbonate (MW 138, 5 g, 2.0 equivalents). The
reaction was heated at 65 degrees Celsius for 3 hours, until HPLC
indicated the reaction had finished. The reaction mixture was
filtered, the N,N-dimethylacetamide was removed in vacuo. The
residue was dissolved in water (100 mL) and extracted with ethyl
acetate (2.times.). The ethyl acetate was dried over sodium sulfate
and removed under reduced pressure to give the p-OH thiophenoxy
compound as a crude oil. The .sup.1H NMR, MS, and HPLC were
consistent with the desired compound.
[1031] Part B: The crude p-OH thiophenoxy compound from Part A was
stirred in HCl/dioxane (50 mL) for 2 hours. The solvent was removed
and the residue was dried and dissolved in water/acetonitrile, made
acidic with trifluoroacetic acid (pH=2), then purified on prep
RPHPLC to give 2.1 g of the title compound as a yellow solid. The
.sup.1H NMR, MS, and HPLC were consistent with the desired
compound. MS (CI) M+H calculated for
C.sub.18H.sub.19NO.sub.5S.sub.3: 425, found 425.
EXAMPLE 115
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-aminophenyl)thiophenoxy]phenyl]sulfonyl
2H-thionyran-4-carboxamide
[1032] ##STR3454##
[1033] Part A: To a solution of the title compound of Example 50
(MW 402, 5 g, 1.0 equivalents) in N,N-dimethylacetamide (70 mL) was
added the 4-aminothiophenol (MW 126, 1.6 g, 1.3 equivalents)
followed by potassium carbonate (MW 138, 5 g, 2.0 equivalents). The
reaction was heated at 65.degree. C. for 3 hours, until HPLC
indicated the reaction had finished. The reaction mixture was
filtered, and the N,N-dimethylacetamide was removed in vacuo. The
residue was dissolved in water (100 ml) and extracted with ethyl
acetate (2.times.). The ethyl acetate was dried over sodium sulfate
and removed under reduced pressure to give the p-NH2 thiophenoxy
compound as a crude oil. The .sup.1H NMR, MS, and HPLC were
consistent with the desired compound.
[1034] Part B: The crude p-NH.sub.2 thiophenoxy compound of Part A
was stirred in HCl/dioxane (50 mL) for 2 hours. The solvent was
removed and the residue was dried and dissolved in
water/acetonitrile, made acidic with trifluoroacetic acid (pH=2),
then purified on prep RPHPLC to give 2.1 g of the title compound as
a yellow solid. The .sup.1H NMR, MS, and HPLC were consistent with
the desired compound. MS (CI) M+H calculated for
C.sub.18H.sub.20N.sub.2O.sub.4S.sub.3C.sub.2HF.sub.3O.sub.2: 538,
found 538.
EXAMPLE 116
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-tyramine)phenoxy]phenyl]sulfonyl
2H-thiopyran-4-carboxamide
[1035] ##STR3455##
[1036] Step A: To a solution of title compound of Example 50 (MW
402, 5 g, 1.0 equivalents) in N,N-dimethylacetamide (50 mL) was
added the trypamine (3 g, 2 equivalents), followed by cesium
carbonate (10 g, 2.0 equivalents). The reaction was heated at 95
degrees Celsius for 5 hours, until HPLC indicated the reaction had
finished. The reaction mixture was filtered, the
N,N-dimethylacetamide was removed in vacuo. The solvent was removed
and the residue was dried and dissolved in water/acetonitrile, made
acidic with trifluoroacetic acid (TFA; pH=2), then purified on prep
RPHPLC to give 2.5 g of the crude methyl ester as a yellow solid.
The .sup.1H NMR, MS, and HPLC were consistent with the desired
compound.
[1037] Step B: The crude methyl ester from reaction Step A was
stirred in aqueous HCl (50 mL) for 1 hour. The solvent was removed
and the residue was dried and dissolved in water/acetonitrile, made
acidic with TFA (pH=2), then purified on prep RPHPLC to give 2.2 g
of yellow foam solid as the trifluoroacetic acid salt of the title
compound. The .sup.1H NMR, MS, and HPLC were consistent with the
desired compound. MS (CI) M+H calculated for
C.sub.20H.sub.24N.sub.2O.sub.5S.sub.2 C2HF3O2: 550, found 550.
EXAMPLE 117
Preparation of tetrahydro-N-hydroxy-4-[[4-[4-hydroxyphenyl
glycine)]phenyl]sulfonyl 2H-thionyran-4-carboxamide
[1038] ##STR3456##
[1039] Step A: To a solution of the title compound of Example 50
(MW 402, 5 g, 1.0 equivalents) in N,N-dimethylacetamide (50 mL) was
added hydroxyphenylglycine (3 g, 2 equivalents), followed by cesium
carbonate (10 g, 2.0 equivalents). The reaction was heated at 95
degrees Celsius for 5 hours, until HPLC indicated the reaction had
finished. The reaction mixture was filtered, the
N,N-dimethylacetamide was removed in vacuo. The solvent was
removed, the residue was dried and dissolved in water/acetonitrile,
made acidic with trifluoroacetic acid (pH=2), then purified on prep
RPHPLC to give 2.0 g of the crude methyl ester as a tan solid. The
.sup.1H NMR, MS, and HPLC were consistent with the desired
compound.
[1040] Step B: The crude methyl ester from reaction Step A was
stirred in aqueous HCl (50 mL) for 1 hour. The solvent was removed
and the residue was dried and dissolved in water/acetonitrile, made
acidic with trifluoroacetic acid (pH=2), then purified on prep
RPHPLC to give 2.2 g of tan foam/solid as the trifluoroacetic acid
salt of the title compound. The .sup.1H NMR, MS, and HPLC were
consistent with the desired compound. MS (CI) M+H calculated for
C.sub.20H.sub.22N.sub.2O.sub.7S.sub.2C.sub.2HF.sub.3O.sub.2: 580,
found 580.
EXAMPLE 118
Preparation of tetrahydro-N-hydroxy-4-[[4-[4-hydroxyphenyl
glycine)]phenyl]sulfonyl 2H-thiopyran-4-carboxamide
[1041] ##STR3457##
[1042] Step A: A solution of the title compound of Example 115 (MW
518, 2.5 g, 1.0 equivalents) in THF (25 mL) and N-Boc
N-hydroxysuccinyl glycine (2.1 g, 2 equivalents) containing
N-methylmorpholine (2 mL) and 4-dimethylaminopyridine (250 mg) was
stirred for 12 hours. After RPHPLC indicated complete reaction at
this time, the solvent was removed under reduced pressure to give
an oil. Hydrochloric acid 10% aqueous solution was added with
stirring for an additional 1-2 hours. The solution was then
purified on prep RPHPLC to give 1.2 g of white foam/solid as the
trifluoroacetic acid salt. The .sup.1H NMR, MS, and HPLC were
consistent with the desired compound. The solid was dried under
reduced pressure, then suspended in ethyl ether followed by
addition of 4N HCl/dioxane (20 mL). The HCl salt was filtered and
washed with ethyl ether to give the title compound as a tan solid
(1.1 g). The .sup.1H NMR, MS, and HPLC were consistent with the
desired compound. MS (CI) M+H calculated for
C.sub.20H.sub.23N.sub.3O.sub.5S.sub.3C.sub.2HF.sub.3O.sub.2: 595,
found 595.
EXAMPLE 119
Preparation of
tetrahydro-N-hydroxy-4-[[4-(4-pyridinylthio)-phenyl]sulfonyl]-2H-thiopyra-
n-4-carboxamide, monohydrochloride
[1043] ##STR3458##
[1044] Step A: To a solution of the title compound of Example 50
(MW 402, 5 g, 1.0 equivalents) in N,N-dimethylacetamide (50 mL)
were added 4-thiopyridine (3 g, 2 equivalents), followed by cesium
carbonate (10 g, 2.0 equivalents). The reaction mixture was heated
at 75 degrees Celsius for 5 hours, until HPLC indicated the
reaction had finished. The reaction mixture was filtered, and the
N,N-dimethylacetamide was removed in vacuo. The residue was dried
and dissolved in water/acetonitrile, made acidic with
trifluoroacetic acid (pH=2), then purified on prep RPHPLC to give
2.0 g of the crude --S-pyridyl THP-protected thiopyran compound as
a brown solid. The .sup.1H NMR, MS, and HPLC were consistent with
the desired compound.
[1045] Step B: The --S-pyridyl THP-protected thiopyran compound
from Step A was stirred in aqueous HCl (50 mL) for 1 hour. The
solvent was removed and the residue was dried and dissolved in
water/acetonitrile, made acidic with trifluoroacetic acid (pH=2),
then purified on prep RPHPLC to give 1.8 g of tan foam/glass as the
trifluoroacetic acid salt of the title compound. The .sup.1H NMR,
MS, and HPLC were consistent with the desired compound. MS (CI) M+H
calculated for C.sub.17H.sub.18N.sub.2O.sub.4S.sub.3HCl: 447, found
447.
EXAMPLE 120
Preparation of
4-[[4-[(4-aminophenyl)thio]phenyl]-sulfonyl]tetrahydro-N-hydroxy-2H-pyran-
-4-carboxamide
[1046] ##STR3459##
[1047] Step A: To a solution of the title compound of Example 55
(MW 387, 5 g, 1.0 equivalents) in N,N-dimethylacetamide (50 mL)
were added the 4-aminothiophenol (3 g, 2 equivalents) followed by
potassium carbonate (10 g, 2.0 equivalents). The reaction was
heated at 60 degrees Celsius for 5 hours, until HPLC indicated the
reaction had finished. The reaction mixture was filtered, the DMA
was removed in vacuo. The solvent was removed and the residue was
dried and dissolved in water/acetonitrile, made acidic with
trifluoroacetic acid (pH=2), then purified on prep RPHPLC to give
2.0 g of the crude 4-amino-S-Ph THP-protected thiopyran as a brown
solid. The .sup.1H NMR, MS, and HPLC were consistent with the
desired compound.
[1048] Step B: The 4-amino-S-Ph THP-protected thiopyran compound of
Step A was stirred in aqueous HCl (50 mL) for 1 hour. The solvent
was removed and the residue was dried and dissolved in
water/acetonitrile, made acidic with trifluoroacetic acid (pH=2),
then purified on prep RPHPLC to give 1.4 g of tan foam/glass as the
trifluoroacetic acid salt of the title compound. The .sup.1H NMR,
MS, and HPLC were consistent with the desired compound. MS (CI) M+H
calculated for C.sub.18H.sub.20N.sub.2O.sub.5S.sub.2: 408, found
408.
EXAMPLE 121
Preparation of
tetrahydro-N-hydroxy-4-[[4-[(2-methyl-5-benzothiazolyl)-oxy]phenyl]sulfon-
yl]-2H-pyran-4-carboxamide
[1049] ##STR3460##
[1050] Step A: To a solution of the title compound of Example 55
(MW 387, 10 g, 1.0 equivalents) in DMA (50 mL) were added
hydroxymethyl benzothiazole (8 g, 1.5 equivalents) followed by
cesium carbonate (20 g, 2.0 equivalents). The reaction was heated
at 90 degrees Celsius for 5 hours, until HPLC indicated the
reaction had finished. The reaction mixture was cooled then
filtered, the N,N-dimethylacetamide was discarded. The filter cake
was placed in 10% aqueous HCl and stirred for 30 minutes to remove
the cesium salts. The desired solid separated out of solution as a
gum. This gum was dissolved in ethyl aceatate (100 mL) and was
washed with water and dried over sodium sulfate. The solvent was
removed in vacuo to give an oil that was dissolved in
water/acetonitrile, made acidic with trifluoroacetic acid (pH=2),
then purified on prep RPHPLC to give the
2-methyl-5-benzothiazolyloxy compound. The .sup.1H NMR, MS, and
HPLC were consistent with the desired compound.
[1051] Step B: The 2-methyl-5-benzothiazolyloxy compound of Step A
was stirred in aqueous HCl (20 mL)/acetonitrile (20 mL) for 1 hour.
The solvent was concentrated and the solid that separated was
filtered to give 6.5 g of the title compound. The .sup.1H NMR, MS,
and HPLC were consistent with the desired compound. MS (CI) M+H
calculated for C.sub.20H.sub.20N.sub.2O.sub.6S.sub.2: 448, found
448.
EXAMPLE 122
Preparation of
4-[[4-(4-chloro-3-fluorophenoxy)phenyl]sulfonyl]-tetrahydro-N-hydroxy-2H--
pyran-4-carboxamide
[1052] ##STR3461##
[1053] Step A: To a solution of the title compound of Example 55
(MW 387, 10 g, 1.0 equivalents) in N,N-dimethylacetamide (50 mL)
were added 4-chloro-3-flourophenol (7 g, 1.4 equivalents) followed
by cesium carbonate (20 g, 2.0 equivalents). The reaction was
heated at 90 degrees Celsius for 5 hours, until HPLC indicated the
reaction had finished. The reaction mixture was cooled then
filtered, the DMA was discarded. The filter cake was placed in 10%
aqueous HCl and stirred for 30 minutes to remove the cesium salts.
The desired 4-chloro-3-fluorophenoxy compound (11 g) separated out
of solution and was filtered. The .sup.1H NMR, MS, and HPLC were
consistent with the desired compound.
[1054] Step B: The 4-chloro-3-fluorophenoxy compound (3.4 g) of
Step A was stirred in aqueous HCl (20 mL)/acetonitrile (20 mL) for
1 hour. The solvent was concentrated and the solid that separated
was filtered to give 2.0 g of the title compound. The .sup.1H NMR,
MS, and HPLC were consistent with the desired compound. MS (CI) M+H
calculated for C.sub.18H.sub.17ClFNO.sub.6S: 429, found 429.
EXAMPLE 123
Preparation of
4-[[4-[4-(4-acetyl-1-piperazinyl)phenoxy]phenyl]sulfonyl]-tetrahydro-N-hy-
droxy-2H-pyran-4-carboxamide, trifluoroacetic acid salt
[1055] ##STR3462##
[1056] Step A: To a solution of the title compound of Example 55
(MW 387, 5 g, 1.0 equivalents) in DMA (50 mL) were added
1-acetyl-4-(4-hydroxy-phenyl)piperazine (3 g, 2 equivalents)
followed by cesium carbonate (10 g, 2.0 equivalents). The reaction
was heated at 90 degrees Celsius for 5 hours, until HPLC indicated
the reaction had finished. The reaction mixture was filtered, the
DMA was removed in vacuo. The residue was dissolved in
water/acetonitrile, made acidic with TFA (pH=2), then purified on
prep RPHPLC to give 3.1 g of the crude
4-acetyl-1-piperazinylphenoxy compound as a brown solid. The
.sup.1H NMR, MS, and HPLC were consistent with the desired
compound.
[1057] Step B: The 4-acetyl-1-piperazinylphenoxy compound from
reaction Step A was stirred in aqueous HCl (50 mL) for 1 hour. The
solvent was removed and the residue was dried and dissolved in
water/acetonitrile, made acidic with TFA (pH=2), then purified on
prep RPHPLC to give 2.0 g of tan foam as the trifluoroacetic acid
salt of the title compound. The .sup.1H NMR, MS, and HPLC were
consistent with the desired compound. MS (CI) M+H calculated for
C.sub.24H.sub.29N.sub.3O.sub.7SC.sub.2HF.sub.3O.sub.2: 617, found
617.
EXAMPLE 124
Preparation of
N,N-dimethyl-5-[4-[[tetrahydro-4-[(hydroxyamino)-carbonyl]-2H-pyran-4-yl]-
sulfonyl]-phenoxy]-1H-indole-2-carboxamide, trifluoroacetic acid
salt
[1058] ##STR3463##
[1059] Step A: To a solution of the title compound of Example 55
(MW 387, 5 g, 1.0 equivalents) in DMA (50 mL) were added the
5-hydroxy-2-indole dimethylcarboxylate (3 g, 2 equivalents)
followed by CS.sub.2CO.sub.3 (10 g, 2.0 equivalents). The reaction
was heated at 90 degrees Celsius for 5 hours, until HPLC indicated
the reaction had finished. The reaction mixture was filtered, the
DMA was removed in vacuo. The residue was dissolved in
water/acetonitrile, made acidic with TFA (pH=2), then purified on
prep RPHPLC to give 2.1 g of the crude THP-protected pyran
hydroxamate compound as a brown solid. The .sup.1H NMR, MS, and
HPLC were consistent with the desired compound.
[1060] Step B: The THP-protected pyran hydroxamate compound from
Step A was stirred in aqueous HCl (50 mL) for 1 hour. The solvent
was removed and the residue was dried and dissolved in
water/acetonitrile, made acidic with TFA (pH=2), then purified on
prep RPHPLC to give 1.5 g of tan solid as the trifluoroacetic acid
salt of the title compound. The .sup.1H NMR, MS, and HPLC were
consistent with the desired compound. MS (CI) M+H calculated for
C.sub.23H.sub.25N.sub.3O.sub.7S: 487, found 487.
EXAMPLE 125
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-(1-methylethyl)phenoxy]phenyl]-sulfonyl]-2H-
-pyran-4-carboxamide
[1061] ##STR3464##
[1062] Step A: To a solution of the title compound of Example 55
(MW 387, 5 g, 1.0 equivalents) in DMA (50 mL) was added the
4-isopropylphenol (3 g, 2 equivalents), followed by cesium
carbonate (10 g, 2.0 equivalents). The reaction mixture was heated
at 90 degrees Celsius for 8 hours, until HPLC indicated the
reaction had finished. The reaction mixture was filtered, the DMA
portion was discarded. The filter cake was placed in 10% aqueous
HCl and stirred for 30 minutes to remove the cesium salts. The
solid (3.5 g) isopropylphenoxyphenyl THP-protected hydroxamate
separated and was filtered. The .sup.1H NMR, MS, and HPLC were
consistent with the desired compound.
[1063] Step B: Into a stirred solution of aqueous HCl (20 mL) and
acetonitrile (20 mL) was added the crude isopropyl-phenoxyphenyl
THP-protected hydroxamate from Step A and the resulting mixture was
stirred for 1-2 hours. The solvent was concentrated via a stream of
nitrogen over the surface of the solution. The solid was filtered
and dried to give 2.2 g of the title compound as a tan solid. The
.sup.1H NMR, MS, and HPLC were consistent with the desired
compound. MS (CI) M+H calculated for C.sub.21H.sub.25NO.sub.6S:
419, found 419.
EXAMPLE 126
Preparation of Resin II
[1064] Step 1: Attachment of Compound of Example 55, Part D, to
Resin I
[1065] A 500 mL round-bottomed flask was charged with of resin I
[Floyd et al., Tetrahedron Lett. 1996, 37, 8045-8048] (8.08 g, 9.7
mmol) and 1-methyl-2-pyrrolidinone (50 mL). A magnetic stirring bar
was added, and the resin slurry slowly stirred. A separate solution
of the compound of Part D, Example 55 (5.58 g, 19.4 mmol) in
1-methyl-2-pyrrolidinone (35 mL) was added to the slurry followed
by addition of benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonium
hexafluorophosphate (10.1 g, 19.4 mmol) in one portion. Once the
hexafluorophosphate salt had dissolved, 4-methylmorpholine (4.26
mL, 39 mmol) was added dropwise. The reaction slurry was stirred at
room temperature for 24 hours, then the resin was collected in a
sintered-disc funnel and washed with N,N-dimethylformamide,
methanol, methylene chloride and diethyl ether (3.times.30 mL each
solvent). The resin was dried in vacuo to yield 10.99 g
polymer-bound hydroxymate as a tan polymeric solid. Theoretical
loading on polymer was 0.91 mmol/g. FTIR microscopy showed bands at
1693 and 3326 cm.sup.-1 indicative of the hydroxamate carbonyl and
nitrogen-hydrogen stretches, respectively.
[1066] Step 2: Preparation of Resin III: Reaction of Resin II with
Nucleophiles
[1067] Resin II (50 mg, 0.046 mmol) was weighed into an 8 mL glass
vial, and a 0.5 M solution of a nucleophile in
1-methyl-2-pyrrolidinone (1 mL) was added to the vessel. In the
case of phenol and thiophenol nucleophiles, cesium carbonate (148
mg, 0.46 mmol) was added, and in the case of substituted piperazine
nucleophiles, potassium carbonate (64 mg, 0.46 mmol) was added. The
vial was capped and heated to 70 to 155 degrees Celsius for 24-48
hours, then cooled to room temperature. The resin was drained and
washed with 1-methyl-2-pyrrolidinone,
1-methyl-2-pyrrolidinone/water (1:1), water, 10% acetic acid/water,
methanol, and methylene chloride (3.times.3 mL each solvent).
[1068] Step 3: Cleavage of Hydroxamic Acids from the
Polymer-Support
[1069] Resin III was treated with a trifluoroacetic acid/water
mixture (19:1, 1 mL) for 1 hour at room temperature. During that
time, the resin became a deep red color. The resin was then drained
and washed with trifluoroacetic acid/water (19:1) and methylene
chloride (2.times.1 mL each solvent), collecting the combined
filtrates in a tared vial. The volatiles were removed in vacuo,
then a toluene/methylene chloride mixture (2 mL each) was added to
the residue. The mixture was again concentrated in vacuo. The
product was characterized by electrospray mass spectroscopy.
[1070] The following hydroxamic acids were synthesized from resin
II using the conditions of Step 2 with the indicated nucleophile,
followed by release from the polymer using Step 3 reaction
conditions. TABLE-US-00151 ##STR3465## Example MS (ES) Number R
Nucleophile m/z 126-1 ##STR3466## 4'-hydroxy-2'- methylacetophenone
451 (M + NH.sub.4) 126-2 ##STR3467## 5,6,7,8-tetrahydro- 2-naphthol
455 (M + NH.sub.4) 126-3 ##STR3468## 3,4-dichlorophenol 462 (M +
NH.sub.4) 126-4 ##STR3469## 4-hydroxyphenethyl alcohol 439 (M +
NH.sub.4) 126-5 ##STR3470## 4-hydroxy diphenylmethane 485 (M +
NH.sub.4) 126-6 ##STR3471## 4-phenylphenol 471 ((M + NH.sub.4)
126-7 ##STR3472## 4-(methylthio)phen- ol 441 (M + NH.sub.4) 126-8
##STR3473## 3-metoxyphenol 425 (M + NH.sub.4) 126-9 ##STR3474##
4-chlorophenol 429 (M + NH.sub.4) 126-10 ##STR3475## 4-bromophenol
590 (M + Cs) 126-11 ##STR3476## 4-(imidazol-1-yl)- phenol 444 (M +
H) 126-12 ##STR3477## 3-hydroxyphenethyl alcohol 439 (M + NH.sub.4)
126-13 ##STR3478## 3-(4-hydroxy- phenyl)-1-phenol 453 (M +
NH.sub.4) 126-14 ##STR3479## 4-bromo-3- methylphenol 487 (M +
NH.sub.4) 126-15 ##STR3480## 3-hydroxybenzyl alcohol 425 (M +
NH.sub.4) 126-16 ##STR3481## 4-methoxyphenol 425 (M + NH.sub.4)
126-17 ##STR3482## 4-chloro-3- methylphenol 558 (M + Cs) 126-18
##STR3483## 2-naphthol 560 (M + Cs) 126-19 ##STR3484## p-cresol 409
(M + NH.sub.4) 126-20 ##STR3485## 4-hydroxybenzyl alcohol 408 (M +
H) 126-21 ##STR3486## 1-naphthol 445 (M + NH.sub.4) 126-22
##STR3487## 3-hydroxypyridine 379 (M + H) 126-23 ##STR3488##
8-hydroxyjulolidine 473 (M + H) 126-24 ##STR3489##
2,6-quinolinediol 445 (M + H) 126-25 ##STR3490## 5-hydroxy-2-
methylpyridine 393 (M + H) 126-26 ##STR3491## 2,3-dihydroxy-
pyridine 412 (M + H) 126-27 ##STR3492## 4-hydroxyphenyl acetic acid
453 (M + NH.sub.4) 126-28 ##STR3493## 4-amino-m-cresol 407 (M + H)
126-29 ##STR3494## 8-quinolinol 429 (M + H) 126-30 ##STR3495##
4-cyclopentylphenol 463 (M + NH.sub.4) 126-31 ##STR3496##
3,4-dimethyl- thiophenol 439 (M + NH.sub.4) 126-32 ##STR3497##
m-thiocresol 425 (M + NH.sub.4) 126-33 ##STR3498## 3-methoxythio-
phenol 441 (M + NH.sub.4) 126-34 ##STR3499## 4-methoxythio- phenol
441 (M + NH.sub.4) 126-35 ##STR3500## 4-fluorothiophenol 429 (M +
NH.sub.4) 126-36 ##STR3501## 3-chlorothiophenol 445 (M + NH.sub.4)
126-37 ##STR3502## 4-chlorothiophenol 445 (M + NH.sub.4) 126-38
##STR3503## 4-aminothiophenol 426 (M + NH.sub.4) 126-39 ##STR3504##
2-naphthalenethiol 461 (M + NH.sub.4) 126-40 ##STR3505## piperidine
126-41 ##STR3506## 4-benzyl-2- hydroxypiperidine 475 (M + H) 126-42
##STR3507## nipecotamide 468 (M + H) 126-43 ##STR3508##
3-hydroxypiperidine 385 (M + H) 126-44 ##STR3509##
4-(1-pyrrolidinyl)- piperidine 438 (M + H) 126-45 ##STR3510## ethyl
nipecitate 441 (M + H) 126-46 ##STR3511## 3-piperidinyl- methanol
512 (M + TFA) 126-47 ##STR3512## 4-benzylpiperidine 459 (M + H)
126-48 ##STR3513## 4-methylpiperidine 383 (M + H) 126-49
##STR3514## 3-methylpiperidine 383 (M + H) 126-50 ##STR3515##
4-hydroxy-4- phenylpiperidine 461 (M + H) 126-51 ##STR3516## ethyl
isonipecotate 441 (M + H) 126-52 ##STR3517## 1,4-dioxa-8-
azaspiro(4,5)decane 427 (M + H) 126-53 ##STR3518## isonipecotamide
412 (M + H) 126-54 ##STR3519## nipecotamide 412 (M + H) 126-55
##STR3520## 4-piperidino- piperidine 452 (M + H) 126-56 ##STR3521##
morpholine 388 (M + NH.sub.4) 126-57 ##STR3522## 4-phenylpiperidine
445 (M + H) 126-58 ##STR3523## 3,5-dimethyl- piperidine 414 (M +
NH.sub.4) 126-59 ##STR3524## 4-(4-bromophenyl)-4- piperidinol 539
(M + H) 126-60 ##STR3525## 1-methylpiperazine 384 (M + H) 126-61
##STR3526## 4-piperazino- acetophenone 488 (M + H) 126-62
##STR3527## 1-benzylpiperiazine 460 (M + H) 126-63 ##STR3528##
N-(.alpha.,.alpha.,.alpha.-trifluoro-m- tolyl)piperazine 514 (M +
H) 126-64 ##STR3529## 1-(2-pyridyl)- piperazine 447 (M + H) 126-65
##STR3530## 1-(4-fluorophenyl)- piperazine 464 (M + H) 126-66
##STR3531## 1-piperonyl- piperazine 504 (M + H) 126-67 ##STR3532##
1-(4-nitrophenyl)- piperazine 491 (M + H) 126-68 ##STR3533##
1-hydroxyethyl- ethoxypiperazine 458 (M + H) 126-69 ##STR3534##
1-acetylpiperazine 412 (M + H) 126-70 ##STR3535## 1-ethylpiperazine
398 (M + H) 126-71 ##STR3536## 1-(2-fluorophenyl)- piperazine 464
(M + H) 126-72 ##STR3537## benzyl-1-piperazine carboxylate 504 (M +
H) 126 ##STR3538## ethyl-N-piperazine carboxylate 442 (M + H) 127
##STR3539## N-(2-hydroxyethyl)- piperazine 414 (M + H) 128
##STR3540## 1-(2-methoxy- phenyl)piperazine 476 (M + H)
EXAMPLE XX
Large Scale Preparation of Resin IIIa
[1071] Resin II (5 g, 0.91 mmol) was weighed into an oven-dried
three-necked round bottom flask fitted with a temperature probe, an
overhead stirring paddle, and a nitrogen inlet. Anhydrous
1-methyl-2-pyrrolidinone (35 mL) was added to the flask followed by
ethyl isonipecotate (7.0 mL, 45.5 mmol). The resin slurry was
stirred slowly with the overhead stirrer, and the mixture was
heated to 80 degrees Celsius with a heating mantle for 65 hours.
The flask was thereafter cooled to room temperature.
[1072] The resin was collected in a sintered-disk glass funnel and
washed with N,N-dimethylformamide, methanol and methylene chloride
(3.times.30 mL each solvent). The resin was dried in vacuo to
provide 5.86 g of resin IIIa as off-white resin beads. The
theoretical loading of the polymer was 0.81 mmol/g. TFA cleavage
performed on 50 mg of resin IIIa as described in step 3 yielded
10.4 mg of off-white solid spectroscopically indistinguishable from
the reaction product using ethyl isonipecotate of Example 211.
EXAMPLE YY
Large Scale Preparation of Resin IIIb
[1073] Preparation of resin IIIb followed the procedure described
for preparation of resin IIIa, except ethyl nipecotate was
substituted for ethyl isonipecotate. The yield after drying in
vacuo was 5.77 g of resin IIIb as pale yellow resin beads. The
theoretical loading of the polymer was 0.81 mmol/g. TFA cleavage
performed on 50 mg of resin IIIb as described in step 3 yielded
14.7 mg of off-white solid spectroscopically indistinguishable from
the reaction product using ethyl nipecotate of Example 212.
[1074] Step 4: Hydrolysis of Polymer-Bound Ester: Preparation of
Resin IVa
[1075] Resin IIIa (5.8 g, 4.5 mmol) was weighed into a three-necked
round bottomed flask fitted with an overhead stirring paddle.
1,4-Dioxane was added to the flask, and the resin slurry was
stirred for 15 minutes. Then, a 4 M solution of KOH (5 mL, 20 mmol)
was added, and the mixture was stirred for 44 hours. The resin was
thereafter collected in a sintered-disk glass funnel and washed
with dioxane/water (9:1), water, 10% acetic acid/water, methanol
and methylene chloride (3.times.30 mL each solvent). The resin was
dried in vacuo to yield 5.64 g of resin IVa as off-white polymer
beads. FTIR microscopy showed bands at 1732 and 1704 cm.sup.-1 and
a broad band from 2500-3500 cm.sup.-1. The theoretical loading of
the polymer-bound acid was 0.84 mmol/g.
Preparation of Resin Ivb:
[1076] Using the procedure described in Step 4, resin IIIb (5.71 g,
4.5 mmol) was converted into 5.61 g of resin IVb. FTIR microscopy
showed bands at 1731 and 1705 cm.sup.-1 and a broad band from
2500-3500 cm.sup.-1. The theoretical loading of the polymer-bound
acid was 0.84 mmol/g.
[1077] Step 5: Amide Bond Formation: Preparation of Resin V
[1078] Into a fritted reaction vessel was weighed either resin IVa
or resin IVb (50 mg, 0.042 mmol), and the vessel was capped under
nitrogen. A 0.5 M solution of hydroxybenzotriazole in
1-methyl-2-pyrrolidinone (0.3 mL, 0.15 mmol) was added followed by
a 0.5 M solution of diisopropylcarbodiimide in
1-methyl-2-pyrrolidinone (0.3 mL, 0.15 mmol). The resin was stirred
using a tabletop stirring plate for 15 minutes, then a 0.7 M
solution of the amine in 1-methyl-2-pyrrolidinone (0.3 mL, 0.21
mmol) was added. The reaction mixture was stirred for 6 hours, then
the resin was drained and washed with 1-methyl-2-pyrrolidinone
(3.times.1 mL). The reaction was repeated using the same amounts of
reagents described above. The reaction mixture was stirred for 16
hours, then the resin was drained and washed with
1-methyl-2-pyrrolidinone, methanol and methylene chloride
(3.times.1 mL each solvent).
[1079] The following hydroxamic acids were synthesized using the
indicated polymer-bound acid and the indicated amine in Step 5
reaction conditions followed by release from the polymer using Step
3 reaction conditions. TABLE-US-00152 ##STR3541## Example Posi- MS
(ES) Number Resin Amine R tion m/z 129 IVa -- ##STR3542## 4 130 IVa
methylamine ##STR3543## 4 131 IVa morpholine ##STR3544## 4 482 (M +
H) 132 IVa ethanolamine ##STR3545## 4 456 (M + H) 133 IVa
1,3-diamino- ##STR3546## 4 469 (M + H) 134 IVa ethylamine
##STR3547## 4 440 (M + H) 135 IVa glycine t- butyl ester HCl
##STR3548## 4 470 (M + H) 136 IVa L-histidine methyl ester HCl
##STR3549## 4 564 (M + H) 137 IVa ##STR3550## ##STR3551## 4 428 (M
+ H) 138 IVb -- ##STR3552## 3 139 IVb methylamine ##STR3553## 3 426
(M + H) 140 IVb morpholine ##STR3554## 3 482 (M + H) 141 IVb
ethanolamine ##STR3555## 3 456 M + H) 142 IVb 1,3-diamino- propane
##STR3556## 3 469 (M + H) 143 IVb ethylamine ##STR3557## 3 440 (M +
H) 144 IVb glycine t- butyl ester HCl ##STR3558## 3 470 (M + H) 145
IVb L-histidine methyl ester HCl ##STR3559## 3 564 (M + H) 146 IVb
##STR3560## ##STR3561## 3 428 (M + H) 147 IVa dimethylamine
##STR3562## 4 440 (M + H) 148 IVa diethylamine ##STR3563## 4 468 (M
+ H) 149 IVa piperidine ##STR3564## 4 480 (M + H) 150 IVa 1-methyl-
piperazine ##STR3565## 4 495 (M + H) 151 IVa N-Boc- piperazine
##STR3566## 4 481 (M + H) 152 IVa eethyl isonipecotate ##STR3567##
4 552 (M + H) 153 IVa ethyl nipecotate ##STR3568## 4 552 (M + H)
154 IVa ethyl pipecolate ##STR3569## 4 552 (M + H) 155 IVb
dimethylamine ##STR3570## 3 440 (M + H) 156 IVb piperidine
##STR3571## 3 480 (M + H) 157 IVb 1-methyl- piperazine ##STR3572##
3 495 (M + H) 158 IVb N-Boc- piperazine ##STR3573## 3 481 (M + H)
159 IVb ethyl isonipecotate ##STR3574## 3 552 (M + H) 160 IVb ethyl
nipecotate ##STR3575## 3 552 (M + H) 161 IVb ethyl pipecolate
##STR3576## 3 552 (M + H) 162 IVb hexamethylene- imine ##STR3577##
3 494 (M + H) 163 IVb 1,3,3- trimethyl-6- azavicyclo [3.2.1]-octane
##STR3578## 3 548 (M + H) 164 IVa 1,3,3- trimethyl-6- azabicyclo
[3.2.1]-octane ##STR3579## 4 548 (M + H) 165 IVa hexamethylene-
imine ##STR3580## 4 494 (M + H) 166 IVb 3-pyrrolidinol ##STR3581##
3 482 (M + H) 167 IVb (3S)-(-)-3- (dimethyl- amino)- pyrrolidine
##STR3582## 3 509 (M + H) 168 IVb (3S)-(-)-3- (t-butoxy-
carbonylamino)- pyrrolidine ##STR3583## 3 481 (M + H) 169 IVb
cis-2,6- dimethyl- morpholine ##STR3584## 3 510 (M + H) 170 IVb
decahydro- quinoline ##STR3585## 3 534 (M + H) 171 IVb 4-(1-
pyrrolidinyl)- piperidine ##STR3586## 3 549 (M + H) 172 IVb
pyrrolidine ##STR3587## 3 466 (M + H) 173 IVa 3-pyrrolidinol
##STR3588## 4 482 (M + H) 174 IVa (3S)-(-)-3- (dimethyl amino)-
pyrrolidine ##STR3589## 4 509 (M + H) 175 IVa (3S)-(-)-3-
(t-butoxy- carbonylamino)- pyrrolidine ##STR3590## 4 481 (M + H)
176 IVa cis-2,6- dimethyl- morpholine ##STR3591## 4 510 (M + H) 177
IVa decahydro- quinoline ##STR3592## 4 534 (M + H) 178 IVa 4-(1-
pyrrolidinyl)- piperidine ##STR3593## 4 549 (M + H) 179 IVa
pyrrolidine ##STR3594## 4 466 (M + H) 180 IVa 2,2,2-tri-
fluoroethyl- amine ##STR3595## 4 494 (M + H) 181 IVa butylamine
##STR3596## 4 468 (M + H) 182 IVa diallylamine ##STR3597## 4 492 (M
+ H) 183 IVa 3,3'- iminobis(N,N- dimethylpropyl- amine) ##STR3598##
4 582 (M + H) 184 IVa iso- propylamine ##STR3599## 4 454 (M + H)
185 IVa 4-amino- morpholine ##STR3600## 4 497 (M + H) 186 IVa 3-
(aminomethyl)- pyridine ##STR3601## 4 503 (M + H) 187 IVa
cyclohexyl- amine ##STR3602## 4 494 (M + H) 188 IVa 1-aminoindane
##STR3603## 4 528 (M + H) 189 IVa 2-thiophene- methylamine
##STR3604## 4 508 (M + H) 190 IVa 4-methyl- piperidine ##STR3605##
4 494 (M + H) 191 IVa 4-benzyl- piperidine ##STR3606## 4 570 (M +
H) 192 IVa 4-phenyl- piperidine ##STR3607## 4 556 (M + H) 193 IVa
4-benzyl-4- hydroxy- piperidine ##STR3608## 4 586 (M + H) 194 IVa
cycloheptyl- amine ##STR3609## 4 508 (M + H) 195 IVa 4-aminomethyl-
pyridine ##STR3610## 4 503 (M + H) 196 IVa 2-amino- methyl-
pyridine ##STR3611## 4 503 (M + H) 197 IVa 4-fluoro- benzylamine
##STR3612## 4 520 (M + H) 198 IVa dibenzylamine ##STR3613## 4 592
(M + H) 199 IVa 1,2,3,4- tetrahydro- isoquinoline ##STR3614## 4 528
(M + H)
Large Scale Preparation of Resin IIIc
[1080] Resin II (3.01 g, 2.74 mmol) was weighed into an oven-dried
three-necked round bottomed flask fitted with an overhead stirring
paddle, a temperature probe and an nitrogen inlet.
1-Methyl-2-pyrrolidinone (25 mL) was added followed by piperazine
(2.36 g, 27.4 mmol) and cesium carbonate (8.93 g, 27.4 mmol).
Additional 1-methyl-2-pyrrolidinone (10 mL) was added, and the
reaction mixture was heated to 100 degrees Celsius and stirred 18
hours. The flask was cooled to room temperature, and the resin was
collected in a sintered-disc funnel and washed with
N,N-diethylformamide/water (1:1), water, 10% acetic acid/water,
methanol, and methylene chloride (3.times.30 mL each solvent). The
yield after drying in vacuo was 3.14 g of resin IIIb as pale yellow
resin beads. The theoretical loading of the polymer was 0.86
mmol/g. TFA cleavage performed on 50 mg of resin IIIb as described
in Step 3 yielded 21 mg of off-white solid spectroscopically
indistinguishable from the compound of Example 209.
[1081] Step 6: Amide Bond Formation with resin IIIc: Preparation of
Resin VI
[1082] Into a fritted reaction vessel was placed the carboxylic
acid (0.215 mmol) and 1-hydroxybenzotriazole (44 mg, 0.326 mmol).
The vessel was capped under nitrogen, and 1-methyl-2-pyrrolidinone
was added followed by diisopropylcarbodiimide (0.034 mL, 0.215
mmol). The solution was agitated on a tabletop shaker for 15
minutes, then resin IIIc (50 mg, 0.043 mmol) was added in one
portion. The reaction mixture was shaken for 16 hours, then the
resin was drained and washed with 1-methyl-2-pyrrolidinone,
methanol and methylene chloride (3.times.1 mL each solvent). In the
case of N-9-fluorenyl-methoxycarbonyl-protected amino acids, the
resin was further treated with a piperidine/N,N-dimethylformamide
solution (1:4, 1 mL) for 30 minutes. The resin was drained and
washed with N,N-dimethylformamide, methanol and methylene chloride
(3.times.1 mL each solvent).
[1083] The following hydroxamic acids were synthesized from resin
IIIc using Step 6 with the indicated carboxylic acid, followed by
release from the polymer using Step 3 reaction conditions.
TABLE-US-00153 ##STR3615## Example Carboxylic MS (ES) Number Acid R
m/z 200 cyclo- hexanecarboxylic acid ##STR3616## 502 (M + Na) 201
1,2,3,4-tetra- hydronaphthylene- 2-carboxylic acid ##STR3617## 545
(M + NH.sub.4) 202 cycloheptane- carboxylic acid ##STR3618## 511 (M
+ NH.sub.4) 203 N-9- fluorenylmethoxy- carbonyl-L- proline
##STR3619## 467 (M + H) 204 N-9- fluorenylmethoxy-
carbonyl-L-valine ##STR3620## 469 (M + H)
[1084] Step 7: Preparation of Resin VII
[1085] Resin IIIc (1.0 g, 0.86 mmol) was weighed into an oven-dried
100 mL round-bottomed flask and a magnetic stirring bar and septum
with a nitrogen needle were added. Methylene chloride (10 mL) was
added, and the resin slurry was slowly stirred.
p-Nitrophenylchloro-formate (0.867 g, 4.3 mmol) was added in one
portion, followed by dropwise addition of diisopropylethylamine
(0.75 mL, 4.3 mmol). A slight warming was noted with the addition.
The reaction was stirred at room temperature for 18 hours, then the
resin was collected in a sintered-disc glass funnel and washed with
methylene chloride, methanol and methylene chloride (3.times.10 mL
each solvent).
[1086] The polymer-bound product was dried in vacuo yielding 1.25 g
of resin VII as brown resin beads. FTIR microscopy showed bands at
1798, 1733, 1696 and 1210 cm.sup.-1. Theoretical loading of the
polymer was 0.75 mmol/g.
[1087] Step 8: Reaction of Resin VII with Amines Preparation of
Resin VIII
[1088] An 8 mL vial was charged with resin VII (50 mg, 0.038 mmol)
and a small magnetic stirring bar, and a 0.5 M solution of the
amine in 1-methyl-2-pyrrolidinone (1 mL) was added. The vial was
capped and heated to 50 degrees Celsius. The resin slurry was
gently stirred for 15 hours, then the vial was cooled to room
temperature. The resin was collected in a fritted reaction vessel
and washed with 1-methyl-2-pyrrolidinone, methanol and methylene
chloride (3.times.10 mL each solvent).
[1089] The following hydroxamic acids were synthesized from resin
VII using Step 8 reaction conditions with the indicated amine,
followed by release from the polymer using Step 3 reaction
conditions. TABLE-US-00154 ##STR3621## MS Example Carboxylic (ES)
Number Acid R m/z 205 -- ##STR3622## 535 (M + H) 206 piperidine
##STR3623## 481 (M + H) 207 morpholine ##STR3624## 501 (M + Na) 208
dimethylamine ##STR3625## 441 (M + H) 209 piperazine ##STR3626##
482 (M + H) 210 1-methyl- piperazine ##STR3627## 496 (M + H) 211
ethyl isonipecotate ##STR3628## 553 (M + H) 212 ethyl nipecotate
##STR3629## 553 (M + H)
EXAMPLE xxx:
Preparation of
4-[(4-bromoophenyl)-sulfonyl]tetrahydro-2H-pyran-4-carboxylic
acid
[1090] ##STR3630##
[1091] Part A: Preparatiion of ##STR3631##
[1092] A 60% sodium hydride oil dispersion (4.0 g, 0.1 mole) was
weighed into an oven-dried 3-necked 500 mL round-bottomed flask in
a nitrogen glove bag, and the flask was fitted with an nitrogen
inlet, a temperature probe, an overhead stirring paddle and rubber
septa. Anhydrous tetrahydrofuran (200 mL) was added to the flask,
which was then cooled in an ice bath. 4-Bromothiophenol (18.91 g,
0.1 mole) was added dropwise, maintaining a temperature less than 7
degrees Celsius. Vigorous gas evolution was noted throughout
addition. After complete addition, the mixture was stirred for 10
minutes with cooling. Then, methyl bromoacetate (9.5 mL, 0.1 mole)
was added dropwise, maintaining a temperature less than 7 degrees
Celsius. The reaction was stirred for 10 minutes with cooling, then
the ice bath was removed and the mixture stirred an additional 30
minutes. The reaction was quenched by the addition of 5 mL water,
then solvent was removed on rotary evaporator. The residual oil was
partitioned between ethyl acetate (200 mL) and water (200 mL). The
organic layer was washed with 5% hydrogen choride/water
(1.times.200 mL), saturated sodium bicarbonate (1.times.200 mL) and
brine (1.times.200 mL). The organic phase was dried over magnesium
sulfate and concentrated to give 24.53 g of the product as a yellow
oil (94%). .sup.1H NMR was consistent with the desired structure.
The mass spectrum showed an m/z 260 (M+H).
[1093] Part B: Preparation of ##STR3632##
[1094] The compound of part A, above, (24.5 g, 0.094 mole) was
weighed into a 1.0 L round-bottomed flask fitted with an overhead
stirring paddle and temperature probe, then 550 mL of methanol were
added, followed by 55 mL of water, causing the solution to become
slightly turbid. The flask was immersed in an ice bath, and once
the temperature fell below 5 degrees Celsius, Oxone.RTM. (144.5 g,
0.235 mole) was added portionwise over 5 minutes. A slight increase
in temperature to 8 degrees Celsius was noted. The reaction was
stirred with cooling for 10 minutes, then the ice bath was removed.
After 4 hours, reversed-phase high pressure liquid chromatography
showed a single component at 13.6 minutes. The reaction mixture was
filtered, and the solid washed exhaustively with methanol. The
combined filtrates were concentrated on a rotary evaporator, and
the residual material partitioned between ethyl acetate (300 mL)
and water (200 mL). The organic layer was washed with water
(3.times.200 mL), saturated sodium bicarbonate (1.times.200 mL) and
brine (1.times.200 mL), then the organic phase was dried over
magnesium sulfate and concentrated to give 25 g of the product as a
tan solid. Trituration with hexane provided 24.3 g of pure sulfone
as an off-white solid (88%). .sup.1H NMR was consistent with the
desired structure. The mass spectrum showed an m/z 293 (M+H).
[1095] Part C: Preparation of ##STR3633##
[1096] A 60% sodium hydride oil dispersion (5.76 g, 0.144 mole) was
weighed into an oven-dried 3-necked 1.0 L round-bottomed flask in a
nitrogen glove bag, and then the flask was fitted with an nitrogen
inlet, a temperature probe, an overhead stirring paddle and rubber
septa. Anhydrous N,N-dimethylformamide (250 mL) was added to the
flask, mechanical stirring was initiated, and the mixture heated to
50 degrees Celsius. A solution of the compound of part B, above,
(17.59 g, 0.06 mole) and dibromodiethyl ether (14.5 g, 0.06 mole)
in 40 mL of N,N-dimethylformamide was added dropwise to the sodium
hydride slurry, maintaining a temperature between 50-55 degrees
Celsius and a steady evolution of hydrogen. After complete
addition, the temperature of the reaction mixture was increased to
65 degrees Celsius, and the mixture was stirred for 2 hours. The
flask was then cooled to room temperature, and the flask was
immersed in an ice bath. When the temperature fell below 20 degrees
Celsius, 0.5 L ice water was added.
[1097] The mixture was transferred to a 4.0 L separatory funnel, an
additional 1.0 L of water was added, and the mixture was extracted
with ethyl acetate (3.times.200 mL). The combined organic layers
were washed with 5% hydrogen chloride/water (1.times.200 mL),
saturated sodium carbonate (1.times.200 mL), and brine (1.times.200
mL), dried over magnesium sulfate, and concentrated in vacuo to
give 18.2 g of crude product as a yellow semi-solid.
Recrystallization from ethyl acetate/hexane gave 6.53 g of pure
product as tan crystals (30%). .sup.1H NMR was consistent with the
desired structure. The mass spectrum showed an m/z 363 (M+H).
[1098] Part D: Preparation of the Title Compound
[1099] A solution of the compound of part C, above, (4.57 g, 12.6
mmol) in 50 mL of dry tetrahydrofuran in an oven-dried 100 mL
round-bottomed flask was stirred at room temperature under
nitrogen, and 4.84 g of potassium trimethylsilanolate (37.7 mmol)
were added in one portion. The mixture was stirred for two hours,
then 10 mL of water were added dropwise. The volatiles were removed
in vacuo, and the residue partitioned between 100 mL ethyl ether
and 100 mL water. The aqueous layer was acidified to a pH value of
less than 2 using concentrated hydrogen chloride, causing a white
precipitate. This mixture was extracted with ethyl acetate
(3.times.75 mL), and the combined ethyl acetate layers were dried
over magnesium sulfate and concentrated in vacuo to give 4.15 g of
pure product as a white solid (94%). .sup.1H NMR
(CDCl.sub.3/CD.sub.3OD) 2.10 (m, 4H), 3.28 (m, 2H), 3.90 (m, 2H),
7.60 (m, 4H). The mass spectrum showed an m/z 349 (M+H).
[1100] Step 9: Attachment to Resin I:
[1101] Preparation of Resin IX
[1102] Following the procedure outlined in Step 1 before, 3.13 g of
the title compound of the above preparation was reacted with 3.73 g
of resin I to give 5.19 g of polymer-bound hydroxymate as a tan
polymeric solid. Theoretical loading on polymer was 0.86 mmol/g.
FTIR microscopy showed bands at 1693 and 3332 cm.sup.-1 indicative
of the hydroxamate carbonyl and nitrogen-hydrogen stretches,
respectively.
[1103] Step 10: Palladium Catalyzed Reaction of Resin IX with
Boronic Acids: Preparation of Resin VII
[1104] Into an 8 mL glass solid phase reaction vessel was weighed
resin IX (50 mg, 0.043 mmol). The resin was washed with dry
dimethoxyethane (2.times.3 mL). A 0.017 M solution of the palladium
tetrakistriphenyl phosphine (0.6 mL, 0.01 mmol) was added to the
vessel followed by a 0.6 M solution of the boronic acid in 1:1
dimethoxyethane/ethanol (0.6 mL, 0.36 mmol) and a 2M solution of
potassium hydroxide in water (0.4 mL, 0.8 mmol). The vessel was
maintained under a positive pressure of argon and heated at 90
degrees Celsius 16 hours. The vessel was cooled to room
temperature, then the resin was drained and washed with
1-methyl-2-pyrrolidinone, 1-methyl-2-pyrrolidinone/water (1:1),
water, acetic acid/water (1:9), methanol, and methylene chloride
(3.times.3 mL each solvent).
[1105] The following hydroxamic acids were synthesized from resin
IX using Step 10 reaction conditions with the indicated boronic
acid, followed by cleavage from the polymer using Step 3 reaction
conditions. TABLE-US-00155 ##STR3634## MS Example (ES) Number
Boronic Acid R m/z 213 phenylboronic acid ##STR3635## 362 (M + H)
214 3-nitrophenyl- boronic acid ##STR3636## 424 (M + NH.sub.4) 215
thiophene-3- boronic acd ##STR3637## 368 (M + H) 216
4-chlorobenzene boronic acid ##STR3638## 413 (M + NH.sub.4) 217
4-methyl- benzeneboronic acid ##STR3639## 414 (M + K) 218 4-(2-
pyrrolidinyl- ethoxy)- benzeneboronic acid ##STR3640## 476 (M +
NH.sub.4) 219 3-(tri- fluoromethyl)- benzeneboronic acid
##STR3641## 430 (M + H) 220 4-fluoro- benzeneboronic acid
##STR3642## 418 (M + K) 221 4-(tri- fluoromethyl)- benzeneboronic
acid ##STR3643## 447 (M + NH.sub.4) 222 4-fluoro-3- methylbenzene-
boronic acid ##STR3644## 411 (M + NH.sub.4) 223 3,4-dimethyl-
benzeneboronic acid ##STR3645## 407 (M + NH.sub.4) 224
1-naphthylene- boronic acid ##STR3646## 412 (M + H) 225 2-methyl-
benzeneboronic acid ##STR3647## 376 (M + H) 226 4-t-butyl-
benzeneboronic acid ##STR3648## 418 (M + H) 227 2-naphthylene-
boronic acid ##STR3649## 412 (M + H) 228 3-formyl- benzeneboronic
acid ##STR3650## 390 (M + H) 229 benzofuran-2- boronic acid
##STR3651## 419 (M + NH.sub.4) 230 2-formyl- benzeneboronic acid
##STR3652## 390 (M + H) 231 4-formyl- benzeneboronic acid
##STR3653## 390 (M + H) 232 3-amino- benzeneboronic acid
##STR3654## 377 (M + H)
EXAMPLE 233
Preparation of Monomethanesulfonate salts:
N-hydroxy-4-[[4-(phenylthio)
phenyl]-sulfonyl]-1-(2-propynyl)-4-piperidine-carboxamide,
monomethanesulfonate
[1106] ##STR3655## First Preparatiion
[1107] Part A: A solution of the compound of Example 9, Part J (2.1
g, 4.5 mmol) in warm H.sub.2O (200 mL) was admixed with NaHCO.sub.3
at ambient temperature. After stirring for 20 minutes, the
resulting white solid was isolated by filtration, washed with water
and dried at 37 degree Celsius in a vacuum oven to afford the free
base of the title compound as a white solid (1.7 g, 86%); Anal.
calcd for C.sub.21H.sub.22N.sub.2O.sub.4S.sub.2.0.3% H.sub.2O: C,
57.86; H, 5.23; N, 6.43; S, 14.71. Found: C, 57.84; H, 4.96; N,
6.39; S, 14.89.
[1108] Part B: Methanesulfonic acid (0.28 mL, 4.1 mmol) was added
to a solution of the free base of part A (1.6 g, 3.7 mmol) in
methanol (10 mL) at ambient temperature. After 3 hours, the
resulting solid was isolated by filtration, washed with methanol,
and dried at ambient temperature in a vacuum oven to afford the
monomethanesulfonate titled compound as a white solid (1.6 g, 81%):
Anal. calcd for
C.sub.21H.sub.22N.sub.2O.sub.4S.sub.2CH.sub.4O.sub.3: C, 48.51; H,
5.18; N, 5.14; S, 17.66. Found: C, 48.88; H, 5.15; N, 5.23; S,
17.81.
Second Preparation
[1109] Methanesulfonic acid (0.91 mL, 14 mmol) was added to a
solution of the protected hydroxamate of Example 9, Part I (6.0 g,
12 mmol) in methanol (37 mL) under a nitrogen atmosphere. After 1
hour, the precipitate was isolated by filtration, washed with
methanol, and dried at 40 degrees Celsius in a vacuum oven for 1
day to afford the monomethanesulfonate title compound as a white
solid (5.5 g, 89%) identical to the material from Example 233,
First Preparation.
[1110] Methanesulfonate salts of the other cyclic amine compounds
disclosed herein can be similarly prepared using the methods of the
above two preparations.
EXAMPLE 234-280
[1111] The compounds of Example 234-280 were prepared as described
for the compounds of Example 129-199. TABLE-US-00156 ##STR3656##
Example Posi- MS (ES) Number Resin Amine R tion m/z 234 IVb
N-methyl homopiperazine ##STR3657## 4 509 (M + H) 235 IVb
6,7-dimethoxy- 1,2,3,4- tetrahydro- isoquinoline HCl ##STR3658## 4
588 (M + H) 236 IVb tetrahydro- pyridine ##STR3659## 4 478 (M + H)
237 IVb R-3-hydroxy- piperidine HCl ##STR3660## 4 496 (M + H) 238
IVb phenyl- piperazine ##STR3661## 4 557 (M + H) 239 IVb benzyl-
piperazine ##STR3662## 4 571 (M + H) 240 IVa methyl homopiperazine
##STR3663## 3 509 (M + H) 241 IVa 6,7-dimethoxy- 1,2,3,4-
tetrahydro- isoquinoline HCl ##STR3664## 3 588 (M + H) 242 IVa
tetrahydro- pyridine ##STR3665## 3 478 (M + H) 243 IVa R-3-hydroxy-
piperidine HCl ##STR3666## 3 496 (M + H) 244 IVa phenyl- piperazine
##STR3667## 3 557 (M + H) 245 IVa benzyl- piperazine ##STR3668## 3
571 (M + H) 246 IVb hydroxyethyl- piperazine ##STR3669## 4 525 (M +
H) 247 IVb 1-(2,3-xylyl)- piperazine HCl ##STR3670## 4 585 (M + H)
247 IVb 1-(4-methoxy- phenyl)- piperazine 2HCl ##STR3671## 4 587 (M
+ H) 249 IVb 1-(3- chlorophenyl)- piperazine 2HCl ##STR3672## 4 591
(M + H) 250 IVb 1-(m-tolyl)- piperazine 2HCXl ##STR3673## 4 571 (M
+ H) 251 IVb 1-(2,5-dimethyl- phenyl)piperazine ##STR3674## 4 585
(M + H) 252 IVb 1-(p-tolyl)- piperazine 2HCl ##STR3675## 4 571 (M +
H) 253 IVb 1-(3-methoxy- phenyl)- piperazine 2HCl ##STR3676## 4 587
(M + H) 254 IVb 1-(3,4-dichloro- phenyl)piperazine ##STR3677## 4
625 (M + H) 255 IVb 1-(2-methoxy)- piperazine HCl ##STR3678## 4 587
(M + H) 256 IVb nipecotamide ##STR3679## 4 523 (M + H) 257 IVb
isonipecotamide ##STR3680## 4 523 (M + H) 258 IVb 1-(2-(2-hydroxy-
ethoxyethyl)- piperazine ##STR3681## 4 569 (M + H) 259 IVb 1-ethyl-
piperazine ##STR3682## 4 509 (M + H) 260 IVb 1-(2- chlorophenyl)-
piperazine HCl ##STR3683## 4 591 (M + H) 261 IVb 1-(4-methoxy-
phenyl)-2-methyl- piperazine ##STR3684## 4 601 (M + H) 262 IVb
2-methyl- piperidine ##STR3685## 4 494 (M + H) 263 IVb
3,5-dimethyl- piperidine ##STR3686## 4 508 (M + H) 264 IVb
N-(2-piperidyl- methyl)- diethylamine ##STR3687## 4 565 (M + H) 265
IVb thiomorpholine HCl ##STR3688## 4 498 (M + H) 266 IVb N-methyl-
propargylamine ##STR3689## 4 464 (M + H) 267 IVb N-methyl-8-
alaninenitrile ##STR3690## 4 479 (M + H) 268 IVb 1-methyl-4-
(methyl- amino)piperidine ##STR3691## 4 523 (M + H) 269 IVb
2-ethyl- piperidine ##STR3692## 4 508 (M + H) 270 IVb 1-piperazine-
carboxaldehyde ##STR3693## 4 509 (M + H) 271 IVb 2-piperidin-
ethanol ##STR3694## 4 524 (M + H) 272 IVb 2-(methylamino) ethanol
##STR3695## 4 470 (M + H) 273 IVb N-methylallyl- amine ##STR3696##
4 466 (M + H) 274 IVb 2-(piperidino- methyl)- piperidine
##STR3697## 4 577 (M + H) 275 IVb 1-(1-phenyl- ethyl)- piperazine
##STR3698## 4 585 (M + H) 276 IVb 1-(2-phenyl- ethyl)- piperiazine
##STR3699## 4 585 (M + H) 277 IVb N,N-dimethyl- N'-ethylene-
diamine ##STR3700## 4 511 (M + H) 278 IVb N,N-diethyl-N- methylene-
ethylenediamine ##STR3701## 4 525 (M + H) 279 IVb 1-cyclohexyl-
piperazine ##STR3702## 4 563 (M + H) 280 IVb 2,6-dimethyl-
piperidine ##STR3703## 4 508 (M + H)
EXAMPLE 281-288
[1112] The following hydroxamic acids were synthesized from Resin
1.times. using Step 10 with the indicated boronic acid, followed by
cleavage from the polymer using Step 3, as discussed previously for
Example 213-232: TABLE-US-00157 ##STR3704## MS Example (ES) N umber
Boronic acid R m/z 281 4-methoxy- benzeneboronic acid ##STR3705##
392 (M + H) 282 3-methoxy- benzeneboronic acid ##STR3706## 392 (M +
H) 283 4-methylthio- benzeneboronic acid ##STR3707## 408 (M + H)
284 4-MeNHSO.sub.2- benzene boronic acid ##STR3708## 455 (M + H)
285 4-carboxybenzene- boronic acid ##STR3709## 406 (M + H) 286
2-trifluoromethyl- benzeneboronic acid ##STR3710## 430 (M + H) 287
3,5-bis- (trifluoromethyl)- benzeneboronic acid ##STR3711## 498 (M
+ H) 288 2,3,4-trifluoro- benzeneboronic acid ##STR3712## 416 (M +
H)
EXAMPLE 289-294
[1113] Step 11: Preparation of Resin XI.
[1114] Into a fritted reaction vessel was placed Resin IIIc (50 mg,
0.043 mmol). A 0.43 M solution of the isocyanate in
1-methyl-2-pyrrolidinone (1 mL, 0.43 mmol) was added followed by
diisopropylethylamine (75 uL, 0.43 mmol). The vessel was capped
under nitrogen, agitated on a tabletop shaker, and heated to 50
degrees Celsius for 48 hours. Then, the vessel was cooled to room
temperature, and the resin was drained and washed with
1-methyl-2-pyrrolidinone, 1:1 1-methyl-2-pyrrolidinone/water,
water, 1:9 acetic acid/water, methanol and methylene chloride
(3.times.1 mL each solvent).
[1115] The following hydroxamic acids were synthesized from Resin
IIIc using Step 11 with the indicated isocyanate, followed by
release from the polymer using the reaction conditions in Step 3.
TABLE-US-00158 ##STR3713## MS Example (FAB) Number Isocyanate R m/z
289 phenyl isocyanate ##STR3714## 489.1 (M + H) 290 4-fluorophenyl
isocyanate ##STR3715## 507.2 (M + H) 291 4-phenoxyphenyl isocyanate
##STR3716## 581.3 (M + H) 292 4-butoxyphenyl issocyanate
##STR3717## 561.4 (M + H) 293 4-phenylphenyl- isocyanate
##STR3718## 565.2 (M + H) 294 .alpha.,.alpha.,.alpha.-trifluoro
m-tolyl- isocyanate ##STR3719## 557.2 (M + H)
EXAMPLE 295-300
[1116] Step 12: Synthesis of Resin XII.
[1117] Into a fritted reaction vessel was placed resin VII (50 mg,
0.038 mmol) and cesium carbonate (122 mg, 0.38 mmol). A 0.43 M
solution of the phenol in 1-methyl-2-pyrrolidinone (1 mL, 0.43
mmol) was added, then the vessel was capped under nitrogen The
reaction mixture was agitated on a tabletop shaker and heated to 50
degrees Celsius for 48 hours. Then, the vessel was cooled to room
temperature, and the resin was drained and washed with
1-methyl-2-pyrrolidinone, 1:1 1-methyl-2-pyrrolidinone/water,
water, 1:9 acetic acid/water, methanol and methylene chloride
(3.times.1 mL each solvent).
[1118] The following hydroxamic acids were synthesized from Resin
IIIc using Step 11 with the indicated isocyanate, followed by
release from the polymer using the reaction conditions in Step 3.
TABLE-US-00159 ##STR3720## MS Example (FAB) Number Phenol R m/z 295
phenol ##STR3721## 490 (M + H) 296 3-methoxyphenol ##STR3722## 520
(M + H) 297 4-chlorophenol ##STR3723## 524.1 (M + H) 298 p-cresol
##STR3724## 504.3 (M + H) 299 4-phenylphenol ##STR3725## 566.3 (M +
H) 300 4-hydroxy- diphenyl- methane ##STR3726## 580.2 (M + H)
EXAMPLE 301-323
[1119] Large Scale Preparation of Resin Xa
[1120] A fritted reaction vessel was charged with Resin IX (1 g,
0.86 mmol) and a 0.008 M solution of
tetrakis-(triphenylphosphine)palladium(0) in ethylene glycol
dimethyl ether (5 mL, 0.04 mmol). A 1 M solution of
2-formylbenzeneboronic acid in a 1:1 mixture of ethanol and
ethylene glycol dimethyl ether (6 mL, 6 mmol) was added followed by
1 M cesium carbonate in water (2 mL, 2 mmol). The vessel was sealed
under argon and heated to 90 degrees Celsius for 16 hours. After
this, the vessel was cooled to room temperature, and the resin
drained and washed with the following sequence of solvents
dimethylformamide, 1:1 dimethylformamide/water, dimethylformamide,
water, methanol, methylene chloride (3.times.5 mL each solvent).
The resin was dried in vacuo to yield 1.025 g of product as a tan
polymeric solid. The theoretical loading of the polymer was 0.84
mmol/g. TFA cleavage performed on 35 mg of Resin Xa as described in
Step 3 yielded 11.2 mg of a tan solid.
Large Scale Preparation of Resin Xb.
[1121] Preparation of Resin Xb followed the identical procedure
described for preparation of resin Xa, except
3-formylbenzeneboronic acid was substituted for
2-formylbenzeneboronic acid. The yield after drying in vacuo was
1.052 g of Resin Xb as tan resin beads. The theoretical loading of
the polymer was 0.84 mmol/g. TFA cleavage performed on 20 mg of
Resin Xb as described in Step 3 yielded 6.5 mg of a tan solid.
Large Scale Preparation of Resin Xc.
[1122] Preparation of Resin Xc followed the identical procedure
described for preparation of resin Xa, except
4-formylbenzeneboronic acid was substituted for
2-formylbenzeneboronic acid. The yield after drying in vacuo was
1.03 g of Resin Xc as tan resin beads. The theoretical loading of
the polymer was 0.84 mmol/g. TFA cleavage performed on 28 mg of
Resin Xb as described in Step 3 yielded 9.4 mg of a tan solid.
[1123] Step 13: Synthesis of Resin XIII.
[1124] Into a fritted reaction vessel was placed resin Xa, Xb or Xc
(50 mg, 0.042 mmol). A 0.2 M solution of the amine in
trimethylorthoformate (1 mL, 0.2 mmol) was added, and the vessel
was capped under nitrogen. The reaction mixture was agitated on a
tabletop shaker for 3 hours. Then, a 0.5 M solution of sodium
triacetoxyborohydride in 1-methyl-2-pyrrolidinone (0.8 mL, 0.4
mmol) was added to the vessel, and the mixture was agitated an
additional 40 hours. After this, the resin was drained and washed
(3.times.1 mL each solvent) with the following sequence of
solvents: 1-methyl-2-pyrrolidinone, methanol, water, methanol and
methylene chloride.
[1125] The following hydroxamic acids were synthesized using the
indicated resin-bound aldehyde and the indicated amine following
the procedure outlined in Step 13 followed by release from the
polymer using the procedure in Step 3: TABLE-US-00160 ##STR3727##
MS Example posi- (ES) Number Resin Amine R tion m/z 301 Xb 1,2,3,4-
tetrahydro- isoquinoline ##STR3728## 3 507 (M + H) 302 Xb 1-methyl-
piperazine ##STR3729## 3 474 (M + H) 303 Xb piperazine ##STR3730##
3 460 (M + H) 304 Xb benzylamine ##STR3731## 3 481 (M + H) 305 Xb
propylamine ##STR3732## 3 433 (M + H) 306 Xb ethyl iso- nipecotate
##STR3733## 3 531 (M + H) 307 Xa benzylamine ##STR3734## 2 481 (M +
H) 308 Xa isopropyl- amine ##STR3735## 2 433 (M + H) 309 Xa
1,2,3,4- tetrahydro- isoquinoline ##STR3736## 2 507 (M + H) 310 Xa
1-methyl- piperazine ##STR3737## 2 474 (M + H) 311 Xc piperidine
##STR3738## 4 459 (M + H) 312 Xc morpholine ##STR3739## 4 461 (M +
H) 313 Xc 1-methyl- piperazine ##STR3740## 4 474 (M + H) 314 Xc
1-phenyl- piperazine ##STR3741## 4 536 (M + H) 315 Xc 1-benzyl-
piperazine ##STR3742## 4 550 (M + H) 316 Xc 1-(4-fluoro- phenyl)-
piperazine ##STR3743## 4 554 (M + H) 317 Xc N,N,N'- trimethyl-
ethylenediamine ##STR3744## 4 476 (M + H) 318 Xc hexamethyl-
eneimine ##STR3745## 4 473 (M + H) 319 Xc 1-methyl- homopiperazine
##STR3746## 4 488 (M + H) 320 Xc dieethylamine ##STR3747## 4 447 (M
+ H) 321 Xc pyrrolidine ##STR3748## 4 445 (M + H) 322 Xb
dimethylamine ##STR3749## 3 419 (M + H) 323 Xc 1-t-butoxy-
carbonyl- piperazine ##STR3750## 4 460 (M + H)
Large Scale Preparation of Resin Xd
[1126] Preparation of Resin Xd followed the identical procedure
described for preparation of resin Xa, except
4-carboxybenzeneboronic acid was substituted for
2-formylbenzeneboronic acid. The yield after drying in vacuo was
1.07 g of Resin Xd as a tan polymeric solid. The theoretical
loading of the polymer was 0.83 mmol/g. TFA cleavage performed on
23.5 mg of Resin Xd as described in Step 3 yielded 4.9 mg of a tan
solid.
[1127] Step 14: Synthesis of Resin XIV
[1128] Into a fritted reaction vessel was placed resin Xd (50 mg,
0.042 mmol). The resin was washed with 1-methyl-2-pyrrolidinone
(2.times.3 mL), then a 1.0 M solution of
benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonium
hexafluorophosphate in 1-methyl-2-pyrrolidinone (0.2 mL, 0.2 mmol)
was added, followed by a 0.7 M solution of the amine in
1-methyl-2-pyrrolidinone (0.3 mL, 0.21 mmol) and a 1.0 M solution
of the diisopropylethylamine in 1-methyl-2-pyrrolidinone (0.4 mL,
0.4 mmol). The vessel was capped under nitrogen, and the reaction
mixture was agitated on a tabletop shaker for 24 hours. Then, the
resin was drained and washed with 1-methyl-2-pyrrolidinone
(3.times.1 mL). The reaction with the amine was repeated by
addition of a 1.0 M solution of
benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonium
hexafluorophosphate in 1-methyl-2-pyrrolidinone (0.2 mL, 0.2 mmol),
a 0.7 M solution of the amine in 1-methyl-2-pyrrolidinone (0.3 mL,
0.21 mmol) and a 1.0 M solution of the diisopropylethylamine in
1-methyl-2-pyrrolidinone (0.4 mL, 0.4 mmol). The vessel was capped
under nitrogen, and the reaction mixture was agitated an additional
8 hours. Then, the resin was drained and washed with the following
sequence of solvents: 1-methyl-2-pyrrolidinone, 1:1
1-methyl-2-pyrrolidinone/water, water, 1:9 acetic acid/water,
methanol, methylene chloride (3.times.1 mL each solvent).
[1129] The following hydroxamic acids were synthesized using Resin
Xd and the indicated amine following the procedure outlined in Step
14 followed by release from the polymer using the procedure in Step
3: TABLE-US-00161 ##STR3751## MS (ES) Example amine R m/z 324
propylamine ##STR3752## 447 (M + H) 325 piperidine ##STR3753## 473
(M + H) 326 morpholine ##STR3754## 475 (M + H) 327 1-methyl-
piperazine ##STR3755## 488 (M + H) 328 diethylamine ##STR3756## 461
(M + H) 329 pyrrolidine ##STR3757## 459 (M + H) 330 ethyl
isonipecotate ##STR3758## 545 (M + H) 331 1-phenyl- piperazine
##STR3759## 550 (M + H) 332 ethyl nipecotate ##STR3760## 545 (M +
H) 333 1-benzyl- piperazine ##STR3761## 564 (M + H) 334
3,5-dimethyl- piperidine ##STR3762## 501 (M + H) 335 thiomorpholine
hydrochloride ##STR3763## 491 (M + H)
EXAMPLE 336
Preparation of
4-[[4-[4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-1-piperidinyl]-phenyl]-
sulfonyl]tetrahydro-2H-pyran-4-carboxylic acid
[1130] Part A: To a solution of the product of Example 11, Part B
(10.0 g, 34.7 mmol) in 1-methyl-2-pyrrolidinone (70 mL) was added
4-(N-t-butoxycarbonylamino)piperidine (10.43 g, 52.1 mmol),
followed by diisopropylethylamine (6.0 mL, 34.7 mmol). The
resulting mixture was heated at 80 degrees Celsius for 24 hours and
then cooled to room temperature. The crude mixture was poured into
700 mL water, and the cloudy aqueous layer was extracted with ethyl
acetate (3.times.150 mL). The combined organic layers were washed
with 5% potassium hydrogen sulfate (2.times.150 mL) and brine
(2.times.150 mL), dried over magnesium sulfate, and concentrated in
vacuo to give the crude ester as a white foamy solid (13.04 g,
78%).
[1131] Part B: To a solution of the ester of part A (5.74 g, 11.9
mmol) in a mixture of ethanol (80 mL) and tetrahydrofuran (40 mL)
was added 2 N sodium hydroxide (60 mL; 120 mmole). The resulting
solution was heated to 60 degrees Celsius for 1 hour and then
cooled to room temperature. The solution was concentrated in vacuo,
and the residue was partitioned between water (300 mL) and ethyl
acetate (200 mL). The aqueous layer was separated and acidified
with concentrated hydrogen chloride to pH 2. A white precipitate
formed, which was collected by vacuum filtration and dried in vacuo
to give the carboxylic acid as a white solid (4.88 g, 88%).
[1132] Part C: To a suspension of the carboxylic acid from part B
(4.88 g, 10.4 mmol) in methylene chloride (35 mL) was added
trifluoroacetic acid (35 mL), resulting in dissolution of the
solid. After fifteen minutes at ambient temperature, the solution
was concentrated in vacuo. The product was triturated with diethyl
ether to give the amino acid as an off-white solid (4.92 g,
98%).
[1133] Part D: A suspension of the amino acid from part C (4.92 g,
10.21 mmol) in a mixture of 10% sodium carbonate/water (35 mL),
water (100 mL) and dioxane (100 mL) was cooled in an ice bath. To
the cooled suspension is added a solution of
9-fluorenylmethylsuccinimidyl carbonate (3.79 g, 11.23 mmol) in
dioxane (50 mL) dropwise. After complete addition, the ice bath was
removed, and the mixture warmed to room temperature. After one
hour, the solution was concentrated in vacuo, and the residue was
partitioned between water (300 mL) and ethyl acetate (200 mL). The
aqueous layer was separated and acidified with concentrated
hydrogen chloride to pH 2. The white precipitate formed, which was
collected by vacuum filtration, washed with hexanes and dried in
vacuo to give the title compound as a white solid (5.46 g,
91%).
[1134] Step 15: Preparation of Resin XVI.
[1135] Part A: Following the procedure outlined in Step 1 above,
the product of Example 336 (2.4 g, 4.06 mmol) was reacted with
Resin I (1.7 g, 2.03 mmol) to give Resin XV as a tan polymeric
solid (2.82 g). Theoretical loading on polymer was 0.71 mmol/g.
[1136] Part B: Resin XV from part A above (2.76 g, 1.96 mmol) was
suspended in a 1:4 piperidine/dimethylformamide solution (20 mL) in
a fritted reaction vessel and agitated on a tabletop shaker for 5
minutes. The resin was drained, and an additional volume of a 1:4
mixture of piperidine/dimethylformamide (20 mL) was added to the
vessel. The slurry was agitated at room temperature for 30 minutes.
After this, the resin was drained and washed with
dimethylformamide, methanol, and methylene chloride (3.times.20 mL
each solvent). After drying in vacuo, the title resin was obtained
as a tan polymeric solid (2.30 g).
[1137] Step 16: Acylation/Sulfonylation of Resin XVI.
[1138] In a fritted reaction vessel, Resin XVI (50 mg, 0.043 mmol)
was washed with 1-methyl-2-pyrrolidinone (2.times.1 mL). Then, a
0.22 M solution of the acylating or sulfonylating reagent in
1-methyl-2-pyrrolidinone (1 mL, 0.22 mmol) was added to the resin
followed by diisopropylethylamine (40 uL, 0.22 mmol). The vessel
was capped under nitrogen and agitated on a tabletop shaker at room
temperature for 16 hours. Then, the resin was drained and washed
with 1-methyl-2-pyrrolidinone, water, 1:9 acetic acid/water,
methanol and methylene chloride (3.times.1 mL each solvent).
[1139] The following hydroxamic acids were synthesized from Resin
XVI using Step 16 with the indicated acylating or sulfonylating
reagent, followed by release from the polymer using the reaction
conditions in Step 3. TABLE-US-00162 ##STR3764## Acylating or
Sulfonylating MS (ES) Example Reagent R m/z 337 benzoyl chloride
##STR3765## 488.2 (M + H) 338 nicotinyl chloride-HCl ##STR3766##
489.2 (M + H) 339 benzenesulfonyl chloride ##STR3767## 462 (M + H)
340 1-methyl- imidazole-4- sulfonyl chloride ##STR3768## 528.2 (M +
H) 341 acetyl chloride ##STR3769## 426.2 (M + H) 342
methanesulfonyl chloride ##STR3770## 462.1 (M + H) 343 cyclohexyl
isocyanate ##STR3771## 509 (M + H) 344 2-methoxyphenyl isocyanate
##STR3772## 533 (M + H) 345 phenyl isocyanate ##STR3773## 503 (M +
H) 346 beta-pheenylethyl isocyanate ##STR3774## 531 (M + H) 347
isopropyl isocyanate ##STR3775## 469 (M + H) 348 4-fluorophenyl
isocyanate ##STR3776## 521 (M + H) 349 4-(methylthio)- phenyl
isocyanate ##STR3777## 549 (M + H) 350 4-phenoxyphenyl isocyanate
##STR3778## 595 (M + H) 351 4-phenylphenyl isocyanate ##STR3779##
579 (M + H) 352 benzyl isocyanate ##STR3780## 517 (M + H) 353 ethyl
isocyanate ##STR3781## 455 (M + H) 354 alpha,alpha,alpha-
trifluoro-m-tolyl isocyanate ##STR3782## 571 (M + H) 355 ethyl
3-isocyanato- propionate ##STR3783## 527 (M + H) 356 methyl oxalyl
chloride ##STR3784## 470 (M + H) 357 diethylcarbamyl chloride
##STR3785## 483 (M + H) 358 dimethylcarbamyl chloride ##STR3786##
455 (M + H) 359 diisopropyl carbamyl chloride ##STR3787## 511 (M +
H) 360 hydrocinnamoyl chloride ##STR3788## 516 (M + H) 361
cinnamoyl chloride ##STR3789## 514 (M + H) 361 isobutyl-
chloroformate ##STR3790## 484 (M + H) 363 benzylchloro- formate
##STR3791## 518 (M + H), 364 trichloroethyl- chloroformate
##STR3792## 558 (M + H)
EXAMPLE 365-371
[1140] Step 17: Reductive Alkylation of Resin XVI.
[1141] In a fritted reaction vessel, Resin XVI (50 mg, 0.043 mmol)
was washed methylene chloride (2.times.1 mL). Then, a 1 M solution
of the aldehyde or ketone in methylene chloride (1 mL, 1 mmol) was
added to the resin. The vessel was capped under nitrogen and
agitated on a tabletop shaker at room temperature for 3 hours. The
resin was drained and washed with methylene chloride (3.times.1
mL). Then, the resin was retreated with the 1 M solution of the
aldehyde or ketone in methylene chloride (1 mL, 1 mmol). The resin
was drained and washed with methylene chloride (3.times.1 mL each
solvent). Then, a 1 M solution of sodium triacetoxyborohydride in
1-methyl-2-pyrrolidinone (1 mL, 1 mmol) was added to the resin, and
the reaction was stirred overnight. After this, the resin was
drained and washed with 1-methyl-2-pyrrolidinone, methanol, water,
1:9 acetic acid/water, methanol and methylene chloride (3.times.1
mL each solvent).
[1142] The following hydroxamic acids were synthesized from Resin
XVI using Step 17 with the indicated aldehyde or ketone, followed
by release from the polymer using the conditions in Step 3.
TABLE-US-00163 ##STR3793## Exam- ple Num- Aldehyde or MS (ES) ber
ketone R m/z 365 butyraldehyde ##STR3794## 440 (M + H) 366 acetone
##STR3795## 426 (M + H) 367 N-propyl- 4-pyridine ##STR3796## 509 (M
+ H) 368 4-t-butylcyclo- hexanone ##STR3797## 522 (M + H) 369
2-pyridine- carboxaldehyde ##STR3798## 475 (M + H) 370
4'-(trifluoro- methoxy)- acetophenone ##STR3799## 572 (M + H) 371
2-furaldehyde ##STR3800## 464 (M + H)
EXAMPLE 372
Preparation of
4-[[4-(4-butoxyphenoxy)-phenyl]sulfonyl]tetrahydro-N-hydroxy-2H-pyran-4-c-
arboxamide
[1143] ##STR3801##
[1144] Part A: To a solution of the product of Example 55 (3.1 g, 8
mmol) in dimethylacetamide (20 mL) was added cesium carbonate (7.28
g, 24 mmol) and 4-butoxyphenol (2.66 g, 16 mmol). The slurry was
stirred at ninety five degrees Celsius for nineteen hours. The
reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with brine, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. Chromatography (on silica,
ethyl acetate/hexanes) provided the substituted THP hydroxamate as
an off-white foam (3.96 g, 93%). HRMS (ES+) M+NH.sub.4.sup.+
calculated for C.sub.27H.sub.35N.sub.1O.sub.8S.sub.1F 551.24, found
551.24.
[1145] Part B: To a solution of the THP hydroxamate from part A
(3.9 g, 7.3 mmol) in 1,4-dioxane (20 mL) was added 4N HCl dioxane
solution (20 mL) and methanol (20 mL). After fifteen minutes at
ambient temperature the reaction was diluted with ethyl acetate and
washed with water, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as a white solid (2.75
g, 84%). HRMS (ES+) M+H.sup.+ calculated for
C.sub.22H.sub.27N.sub.1O.sub.7S.sub.1: 450.16, found 450.16.
EXAMPLE 373
Preparation of
tetrahydro-N-hydroxy-4-[[4-[3-(trifluoromethyl)phenoxy]phenyl]-sulfonyl]--
2H-pyran-4-carboxamide
[1146] ##STR3802##
[1147] Part A: To a solution of the product of Example 55 (3.1 g, 8
mmol) in dimethylacetamide (20 mL) was added cesium carbonate (7.28
g, 24 mmol) and m-(trifluoromethyl)phenol (1.95 mL, 16 mmol). The
slurry was stirred at ninety five degrees Celsius for nineteen
hours. The reaction was concentrated in vacuo. The residue was
taken up in ethyl acetate, washed with brine, dried over
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
Chromatography (on silica, ethyl acetate/hexanes) provided the
substituted THP hydroxamate as a white foam (4.1 g, 97%). HRMS
(ES+) M+H.sup.+ calculated for
C.sub.24H.sub.26N.sub.1O.sub.7S.sub.1F.sub.3 530.15, found
530.14.
[1148] Part B: To a solution of the THP hydroxamate from part A
(3.9 g, 7.4 mmol) in 1,4-dioxane (20 mL) was added 4N HCl dioxane
solution (20 mL) and methanol (20 mL). After fifteen minutes at
ambient temperature, the reaction was diluted with ethyl acetate
and washed with water, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as a white solid (1.9
g, 58%). HRMS (ES+) M+H.sup.+ calculated for
C.sub.19H.sub.18N.sub.1O.sub.6S.sub.1F.sub.3: 446.09, found
446.09.
EXAMPLE 374
Preparation of
tetrahydro-N-hydroxy-4-([4-[4-(methylthio)phenoxy]phenyl]sulfonyl]-2H-pyr-
an-4-carboxamide
[1149] ##STR3803##
[1150] Part A: To a solution of the product of Example 55 (3.1 g, 8
mmol) in dimethylacetamide (20 mL) was added cesium carbonate (7.28
g, 24 mmol)- and 4-(methylthio)phenol (2.24 g, 16 mmol). The slurry
was stirred at ninety five degrees Celsius for twenty four hours.
The reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with brine, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. Chromatography (on silica,
ethyl acetate/hexanes) provided the substituted THP hydroxamate as
a white foam (4.1 g, 100%). HRMS (ES+) M+H.sup.+ calculated for
C.sub.24H.sub.29N.sub.1O.sub.7S.sub.2: 508.15, found 508.15.
[1151] Part B: To a solution of the THP hydroxamate from part A
(4.0 g, 7.9 mmol) in 1,4-dioxane (20 mL) was added 4N HCl dioxane
solution (20 mL) and methanol (20 mL). After fifteen minutes at
ambient temperature, the reaction was diluted with ethyl acetate
and washed with water, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as a white solid (1.9
g, 57%). HRMS (ES+) M+H.sup.+ calculated for
C.sub.19H.sub.21N.sub.1O.sub.6S.sub.2: 424.09, found 424.09.
EXAMPLE 375
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-(phenylmethyl)phenoxy]phenyl]-sulfonyl]-2H--
pyran-4-carboxamide
[1152] ##STR3804##
[1153] Part A: To a solution of the product of Example 55 (2.7 g, 7
mmol) in dimethylacetamide (15 mL) was added cesium carbonate (6.84
g, 21 mmol) and 4-hydroxydiphenylmethane (2.8 g, 14 mmol). The
slurry was stirred at ninety degrees Celsius for nineteen hours.
The reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with brine, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. Chromatography (on silica,
ethyl acetate/hexanes) provided the substituted THP hydroxamate as
a light yellow foam (3.7 g, 96%). HRMS (ES+) M+H.sup.+ calculated
for C.sub.30H.sub.33N.sub.1O.sub.7S.sub.1: 552.21, found
552.21.
[1154] Part B: To a solution of the THP hydroxamate from part A
(3.5 g, 6.4 mmol) in 1,4-dioxane (16 mL) was added 4N HCl dioxane
solution (16 mL) and methanol (16 mL). After fifteen minutes at
ambient temperature the reaction was diluted with ethyl acetate and
washed with water, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as a white solid (1.95
g, 67%). HRMS (ES+) M+H.sup.+ calculated for
C.sub.25H.sub.25N.sub.1O.sub.6S.sub.1: 468.15, found 468.15.
EXAMPLE 376
Preparation of
tetrahydro-N-hydroxy-4-[[4-(4-hydroxyphenoxy)phenyl]sulfonyl]-2H-pyran-4--
carboxamide
[1155] ##STR3805##
[1156] Part A: To a solution of the product of Example 55) (2.7 g,
7 mmol) in dimethylacetamide (20 mL) was added cesium carbonate
(6.84 g, 21 mmol) and 4-(benzyloxy)phenol (2.8 g, 14 mmol). The
slurry was stirred at ninety five degrees Celsius for six hours.
The reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with brine, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. Chromatography (on silica,
ethyl acetate/hexanes) provided the substituted THP hydroxamate as
a white foam (3.94 g, 99%). HRMS (ES+) M+NH.sub.4.sup.+ calculated
for C.sub.30H.sub.33N.sub.1O.sub.8S.sub.1: 585.23, found
585.23.
[1157] Part B: To a solution of the THP hydroxamate from part A
(1.5 g, 2.64 mmol) in glacial acetic acid (5 mL) was added
concentrated HCl (5 mL) and the reaction was heated to sixty
degrees Celsius for twenty minutes. The reaction was cooled,
diluted with water (100 mL) and extracted with ethyl acetate. The
ethyl acetate extract was washed with water three times, brine,
dried over Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
The product was recrystallized (acetone/hexanes) to give the title
compound as a white solid (810 mg, 78%). HRMS (ES+)
M+NH.sub.4.sup.+ calculated for
C.sub.18H.sub.19N.sub.1O.sub.7S.sub.1: 468.15, found 468.15.
EXAMPLE 377
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-[(1-methylethyl)thio]phenoxy]-phenyl]-sulfo-
nyl]-2H-pyran-4-carboxamide
[1158] ##STR3806##
[1159] Part A: To a suspension of 4-hydroxythiophenol (5.0 g, 40
mmol) and potassium carbonate (8.0 g, 58 mmol) in dimethylformamide
(70 mL) was added 2-iodopropane (7.0 g, 41 mmol). The slurry was
stirred at ambient temperature for one hour. The reaction was
concentrated in vacuo. The residue was taken up in ethyl acetate,
washed two times with water, 10% HCl solution, brine, dried over
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
Chromatography (on silica, ethyl acetate/hexanes) provided the
substituted phenol as a clear colorless oil (5.1 g, 76%).
[1160] Part B: To a solution of the product of Example 55 (3.1 g, 8
mmol) in dimethylacetamide (20 mL) was added cesium carbonate (7.28
g, 24 mmol) and the phenol from part A (2.7 g, 16 mmol). The slurry
was stirred at ninety five degrees Celsius for fifteen hours. The
reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with brine, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. Chromatography (on silica,
ethyl acetate/hexanes) provided the substituted THP hydroxamate as
a white foam (4.15 g, 97%). HRMS (ES+) M+H.sup.+ calculated for
C.sub.26H.sub.33N.sub.1O.sub.7S.sub.2: 536.18, found 538.17.
[1161] Part C: To a solution of the THP hydroxamate from part A
(3.9 g, 7.3 mmol) in 1,4-dioxane (18 mL) was added 4N HCl dioxane
solution (18 mL) and methanol (18 mL). After fifteen minutes at
ambient temperature, the reaction was diluted with ethyl acetate
and washed with water, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as an off white solid
(2.32 g, 71%). HRMS (ES+) M+H.sup.+ calculated for
C.sub.21H.sub.25N.sub.1O.sub.6S.sub.2: 452.12, found 452.12.
EXAMPLE 378
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-(1-methylethoxy)phenoxy)phenyl]-sulfonyl]-2-
H-pyran-4-carboxamide
[1162] ##STR3807##
[1163] Part A: To a solution of benzoic acid, 4-hydroxyphenylester
(8.57 g, 40 mmol) in dimethylacetamide (65 mL) was added potassium
carbonate (8.3 g, 60 mmol) and 2-iodopropane (5 mL, 50 mmol). The
slurry was stirred at sixty five degrees Celsius for one hour. The
reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with water three times, brine, dried over
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to yield the
isopropoxy compound as a light gray solid (9.7 g, 95%).
[1164] Part B: To a slurry of the isopropoxy compound from part A
(9.7 g, 38 mmol) in 1,4-dioxane (20 mL) and water (20 mL) was added
2.5N sodium hydroxide solution (26 mL, 65 mmol). The slurry was
stirred at sixty degrees Celsius for four hours. The reaction was
cooled and 6N hydrochloric acid solution was added until the pH=5.
The reaction was extracted with methylene chloride. The organic
layer was washed with 5% ammonium hydroxide solution four times,
water, brine, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to yield the phenol as an amber oil (5.4 g,
94%).
[1165] Part C: To a solution of the product of Example 55 (3.1 g, 8
mmol) in dimethylacetamide (20 mL) was added cesium carbonate (7.28
g, 24 mmol) and the phenol from part B (2.4 g, 16 mmol). The slurry
was stirred at ninety five degrees Celsius for twenty one hours.
The reaction was concentrated in vacuo. The residue was taken up in
ethyl acetate, washed with water three times, brine, dried over
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
Chromatography (on silica, ethyl acetate/hexanes) provided the
substituted THP hydroxamate as an off white foam (3.65 g, 88%).
HRMS (ES+) M+H.sup.+ calculated for
C.sub.26H.sub.33N.sub.1O.sub.8S.sub.1: 520.20, found 520.20.
[1166] Part D: To a solution of the THP hydroxamate from part C
(3.5 g, 6.7 mmol) in 1,4-dioxane (17 mL) was added 4N HCl dioxane
solution (17 mL) and methanol (17 mL). After fifteen minutes at
ambient temperature, the reaction was diluted with ethyl acetate
and washed with water, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as an off white solid
(2.2 g, 80%). HRMS (ES+) M+H.sup.+ calculated for
C.sub.21H.sub.25N.sub.1O.sub.7S.sub.1: 436.14, found 436.14.
EXAMPLE 379
Preparation of
tetrahydro-N-hydroxy-4-[[4-[4-[(trifluoromethyl]phenoxy]-phenyl]-sulfonyl-
]-2H-pyran-4-carboxamide
[1167] ##STR3808##
[1168] Part A: In dry equipment under nitrogen, sodium hydride (60%
oil dispersion) (11. g; 0.275 mol) was added to a solution of
4-[4-(trifluoromethyl)phenoxy]-phenol (50.0 g, 0.197 mol) in dry
dimethylformamide (150 mL) at zero degrees Celsius. After fifteen
minutes, a solution of dimethylthiocarbamoyl chloride (32.0 g,
0.259 mol) in dry dimethylformamide (100 mL) was added. The
reaction was stirred at ambient temperature for sixteen hours. The
reaction was poured onto 10% hydrochloric acid solution (1 L).
Vacuum filtration of the resulting precipitate provided the thiono
compound as a white solid (67.0 g, 100%).
[1169] Part B: The thiono compound from part A (70 g, 0.2 mol) was
heated to three hundred seventeen degrees Celsius for thirty
minutes behind a safety shield. The reaction exothermed to three
hundred thirty degrees Celsius. The heat was removed and the
reaction came to ambient temperature to yield the thiocarbamate as
a brown solid (70 g, 100%).
[1170] Part C: To a solution of the thiocarbamate from part B (65.0
g, 0.19 mol) in methanol (510 mL) with a subsurface nitrogen stream
was added 2.5N sodium hydroxide solution (160 mL, 0.4 mol). The
slurry was stirred at seventy four degrees Celsius for two hours.
The reaction was cooled and the methanol removed in vacuo. The
residue was diluted with water (100 mL) and extracted with diethyl
ether four times. A subsurface stream of nitrogen was added to the
aqueous solution and sodium chloroacetate (22.2 g, 0.19 mol) was
added. The reaction was stirred an ambient temperature and after
thirty minutes the nitrogen stream was removed. After twelve hours,
the solution was cooled and 6N hydrochloric acid was added until
the pH=1. The slurry was extracted with ethyl acetate four times.
The combined ethyl acetate extracts were washed with 0.1N
hydrochloric acid, water, brine, dried over Na.sub.2SO.sub.4,
filtered and dried in vacuo to give the thioacetic acid as a tan
solid (61.0 g, 98%).
[1171] Part D: To a solution of the thioacetic acid from part C
(54.45 g, 0.166 mol) in tetrahydrofuran (370 mL) was added water
(45 mL) and Oxone.RTM. (306 g, 0.498 mol) at twenty degrees
Celsius. An exotherm to forty two degrees Celsius was noted. After
two hours, the reaction was filtered and the cake was washed well
with tetrahydrofuran and then water (250 mL) was added to the
filtrate. The filtrate was concentrated in vacuo. The slurry was
extracted with ethyl acetate four times. The combined extracts were
washed with water three times, brine, dried over MgSO.sub.4,
filtered, and concentrated in vacuo to give the sulfone as a beige
solid (60.0 g, 100%).
[1172] Part E: A solution of the sulfone from part D (119.52 g,
0.332 mol) in methanol (660 mL) and 4N hydrochloric acid in dioxane
solution (20 mL) was stirred at ambient temperature for twelve
hours. The reaction was heated to a boil and cooled slowly to
ambient temperature. The resulting crystals were filtered, washed
well with cold methanol, and dried to give the methyl ester as a
white solid (89.4 g, 72%).
[1173] Part F: To a solution of the methyl ester from part E (64.5
g, 0.180 mol) in dimethylacetamide (360 mL) was added potassium
carbonate (66.8 g, 0.48 mol), bis-(2-bromoethyl)ether (40 mL, 0.305
mol), 4-dimethylaminopyridine (1.1 g, 9 mmol), and
tetrabutylammonium bromide (2.9 g, 9 mmol). The reaction was
stirred overnight at ambient temperature. The reaction was slowly
poured into 1N HCl (500 mL). The resulting precipitate was
filtered, washed with water, then hexanes. The solid was
recrystallized from methanol to give the pyran compound as a white
solid (62.8 g, 79%). MS (ES+) M+NH.sub.4.sup.+ calculated for
C.sub.20H.sub.19O.sub.56S.sub.1F.sub.3: 462.12, found 462.12.
[1174] Part G: In dry equipment under nitrogen, the pyran compound
from part F (64.0 g, 0.144 mol) was dissolved in dry
tetrahydrofuran (250 mL) and a solution of potassium
trimethylsilonate (55.9 g, 0.432 mol) in dry tetrahydrofuran (40
mL) was added at ambient temperature. After two hours, water (200
mL) was added and the solution concentrated in vacuo. The slurry
was extracted with ethyl acetate to remove unreacted starting
material. The aqueous solution was treated with 6N HCl until pH=1.
The slurry was extracted with ethyl acetate and the combined
extracts washed with water, brine, dried over Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. The residue was heated in
diethyl ether, the resulting solid filtered and dried to give the
carboxylic acid as a white solid (56.3 g, 91%). HRMS (ES+)
M+NH.sub.4.sup.+ calculated for
C.sub.19H.sub.17O.sub.6S.sub.1F.sub.3: 448.10, found 448.10.
[1175] Part H: In dry equipment under nitrogen, the carboxylic acid
from part G (49.0 g, 0.114 mol) was dissolved in dry
dimethylformamide (280 mL) and the remaining reagents were added to
the solution in the following order: N-hydroxybenzotriazole hydrate
(18.5 g, 0.137 mol), N-methylmorpholine (37.5 mL, 0.342 mol),
O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (41.3 g, 0.353 mol), and
1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride 30.6 g,
0.160 mol). After four hours at ambient temperature, the reaction
was concentrated in vacuo. The residue was taken up in ethyl
acetate, washed with water, 5% KHSO.sub.4, saturated NaHCO.sub.3,
brine, dried over Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo to give the THP hydroxamate as a white foam (62.6 g, 100%).
HRMS (ES+) M+NH.sub.4.sup.+ calculated for
C.sub.24H.sub.26NO.sub.7S.sub.1F.sub.3: 547.17, found 547.17.
[1176] Part I: To a solution of the THP hydroxamate from part H
(58.5 g, 0.11 mol) in 1,4-dioxane (280 mL) was added 4N HCl dioxane
solution (280 mL) and methanol (280 mL). After fifteen minutes at
ambient temperature, the reaction was diluted with ethyl acetate
and washed with water, dried over Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The product was recrystallized
(acetone/hexanes) to give the title compound as a white solid
(42.79 g, 87%) HRMS (ES+) M+NH.sub.4.sup.+ calculated for
C.sub.19H.sub.18NO.sub.6S.sub.1F.sub.3: 463, found 463.
EXAMPLE 380
Preparation of 4-[[4-([1,1'-biphenyl]-4-yloxy]phenyl)
sulfonyl]tetrahydro-N-hydroxy-2H-pyran-4-carboxamide
[1177] ##STR3809##
[1178] Part A: To a solution of the product of Example 55 (2.0 g,
5.2 mmol) in dimethylacetamide (8 mL) was added 4-phenylphenol
(Aldrich, 1.3 g, 7.8 mmol) followed by cesium carbonate (6.8 g,
20.8 mmol). The reaction was heated at ninety-five degrees Celsius
for five hours. Stripping the dimethylacetamide in vacuo afforded a
brown solid (5.3 g, quantitative). Chromatography (reverse phase,
C-18, acetonitrile/water) gave the THP-protected biphenyl product
in solution.
[1179] Part B: To the collected THP-protected diphenyl product from
A in acetonitrile/water (50 mL) was slowly added 10% HCl.sub.aq
(100 mL). After stirring overnight (about eithteen hours), the
acetonitrile was stripped. The resultant precipitate was collected,
giving the title compound as a white solid (2.0 g, 83%). MS (FAB)
M.sup.+H calculated for C.sub.24H.sub.23NO.sub.6S: 454, found
454.
EXAMPLE 381
Preparation of
tetrahydro-N-hydroxy-4-[[4-[[4-(trifluoromethyl)phenyl]thio]phenyl]-sulfo-
nyl]-2H-pyran-4-carboxamide
[1180] ##STR3810##
[1181] Part A: To a solution of the product of Example 55 (2.0 g,
5.2 mmol) in dimethylacetamide (6 mL) was added
4-trifluoromethylthiophenol (Maybridge, 2.0 g, 11.2 mmol), followed
by potassium carbonate (2.9 g, 20.8 mmol). The reaction was heated
at sixty-five degrees Celsius for twelve hours. Stripping the
dimethylacetamide in vacuo afforded a brown solid (6.5 g,
quantitative). Chromatography (reverse phase, C-18,
acetonitrile/water) gave the THP-protected trifluoromethyl product
in solution.
[1182] Part B: To the solution of the crude THP-protected
trifluoromethyl product from in acetonitrile/water (40 mL) was
slowly added 10% HCl.sub.aq (100 mL). After stirring overnight
(about eighteen hours), the acetonitrile was stripped. The
resultant precipitate was collected, giving the title compound as a
tan solid (0.75 g, 31%). MS (FAB) M.sup.+H calculated for
C.sub.19H.sub.18F.sub.3NO.sub.5S.sub.2: 462, found 462.
EXAMPLE 382
Preparation of
Tetrahydro-N-hydroxy-4-[[4-[4-[(trifluoromethyl)thio]phenoxy]phenyl]-sulf-
onyl]-2H-pyran-4-carboxamide
[1183] ##STR3811##
[1184] Part A: To a solution of the product of Example 55 (2.0 g,
5.2 mmol) in dimethylacetamide (6 mL) was added
4-(trifluoromethylthio)thiophenol (Aldrich, 1.5 g, 7.8 mmol)
followed by cesium carbonate (6.8 g, 20.8 mmol). After adding a
catalytic amount of potassium fluoride, the reaction was heated at
ninety-five degrees Celsius for twelve hours. Stripping the
dimethylacetamide in vacuo afforded a brown solid (7.2 g,
quantitative). Chromatography (reverse phase, C-18,
acetonitrile/water) gave the THP-protected trifluoromethylthio
product in solution.
[1185] Part B: To the solution of the crude THP-protected
trifluoromethylthio product from A in acetonitrile/water (40 mL)
was slowly added 10% HCl.sub.aq (100 mL). After stirring overnight
(about eighteen hours), the acetonitrile was stripped. The
resultant precipitate was collected, giving the title compound as a
tan solid (0.60 g, 24%). MS (FAB) M.sup.-H calculated for
C.sub.19H.sub.18F.sub.3NO.sub.6S.sub.2: 476, found 476.
EXAMPLE 380
Preparation of
4-[[4-[4-chloro-3-(trifluoro-methyl)phenoxy]phenyl]sulfonyl]-tetrahydro-N-
-hydroxy-2H-pyran-4-carboxamide
[1186] ##STR3812##
[1187] Part A: To a solution of the product of Example 55 (2.0 g,
5.2 mmol) in dimethylacetamide (6 mL) was added
4-chloro-3-trifluoromethylphenol (Avocado, 1.5 g, 7.8 mmol)
followed by cesium carbonate (6.8 g, 20.8 mmol). The reaction was
heated at ninety-five degrees Celsius for twelve hours. Stripping
the dimethylacetamide in vacuo afforded a brown solid (7.6 g,
quantitative). Chromatography (reverse phase, C-18,
acetonitrile/water) gave the THP-protected product in solution.
[1188] Part B: To the solution of the crude THP-protected product
from in acetonitrile/water (40 mL) was slowly added 10% HCl.sub.aq
(100 mL). After stirring overnight (about eighteen hours), the
acetonitrile was stripped. The resultant precipitate was collected,
giving the title compound as a white solid (0.92 g, 37%). MS (FAB)
M+H calculated for C.sub.19H.sub.17ClF.sub.3NO.sub.6S: 480, found
480.
EXAMPLE 384
Preparation of
4-[[4-[4-(1,1-dimethylethyl)-phenoxy]phenyl]sulfonyl]tetrahydro-N-hydroxy-
-2H-pyran-4-carboxamide
[1189] ##STR3813##
[1190] Part A: To a solution of the product of Example 55 (5.0 g,
12.9 mmol) in dimethylacetamide (25 mL) was added 4-t-butylphenol
(Avocado, 2.9 g, 19.4 mmol) followed by cesium carbonate (20.4 g,
20.862.5 mmol). The reaction was heated at ninety-five degrees
Celsius for twelve hours. Stripping the dimethylacetamide in vacuo
afforded a brown solid (9.4 g, quantitative). Chromatography
(reverse phase, C-18, acetonitrile/water) gave the THP-protected
product in solution.
[1191] Part B: To the solution of the crude THP-protected product
from in acetonitrile/water (60 mL) was slowly added 10% HCl.sub.aq
(100 mL). After stirring overnight (about eighteen hours), the
acetonitrile was stripped. The resultant precipitate was collected,
giving the title compound as a white solid (0.28 g, 5%). MS (FAB)
M.sup.+H calculated for C.sub.22H.sub.27NO.sub.6S: 434, found
434.
EXAMPLE 385
Preparation of
4-[[4-[3,5-bis(trifluoromethyl)phenoxy]phenyl]sulfonyl]tetrahydro-N-hydro-
xy-2H-pyran-4-carboxamide
[1192] ##STR3814##
[1193] Part A: To a solution of the product of Example 55 (3.0 g,
7.7 mmol) in dimethylacetamide (15 mL) was added
3,5-ditrifluoromethylphenol (2.9 g, 19.4 mmol) followed by cesium
carbonate (20.4 g, 20.862.5 mmol). The reaction was heated at
ninety-five degrees Celsius for twelve hours. Stripping the
dimethylacetamide in vacuo afforded a brown solid (14.7 g,
quantitative). Chromatography (reverse phase, C-18,
acetonitrile/water) gave the THP-protected product in solution.
[1194] Part B: To the solution of the crude THP-protected product
from in acetonitrile water (60 mL) was slowly added 10% HCl.sub.aq
(100 mL). After stirring overnight (about eighteen hours), the
acetonitrile was stripped. The resultant precipitate was collected,
giving the title compound as a white solid (1.2 g, 31%). MS (FAB)
M.sup.+H calculated for C.sub.20H.sub.17F.sub.6NO.sub.6S: 514,
found 514.
EXAMPLE 386
Preparation of
tetrahydro-N-hydroxy-4-[[4-[3-methyl-4-(1-methylethyl)
phenoxy]phenyl]-sulfonyl]-2H-pyran-4-carboxamide
[1195] ##STR3815##
[1196] Part A: To a solution of the product of Example 55 (4.0 g,
10.3 mmol) in dimethylacetamide lb (20 mL) was added
4-isopropyl-3-methylphenol (Aldrich, 2.3 g, 15.5 mmol) followed by
cesium carbonate (16.8 g, 51.5 mmol). The reaction was heated at
ninety-five degrees Celsius for twelve hours. Stripping the
dimethylacetamide in vacuo afforded a brown solid (18.3 g,
quantitative). Chromatography (reverse phase, C-18,
acetonitrile/water) gave the THP-protected product in solution.
[1197] Part B: To the solution of the crude THP-protected product
from A in acetonitrile/water (40 mL) was slowly added 10%
HCl.sub.aq (100 mL). After stirring overnight (about eighteen
hours), the acetonitrile was stripped. The resultant precipitate
was collected, giving the title compound as a tan solid (1.8 g,
40%). MS (FAB) M.sup.-H calculated for
C.sub.22H.sub.27F.sub.3NO.sub.6S: 432, found 432.
EXAMPLE 387
Preparation of
Tetrahydro-N-hydroxy-4-[[4-[(2,2,3,3-tetrafluoro-2,3-dihydro-1,4-benzodio-
xin-6-yl]oxy]phenyl]sulfonyl]-2H-pyran-4-carboxamide
[1198] ##STR3816##
[1199] Part A: To a solution of the product of Example 55 (5.0 g,
12.9 mmol) in dimethylacetamide (25 mL) was added
2,2,3,3-tetrafluoro-6-hydroxybenzodioxene (Oakwood, 4.3 g, 19.4
mmol) followed by cesium carbonate (21.0 g, 64.5 mmol). The
reaction was heated at ninety-five degrees Celsius for five hours.
Stripping the dimethylacetamide in vacuo afforded a brown solid
(11.3 g, quantitative) Chromatography (reverse phase, C-18,
acetonitrile/water) gave the THP-protected product in solution.
[1200] Part B: To the collected THP-protected product from A in
acetonitrile/water (50 mL) was slowly added 10% HCl.sub.aq (100
mL). After stirring overnight (about eighteen hours), the
acetonitrile was stripped. The resultant precipitate was collected,
giving the title compound as a white solid (3.5 g, 54%). MS (FAB)
M.sup.-H calculated for C.sub.20H.sub.17F.sub.4NO.sub.8S: 506,
found 506.
EXAMPLE 388
Preparation of
N-hydroxy-1-[2-(4-morpholinyl)-ethyl]-4-[(4-(4-(trifluoromethyl)phenoxy]--
phenyl]sulfonyl]-4-piperidinecarboxamide, dihydrochloride
[1201] ##STR3817##
[1202] Part A: To a suspension of 4-bromopiperidine hydrobromide
(107.0 g, 0.436 mol) in tetrahydrofuran (1 L) was slowly added
triethylamine (122 mL, 0.872 mol) followed by di-tert-butyl
dicarbonate (100 g, 0.458 mol), which was added in several
portions. The resulting mixture was stirred at ambient temperature
for 22 hours then filtered and concentrated in vacuo. The solids
were washed with hexanes and then collected by filtration to give
the Boc-piperidine compound as an amber oil (124 g, >100%).
[1203] Part B: To a solution of 4-fluorophenol (50.0 g, 0.390 mol)
in acetone (400 mL), degassed with N.sub.2, was added
Cs.sub.2CO.sub.3 (159 g, 0.488 mol). After degassing the resulting
mixture with N.sub.2 for 5 minutes, the Boc-piperidine compound of
part A (85.9 g, 0.325 mol) was added. The resulting mixture was
stirred at ambient temperature for 18 hours and then filtered
through a pad of Celitee, washing with acetone. The filtrate was
concentrated in vacuo to provide the sulfide as a tan residue (98.5
g, 97%).
[1204] Part C: To a solution of the sulfide of part B (8.00 g, 25.7
mmol) in dichloromethane (90 mL) and methanol (15 mL) was added
monoperoxyphthalic acid magnesium salt hexahydrate (19.1 g, 38.6
mmol) in two portions. The resulting mixture was stirred at ambient
temperature for 1.5 hours and then filtered. The filtrate was
washed with saturated NaHCO.sub.3 and then with saturated NaCl. The
combined aqueous layers were extracted with dichloromethane (100
mL). The combined organic layers were dried over Na.sub.2SO.sub.4
and then concentrated in vacuo. The resulting solids were washed
with hexanes then dissolved in dichloromethane and filtered through
a pad of Celite.RTM., washing with dichloromethane. The filtrate
was concentrated in vacuo and recrystallization from ethyl acetate
provided the sulfone as a white crystalline solid (4.45 g,
50%).
[1205] Part D: To a solution of sulfone of part C (7.00 g, 20.4
mmol) in N,N-dimethylformamide (40 mL) was added Cs.sub.2CO.sub.3
(19.9 g, 61.2 mmol) and .alpha.,.alpha.,.alpha.-trifluoro-p-cresol
(3.97 g, 24.5 mmol). The resulting mixture was heated at eighty
degrees Celsius for 16 hours. After cooling to ambient temperature
the reaction mixture was concentrated in vacuo. The resulting
residue was treated with H.sub.2O and the solids were collected by
filtration. The solids were then washed with hexanes then methanol
to provide the biaryl ether as a tan solid (8.60 g, 87%).
[1206] Part E: To a solution of the biaryl ether of part D (8.59 g,
17.7 mmol) in tetrahydrofuran (100 mL), cooled to zero degrees
Celsius, was slowly added lithium bis(trimethylsilyl)amide (22.0
mL, 1.0M in tetrahydrofuran, 22.0 mmol), at such a rate that the
temperature of the reaction never exceeded one degree Celsius. The
resulting mixture was stirred at zero degrees Celsius for 1 hour
then a solution of methyl chloroformate (2.05 mL, 26.6 mmol) in
tetrahydrofuran (5.0 mL) was slowly added, at such a rate that the
temperature of the reaction mixture never exceeded four degrees
Celsius. After the addition was complete, the mixture was slowly
permitted to warm to ambient temperature. Saturated NH.sub.4Cl (50
mL) was added and the tetrahydrofuran was removed in vacuo. Water
(50 mL) was added to the residue which was then extracted with
ethyl acetate. The combined organic layers were washed with
saturated NaCl and dried over Na.sub.2SO.sub.4. Recrystallization
from methanol provided the methyl ester as a pale yellow
crystalline solid (7.66 g, 80%).
[1207] Part F: To a solution of the methyl ester of part E (7.66 g,
14.1 mmol) in dioxane (30 mL) and methanol (10 mL) was added a
solution of 4N HCl in dioxane (10 mL, 40 mmol). After stirring at
ambient temperature for 2 hours additional 4N HCl in dioxane (10
mL, 40 mmol) was added. After stirring at ambient temperature for
2.5 hours, the reaction mixture was concentrated in vacuo to
provide the amine as an off-white solid (6.80 g, >100%).
[1208] Part G: To a suspension of the amine of part F (3.00 g, 6.25
mmol) in acetonitrile (20 mL) was added K.sub.2CO.sub.3 (3.46 g,
25.0 mmol), 4-(2-chloroethyl)morpholine hydrochloride (1.22 g, 6.56
mmol) and a catalytic amount of NaI. The resulting mixture was
heated at reflux for 22 hours. After cooling to ambient
temperature, the reaction mixture was filtered through a pad of
Celite.RTM., washing with ethyl acetate. The filtrate was
concentrated in vacuo to provide the morpholinyl ethyl amine as a
tan solid (3.45 g, >100%).
[1209] Part H: To a solution of the morpholinyl ethyl amine of part
G (3.45 g, 6.25 mmol) in tetrahydrofuran (60 mL) was added
potassium trimethylsilanolate (1.60 g, 12.50 mmol). After stirring
at ambient temperature for 25 hours, H.sub.2O was added. The
reaction mixture was then neutralized (pH 7) with 1N HCl. The
tetrahydrofuran was removed in vacuo and the resulting precipitate
was collected by filtration and washed with diethyl ether to
provide the amino acid as an off-white solid (2.87 g, 85%).
[1210] Part I: To a suspension of the amino acid of part H (2.87 g,
5.29 mmol) in dichloromethane (25 mL) was added N-methylmorpholine
(1.74 mL, 15.9 mmol), O-(tetrahydropuranyl)hydroxylamine (0.682 g,
5.82 mmol) and PyBroP.RTM. (2.96 g, 6.35 mmol). After stirring at
ambient temperature for 19 hours additional N-methylmorpholine
(0.872 mL, 7.94 mmol), O-(tetrahydropuranyl)hydroxylamine (0.310 g,
2.65 mmol) and PyBroP.RTM. (1.48 g, 3.17 mmol) were added. The
resulting mixture was stirred at ambient temperature for 3 hours
and then concentrated in vacuo. The residue was partitioned between
ethyl acetate and H.sub.2O. The organic layers were washed with
saturated NaCl and dried over Na.sub.2SO.sub.4. Chromatography (on
silica, methanol/chloroform) provided the protected hydroxamate as
an off-white solid (2.62 g, 77%).
[1211] Part J: To a solution of the protected hydroxamate of part I
(2.62 g, 4.08 mmol) in dioxane (9 mL) and methanol (3 mL) was added
a solution of 4N HCl in dioxane (10 mL, 40.0 mmol). The resulting
mixture was stirred at ambient temperature for 2 hours and then
diethyl ether (20 mL) was added. The resulting solids were
collected by filtration to give the title compound as an off-white
solid (2.31 g, 90%). MS MH.sup.+ calculated for
C.sub.25H.sub.31O.sub.6N.sub.3SF.sub.3: 558, found 558.
EXAMPLE 389
Preparation of
N-hydroxy-1-(4-pyridinylmethyl)-4-[[4-(4-(trifluoromethyl)phenoxy]phenyl]-
-sulfonyl]-4-piperidinecarboxamide, dihydrochloride
[1212] ##STR3818##
[1213] Part A: To a suspension of the amine of part F, Example 388
(1.50 g, 3.13 mmol) in acetonitrile (10 mL) were added
K.sub.2CO.sub.3 (1.73 g, 12.5 mmol) and 4-picolyl chloride
hydrochloride (0.565 g, 3.44 mmol). After stirring at reflux for
21.5 hours, the reaction mixture was filtered through a pad of
Celite.RTM., washing with ethyl acetate. The filtrate was
concentrated in vacuo. Chromatography (on silica, ethyl
acetate/hexanes) provided the picolyl amine as a clear gum (1.44 g,
86%).
[1214] Part B: To a solution of the picolyl amine of part A (1.44
g, 2.69 mmol) in tetrahydrofuran (20 mL) was added potassium
trimethylsilanolate (0.690 g, 5.38 mmol). The resulting mixture was
stirred at ambient temperature for 20 hours and then the
tetrahydrofuran was removed by blowing N.sub.2 over the reaction
mixture. Water (8 mL) was added and the reaction mixture was
neutralized (pH 7) with 2N HCl. The resulting precipitate was
collected by filtration to provide the amino acid as a white solid
(1.31 g, 94%).
[1215] Part C: To a suspension of the amino acid of part B (1.31 g,
2.52 mmol) in N,N-dimethylformamide (10 mL) was added
1-hydroxybenzotriazole (0.408 g, 3.02 mmol), N-methylmorpholine
(0.831 mL, 7.56 mmol), O-(tetrahydropuranyl)hydroxylamine (0.443 g,
3.78 mmol) and 1-3-[(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.676 g, 3.53 mmol). The resulting mixture was
stirred at ambient temperature for 3 days then concentrated in
vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The combined organic layers were washed with saturated
NaHCO.sub.3, saturated NaCl and dried over Na.sub.2SO.sub.4.
Chromatography (on silica, ethyl acetae/hexanes) provided the
protected hydroxamate as a white foam (1.24 g, 79%).
[1216] Part D: To a solution of the protected hydroxamate of part C
(1.24 g, 2.00 mmol) in dioxane (6 mL) and methanol (2 mL) was added
a solution of 4N HCl in dioxane (5.00 mL, 20.0 mmol). After
stirring at ambient temperature for 2.5 hours the reaction mixture
was concentrated in vacuo. The resulting foam was then treated
again with a solution of 4N HCl in dioxane (3 mL) for 15 minutes
then diethyl ether was added and the resulting precipitate was
collected by filtration to provide the title compound as an
off-white solid (1.04 g, 85%). MS MH.sup.+ calculated for
C.sub.25H.sub.25O.sub.5N.sub.3SF.sub.3: 536, found 536.
EXAMPLE 390
Preparation of
N-hydroxy-1-(3-pyridinylmethyl)-4-[[4-(4-trifluoromethyl)phenoxy]phenyl]--
sulfonyl]-4-piperidinecarboxamide, dihydrochloride
[1217] ##STR3819##
[1218] Part A: To a suspension of the amine of part F, Example 388
(1.00 g, 2.08 mmol) in acetonitrile (10 mL) was added
K.sub.2CO.sub.3 (1.15 g, 8.33 mmol) and 3-picolyl chloride
hydrochloride (0.375 g, 2.29 mmol). After stirring at reflux for 12
hours, the reaction mixture was filtered through a pad of
Celite.RTM., washing with ethyl acetate. The filtrate was
concentrated in vacuo. Chromatography (on silica, ethyl
acetate/hexanes) provided the picolyl amine as a pale yellow foam
(0.740 g, 67%).
[1219] Part B: To a solution of the picolyl amine of part A (0.740
g, 1.38 mmol) in tetrahydrofuran (10 mL) was added potassium
trimethylsilanolate (0.355 g, 2.77 mmol). The resulting mixture was
stirred at ambient temperature for 17 hours, then additional
potassium trimethylsilanolate (0.044 g, 0.343 mmol) was added and
the resulting mixture was stirred at ambient temperature for 2
hours. The tetrahydrofuran was removed by blowing N.sub.2 over the
reaction mixture. Water (5 mL) was added and the reaction mixture
was neutralized (pH 7) with 2N HCl. The resulting precipitate was
collected by filtration and dried by concentration in vacuo with
acetone to provide the amino acid as an off-white solid (0.700 g,
97%).
[1220] Part C: To a suspension of the amino acid of part B (0.700
g, 1.34 mmol) in N,N-dimethylformamide (10 mL) was added
1-hydroxybenzotriazole (0.218 g, 1.61 mmol), N-methylmorpholine
(0.442 mL, 4.02 mmol), O-(tetrahydropuranyl)hydroxylamine (0.235 g,
2.01 mmol) and 1-3-[(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.360 g, 1.88 mmol). The resulting mixture was
stirred at ambient temperature for 23 hours, then concentrated in
vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The combined organic layers were washed with H.sub.2O,
saturated NaHCO.sub.3, saturated NaCl and dried over
Na.sub.2SO.sub.4. Chromatography (on silica, ethyl acetae/hexanes)
provided the protected hydroxamate as an off-white foam (0.500 g,
60%).
[1221] Part D: To a solution of the protected hydroxamate of part C
(0.500 g, 0.807 mmol) in dioxane (1.5 mL) and methanol (0.5 mL) was
added a solution of 4N HCl in dioxane (3.0 mL, 12.00 mmol). After
stirring at ambient temperature for 2 hours, diethyl ether was
added and the resulting precipitate was collected by filtration to
provide the title compound as a yellow solid (0.363 g, 74%). MS
MH.sup.+ calculated for C.sub.2H.sub.25O.sub.5N.sub.3SF.sub.3: 536,
found 536.
EXAMPLE 391
Preparation of
N-hydroxy-1-(2-pyridinylmethyl)-4-[[4-[4-(trifluoromethyl)phenoxy]phenyl]-
-sulfonyl]-4-piperidinecarboxamide, dihydrochloride
[1222] ##STR3820##
[1223] Part A: To a suspension of the amine of part F, Example 388
(1.26 g, 2.63 mmol) in acetonitrile (10 mL) was added
K.sub.2CO.sub.3 (1.45 g, 10.5 mmol) and 2-picolyl chloride
hydrochloride (0.475 g, 2.89 mmol). After stirring at reflux for 12
hours, the reaction mixture was filtered through a pad of
Celite.RTM., washing with ethyl acetate. The filtrate was
concentrated in vacuo. Chromatography (on silica, ethyl
acetate/hexanes) provided the picolyl amine as an amber oil (1.40
g, 99%).
[1224] Part B: To a solution of the picolyl amine of part A (1.40
g, 2.62 mmol) in tetrahydrofuran (20 mL) was added potassium
trimethylsilanolate (0.672 g, 5.24 mmol). The resulting mixture was
stirred at ambient temperature for 15 hours. The tetrahydrofuran
was removed by blowing N.sub.2 over the reaction mixture. H.sub.2O
(5 mL) was added and the reaction mixture was neutralized (pH 7)
with 2N HCl. The resulting precipitate was collected by filtration
and dried by concentration in vacuo with acetonitrile to provide
the amino acid as an off-white solid (1.07 g, 79%).
[1225] Part C: To a suspension of the amino acid of part B (1.07 g,
2.06 mmol) in N,N-dimethylformamide (10 mL) was added
1-hydroxybenzotriazole (0.333 g, 2.47 mmol), N-methylmorpholine
(0.679 mL, 6.18 mmol), O-(tetrahydropuranyl)hydroxylamine (0.362 g,
3.09 mmol) and 1-3-[(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.553 g, 2.88 mmol). The resulting mixture was
stirred at ambient temperature for 19 hours, then concentrated in
vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The combined organic layers were washed with H.sub.2O,
saturated NaHCO.sub.3, saturated NaCl and dried over
Na.sub.2SO.sub.4. Chromatography (on silica,
methanol/dichloromethane) provided the protected hydroxamate as a
white solid (1.03 g, 81%).
[1226] Part D: To a solution of the protected hydroxamate of part C
(1.03 g, 1.66 mmol) in dioxane (3.0 mL) and methanol (1.0 mL) was
added a solution of 4N HCl in dioxane (3.0 mL, 12.00 mmol). After
stirring at ambient temperature for 1.5 hours, diethyl ether was
added and the resulting precipitate was collected by filtration to
provide the title compound as a pale pink solid (0.970 g, 96%). MS
MH.sup.+ calculated for C.sub.25H.sub.25O.sub.5N.sub.3SF.sub.3:
536, found 536.
EXAMPLE 392
Preparation of
N-hydroxy-4-[[4-[(4-methoxyphenyl)amino]phenyl]sulfonyl]-4-piperidinecarb-
oxamide, monohydrochloride
[1227] ##STR3821##
[1228] Part A: To the ester of part C, Example 91 (1.00 g, 2.17
mmol) was added Cs.sub.2CO.sub.3 (0.990 g, 3.04 mmol), BINAP (0.061
g, 0.098 mmol), tris(dibenzyldeneacetone)dipallidium (0) (0.060 g,
0.07 mmol), p-anisidine (0.320 g, 2.60 mmol) and toluene (4 mL).
The resulting mixture was heated to one hundred degrees Celsius for
22 hours. After cooling to ambient temperature, diethyl ether was
added and the mixture was filtered through a pad of Celite.RTM.,
washing with ethyl acetate. The filtrate was concentrated in vacuo.
Chromatography (on silica, ethyl acetate/hexane) provided the
aniline as an orange foam (0.810 g, 74%).
[1229] Part B: To a solution of the aniline of part A (0.780 g,
1.55 mmol) in tetrahydrofuran (4.0 mL) was added potassium
trimethylsilanolate (0.238 g, 1.86 mmol). The resulting mixture was
stirred at ambient temperature for 17 hours, and then additional
potassium trimethylsilanolate (0.020 g, 0.1955 mmol) was added.
After stirring at ambient temperature for 24 hours additional
potassium trimethylsilanolate (0.040 g, 0.310 mmol) was added.
After stirring at ambient temperature for 26 hours, the solvent was
removed by blowing N.sub.2 over the mixture. To a suspension of the
residue in dichloromethane (10 mL) was added added
N-methylmorpholine (0.511 mL, 4.65 mmol),
O-(tetrahydropuranyl)hydroxylamine (0.218 g, 1.86 mmol), followed
by PyBroP.RTM. (1.08 g, 2.33 mmol). The resulting mixture was
stirred at ambient temperature for 2 days and then concentrated in
vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The combined organic layers were washed with saturated
NaCl and dried over Na.sub.2SO.sub.4. Chromatography (on silica,
ethyl acetate/hexane) provided the protected hydroxamate as an
off-white solid (0.600 g, 66%).
[1230] Part C: To a solution of the protected hydroxamate of part B
(0.580 g, 0.984 mmol) in dioxane (3 mL) and methanol (1 mL) was
added a solution of 4N HCl in dioxane (2.5 mL, 10.0 mmol). The
resulting mixture was stirred at ambient temperature for 1 hour,
then diethyl ether (10 mL) was added. The solids were collected by
filtration to give the title compound as a white solid (0.437 g,
100%). MS MH+ calculated for C.sub.19H.sub.24O.sub.5N.sub.3S: 406,
found 406.
EXAMPLE 393
Preparation of
N-hydroxy-4-[[4-[[4-(trifluoromethoxy)phenyl]amino]phenyl]-sulfonyl]-4-pi-
peridinecarboxamide, monohydrochloride
[1231] ##STR3822##
[1232] Part A: To a solution of the ester of part C, Example 91
(3.27 g, 7.09 mmol) was added Cs.sub.2CO.sub.3 (3.23 g, 9.92 mmol),
BINAP (0.066 g, 0.107 mmol), tris(dibenzyldeneacetone)-dipallidium
(O) (0.065 g, 0.071 mmol), 4-trifluoro-methoxyaniline (1.15 mL,
8.51 mmol) and toluene (14 mL). The resulting mixture was heated to
one hundred degrees Celsius for 22 hours. After cooling to ambient
temperature, the mixture was filtered through a pad of Celite.RTM.,
washing with ethyl acetate, and the filtrate was concentrated in
vacuo. Chromatography (on silica, ethyl acetate/hexane) provided
the aniline as a tan solid (3.59 g, 91%).
[1233] Part B: To a solution of the aniline of part A (1.03 g, 1.84
mmol) in tetrahydrofuran (10 mL) was added potassium
trimethylsilanolate (0.331 g, 2.58 mmol). The resulting mixture was
stirred at ambient temperature for 24 hours, and then additional
potassium trimethylsilanolate (0.118 g, 0.092 mmol) was added.
After stirring at ambient temperature for 24 hours, the solvent was
removed by blowing N.sub.2 over the mixture. H.sub.2O was added and
the reaction mixture was acidified (pH 3) with 1N HCl. The aqueous
reaction mixture was extracted with ethyl acetate and the combined
organic layers were washed with saturated NaCl and dried over
Na.sub.2SO.sub.4. Concentration in vacuo provided the acid as a tan
solid (1.01 g, 100%).
[1234] Part C: To a suspension of the acid of part B (1.00 g, 1.84
mmol) in N,N-dimethylformamide (10 mL) was added
1-hydroxybenzotriazole (0.298 g, 2.21 mmol), N-methylmorpholine
(0.607 mL, 5.52 mmol), O-(tetrahydropuranyl)hydroxylamine (0.323 g,
2.76 mmol) and 1-3-[(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.494 g, 2.58 mmol). The resulting mixture was
stirred at ambient temperature for 17 hours then concentrated in
vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The combined organic layers were washed with H.sub.2O,
saturated NaHCO.sub.3, saturated NaCl and dried over
Na.sub.2SO.sub.4. Chromatography (on silica, ethyl acetate/hexanes)
provided the protected hydroxamate as a white solid (0.960 g,
81%).
[1235] Part D: To a solution of the protected hydroxamate of part C
(0.960 g, 1.49 mmol) in dioxane (3 mL) and methanol (1 mL) was
added a solution of 4N HCl in dioxane (4.0 mL, 16.0 mmol). The
resulting mixture was stirred at ambient temperature for 2.5 hours.
The solvent was then removed by blowing N.sub.2 over the reaction
mixture. Diethyl ether (20 mL) was added and the precipitate was
collected by filtration to give the title compound as a pale pink
solid (0.716 g, 100%). MS MH.sup.+ calculated for
C.sub.19H.sub.21O.sub.5N.sub.3SF.sub.3: 460, found 460.
EXAMPLE 394
Preparation of
N-hydroxy-1-(2-methoxyethyl)-4-[[4-[[4-(trifluoromethoxy)phenyl]amino]phe-
nyl]sulfonyl]-4-piperidinecarboxamide, monohydrochloride
[1236] ##STR3823##
[1237] Part A: To a solution of the aniline of part A, Example 392
(2.55 g, 4.57 mmol) in dioxane (9.0 mL) and methanol (3.0 mL) was
added a solution of 4N HCl in dioxane (10 mL, 40 mmol). After
stirring at ambient temperature for 2 hours, the reaction mixture
was concentrated in vacuo to provide the amine as a tan solid (2.36
g, >100%).
[1238] Part B: To a suspension of the amine of part A (1.50 g, 3.03
mmol) in acetonitrile (12 mL) was added K.sub.2CO.sub.3 (1.26 g,
9.09 mmol) and 2-bromoethyl methyl ether (0.313 mL, 3.33 mmol).
After stirring at reflux for 23 hours, Cs.sub.2CO.sub.3 (2.96 g,
9.09 mmol) was added. After 6 hours at reflux, the reaction mixture
was filtered through a pad of Celite.RTM., washing with
dichloromethane. The filtrate was concentrated in vacuo.
Chromatography (on silica, methanol/dichloromethane) provided the
methoxy ethyl amine as a tan solid (1.13 g, 72%).
[1239] Part C: To a solution of the methoxy ethyl amine of part B
(1.13 g, 2.19 mmol) in tetrahydrofuran (20 mL) was added potassium
trimethylsilanolate (0.561 g, 4.38 mmol). The resulting mixture was
stirred at ambient temperature for 18 hours, and then additional
potassium trimethylsilanolate (0.140 g, 1.09 mmol) was added. After
stirring at ambient temperature for 5 hours, the solvent was
removed by blowing N.sub.2 over the mixture. Water (8 mL) was added
and the reaction mixture was neutralized (pH 7) with 1N HCl. The
solids were collected by filtration and dried by concentration in
vacuo with acetonitrile to provide the amino acid as an off-white
solid (0.900 g, 82%).
[1240] Part D: To a suspension of the amino acid of part C (0.900
g, 1.79 mmol) in N,N-dimethylformamide (8.0 mL) was added
1-hydroxybenzotriazole (0.290 g, 2.15 mmol), N-methylmorpholine
(0.590 mL, 5.37 mmol), O-(tetrahydropuranyl)hydroxylamine (0.315 g,
2.69 mmol) and 1-3-[(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.480 g, 2.51 mmol). The resulting mixture was
stirred at ambient temperature for 16 hours then concentrated in
vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The combined organic layers were washed with H.sub.2O,
saturated NaHCO.sub.3, saturated NaCl and dried over
Na.sub.2SO.sub.4. Chromatography (on silica,
methanol/dichloromethane) provided the protected hydroxamate as an
off-white solid (0.870 g, 81%).
[1241] Part E: To a solution of the protected hydroxamate of part D
(0.870 g, 1.45 mmol) in dioxane (3 mL) and methanol (1 mL) was
added a solution of 4N HCl in dioxane (10 mL, 40.0 mmol). The
resulting mixture was stirred at ambient temperature for 2.0 hours.
The reaction mixture was concentrated in vacuo and then treated
again with 4N HCl (3 mL) for 30 minutes. The solvent was then
removed by blowing N.sub.2 over the reaction mixture. Diethyl ether
(30 mL) was added, and the precipitate was collected by filtration
to give the title compound as a pale pink solid (0.771 g, 96%). MS
MH.sup.+ calculated for C.sub.22H.sub.27O.sub.6N.sub.3SF.sub.3:
518, found 518.
EXAMPLE 395
Preparation of
N-hydroxy-4-[[4-[(4-(trifluoromethyl)phenyl]amino)phenyl]-sulfonyl]-4-pip-
eridinecarboxamide, monohydrochloride
[1242] ##STR3824##
[1243] Part A: To a solution of the ester of part C, Example 91
(3.16 g, 6.85 mmol) was added Cs.sub.2CO.sub.3 (3.13 g, 9.59 mmol),
BINAP (0.064 g, 0.103 mmol), tris(dibenzyldeneacetone)-dipallidium
(O) (0.063 g, 0.069 mmol),
.alpha.,.alpha.,.alpha.-trifluoro-methylaniline (1.03 mL, 8.22
mmol) and toluene (14 mL). The resulting mixture was heated to one
hundred degrees Celsius for 17 hours. After cooling to ambient
temperature, the mixture was filtered through a pad of Celite.RTM.,
washing with dichloromethane, and the filtrate was concentrated in
vacuo. Chromatography (on silica, ethyl acetate/hexane) provided
the aniline as a pale orange foam (3.08 g, 83%).
[1244] Part B: To a solution of the aniline of part A (1.00 g, 1.84
mmol) in tetrahydrofuran (10 mL) was added potassium
trimethylsilanolate (0.473 g, 3.69 mmol). The resulting mixture was
stirred at ambient temperature for 25 hours then the solvent was
removed by blowing N.sub.2 over the mixture. Water was added, and
the reaction mixture was acidified (pH 3) with 1N HCl. The aqueous
layer was extracted with ethyl acetate and the combined organic
layers were washed with saturated NaCl and dried over
Na.sub.2SO.sub.4. Concentration in vacuo provided the acid as an
orange foam (1.00 g, >100%).
[1245] Part C: To a suspension of the acid of part B (0.972 g, 1.84
mmol) in N,N-dimethylformamide (10 mL) was added
1-hydroxybenzotriazole (0.298 g, 2.21 mmol), N-methylmorpholine
(0.607 mL, 5.52 mmol), O-(tetrahydropuranyl)hydroxylamine (0.323 g,
2.76 mmol) and 1-3-[(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.494 g, 2.58 mmol). The resulting mixture was
stirred at ambient temperature for 18 hours, then concentrated in
vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The combined organic layers were washed with H.sub.2O,
saturated NaHCO.sub.3, saturated NaCl and dried over
Na.sub.2SO.sub.4. Chromatography (on silica, ethyl acetate/hexanes)
provided the protected hydroxamate as a white solid (0.970 g,
84%).
[1246] Part D: To a solution of the protected hydroxamate of part C
(0.950 g, 1.51 mmol) in dioxane (3 mL) and methanol (1 mL) was
added a solution of 4N HCl in dioxane (4.0 mL, 16.0 mmol). The
resulting mixture was stirred at ambient temperature for 1.5 hours.
Diethyl ether (20 mL) was added and the precipitate was collected
by filtration to give the title compound as a white solid (0.630 g,
87%). MS MH.sup.+ calculated for
C.sub.19H.sub.21O.sub.4N.sub.3SF.sub.3: 444, found 444.
EXAMPLE 396
Preparation of
N-hydroxy-1-(2-methoxyethyl)-4-[[4-[[4-(trifluoromethyl)phenyl]amino]phen-
yl]sulfonyl]-4-piperidinecarboxamide, monohydrochloride
[1247] ##STR3825##
[1248] Part A: To a solution of the aniline of part A, Example 395
(2.07 g, 3.82 mmol) in dioxane (9.0 mL) and methanol (3.0 mL) was
added a solution of 4N HCl in dioxane (10 mL, 40 mmol). After
stirring at ambient temperature for 2 hours, the reaction mixture
was concentrated in vacuo to provide the amine as a yellow solid
(1.89 g, >100%).
[1249] Part B: To a suspension of the amine of part A (1.83 g, 3.82
mmol) in acetonitrile (20 mL) was added K.sub.2CO.sub.3 (1.58 g,
11.46 mmol) and 2-bromoethyl methyl ether (0.395 mL, 4.20 mmol).
After stirring at reflux for 18 hours, the reaction mixture was
filtered through a pad of Celite.RTM., washing with dichloromethane
and the filtrate was concentrated in vacuo. Chromatography (on
silica, methanol/dichloromethane) provided the methoxy ethyl amine
as an off-white solid (1.58 g, 83%).
[1250] Part C: To a solution of the methoxy ethyl amine of part B
(1.58 g, 3.15 mmol) in tetrahydrofuran (30 mL) was added potassium
trimethylsilanolate (0.810 g, 6.31 mmol). The resulting mixture was
stirred at ambient temperature for 3 days, and then the solvent was
removed by blowing N.sub.2 over the mixture. Water (10 mL) was
added and the reaction mixture was neutralized (pH 7) with 1N HCl.
The solids were collected by filtration and dried by concentration
in vacuo with acetonitrile to provide the amino acid as a pink
solid (1.32 g, 86%).
[1251] Part D: To a suspension of the amino/acid of part C (1.32 g,
2.71 mmol) in N,N-dimethylformamide (12 mL) was added
1-hydroxybenzotriazole (0.439 g, 3.25 mmol), N-methylmorpholine
(0.894 mL, 8.13 mmol), O-(tetrahydropuranyl)hydroxylamine (0.476 g,
4.07 mmol) and 1-3-[(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.727 g, 3.79 mmol). The resulting mixture was
stirred at ambient temperature for 20 hours, then concentrated in
vacuo. The residue was partitioned between H.sub.2O and ethyl
acetate. The combined organic layers were washed with H.sub.2O,
saturated NaHCO.sub.3, saturated NaCl and dried over
Na.sub.2SO.sub.4. Chromatography (on silica, methanol/ethyl
acetate) provided the protected hydroxamate as an off-white solid
(1.39 g, 88%).
[1252] Part E: To a solution of the protected hydroxamate of part D
(1.40 g, 2.39 mmol) in dioxane (3 mL) and methanol (1 mL) was added
a solution of 4N HCl in dioxane (5.98 mL, 23.9 mmol). The resulting
mixture was stirred at ambient temperature for 2.5 hours. The
reaction mixture was concentrated almost to dryness, by blowing
N.sub.2 over the reaction mixture. Diethyl ether (25 mL) was added
and the precipitate was collected by filtration. The resulting
solid was dissolved in methanol (1 mL) and treated with 4N HCl in
dioxane (1.5 mL). After stirring at ambient temperature for 1.5
hours, the reaction mixture was slowly added to diethyl ether (50
mL). The resulting precipitate was collected by filtration to give
the title compound as an off-white solid (1.08 g, 84%). MS MH.sup.+
calculated for C.sub.22H.sub.27O.sub.5N.sub.3SF.sub.3: 502, found
502.
EXAMPLE 397
Preparation of ethyl
1-(2-methoxyethyl)-3-phenylpropoxy)phenyl]sulfonyl]-4-piperidinecarboxyla-
te
[1253] ##STR3826##
[1254] Part A: A mixture of the methoxyethyl amine,
ethyl-4-[(4-fluorophenylsulfonyl)]-1-[(2-methoxyethyl)-4-piperidinecarbox-
ylate (1.5 g, 4.0 mmol), 3-phenyl-1-propanol (2.2 mL, 16 mmol), and
K.sub.2CO.sub.3 (2.2 g, 16 mmol) in DMAC (6 mL) was heated at 125
degrees Celsius for 1 day and at 135 degrees Celsius for 3 days.
After the mixture was concentrated in vacuo, diluted with water,
and extracted with ethyl acetate. The organic layer was washed with
water and brine, dried over magnesium sulfate, and concentrated in
vacuo to give a crude oil. The oil was purified by flash
chromatography (20:80 hexane/ethyl acetate) to afford the ether as
a brown oil (1.35 g, 67%).
[1255] Part B: A mixture of the ether of part A (1.3 g, 2.7 mmol)
and a 50% NaOH aqueous solution (2.1 g, 27 mmol) in THF (23 mL),
EtOH (23 mL), and H.sub.2O (12 mL) was heated at 60 degrees Celsius
under a nitrogen atmosphere for 24 hours. The material was
concentrated in vacuo and triturated with diethyl ether to give a
solid. The solid was dissolved in water, cooled with an ice bath,
acidified with concentrated hydrochloric acid. The precipitate was
isolated by filtration, washed with cold water, and dried at
ambient temperature in a vacuum oven for 3 days to afford the crude
acid.
[1256] A mixture of the above crude acid (1.1 g),
N-hydroxybenzotriazole (0.36 g, 2.7 mmol), 4-methylmorpholine (0.74
mL, 6.7 mmol), O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.39 g,
3.3 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide
hydrochloride (0.60 g, 3.1 mmol) in DMF (11 mL) was stirred at
ambient temperature under a nitrogen atmosphere for 18 hours. The
mixture was concentrated in vacuo, and dissolved into a solution of
saturated NaHCO.sub.3 (90 mL), ethyl acetate (25 mL), and a few
drops of 2N NaOH. The aqueous layer was extracted with additional
ethyl acetate. The combined ethyl acetate layers were washed with
saturated NaHCO.sub.3 solution, water, and brine. After drying over
magnesium sulfate, the filtrate was concentrated in vacuo to give a
dark yellow oil. The oil was purified by flash chromatography
(40:60 acetonitrile/toluene) to afford the protected hydroxamate as
a yellow oil (0.32 g, 25%): MS MH+ calcd. for
C.sub.29H.sub.40N.sub.2O.sub.7S 561, found 561.
[1257] Part C: To a solution of the protected hydroxamate of part
2B (0.28 g, 0.50 mmol) in methanol (4.0 mL) was added acetyl
chloride (0.11 mL, 1.5 mmol) and the solution was stirred at
ambient temperature under a nitrogen atmosphere for 2.5 hours. The
solution was diluted with diethyl ether and concentrated. The solid
was triturated with diethyl ether and dried at 40 degrees Celsius
in a vacuum oven to give the title compound as an off white solid
(0.15 g, 20%): MS MH+ calcd. for C.sub.24H.sub.32N.sub.2O.sub.6S
477, found 477.
EXAMPLE 398
Preparation of
1-cyclopropyl-N-hydroxy-4-[[4-(2-phenoxyethoxy)phenyl]sulfonyl]-4-piperid-
inecarboxamide, monohydrochloride
[1258] ##STR3827##
[1259] Part A: To a solution of the product of Example 9, part E
(14.36 g, 40 mmol) in methanol (50 mL) was added acetic acid (24.5
g, 400 mmol), a portion (about 2 g) of 4-Angstrom molecular sieves,
(1-ethoxycyclopropyl)-oxytrimethyl silane (25.8 mL, 148 mmol) and
sodium cyanoborohydride (7.05 g, 112 mmol). The solution was heated
at reflux for 8 hours. The precipitated solids were removed by
filtration and the filtrate was concentrated in vacuo. The residue
was diluted with H.sub.2O (400 mL) and extracted with ethyl
acetate. The organic layer was washed with saturated NaCl and dried
over MgSO.sub.4, filtered and concentrated in vacuo. The solid was
filtered, washed with H.sub.2O/diethyl ether to give the desired
cyclopropyl amine
(ethyl-4-[(4-fluorophenyl-sulfonyl)]-1-cyclopropyl-4-piperidinecarboxylat-
e) as a white solid (11.83 g, 81.5%). MS MH.sup.+ calculated for
C.sub.17H.sub.22NO.sub.4SF: 356, found 356.
[1260] Part B: A solution of the cyclopropyl amine of Part A (2.0
g, 5.6 mmol), ethylene glycol phenyl ether (2.8 mL, 23 mmol), and
cesium carbonate (7.3 g, 23 mmol) in DMAC (10 mL) was heat at
125-135 degrees Celsius for 18 hours under an atmosphere of
nitrogen. The mixture was concentrated in vacuo, diluted with
water, and extracted with ethyl acetate. The combined ethyl acetate
layers were washed with water and brine, dried over magnesium
sulfate, concentrated in vacuo, dissolved in diethyl ether,
precipitated as the hydrochloride salt, and dried at 40 degrees
Celsius in a vacuum oven. The solid was dissolved into a mixture of
water, acetonitrile, and ethanol and then the pH was adjusted to 12
with 1N NaOH solution. The mixture was concentrated in vacuo to
remove ethanol and acetonitrile. The solid was isolated by
filtration, washed with water, and dried at 50 degrees Celsius in a
vacuum oven to afford the ether as a white solid (1.8 g, 68%):
MS+calcd. for C.sub.25H.sub.31NO.sub.6S 474, found 474. Anal.
calcd. for C.sub.25H.sub.31NO.sub.6S: C, 63.40; H, 6.60; N, 2.96;
S, 6.77. Found: C, 63.35; H, 6.59; N, 2.99; S, 6.61.
[1261] Part C: A mixture of the ether of part B (1.8 g, 3.7 mmol)
and a 50% NaOH aqueous solution (3.0 g, 37 mmol) in THF (32 mL),
EtOH (32 mL), and H.sub.2O (16 mL) was heated at 60 degrees Celsius
under a nitrogen atmosphere for 24 hours. The material was
concentrated in vacuo and triturated with diethyl ether to give a
solid. The tan solid was dissolved into a mixture of water,
ethanol, and THF, precipitated by adjusting the pH to 3 with
concentrated hydrochloric acid, concentrated in vacuo, triturated
with water, and dried at 50 degrees Celsius in a vacuum oven to
give a crude white solid acid (2.3 g).
[1262] A mixture of the crude white solid acid (2.3 g),
N-hydroxybenzotriazole (1.9 g, 14 mmol), 4-methylmorpholine (1.6
mL, 14 mmol), O-tetrahydro-2H-pyran-2-yl-hydroxylamine (1.1 g, 9.4
mmol), and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide
hydrochloride (2.7 g, 14 mmol) in DMF (90 mL) was stirred at
ambient temperature under a nitrogen atmosphere for 2 days. The
mixture was concentrated in vacuo, diluted with water, and
extracted with ethyl acetate. The organic layer was washed with 1N
NaOH solution, water, and brine, dried over magnesium sulfate,
concentrated in vacuo, and purification by flash chromatography
(20:80 to 40:60 ethyl acetate/toluene) to afford the protected
hydroxamate as a white solid: (0.43 g, 21%): MS MH+ calcd. for
C.sub.28H.sub.36N.sub.2O.sub.7S 545, found 545. Anal. calcd. for
C.sub.28H.sub.36N.sub.2O.sub.7S: C, 61.74; H, 6.66; N, 5.14; S,
5.89. Found: C, 61.72; H, 6.75; N, 5.06; S, 5.91.
[1263] Additional compound was isolated by acidifying the aqueous
layer to pH of 3, collecting the solid by filtration, and drying to
give a white solid (0.80 g).
[1264] Part D: To an ambient temperature solution of acetyl
chloride (0.31 mL, 4.4 mmol) in methanol (11 mL) under a nitrogen
atmosphere was added the protected hydroxamate of part C (0.80 g,
1.5 mmol). After stirring for 2.5 hours, the precipitate was
collected by filtration, washed with diethyl ether, and dried at 45
degrees Celsius in a vacuum oven to afford the title compound as a
white solid (0.58 g, 79%): MS MH+ calcd. for
C.sub.23H.sub.28N.sub.2O.sub.6S 461, found 461. Anal. calcd. for
C.sub.23H.sub.28N.sub.2O.sub.6S.1.5HCl: C, 53.62; H, 5.77; N, 5.44;
S, 6.22. Found: C, 53.47; H, 5.79; N, 5.41; S, 6.16.
EXAMPLE 399
Preparation of
hydroxy-1-(3-pyridinylmethyl)-4-[[4-[4-(trifluoromethoxy)phenoxy]phenyl]--
sulfonyl]-4-piperidinecarboxamide, dihydrochloride
[1265] ##STR3828##
[1266] Part A: A solution of the amine hydrochloride salt of the
product of Example 410 (2.4 g, 4.6 mmol), 3-picolyl chloride (1.5
g, 8.8 mmol), and potassium carbonate (4.3 g, 31 mmol) in DMF (12)
was heated at 50 degrees Celsius for 1 day under an atmosphere of
nitrogen. The mixture was concentrated in vacuo, dissolved into
water, and extracted with ethyl acetate. The organic layers were
washed with water and brine, dried over magnesium sulfate,
concentrated in vacuo. The residue was purified by flash
chromatography (50:50 ethyl acetate/hexane) to afford the 3-picolyl
amine as an amber oil (1.6 g, 60%): MS MH+ calcd. for
C.sub.27H.sub.27N.sub.2O.sub.6SF.sub.3 565, found 565. Anal. calcd.
for C.sub.27H.sub.27N.sub.2O.sub.6SF.sub.3: C, 57.44; H, 4.82; N,
4.96; S, 5.68. Found: C, 57.49; H, 5.10; N, 4.69; S, 5.67.
[1267] Part B: A mixture of the 3-picolyl amine of part 4A (1.5 g,
2.6 mmol) and a 50% NaOH aqueous solution (2.1 g, 26 mmol) in THF
(22 mL), EtOH (22 mL), and H.sub.2O (11 mL) was heated at 65
degrees Celsius under a nitrogen atmosphere for 24 hours. The
material was concentrated in vacuo and triturated with diethyl
ether to give a solid. The tan solid was dissolved into water and
the pH was adjusted to 1 with concentrated hydrochloric acid. The
mixture was concentrated in vacuo, and dried in a 45 degrees
Celsius vacuum oven to afford the crude white solid acid (2.5 g):
MS MH+ calcd. for C.sub.25H.sub.23N.sub.2O.sub.6SF.sub.3 537, found
537.
[1268] Part C: A mixture of the crude white acid of part B (2.5 g),
N-hydroxybenzotriazole (1.0 g, 7.7 mmol), 4-methylmorpholine (0.64
mL, 7.7 mmol), O-tetrahydro-2H-pyran-2-yl-hydroxylamine (0.60 g,
5.1 mmol), and 1-(3-dimethyl-aminopropyl)-3-ethylcarbodiimide
hydrochloride (1.5 g, 7.7 mmol) in DMF (40 mL) was stirred at
ambient temperature under a nitrogen atmosphere for 5 days. The
mixture was concentrated in vacuo, diluted with ethyl acetate, and
washed with water and brine. The organic layer was dried over
magnesium sulfate, concentrated in vacuo, and purified by flash
chromatography (5:95 methanol/chloroform) to afford the protected
hydroxamate as a white foam (1.1 g, 66%): MS MH+ calcd. for
C.sub.30H.sub.32N.sub.3O.sub.7SF.sub.3 636, found 636.
[1269] Part D: An ambient temperature solution of the protected
hydroxamate of part C (1.0 g, 1.6 mmol) and acetyl chloride (0.34
mL, 4.7 mmol) in methanol (11 mL) under a nitrogen atmosphere was
stirring for 2.5 hours, and then poured into diethyl ether. The
solid was isolated by filtration and dried at 46 degrees Celsius in
a vacuum oven to afford the title compound as a white solid (0.85
g, 87%): Anal. calcd. for
C.sub.25H.sub.24N.sub.3O.sub.6SF.sub.3.2.2HCl: C, 47.53; H, 4.18;
N, 6.65; S, 5.08. Found: C, 47.27; H, 4.34; N, 6.60; S, 5.29. MS
MH+ calcd. for C.sub.25H.sub.24N.sub.3O.sub.6SF.sub.3 552, found
552.
EXAMPLE 400
Preparation of
N-Hydroxy-4-[4-(4-methoxyphenoxy)phenyl]sulfonyl]-1-(2-pyridinylmethyl)-4-
-piperidine-carboxamide, dihydrochloride
[1270] ##STR3829##
[1271] Part A:
Ethyl-4-[(4-fluorophenylsulfonyl)]-4-piperidinecarboxylate
hydrochloride (2.02 g, 5.76 mmol) was combined with powdered
potassium carbonate (2.48 g, 18 mmol) and N,N-dimethylformamide (12
mL). 2-Picolyl hydrochloride (1.0 g, 6.1 mmol) was added, and the
mixture was stirred for twenty-four hours at forty degrees Celsius.
The reaction mixture was diluted with water (80 mL) and extracted
with ethyl acetate (3.times.50 mL). The combined organic layers
were dried over magnesium sulfate, concentrated, and subjected to
chromatography (ethyl acetate) affording the desired pyridine ester
as an oil (2.30 g, quantitative).
[1272] Part B: The pyridine ethyl ester from Part A (2.30 g, 5.76
mmol) was combined with powdered potassium carbonate (1.29 g, 9
mmol), 4-methoxyphenol (1.12 g, 9.0 mmol), and
N,N-dimethylformamide (3 mL), and the mixture was heated at seventy
five to eighty degrees C. for twenty-four hours. Additional
4-methoxyphenol (300 mg) and potassium carbonate (350 mg) were
added, and the mixture was stirred an additional three hours at
ninety degrees Celsius. The mixture was diluted with water (50 mL)
and extracted with ethyl acetate (3.times.50 mL). The combined
organic layers were dried using magnesium sulfate, concentrated,
and chromatographed, affording the desired ester as an oil (2.85 g,
quantitative).
[1273] Part C: The ester of part B (2.85 g) was combined with
ethanol (18 mL), water (6 mL), and potassium hydroxide (2.24 g, 40
mmol). The mixture was brought to reflux and heated for four and
one-half hours. It was cooled to zero degrees Celsius and acidified
using concentrated aqueous hydrogen chloride. The solvent was
removed, and the resulting solids were dried by azeotroping with
acetonitrile. Vacuum was applied until constant weight was
achieved.
[1274] The crude acid hydrochloride was stirred with
N-methylmorpholine (1 mL), 1-hydroxybenzotriazole (0.945 g, 7
mmol), O-tetrahydropyranyl hydroxylamine (0.82 g, 7 mmol), and
N,N-dimethyformamide (21 mL). After ten minutes,
1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (1.34
g, 7 mmol) was added, and the mixture was stirred overnight. The
reaction was then diluted with half-saturated aqueous sodium
bicarbonate (100 mL), and extracted with ethyl acetate (200 mL,
then 50 mL). The combined organic layers were dried over magnesium
sulfate, concentrated, and chromatographed (9:1 ethyl
acetate:hexane) to afford the desired O-tetrahydropyranyl-protected
hydroxamate as a yellow oil (2.82 g, 88%).
[1275] Part D: The O-tetrahydropyranyl-protected hydroxamate of
part C (2.82 g, 5 mmol) was diluted with methanol (20 mL). Acetyl
chloride (2.1 mL, 30 mmol) was added over two minutes. The reaction
was stirred for 4 hours at ambient temperature, then concentrated
to afford 2.59 g of crude dihydrochloridesalt, which was
recrystallized from ethanol/water, affording 525 mg (18%) of the
title hydroxamate in the first crop. MS (EI) MH.sup.+ calculated
for C.sub.25H.sub.27N.sub.3O.sub.6S: 498, found 498.
EXAMPLE 401
Preparation of
N-Hydroxy-4-[4-(4-cyclohexylthio)phenyl]sulfonyl]-1-(2-methoxyethyl)-4-pi-
peridine-carboxamide, hydrochloride
[1276] ##STR3830##
[1277] Part A:
Ethyl-4-[(4-fluorophenylsulfonyl)]-1-(2-methoxyethyl)-4-piperidinecarboxy-
late (5.5 g, 14 mmol) was combined with powdered potassium
carbonate (2.76 g, 20 mmol), N,N-dimethylformamide (7 mL), and
cyclohexyl mercaptan (2.4 mL, 20 mmol) and was stirred at ambient
temperature for two days. The temperature was raised to forty-five
to fifty degrees Celsius and stirring was continued another 24
hours. Additional quantities of potassium carbonate (1.0 g) and
cyclohexyl mercaptan (1.0 mL) were introduced and the reaction was
heated sixteen additional hours. The mixture was diluted with water
(50 mL), and extracted with ethyl acetate (100 mL, then 25 mL). The
combined organic layers were dried, concentrated, and
chromatographed (ethyl acetate) affording the desired sulfide as a
yellow oil (3.59 mL, 53%).
[1278] Part B: The sulfide from Part A (3.59 gm, 7.4 mmol) was
converted to tetrahydropyranyl-protected hydroxamate by
saponification followed by
1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride
coupling by the method of Example 401, part C, affording 2.16 g
(54%) of the desired tetrahydropyranyl-protected hydroxamate as an
oil.
[1279] Part C: The tetrahydropyranyl-protected hydroxamate from
part B (2.16 g, 4 mmol) was diluted with methanol (16 mL). Acetyl
chloride (1.1 mL, 16 mmol) was added over one minute. The reaction
was stirred for four hours, then concentrated and azeotroped with
acetonitrile to afford 1.11 g of crude product, which was
recrystallized from absolute ethanol to afford in the first crop
804 mg of the title compound (41%). MS (EI) MH.sup.+ calculated for
C.sub.21H.sub.32N.sub.2O.sub.5S.sub.2: 457, found 457.
EXAMPLE 402
Preparation of N-Hydroxyl-1-(2-methoxyethyl)-4-[[(phenylmethoxy)
phenyl]-sulfonyl]-4-piperidinecarboxamide
[1280] ##STR3831##
[1281] Part A:
Ethyl-4-[(4-fluorophenylsulfonyl)]-1-(2-methoxyethyl)-4-piperidinecarboxy-
late (1.58 g, 4.5 mmol) was combined with powdered potassium
carbonate (2.42 g, 18 mmol), N,N-dimethylacetamide (5 mL), and
benzyl alcohol (1.94 mL, 18 mmol) and was stirred at one hundred
forty degrees Celsius for sixteen hours. The mixture was diluted
with water (50 mL), and extracted with ethyl acetate (125 mL, then
25 mL). The combined organic layers were dried, concentrated, and
chromatographed (ethyl acetate) affording the desired ethyl ester
as an oil (1.16 mL, 56%).
[1282] Part B: The ethyl ester from part A (1.16 gm, 2.5 mmol) was
converted to the tetrahydropyranyl-protected hydroxamate by
saponification followed by
1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride
coupling by the method of Example 401, part C, affording 880 mg
(80%) of the tetrahydropyranyl-protected hydroxamate as an oil.
[1283] Part C: The tetrahydropyranyl-protected hydroxamate from
Part B (880 mg, 2.0 mmol) was diluted with methanol (8 mL). Acetyl
chloride (0.68 mL, 10 mmol) was added over one minute. The reaction
was stirred for three hours, then concentrated and azeotroped with
acetonitrile to afford the crude product, which was converted to
free base by adding enough saturated aqueous sodium bicarbonate (25
mL) to neutralize the hydrogen chloride, then extracting with ethyl
acetate (100 mL, then 50 mL). The organic phase was dried with
magnesium sulfate, concentrated, and chromatographed (9:1
dichloromethane:methanol, 1% ammonium hydroxide), affording the
title hydroxamate as a glass, (327 mg, 36%). MS (EI) MH.sup.+
calculated for C.sub.22H.sub.28N.sub.2O.sub.6S: 447, found 447.
EXAMPLE 403
Preparation of
N-hydroxyl-1-(1-methylethyl)-4-[[4-(2-phenylethoxy)-phenyl]sulfonyl]-4-pi-
peridine carboxamide
[1284] ##STR3832##
[1285] Part A:
Ethyl-4-[(4-fluorophenylsulfonyl)]-1-(1-methylethyl)-4-piperidinecarboxyl-
ate (2.75 g, 7.7 mmol) was combined with powdered potassium
carbonate (2.62 g, 19 mmol), N,N-dimethylformamide (10 mL), and
2-phenylethanol (2. mL, 19 mmol) and was stirred at eighty-five
degrees Celsius for twenty four hours. Additional potassium
carbonate (1.3 g) and 2-phenylethanol were added, and the
temperature was raised to one hundred-ten degrees Celsius for
forty-eight hours, then one hundred thirty-five degrees Celsius for
four hours. The mixture was diluted with water (100 mL), and
extracted with ethyl acetate (200 mL, then 25 mL). The combined
organic layers were dried, concentrated, and chromatographed (ethyl
acetate) affording the desired ethyl ester as an oil (3.19 mL,
90%).
[1286] Part B: The ethyl ester from Part A (3.19 gm, 6.9 mmol) was
converted to tetrahydropyranyl-protected hydroxamate by
saponification followed by
1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride
coupling by the method of Example 401, part C, affording 2.27 g
(64%) of the title compound as an oil.
[1287] Part C: The tetrahydropyranyl-protected hydroxamate from
Part B (2.27 mg, 4.4 mmol) was diluted with methanol (16 mL).
Acetyl chloride (0.68 mL, 10 mmol) was added over one minute. The
reaction was stirred for three hours, then concentrated and
azeotroped with acetonitrile to afford the crude product, which was
converted to free base by adding enough saturated sodium
bicarbonate (25 mL) to neutralize the hydrogen chloride, then
extracting with ethyl acetate (100, then 50 mL). The organic phase
was dried with magnesium sulfate, concentrated, and chromatographed
(9:1 dichloromethane:methanol, 1% ammonium hydroxide), affording
the desired hydroxamate as a glass, (819 mg, 42%). MS (EI) MH.sup.+
calculated for C.sub.23H.sub.30N.sub.2O.sub.5S: 449, found 449.
EXAMPLE 404
Preparation of
N-hydroxy-4-[(4-phenylthiophenyl)sulfonyl]-1-(2-propynyl)-4-piperidinecar-
boxamide, phosphoric acid salt
[1288] ##STR3833##
[1289]
N-Hydroxy-4-[(4-phenylthiophenyl)sulfonyl]-1-(2-propynyl)-4-piperi-
dinecarboxamide (430 mg, 1.0 mmol) was dissolved in methanol (15
mL). Concentrated phosphoric acid (67 .mu.L) was added, and the
solution was then concentrated in vacuo. The residue was
recrystallized from methanol, isolated by filtration, and then
recrystallized a second time from methanol/methyl t-butyl ether
affording the title phosphate as a solid (215 mg, 41%). Analytical
calculation for C.sub.21H.sub.22N.sub.2O.sub.4.H.sub.3PO.sub.4: C,
47.72; H, 4.77; N, 5.30, found: C, 47.63; H, 5.04; N, 4.82.
EXAMPLE 405
Preparation of
N-hydroxy-4-[(4-phenylthiophenyl)sulfonyl]-1-(2-propynyl)-4-piperidinecar-
boxamide, .beta.-toluenesulfonic acid salt
[1290] ##STR3834##
[1291]
N-Hydroxy-4-[(4-phenylthiophenyl)sulfonyl]-1-(2-propynyl)-4-piperi-
dinecarboxamide (516 mg, 1.0 mmol) was combined with
p-toluenesulfonic acid, monohydrate (200 mg, 1.05 mmol), and the
mixture was dissolved in methanol (3 mL). After four hours, the
resulting white precipitate was collected by filtration affording
488 mg (81%) of the title tosylate salt, which was characterized
spectroscopically.
EXAMPLE 406
Preparation of
4-[[4-[(2,3-dihydro-1H-inden-2-yl)amino]phenyl]sulfonyl]-N-hydroxy-4-pipe-
ridinecarboxamide, monohydrochloride
[1292] ##STR3835##
[1293] Part A: A solution of the product of Example 9, Part D
(0.979 g, 2.36 mmol), 2-aminoindan hydrochloride (1.00 g, 5.89
mmol), and cesium carbonate (1.92 g, 5.89 mmol) in
N,N-dimethylformamide (8 mL) was heated to 95 degrees Celsius for
22 hours. The reaction was then cooled, diluted with ethyl acetate
(50 mL), and washed with three times with water and once with
brine, then dried over sodium sulfate. Concentration gave a residue
that was chromatographed on silica gel. Elution with ethyl
acetate/hexane (30/70) afforded the desired 4-aminosulfone
derivative (450 mg, 36%). MS (EI) MH.sup.+ calculated for
C.sub.28H.sub.36N.sub.2O.sub.6S: 529, found 529. HRMS M+ calculated
for C.sub.28H.sub.36N.sub.2O.sub.6S: 528.2294, found 528.2306.
[1294] Part B: To a solution of the ethyl ester of part A (450 mg,
0.85 mmol) in ethanol (3 mL), water (2 mL) and tetrahydrofuran (3
mL) was added sodium hydroxide (340 mg, 8.5 mmol), and the solution
was heated to 60 degrees Celsius for 26 hours. The solution was
cooled and then diluted with water (10 mL) followed by 10% aqueous
hydrochloric acid (3 mL) to bring the pH to 2. The resulting
solution was extracted with ethyl acetate. The organic extracts
were combined and washed with water and brine and dried over sodium
sulfate to afford the desired carboxylic acid as a pale brown foam
(376 mg, 88%). Analytical calculation for
C.sub.26H.sub.32N.sub.2O.sub.6S: C, 62.38; H, 6.44; N, 5.60; S,
6.40. Found: C, 62.48; H, 6.69; N, 5.42; S, 6.27.
[1295] Part C: To a solution of the carboxylic acid of part B (305
mg, 0.609 mmol) in N,N-dimethylformamide (2 mL) was added
4-methylmorpholine (247 mg, 2.44 mmol), N-hydroxybenzotriazole (99
mg, 0.73 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (152 mg, 0.79 mmol) followed by
O-(tetrahydro-2H-pyran-2-yl) hydroxylamine (97 mg, 0.82 mmol).
After stirring for 2 days at ambient temperature, the solution was
concentrated to an oil. Water was added and the mixture was
extracted with ethyl acetate. The organic extracts were washed with
water and brine and dried over sodium sulfate. Concentration gave a
brown foam that was chromatographed on silica gel. Elution with
ethyl acetate/hexane (40/60) afforded the protected hydroxamate
derivative as a colorless glass (0.38 g, 100%). MS MH.sup.+
calculated for C.sub.31H.sub.41N.sub.3O.sub.7S: 600, found 600.
[1296] Part D: To a solution of the protected hydroxamate of part C
(350 mg, 0.584 mmol) in methanol (3 mL) and 1,4-dioxane (1.5 mL)
was added 4 N HCl/1,4-dioxane (1.5 mL, 6 mmol), and the solution
was stirred at ambient temperature for 3 hours. Concentration gave
a residue that was triturated with diethyl ether to afford the
title compound as a solid, which was filtered and dried for 40
hours at 51 degrees Celsius (249 mg, 94%). HRMS (ESI) MH.sup.+
calculated for C.sub.21H.sub.25N.sub.3O.sub.4S: 416.1644, found
416.1647.
EXAMPLE 407
Preparation of
4-[[4-(dimethylamino)-phenyl]sulfonyl]-N-hydroxy-4-piperidine-carboxamide-
, monohydrochloride
[1297] ##STR3836##
[1298] Part A: A solution of the product of Example 9, Part D
(0.979 g, 2.36 mmol), 2-aminoindan hydrochloride (1.00 g, 5.89
mmol), and cesium carbonate (1.92 g, 5.89 mmol) in
N,N-dimethylformamide (8 mL) was heated to 95 degrees Celsius for
22 hours. The reaction was then cooled, diluted with ethyl acetate
(50 mL), and washed with three times with water and once with
brine, then dried over sodium sulfate. Concentration gave a residue
that was chromatographed on silica gel. Elution with ethyl
acetate/hexane (30/70) afforded the 4-N,N-dimethylaminosulfone
derivative (590 mg, 57%) alongside the product of example 406. MS
(EI) MH.sup.+ calculated for C.sub.21H.sub.32N.sub.2O.sub.6S: 441,
found 441. HRMS calculated for C.sub.21H.sub.32N.sub.2O.sub.6S:
440.1981, found 440.1978.
[1299] Part B: To a solution of the ethyl ester of part A (580 mg,
1.3 mmol) in ethanol (4 mL), water (3 mL) and tetrahydrofuran (4
mL) was added sodium hydroxide (520 mg, 13 mmol), and the solution
was heated to 62 degrees Celsius for 5 hours. The solution was
cooled and then diluted with water (5 mL) followed by 10% aqueous
hydrochloric acid (5 mL) to acidify to pH=2. The resulting solution
was extracted with ethyl acetate. The organic extracts were
combined and washed with water and brine and dried over sodium
sulfate to afford the desired carboxylic acid as a pale brown foam
(520 mg, 97%). MS MH.sup.+ calculated for
C.sub.19H.sub.28N.sub.2O.sub.6S: 413, found 413.
[1300] Part C: To a solution of the carboxylic acid of part B (500
mg, 1.21 mmol) in N,N-dimethylformamide (4 mL) was added
4-methylmorpholine (490 mg, 4.8 mmol), N-hydroxybenzotriazole (197
mg, 1.45 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (302 mg, 1.57 mmol) followed by
O-(tetrahydro-2H-pyran-2-yl) hydroxylamine (192 mg, 1.63 mmol).
After stirring for 2 days at ambient temperature, the solution was
concentrated to an oil. Water (25 mL) was added and the mixture was
extracted with ethyl acetate. The organic extracts were washed with
water and brine and dried over sodium sulfate. Concentration gave a
brown oil, which crystallized from a mixture of ethyl acetate,
hexane and methylene chloride (1:1:2) to afford the protected
hydroxamate derivative as a colorless solid (506 mg, 82%). MS
MH.sup.+ calculated for C.sub.24H.sub.37N.sub.3O.sub.7S: 512, found
512.
[1301] Part D: To a solution of the protected hydroxamate of part C
(477 mg, 0.932 mmol) in methanol (3 mL) and 1,4-dioxane (3 mL) was
added 4 N HCl/1,4-dioxane (2.3 mL, 9.3 mmol), and the solution was
stirred at ambient temperature for 3 hours. Concentration gave a
residue that was triturated with diethyl ether to afford the title
compound as a solid, which was filtered and dried for 40 hours at
51 degrees Celsius (372 mg, 100%). HRMS (ESI) MH.sup.+ calculated
for C.sub.14H.sub.21N.sub.3O.sub.4S: 328.1331, found 328.1343.
EXAMPLE 408
Preparation of
1-cyclopropyl-4-[[4-[(2,3-dihydro-1,4-benzodioxin-6-yl)oxy]phenyl]-sulfon-
yl]-N-hydroxy-4-piperidine-carboxamide, monohydrochloride
[1302] ##STR3837##
[1303] Part A: To a solution of the product of Example 398, Part A
(1.36 g, 3.47 mol) in N,N-dimethylformamide (8 mL) was added
6-hydroxybenzo-1,4-dioxane (792 mg, 5.21 mmol) followed by cesium
carbonate (2.83 g, 8.69 mmol) and the solution was heated at one
hundred degrees Celsius for 20 hours. The solution was partitioned
between ethyl acetate and H.sub.2O. The aqueous layer was extracted
with ethyl acetate and the combined organic layers were washed with
H.sub.2O and saturated NaCl and dried over Na.sub.2SO.sub.4.
Filtration through a silica pad (ethyl acetate/hexane) provided the
phenoxyphenyl compound as an orange oil (1.81 g, quantitative
yield). MS(CI) MH.sup.+ calculated for C.sub.25H.sub.29NO.sub.7S:
488, found 488.
[1304] Part B: To a solution of the phenoxyphenol compound of part
A (1.81 g, <3.47 mmol) in tetrahydrofuran (10 mL) and ethanol
(10 mL) was added sodium hydroxide (1.39 g, 34.7 mmol) in H.sub.2O
(5 mL). The solution was heated to sixty degrees Celsius for 20
hours. The solution was concentrated in vacuo and the aqueous
residue was acidified to pH=2 with 10% HCl. The resulting solid was
collected by vacuum filtration to provide the acid as a yellow
solid (1.23 g, 72%). MS(CI) MH.sup.+ calculated for
C.sub.23H.sub.25NO.sub.7S: 460, found 460. HRMS calculated for
C.sub.23H.sub.25NO.sub.7S: 460.1430, found 460.1445.
[1305] Part C: To a suspension of the acid of part B (1.21 g, 2.46
mmol) in N,N-dimethylformamide (20 mL) was added
N-hydroxybenzotriazole (399 mg, 2.95 mmol), 4-methylmorpholine
(0.81 mL, 7.38 mmol) and O-(tetrahydro-2H-pyran-2-yl)hydroxylamine
(432 mg, 3.69 mmol). After stirring for one hour
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (660
mg, 3.44 mmol) was added and the solution was stirred for 20 hours
at ambient temperature. The solution was partitioned between ethyl
acetate and H.sub.2O and the aqueous layer was extracted with ethyl
acetate. The organic layer was washed with saturated NaCl and dried
over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as a yellow oil
(940 mg, 70%). MS(CI) MH.sup.+ calculated for
C.sub.29H.sub.34N.sub.2O.sub.2S: 559, found 559.
[1306] Part D: To a solution of the protected hydroxamate of part C
(920 mg, 1.68 mmol) in 1,4-dioxane (15 mL) was added 4N HCl in
1,4-dioxane (10 mL). After stirring at ambient temperature for 2
hours the resulting precipitate was collected by vacuum filtration
and washed with ethyl ether to provided the title compound as a
white solid (510 mg, 60%). MS(CI) MH.sup.+ calculated for
C.sub.23H.sub.26N.sub.2O.sub.7S: 475, found 475. HRMS calculated
for C.sub.23H.sub.26NO.sub.7S: 475.1539, found 475.1553. Analytical
calculation for
C.sub.23H.sub.26N.sub.2O.sub.7S.1.15HCl.0.5H.sub.2O: C, 52.57; H,
5.40; N, 5.33; Cl, 7.76. Found: C, 52.62; H, 5.42; N, 5.79; Cl,
7.71.
EXAMPLE 409
Preparation of
N-hydroxy-4-[[4-[4-(trifluoromethyl)phenoxy]phenyl]sulfonyl]-4-piperidine-
carboxamide, monohydrochloride
[1307] ##STR3838##
[1308] Part A: To a solution of the product of Example 9, Part D
(1.5 g, 3.61 mmol) in N,N-dimethylformamide (10 mL) was added
cesium carbonate (2.94 g, 9.03 mmol) and
.alpha.,.alpha.,.alpha.-trifluoro-p-cresol (877 mg, 5.41 mmol). The
solution was heated to ninety degrees Celsius for 20 hours. The
solution was partitioned between ethyl acetate and H.sub.2O and the
organic layer was washed with saturated NaCl and dried over
Na.sub.2SO.sub.4. Filtration through a silica pad (ethyl acetate)
provided the diaryl ether as a yellow oil (2.30 g, quantitative
yield). MS(CI) MH.sup.+ calculated for
C.sub.26H.sub.30NO.sub.7SF.sub.3: 558, found 558.
[1309] Part B: To a solution of the diaryl ether of part A (2.30 g,
<3.61 mmoL) in tetrahydrofuran (10 mL) and ethanol (10 mL) was
added sodium hydroxide (1.44 g, 36.1 mmol) in H.sub.2O (5 mL) and
the solution was heated to sixty degrees Celsius for 18 hours. The
solution was concentrated and the aqueous residue was acidified to
pH=2 with 10% HCl and extracted with ethyl acetate. The organic
layer was washed with saturated NaCl and dried over
Na.sub.2SO.sub.4. Concentration in vacuo provided the acid as a
solid (2.11 g, quantitative yield). MS(CI) MH.sup.+ calculated for
C.sub.24H.sub.26NO.sub.7SF.sub.3: 530, found 530.
[1310] Part C: To a solution of the acid of part B (2.11 g,
<3.61 mmol) in N,N-dimethylformamide (10 mL) was added
N-hydroxybenzotriazole (586 mg, 4.33 mmol), 4-methylmorpholine
(1.19 mL, 10.83 mmol) and O-(tetrahydro-2H-pyran-2-yl)hydroxylamine
(634 mg, 5.41 mmol). After stirring for one hour,
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (969
mg, 5.05 mmol) was added and the solution was stirred for 18 hours.
The solution was partitioned between ethyl acetate and H.sub.2O.
The aqueous layer was extracted with ethyl acetate and the combined
organic layers were washed with H.sub.2O and saturated NaCl and
dried over MgSO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as a clear,
colorless oil (1.40 g, 62 g). MS (CI) MH.sup.+ calculated for
C.sub.29H.sub.35N.sub.2O.sub.8SF.sub.3: 629, found 629.
[1311] Part D: To a solution of the protected hydroxamate of part C
(1.40 g, 2.23 mmol) in 1,4-dioxane (10 mL) was added 4N HCl in
1,4-dioxane (15 mL) and the solution was stirred for 2 hours. The
solution was diluted with ethyl ether and the resulting precipitate
was collected by vacuum filtration to provide the title compound as
a white solid (747 mg, 70%). HPLC purity: 97.5%. MS(CI) MH.sup.+
calculated for C.sub.19H.sub.19N.sub.2O.sub.5SF.sub.3: 445, found
445. HRMS calculated for C.sub.19H.sub.19N.sub.2O.sub.5SF.sub.3:
445.1045, found 445.1052. Analytical calculation for
C.sub.19H.sub.19N.sub.2O.sub.5SF.sub.3.0.5H.sub.2O.1.0HCl: C,
46.58; H, 4.32; N, 5.72; S, 6.55; Cl, 7.24. Found: C, 46.58; H,
3.82; N, 5.61; S, 6.96; Cl, 7.37.
EXAMPLE 410
Preparation of
N-hydroxy-4-[[4-[(trifluoromethoxy)phenoxy]phenyl]sulfonyl]-4-piperidinec-
arboxamide, monohydrochloride
[1312] ##STR3839##
[1313] Part A: To a solution of the product of Example 9, Part D
(1.5 g, 3.61 mmol) in N,N-dimethylformamide (10 mL) was added
cesium carbonate (2.94 g, 9.03 mmol) and 4-(trifluoromethoxy)phenol
(0.70 mL, 5.41 mmol). The solution was heated to ninety degrees
Celsius for 20 hours. The solution was partitioned between ethyl
acetate and H.sub.2O and the organic layer was washed with
saturated NaCl and dried over Na.sub.2SO.sub.4. Filtration through
a silica pad (ethyl acetate) provided the phenoxyphenol as a yellow
oil (2.11 g, quantitative yield). MS(CI) MNa.sup.+ calculated for
C.sub.26H.sub.30NO.sub.8SF.sub.3: 596, found 596.
[1314] Part B: To a solution of the phenoxyphenol of part A (2.11
g, <3.61 mmoL) in tetrahydrofuran (10 mL) and ethanol (10 mL)
was added sodium hydroxide (1.44 g, 36.1 mmol) in H.sub.2O (5 mL),
and the solution was heated to sixty degrees Celsius for 18 hours.
The solution was concentrated and the aqueous residue was acidified
to pH=2 with 10% HCl and extracted with ethyl acetate. The organic
layer was washed with saturated NaCl and dried over
Na.sub.2SO.sub.4. Concentration in vacuo provided the acid as a
solid (2.2 g, quantitative yield). MS(CI) MH.sup.+ calculated for
C.sub.24H.sub.26NO.sub.6SF.sub.3: 546, found 546.
[1315] Part C: To a solution of the acid of part B (2.2 g) in
N,N-dimethylformamide (10 mL) was added N-hydroxybenzotriazole (586
mg, 4.33 mmol), 4-methylmorpholine (1.19 mL, 10.83 mmol) and
O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (634 mg, 5.41 mmol).
After stirring for thirty minutes,
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (969
mg, 5.05 mmol) was added and the solution was stirred for 96 hours.
The solution was partitioned between ethyl acetate and H.sub.2O.
The aqueous layer was extracted with ethyl acetate and the combined
organic layers were washed with H.sub.2O and saturated NaCl and
dried over MgSO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as a clear,
colorless oil (1.26 g, 53%).
[1316] Part D: To a solution of the protected hydroxamate of part C
(1.26 g, 1.96 mmol) in 1,4-dioxane (10 mL) was added 4N HCl in
1,4-dioxane (10 mL) and the solution was stirred for 2 hours. The
solution was diluted with ethyl ether and the resulting precipitate
was collected by vacuum filtration to provide the title compound as
a white solid (455 mg, 47 W). HPLC purity: 98%. MS(CI) MH.sup.+
calculated for C.sub.19H.sub.19N.sub.2O.sub.6SF.sub.3: 461, found
461. HRMS calculated for C.sub.19H.sub.19N.sub.2O.sub.6SF.sub.3:
461.0994, found 461.0997. Analytical calculation for
C.sub.19H.sub.19N.sub.2O.sub.6SF.sub.3.1.0HCl: C, 45.93; H, 4.06;
N, 5.64; S, 6.45; Cl, 6.45. Found: C, 46.23; H, 4.07; N, 5.66; S,
6.59; Cl, 7.03.
EXAMPLE 411
Preparation of
1-cyclopropyl-4-[[4-[(2,3-dihydro-1,4-benzodioxin-6-yl)amino]-phenyl]sulf-
onyl]-N-hydroxy-4-piperidine-carboxamide, monohydrochloride
[1317] ##STR3840##
[1318] Part A: To a solution of ester of part C, Example 91 (1.57
g, 3.40 mmol) in 1,4-dioxane (5 mL) was added 4M HCl in 1,4-dioxane
(10 mL). After stirring for one hour the resulting precipitate was
collected by vacuum filtration to provide the amine hydrochloride
salt as a white solid (1.16 g, 86%).
[1319] Part B: To a slurry of the amine hydrochloride salt of part
A (1.16 g, 2.91 mmol) in methanol (10 mL) was added acetic acid
(1.68 mL, 29.1 mmol) followed by
(1-ethyoxycyclopropyl)-oxytrimethylsilane (3.51 mL, 17.5 mmol) and
sodium cyanoborohydride (823 mg, 13.1 mmol). The solution was
heated to reflux for six hours. The solution was filtered and the
filtrate was concentrated in vacuo. The residue was dissolved into
ethyl acetate and washed with H.sub.2O, aqueous sodium hydroxide
and saturated NaCl and dried over MgSO.sub.4. Concentration in
vacuo provided the N-cyclopropyl compound as a white solid (1.03 g,
88%).
[1320] Part C: To a solution of the N-cyclopropyl compound of part
B (1.0 g, 2.49 mmol) in toluene (6 mL) was added cesium carbonate
(1.14 g, 3.49 mmol), tris(dibenzylideneacetone)dipalladium(0) (69
mg, 0.075 mmol) R-(+)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl
(69 mg, 0.112 mmol) and 1,4-benzodioxane-6-amine (451 mg, 2.99
mmol) and the solution was heated to one hundred degrees Celsius
for 19 hours. The solution was diluted with ethyl ether and
filtered through Super Cel.RTM.. The filtrate was concentrated and
chromatography (on silica, ethyl acetate/hexane) provided the
aniline compound as an orange oil (561 mg, 48%). MS(CI) MH.sup.+
calculated for C.sub.24H.sub.28N.sub.2O.sub.6S: 473, found 473.
[1321] Part D: To a solution of the aniline compound of part C (550
mg, 1.16 mmol) in tetrahydrofuran (10 mL) was added potassium
trimethylsilanolate (297 mg, 3.48 mmol) and the solution was
stirred for 18 hours at ambient temperature. The solution was
concentrated and the resulting residue was suspended in H.sub.2O.
The solid was collected by vacuum filtration to provide the crude
acid (282 mg).
[1322] Part E: To a solution of the crude acid of part D (282 mg,
0.62 mmol) in N,N-dimethylformamide (10 mL) was added
N-hydroxybenzotriazole (100 mg, 0.74 mmol), 4-methylmorpholine
(0.20 mL, 1.86 mmol), and O-(tetrahydro-2H-pyran-2-yl)
hydroxylamine (108 mg, 0.93 mmol). After stirring for 30 minutes,
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (166
mg, 0.87 mmol) was added and the solution was stirred for 72 hours.
The solution was partitioned between ethyl acetate and H.sub.2O and
the aqueous layer was extracted with ethyl acetate. The combined
organic layers were washed with H.sub.2O and saturated NaCl and
dried over Na.sub.2SO.sub.4. Chromatography (on silica, ethyl
acetate/hexane) provided the protected hydroxamate as a white solid
(150 mg, 43%). MS (CI) MH.sup.+ calculated for
C.sub.28H.sub.35N.sub.3O.sub.7S: 558, found 558.
[1323] Part F: To a solution of protected hydroxamate of part E
(133 mg, 0.24 mmol) in 1,4-dioxane (5 mL) was added 4N HCl in
1,4-dioxane (10 mL) and the solution was stirred for 1.5 hours. The
solution was diluted with ethyl ether and the resulting precipitate
was collected by vacuum filtration to provide the title hydroxamate
as a white solid (80 mg, 66%). MS (CI) MH.sup.+ calculated for
C.sub.23H.sub.27N.sub.3O.sub.6S: 474, found 474. HRMS calculated
for C.sub.23H.sub.27N.sub.3O.sub.6S: 474.1699, found 474.1715.
Analytical calculation for
C.sub.23H.sub.27N.sub.3O.sub.6S.1.5HCl.1.5H.sub.2O: C, 49.75; H,
5.72; N, 7.57; S, 5.77; Cl, 9.58. Found: C, 49.78; H, 5.52; N,
8.05; S, 9.16; Cl, 5.76.
EXAMPLE 412
Preparation of
1-cyclopropyl-4-[[4-[4-[[4-(2,3-dimethylphenyl)-1-piperazinyl]-carbonyl]--
1-piperidinyl]phenyl]sulfonyl]-N-hydroxy-4-piperidine-carboxamide,
trihydrochloride
[1324] ##STR3841##
[1325] Part A: To a solution of the isonipecotic acid (10.5 g, 81.3
mmol) in H.sub.2O (325 mL) was added sodium carbonate (8.37 g, 81.3
mmol) and the solution was stirred until homogeneous. To this
solution was added di-tert-butyl dicarbonate (18.22 g, 83.5 mmol)
in 1,4-dioxane (77 mL) dropwise, and the resulting solution was
stirred for 72 hours at ambient temperature. The solution was
concentrated in vacuo and the resulting aqueous solution was washed
with ethyl ether. The aqueous solution was acidified to pH=2 with
concentrated HCl. The solution was extracted with ethyl ether and
concentrated in vacuo provided a white solid. Recrystallization
(ethyl acetate) provided N-Boc-isonipecotic acid as a white solid
(10 g, 54%).
[1326] Part B: To a solution of the N-Boc-isonipecotic acid of part
A (2.14 g, 9.33 mmol) in dichloromethane (19 mL) were added
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (1.82
g, 9.49 mmol), N-hydroxybenzotriazole (1.32 g, 9.77 mmol) and
1-(2,3-xylyl)piperazine monohydrochloride (2.47 g, 10.89 mmol).
After 30 minutes diisopropylethylamine (0.74 mL, 20.7 mmol) was
added, and the solution was stirred for 18 hours. The solution was
concentrated in vacuo and the residue was dissolved into ethyl
acetate and washed with 1M HCl, saturated NaHCO.sub.3 and saturated
NaCl. The solution was dried over MgSO.sub.4. Recrystallization
(ethyl acetate/hexane) provided the amide as an off-white solid
(2.65 g, 71%).
[1327] Part C: To a solution of the amide of part B (1.0 g, 3.75
mmol) in dichloromethane (5 mL) was added trifluoroacetic acid (5
mL) and the solution was stirred for 15 minutes. The solution was
concentrated in vacuo and the resulting oil was dissolved into
N,N-dimethylacetamide (10 mL). To this solution was added the
product of Example 398, Part A (979 mg, 2.50 mmol) and cesium
carbonate (3.67 g, 11.25 mmol) and the solution was heated at one
hundred and ten degrees Celsius for 17 hours. The solution was
partitioned between ethyl acetate and H.sub.2O. The organic layer
was washed with H.sub.2O and saturated NaCl and dried over
Na.sub.2SO.sub.4. Concentration in vacuo provided the piperidine
compound as a white solid (1.89 g, quantitative yield). MS(CI)
MH.sup.+ calculated for C.sub.35H.sub.48N.sub.4O.sub.5S: 637, found
637.
[1328] Part D: To a solution of the piperidine compound of part C
(1.89 g) in ethanol (8 mL) and tetrahydrofuran (8 mL) was added
sodium hydroxide (1.0 g, 25 mmol) in H.sub.2O (5 mL). The solution
was heated to fifty degrees Celsius for 8 hours and at sixty-two
degrees Celsius for 8 hours. The solution was concentrated in vacuo
and the residue was diluted with H.sub.2O and acidified to pH=3
with 3M HCl. The resulting precipitate was collected by vacuum
filtration to provide the acid as a white solid (1.16 g, 65%).
MS(CI) MH.sup.+ calculated for C.sub.33H.sub.44N.sub.4O.sub.5S:
609, found 609.
[1329] Part E: To a solution of the acid of part D (1.16 g, 1.62
mmol) in N,N-dimethylformamide (10 mL) were added
N-hydroxybenzotriazole (262 mg, 1.94 mmol), 4-methylmorpholine
(0.90 mL, 8.2 mmol) and O-(tetrahydro-2H-pyran-2-y)l hydroxylamine
(284 mg, 2.4 mmol). After stirring for 45 minutes,
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (334
mg, 2.2 mmol) was added and the solution was stirred for 18 hours
at ambient temperature. The solution was partitioned between ethyl
acetate and H.sub.2O and the organic layer was washed with H.sub.2O
and saturated NaCl and dried over Na.sub.2SO.sub.4. Trituration
(dichloromethane) provided the protected hydroxamate as a white
solid (850 mg, 75%). MS(CI) MH.sup.+ calculated for
C.sub.38H.sub.53N.sub.5O.sub.6S: 708, found 708. Analytical
calculation for C.sub.38H.sub.53N.sub.5O.sub.6S.0.5H.sub.2O: C,
63.66; H, 7.59; N, 9.77; --S, 4.47. Found: C, 63.68; H, 7.54; N,
9.66; S, 4.67.
[1330] Part F: To a solution of the protected hydroxamate of part E
(746 mg, 1.07 mmol) in methanol (10 mL) was added 4M HCl in
1,4-dioxane (10 mL) and the solution was stirred for one hour. The
resulting solid was collected by vacuum filtration and washed with
ethyl ether to provide the title compound as a white solid (650 mg,
83%). MS(CI) MH.sup.+ calculated for
C.sub.33H.sub.45N.sub.5O.sub.5S: 624, found 624. HRMS calculated
for C.sub.33H.sub.49N.sub.5O.sub.5S: 624.3220, found 624.3253.
Analytical calculation for
C.sub.33H.sub.45N.sub.5O.sub.5S.3.5HCl.H.sub.2O: C, 51.82; H, 6.59;
N, 9.16. Found: C, 52.04; H, 6.30; N, 8.96.
EXAMPLE 413
Preparation of
4-[[4-[4-[[4-(2,3-dimethylphenyl)-1-piperazinyl]carbonyl]-1-piperidinyl]p-
henyl]sulfonyl]-N-hydroxy-1-(2-methoxyethyl)-4-piperidine-carboxamide,
trihydrochloride
[1331] ##STR3842##
[1332] Part A: To a solution of the isonipecotic acid (10.5 g, 81.3
mmol) in H.sub.2O (325 mL) was added sodium carbonate (8.37 g, 81.3
mmol) and the solution was stirred until homogeneous. To this
solution was added di-tert-butyl dicarbonate (18.22 g, 83.5 mmol)
in 1,4-dioxane (77 mL) dropwise and the resulting solution was
stirred for 72 hours at ambient temperature. The solution was
concentrated in vacuo and the resulting aqueous solution was washed
with ethyl ether. The aqueous solution was acidified to pH=2 with
concentrated HCl. The solution was extracted with ethyl ether and
concentration in vacuo provided a white solid. Recrystallization
(ethyl acetate) provided N-Boc-isonipecotic acid as a white solid
(10 g, 54%).
[1333] Part B: To a solution of the N-Boc-isonipecotic acid of part
A (2.14 g, 9.33 mmol) in dichloromethane (19 mL) were added
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (1.82
g, 9.49 mmol), N-hydroxybenzotriazole (1.32 g, 9.77 mmol) and
1-(2,3-xylyl)piperazine monohydrochloride (2.47 g, 10.89 mmol).
After 30 minutes, diisopropylethylamine (0.74 mL, 20.7 mmol) was
added and the solution was stirred for 18 hours. The solution was
concentrated in vacuo and the residue was dissolved into ethyl
acetate and washed with 1M HCl, saturated NaHCO.sub.3 and saturated
NaCl. The solution was dried over MgSO.sub.4. Recrystallization
(ethyl acetate/hexane) provided the amide as an off-white solid
(2.65 g, 71%).
[1334] Part C: To a solution of the amide of part B (965 mg, 2.41
mmol) in dichloromethane (5 mL) was added trifluoroacetic acid (5
mL) and the solution was stirred for 15 minutes. The solution was
concentrated in vacuo and the resulting oil was dissolved into
N,N-dimethylacetamide (10 mL). To this solution were added
ethyl-4-[(4-fluorophenylsulfonyl)]-1-(2-methoxyethyl)-4-piperidinecarboxy-
late (600 mg, 1.61 mmol) and cesium carbonate (2.75 g, 8.43 mmol),
and the solution was heated at one hundred and ten degrees Celsius
for 20 hours. The solution was partitioned between ethyl acetate
and H.sub.2O. The organic layer was washed with H.sub.2O and
saturated NaCl and dried over Na.sub.2SO.sub.4. Concentration in
vacuo provided the piperidine compound as a white solid (1.26 g,
quantitative yield). MS(CI) MH.sup.+ calculated for
C.sub.35H.sub.50N.sub.4O.sub.6S: 655, found 655.
[1335] Part D: To a solution of the piperidine compound of part C
(1.26 g) in ethanol (5 mL) and tetrahydrofuran (5 mL) was added
sodium hydroxide (644 mg, 16 mmol) in H.sub.2O (5 mL). The solution
was heated to sixty degrees Celsius for 8 hours and at sixty-two
degrees Celsius for 8 hours. The solution was concentrated in vacuo
and the residue was diluted with H.sub.2O and acidified to pH=3
with 3M HCl. The resulting precipitate was collected by vacuum
filtration to provide the acid as a white solid (650 mg, 65%). MS
(CI) MH.sup.+ calculated for C.sub.33H.sub.46N.sub.4O.sub.6S: 627,
found 627.
[1336] Part E: To a solution of the acid of part D (620 g, 0.94
mmol) in N,N-dimethylformamide (10 mL) were added
N-hydroxybenzotriazole (152 mg, 1.13 mmol), 4-methylmorpholine
(0.52 mL, 4.7 mmol) and O-(tetrahydro-2H-pyran-2-yl) hydroxylamine
(165 mg, 1.4 mmol). After stirring for 45 minutes,
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (252
mg, 1.32 mmol) was added and the solution was stirred for 18 hours
at ambient temperature. The solution was partitioned between ethyl
acetate and H.sub.2O, and the organic layer was washed with
H.sub.2O and saturated NaCl, and dried over Na.sub.2SO.sub.4.
Concentration in vacuo provided the protected hydroxamate as a
white solid (641 mg, 94%). MS(CI) MH.sup.+ calculated for
C.sub.38H.sub.55N.sub.5O.sub.7S: 726, found 726.
[1337] Part F: To a solution of the protected hydroxamate of part E
(630 mg, 0.87 mmol) in methanol (8 mL) was added 4M HCl in
1,4-dioxane (10 mL) and the solution was stirred for one hour. The
resulting solid was collected by vacuum filtration and washed with
ethyl ether to provide the title compound as a white solid (624 mg,
83%). MS(CI) MH.sup.+ calculated for
C.sub.33H.sub.47N.sub.5O.sub.6S: 642, found 642.
EXAMPLE 414
Preparation of
N-hydroxy-4-[[4-[4-(1-methylethyl)phenoxy]phenyl]sulfonyl]-1-(2-propynyl)-
-4-piperidinecarboxamide, monohdyrochloride
[1338] ##STR3843##
[1339] Part A: To a solution of the product of Example 9, Part E
(6.0 g, 15.4 mmol) and powdered K.sub.2CO.sub.3 (8.0 g, 38.5 mmol)
in N,N-dimethylformamide (70 mL) was added 4-isopropyl phenol (5.24
g, 38.5 mmol) at ambient temperature, and the solution was heated
to ninety degrees Celsius for 32 hours. The solution was
concentrated under high vacuum and the residue was dissolved in
ethyl acetate. The organic layer was washed with 1N NaOH, H.sub.2O
and dried over MgSO.sub.4. Chromatography on silica eluting with
ethyl acetate/hexane provided the diaryl ether as light yellow gel
(6.89 g, 87%).
[1340] Part B: To a solution of diaryl ether of part A (6.89 g,
14.7 mmol) in ethanol (14 mL) and tetrahydrofuran (14 mL) was added
NaOH (5.88 g, 147 mmol) in H.sub.2O (28 mL) from an addition funnel
at ambient temperature. The solution was then heated to sixty
degrees Celsius for 17 hours and ambient temperature for 24 hours.
The solution was concentrated in vacuo and diluted with water. The
aqueous layer was extracted with ether and acidified to pH=2.
Vacuum filtration of white precipitation provided the acid as a
white solid (6.56 g, quantitative yield).
[1341] Part C: To the solution of acid of part B (6.56 g, 14.86
mmol), N-methyl morpholine (6.5 mL, 59.4 mmol),
1-hydroxybenzotriazole (6.0 g, 44.6 mmol) and O-tetrahydropyranyl
hydroxylamine (3.5 g, 29.7 mmol) in N,N-dimethylformamide (50 mL)
was added 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (8.5 g, 44.6 mmol), and the solution was stirred at
ambient temperature for 20 hours. The solution was concentrated
under high vacuum and the residue was dissolved in ethyl acetate.
The organic layer was washed with saturated aqueous NaHCO.sub.3,
H.sub.2O and dried over MgSO.sub.4. Concentration in vacuo and
chromatography on silica eluting with ethyl acetate/hexane provided
the tetrahydropyranyl-protected hydroxamate as a white foam (8.03
g, quantitative yield).
[1342] Part D: To a solution of 4N HCl in dioxane (37 mL, 149 mmol)
was added a solution of the tetrahydropyranyl-protected hydroxamate
of part C (8.03 g, 14.9 mmol) in methanol (5 mL) and dioxane (15
mL) and the solution was stirred at ambient temperature for 3
hours. Concentration in vacuo and trituration with diethyl ether
provided the title compound as a white solid (5.0 g, 71.1%).
Analytical calculation for
C.sub.24H.sub.28N.sub.2O.sub.5S.HCl.0.9H.sub.2O: C, 56.61; H, 6.10;
N, 5.50; S, 6.30. Found: C, 56.97; H, 6.05; N, 5.41; S, 5.98. HRMS
MH.sup.+ calculated for C.sub.24H.sub.28N.sub.2O.sub.5S: 457.1797,
found 457.1816.
EXAMPLE 415
Preparation of
4-[[4-(1,3-benzodioxol-5-yloxy)phenyl)sulfonyl]-N-hydroxy-1-(2-methoxyeth-
yl)-4-piperidinecarboxamide, monohydrochloride
[1343] ##STR3844##
[1344] Part A: To a solution of the product of Example 9, Part D
(25 g, 67.3 mmol) and powdered K.sub.2CO.sub.3 (23.3 g, 169 mmol)
in N,N-dimethylformamide (150 mL) was added sesamol (23.2 g, 168
mmol) at ambient temperature and solution was heated to ninety
degrees Celsius for 25 hours. The solution was concentrated under
high vacuum and the residue was dissolved in ethyl acetate. The
organic layer was washed with 1N NaOH, H.sub.2O and dried over
MgSO.sub.4. Chromatography on silica eluting with ethyl
acetate/hexane provided the desired diaryl ether as light yellow
gel (33.6 g, 93.6%).
[1345] Part B: To a solution of diaryl ether of part A (4.0 g, 7.4
mmol) in dichloromethane (7 mL) cooled to zero degrees Celsius was
added trifluroacetic acid (7 mL) and the solution was stirred at
ambient temperature for 2 hours. Concentration in vacuo provided
the amine trifluoroacetate salt as a light yellow gel. To the
solution of the trifluoroacetate salt and K.sub.2CO.sub.3 (3.6 g.,
26 mmol) in N,N-dimethylformamide (50 mL) was added 2-bromoethyl
methyl ether (1.8 mL, 18.7 mmol) and the solution was stirred at
ambient temperature for 36 hours. The N,N-dimethylformamide was
evaporated under high vacuum and residue was diluted with ethyl
acetate. The organic layer was washed with water and dried over
Mg.sub.2SO.sub.4. Concentration in vacuo provided the methoxyethyl
amine as a light yellow gel (3.7 g, quantitative yield).
[1346] Part C: To a solution of methoxyethyl amine of part B (3.7
g, 7.5 mmol) in ethanol (7 mL) and tetrahydrofuran (7 mL) was added
NaOH (3.0 g, 75 mmol) in H.sub.2O (15 mL) from an addition funnel
at ambient temperature. The solution was then heated to sixty
degrees Celsius for 19 hours and ambient temperature for 12 hours.
The solution was concentrated in vacuo and diluted with water. The
aqueous layer was extracted with ether and acidified to pH=2.
Vacuum filtration of the white precipitate provided the acid as a
white solid (4.0 g, quantitative yield).
[1347] Part D: To a solution of the acid of part C (4.0 g, 7.5
mmol), N-methyl morpholine (3.3 mL, 30 mmol),
1-hydroxybenzotriazole (3.0 g, 22.5 mmol) and O-tetrahydropyranyl
hydroxylamine (1.8 g, 15 mmol) in N,N-dimethylformamide (100 mL)
was added 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (4.3 g, 22.5 mmol), and the solution was stirred at
ambient temperature for 4 days. The solution was concentrated under
high vacuum and the residue was dissolved in ethyl acetate. The
organic layer was washed with saturated aqueous NaHCO.sub.3,
H.sub.2O and dried over Mg.sub.2SO.sub.4. Concentration in vacuo
and chromatography on silica eluting with ethyl acetate/hexane
provided the tetrahydropyranyl-protected hydroxamate as a white
foam (2.40 g, 57.1%).
[1348] Part E: To a solution of 4N HCl in dioxane (11 mL, 43 mmol)
was added a solution of the tetrahydropyranyl-protected hydroxamate
of part D (2.4 g, 4.3 mmol) in methanol (2 mL) and dioxane (6 mL)
and the solution was stirred at ambient temperature for 3 hours.
Concentration in vacuo and trituration with ether provided
hydroxamate hydrochloride salt as a white solid (1.88 g, 85.8%).
Analytical calculation for
C.sub.22H.sub.26N.sub.2O.sub.8S.HCl.H.sub.2O: C, 49.58; H, 5.48; N,
5.26; S, 6.02. Found: C, 49.59; H, 5.53; N, 5.06; S, 5.71. HRMS
MH.sup.+ calculated for C.sub.22H.sub.26N.sub.2O.sub.8S: 479.1488,
found 479.1497.
EXAMPLE 416
Preparation of
N-hydroxy-1-(2-methoxyethyl)-4-[[4-[4-(trifluoro-methoxy)phenoxy]phenyl]s-
ulfonyl}-4-piperidinecarboxamide, monohydrochloride
[1349] ##STR3845##
[1350] Part A: To a solution of the product of Example 9, Part D
(30 g, 161 mmol) in dichloromethane (50 mL) cooled to zero degrees
Celsius was added trifluroacetic acid (25 mL) and the solution was
stirred at ambient temperature for 1 hour. Concentration in vacuo
provided the amine trifluoroacetate salt as a light yellow gel. To
the solution of the trifluoroacetate salt and K.sub.2CO.sub.3 (3.6
g, 26 mmol) in N,N-dimethylformamide (50 mL) cooled to zero degrees
Celsius was added 2-bromoethyl methyl ether (19 mL, 201 mmol), and
solution was stirred at ambient temperature for 36 hours. Then,
N,N-dimethylformamide was evaporated under high vacuum and the
residue was diluted with ethyl acetate. The organic layer was
washed with water and dried over MgSO.sub.4. Concentration in vacuo
provided the methoxyethyl amine as a light yellow gel (26.03 g,
86.8%).
[1351] Part B: To a solution of methoxyethyl amine (6.0 g, 16.0
mmol) of part A and powdered K.sub.2CO.sub.3 (4.44 g, 32 mmol) in
N,N-dimethylformamide (30 mL) was added 4-(trifluoromethoxy)phenol
(5.72 g, 32 mmol) at ambient temperature and the solution was
heated to ninety degrees Celsius for 25 hours. The solution was
concentrated under high vacuum and the residue was dissolved in
ethyl acetate. The organic layer was washed with 1N NaOH, H.sub.2O
and dried over MgSO.sub.4. Chromatography on silica eluting with
ethyl acetate/hexane provided trifluoromethoxy phenoxyphenyl
sulfone as a light yellow gel (7.81 g, 91.5%).
[1352] Part C: To a solution of trifluoromethoxy phenoxyphenyl
sulfone of part B (7.81 g, 14.7 mmol) in ethanol (14 mL) and
tetrahydrofuran (14 mL) was added NaOH (5.88 g, 147 mmol) in
H.sub.2O (28 mL) from an addition funnel at ambient temperature.
The solution was then heated to sixty degrees Celsius for 18 hours.
The solution was concentrated in vacuo and diluted with water. The
aqueous layer was extracted with ether and acidified to pH=2.
Vacuum filtration of white precipitation provided the acid as a
white solid (5.64 g, 73.3%).
[1353] Part D: To a solution of the acid of part C (5.64 g, 10.8
mmol), N-methyl morpholine (4.8 mL, 43.1 mmol),
1-hydroxybenzotriazole (4.38 g, 32.4 mmol) and O-tetrahydropyranyl
hydroxylamine (2.5 g, 21.6 mmol) in N,N-dimethylformamide (50 mL)
was added 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (6.2 g, 32.4 mmol), and the solution was stirred at
ambient temperature for 24 hours. The solution was concentrated
under high vacuum and the residue was dissolved in ethyl acetate.
The organic layer was washed with saturated aqueous NaHCO.sub.3,
H.sub.2O and dried over MgSO.sub.4. Concentration in vacuo and
chromatography on silica eluting with ethyl acetate/hexane provided
the tetrahydropyranyl-protected hydroxamate as a white foam (6.65
g, quantitative yield).
[1354] Part E: To a solution of 4N HCl in dioxane (28 mL, 110 mmol)
was added a solution of the tetrahydropyranyl-protected hydroxamate
of part D (6.65 g, 11.03 mmol) in methanol (3 mL) and dioxane (9
mL) and was stirred at ambient temperature for 3 hours.
Concentration in vacuo and trituration with diethyl ether provided
the title compound as a white solid (4.79 g, 78.2%). Analytical
calculation for
C.sub.22H.sub.25N.sub.2O.sub.7SF.sub.3.HCl.0.5H.sub.2O: C, 46.85;
H, 4.83; N, 4.97; S, 5.69. Found: C, 46.73; H, 4.57; N, 4.82; S,
5.77.
EXAMPLE 417
Preparation of
N-hydroxy-1-(2-methoxyethyl)-4-[[4-[4-(1-methylethyl)-phenoxy]phenyl]sulf-
onyl]-4-piperidinecarboxamide, monohydrochloride
[1355] ##STR3846##
[1356] Part A: To a solution of
ethyl-4-[(4-fluorophenylsulfonyl)]-1-(2-methoxyethyl)-4-piperidinecarboxy-
late (1.47 g, 3.9 mmol) and powdered K.sub.2CO.sub.3 (1.6 g, 11.7
mmol) in N,N-dimethylformamide (15 mL) was added 4-isopropylphenol
(1.07 g, 7.8 mmol) at ambient temperature and the solution was
heated to ninety degrees Celsius for 24 hours. The solution was
concentrated under high vacuum and the residue was dissolved in
ethyl acetate. The organic layer was washed with 1N NaOH, H.sub.2O
and dried over MgSO.sub.4. Chromatography on silica eluting with
ethyl acetate/hexane provided the diaryl ether as a light yellow
gel (1.77 g, 92.2%).
[1357] Part B: To a solution of diaryl ether of part A (1.77 g, 3.6
mmol) in ethanol (3.5 mL) and tetrahydrofuran (3.5 mL) was added
NaOH (1.46 g, 36 mmol) in H.sub.2O (7 mL) at ambient temperature.
The solution was then heated to sixty degrees Celsius for 18 hours.
The solution was concentrated in vacuo and diluted with water. The
aqueous layer was extracted with diethyl ether and acidified to
pH=2. Vacuum filtration of the white precipitate provided the acid
as a white solid (1.39 g, 83.7%).
[1358] Part C: To the solution of the acid of part B (1.39 g, 3.0
mmol), N-methyl morpholine (1 mL, 9 mmol), 1-hydroxybenzotriazole
(1.22 g, 9 mmol) and O-tetrahydropyranyl hydroxylamine (0.72 g, 6.0
mmol) in N,N-dimethylformamide (90 mL) was added
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (1.72
g, 9.0 mmol), and solution was stirred at ambient temperature for
48 hours. The solution was concentrated under high vacuum and the
residue was dissolved in ethyl acetate. The organic layer was
washed with saturated aqueous NaHCO.sub.3, H.sub.2O and dried over
MgSO.sub.4. Concentration in vacuo and chromatography on silica
eluting with ethyl acetate/hexane provided the
tetrahydropyranyl-protected hydroxamate as a white foam (1.65 g,
98.2%).
[1359] Part D: To a solution of 4N HCl in dioxane (7.35 mL, 29.4
mmol) was added a solution of the tetrahydropyranyl-protected
hydroxamate of part C (1.65 g, 2.94 mmol) in methanol (1 mL) and
dioxane (3 mL), and the solution was stirred at ambient temperature
for 3 hours. Concentration in vacuo and trituration with diethyl
ether provided the title compound as a white solid (1.2 g, 79.5%).
Analytical calculation for
C.sub.24H.sub.32N.sub.2O.sub.6S.HC1.0.5H.sub.2O: C, 55.22; H, 6.56;
N, 5.37; S, 6.14. Found: C, 55.21; H, 6.41; N, 5.32; S, 6.18.
EXAMPLE 418
Preparation of N-hydroxy-1-(2-methoxyethyl)-4-[[4-[4-(trifluoro
methyl)-phenoxy]phenyl]sulfonyl}-4-piperidinecarboxamide,
monohydrochloride
[1360] ##STR3847##
[1361] Part A: To a solution of
ethyl-4-[(4-fluorophenylsulfonyl)]-1-(2-methoxyethyl)-4-piperidinecarboxy-
late (6 g, 16.0 mmol) and powdered K.sub.2CO.sub.3 (4.44 g, 32
mmol) in N,N-dimethylformamide (50 mL) was added
4-trifluoromethylphenol (5.72 g, 32 mmol) at ambient temperature,
and the solution was heated to ninety degrees Celsius for 48 hours.
The solution was concentrated under high vacuum and the residue was
dissolved in ethyl acetate. The organic layer was washed with 1N
NaOH, H.sub.2O and dried over MgSO.sub.4. Chromatography on silica
eluting with ethyl acetate/hexane provided the desired diaryl ether
as a light yellow gel (2.66 g, 32.1%).
[1362] Part B: To a solution of the diaryl ether of part A (1.5 g,
2.9 mmol) in ethanol (3 mL) and tetrahydrofuran (3 mL) was added
NaOH (1.22 g, 29 mmol) in H.sub.2O (6 mL) at ambient temperature.
The solution was then heated to sixty degrees Celsius for 18 hours.
The solution was concentrated in vacuo and diluted with water. The
aqueous layer was extracted with diethyl ether and acidified to
pH-2. Vacuum filtration of the white precipitate provided the
desired acid as a white solid (1.0 g, 70.9%).
[1363] Part C: To the solution of the acid of part B (1.0 g, 2.05
mmol), N-methyl morpholine (0.68 mL, 6.1 mmol),
1-hydroxybenzotriazole (0.84 g, 6.15 mmol) and O-tetrahydropyranyl
hydroxylamine (0.5 g, 4.1 mmol) in N,N-dimethylformamide (20 mL)
was added 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (1.18 g, 6 mmol), and solution was stirred at ambient
temperature for 24 hours. The solution was concentrated under high
vacuum and the residue was dissolved in ethyl acetate. The organic
layer was washed with saturated NaHCO.sub.3, H.sub.2O and dried
over MgSO.sub.4. Concentration in vacuo and chromatography on
silica eluting with ethyl acetate/hexane provided the
tetrahydropyranyl-protected hydroxamate as a white foam (1.16 g,
96.7%).
[1364] Part D: To a solution of 4N HCl in dioxane (5 mL, 20 mmol))
was added a solution of the tetrahydropyranyl-protected hydroxamate
of part C (1.16 g, 2 mmol) in methanol (1 mL) and dioxane (3 mL)
and was stirred at ambient temperature for 3 hours. Concentration
in vacuo and trituration with diethyl ether provided the title
compound as a white solid (0.79 g, 74.5%). Analytical calculation
for C.sub.22H.sub.25N.sub.2O.sub.6SF.sub.3.HCl: C, 49.03; H, 4.86;
N, 5.20; S, 5.95. Found: C, 48.85; H, 4.60; N, 5.22; S, 6.13.
EXAMPLE 419
Preparation of
N-hydroxy-1-(2-methoxyethyl)-4-[[4-[4-[(trifluoro-methyl)thio]phenoxy]phe-
nyl]sulfonyl]-4-piperidinecarboxamide, monohydrochloride
[1365] ##STR3848##
[1366] Part A: To a solution of
ethyl-4-[(4-fluorophenylsulfonyl)]-1-(2-methoxyethyl)-4-piperidinecarboxy-
late (5 g, 13.4 mmol) and powdered K.sub.2CO.sub.3 (3.7 g, 27 mmol)
in N,N-dimethylformamide (20 mL) was added
4-(trifluoromethylthio)phenol (3.9 g, 20 mmol) at ambient
temperature, and solution was heated to ninety degrees Celsius for
24 hours. The solution was concentrated under high vacuum, and the
residue was dissolved in ethyl acetate. The organic layer was
washed with 1N NaOH, H.sub.2O and dried over MgSO.sub.4.
Chromatography on silica eluting with ethyl acetate/hexane provided
the desired diaryl ether as a light yellow gel (5.94 g,
81.04%).
[1367] Part B: To a solution of the diaryl ether of part A (5.94 g,
210 mmol) in ethanol (10 mL) and tetrahydrofuran (10 mL) was added
NaOH (4.34 g, 108 mmol) in H.sub.2O (20 mL) dropwise at ambient
temperature. The solution was then heated to sixty degrees Celsius
for 24 hours and ambient temperature for anther 24 hours. The
solution was concentrated in vacuo and diluted with water. The
aqueous layer was extracted with diethyl ether and acidified to
pH=2. Vacuum filtration of the white precipitate provided the acid
as a white solid (5.5 g, quantitative yield).
[1368] Part C: To the solution of the acid of part B (5.5 g, 10.8
mmol), N-methyl morpholine (3.6 mL, 32.4 mmol),
1-hydroxybenzotriazole (4.4 g, 32.4 mmol) and O-tetrahydropyranyl
hydroxylamine (2.6 g, 21.8 mmol) in N,N-dimethylformamide (200 mL)
was added 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (6.2 g, 32.4 mmol), and the solution was stirred at
ambient temperature for 24 hours. The solution was concentrated
under high vacuum and the residue was dissolved in ethyl acetate.
The organic layer was washed with saturated aqueous NaHCO.sub.3,
H.sub.2O and dried over MgSO.sub.4. Concentration in vacuo and
chromatography on silica eluting with ethyl acetate/hexane provided
the tetrahydropyranyl-protected hydroxamate as a white foam (4.66
g, 69.8%).
[1369] Part D: To a solution of 4N HCl in dioxane (20 mL, 79 mmol))
was added a solution of the tetrahydropyranyl-protected hydroxamate
of part C (4.65 g, 7.9 mmol) in methanol (2.5 mL) and dioxane (8
mL) and was stirred at ambient temperature for 3 hours.
Concentration in vacuo and trituration with diethyl ether provided
the title compound as a white solid (3.95 g, 92.1%). Analytical
calculation for C.sub.22H.sub.25N.sub.2O.sub.6S.sub.2F.sub.3.HCl:
C, 46.27; H, 4.59; N, 4.91; S, 11.23. Found: C, 46.02; H, 4.68; N,
4.57; S, 11.11.
EXAMPLE 420
Preparation of
N-hydroxy-1-(1-methylethyl)-4-[[4-[4-(1-methylethyl)-phenoxy]phenyl]sulfo-
nyl]-4-piperidinecarboxamide, monohydrochloride
[1370] ##STR3849##
[1371] Part A: To a solution of the product of Example 9, Part D
(30 g, 161 mmol) in dichloromethane (40 mL) cooled to zero degrees
Celsius was added trifluroacetic acid (30 mL), and the solution was
stirred at ambient temperature for 1 hour. Concentration in vacuo
provided the trifluoroacetate salt as a light yellow gel. To the
solution of the trifluoroacetate salt and triethylamine (28 mL, 201
mmol) in dichloromethane (250 mL) cooled to zero degrees Celsius,
were added acetone (24 mL, 320 mmol) and sodium
triacetoxyborohydride (68 g, 201 mmol) in small portions followed
by addition of acetic acid (18.5 mL, 320 mmol), and solution was
stirred at ambient temperature for 48 hours. Then, the
dichloromethane was evaporated under high vacuum and the residue
was diluted with diethyl ether. The organic layer was washed with
1N NaOH, water and dried over MgSO.sub.4. Concentration in vacuo
provided the isopropyl amine as a light yellow gel (21.03 g,
72.8%).
[1372] Part B: To a solution of isopropyl amine (4 g, 11.2 mmol) of
part A and powdered K.sub.2CO.sub.3 (3.09 g, 22.4 mmol) in
N,N-dimethylformamide (30 mL) was added 4-isopropylphenol (3.05 g,
22 mmol) at ambient temperature and the solution was heated to
ninety degrees Celsius for 25 hours. The solution was concentrated
under high vacuum and the residue was dissolved in ethyl acetate.
The organic layer was washed with 1N NaOH, H.sub.2O and dried over
MgSO.sub.4. Chromatography on silica eluting with ethyl
acetate/hexane provided the desired diaryl ether as a light yellow
gel (5.10 g, 96.2%).
[1373] Part C: To a solution of the diaryl ether of part B (5.10 g,
10.77 mmol) in ethanol (10 mL) and tetrahydrofuran (10 mL) was
added NaOH (4.3 g, 108 mmol) in H.sub.2O (20 mL) from an addition
funnel at ambient temperature. The solution was then heated to
sixty degrees Celsius for 24 hours and at ambient temperature for
anther 24 hours. The solution was concentrated in vacuo and diluted
with water. The aqueous layer was extracted with diethyl ether and
acidified to pH=2. Vacuum filtration of the white precipitate
provided the desired acid as a white solid (4.80 g, quantitative
yield).
[1374] Part D: To the solution of the acid of part C (4.80 g, 10.8
mmol), N-methyl morpholine (3.6 mL, 32.4 mmol),
1-hydroxybenzotriazole (4.4 g, 32.4 mmol) and O-tetrahydropyranyl
hydroxylamine (2.6 g, 21.6 mmol) in N,N-dimethylformamide (100 mL)
was added 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (6.17 g, 32.4 mmol), and the solution was stirred at
ambient temperature for 7 days. The solution was filtered to
eliminate the unreacted starting material and the filtrate was
concentrated under high vacuum. The residue was dissolved in ethyl
acetate and the organic layer was washed with saturated aqueous
NaHCO.sub.3, H.sub.2O and dried over MgSO.sub.4. Concentration in
vacuo and chromatography on silica eluting with ethyl
acetate/hexane provided the tetrahydropyranyl-protected hydroxamate
as a white foam (2.45 g, 41.7%).
[1375] Part E: To a solution of 4N HCl in dioxane (11.2 mL, 45
mmol) was added a solution of the tetrahydropyranyl-protected
hydroxamate of part D (2.45 g, 11.03 mmol) in methanol (4 mL) and
dioxane (8 mL) and was stirred at ambient temperature for 3 hours.
Concentration in vacuo and tituration with diethyl ether provided
the title compound as a white solid (2.01 g, 89.7%). Analytical
calculation for C.sub.24H.sub.32N.sub.2O.sub.5S.HCl.0.5H.sub.2O: C,
56.96; H, 6.77; N, 5.54; S, 6.34. Found: C, 56.58; H, 6.71; N,
5.44; S, 6.25.
EXAMPLE 421
Preparation of
4-[[4-(1,3-benzodioxol-5-yloxy)phenyl]sulfonyl]-1-cyclopropyl-N-hydroxy-4-
-piperidinecarboxamide, monohydrochloride
[1376] ##STR3850##
[1377] Part A: To a solution of the product of Example 9, Part D
(9.0 g, 22.0 mmol) in DMF (30 mL) was added K.sub.2CO.sub.3 (4.55
g, 33 mmol), and sesamol (4.55 g, 33 mmol). The solution was
stirred at ninety degrees Celsius for 24 hours. The solution was
diluted with H.sub.2O (400 mL) and extracted with ethyl acetate.
The organic layer was washed with saturated NaCl and dried over
MgSO.sub.4, filtered and concentrated in vacuo. Chromatography on
silica gel eluting with 10% ethyl acetate/hexane provided the
desired ester as an oil (9.3 g, 79%). HRMS MH.sup.+ calculated for
C.sub.26H.sub.31NSO.sub.9: 534.1798, found 534.1796.
[1378] Part B: To a solution of the ester of part A (9.3 g, 17
mmol) in ethyl acetate (100 mL) cooled to zero degrees C. was
bubbled gaseous HCl for 10 minutes. The reaction was stirred at
this temperature for 0.5 hours. The solution was concentrated in
vacuo to give the hydrochloride salt (7.34 g, 92%). MS MH.sup.+
calculated for C.sub.21H.sub.23NSO.sub.7: 434.1273, found
434.1285.
[1379] Part C: To a solution of the hydrochloride salt of part B
(7.34 g, 15.6 mmol) in methanol (60 mL) was added acetic acid (8.94
mL, 156 mmol), a portion (about 2 g) of 4-.ANG. molecular sieves,
(1-ethoxycyclopropyl)-oxytrimethyl silane (18.82 mL, 93.6 mmol) and
sodium cyanoborohydride (4.41 g, 70.2 mmol). The solution was
refluxed for 8 hours. The precipitate was removed by filtration and
the filtrate concentrated in vacuo. The residue was diluted with
H.sub.2O (400 mL) and extracted with ethyl acetate. The organic
layer was washed with saturated NaCl and dried over MgSO.sub.4,
filtered and concentrated in vacuo. Chromatography on silica gel
eluting with 100% ethyl acetate) provided the desired cyclopropyl
amine as a solid (7.9 gm, 100%). MS MH.sup.+ calculated for
C.sub.24H.sub.27NSO.sub.7: 474.1586, found 474.1599.
[1380] Part D: To a solution of cyclopropyl amine from part C (7.9
g, 16.7 mmol) in ethanol (50 mL) and tetrahydrofuran (50 mL) was
added a solution of NaOH (6.68 g, 166.8 mmol) in water (30 mL) and
the solution was heated at sixty degrees Celsius for 18 hours. The
solution was concentrated in vacuo and the aqueous residue was
acidified to pH=3. The resulting precipitate was filtered to give
desired carboxylic acid (6.14 g, 76%). MS MH.sup.+ calculated for
C.sub.22H.sub.25NSO.sub.7: 446.1273. Found 446.1331.
[1381] Part E: To a solution of the carboxylic acid of part D (6.14
g, 12.7 mmol) in DMF (60 mL) was added 1-hydroxybenzotriazole (2.06
g, 15.2 mmol), N-methyl morpholine (4.2 mL, 38.0 mmol) and
O-tetrahydropyranyl hydroxylamine (2.23 g, 19.0 mmol) followed by
1,3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (3.41
g, 17.8 mmol). The solution was stirred at ambient temperature for
18 hours. The solution was diluted with H.sub.2O (400 mL) and
extracted with ethyl acetate. The organic layer was washed with
saturated NaCl and dried over MgSO.sub.4, filtered and concentrated
in vacuo. Chromatography on silica gel eluting with 40% ethyl
acetate/hexane provided the desired tetrahydropyranyl-protected
hydroxamate as a solid (6.67 g, 96%).
[1382] Part F: To a solution of tetrahydropyranyl-protected
hydroxamate of part E (6.67 g, 12.0 mmol) in dioxane (70 mL) was
added 4 N HCl/dioxane (6.6 mL). After stirring at ambient
temperature for 3 hours, the solution was concentrated in vacuo.
Chromatography on a C18 reverse phase column, eluting with
acetonitrile/(HCl)water, provided a white solid (4.21 gm, 69%). MS
MH.sup.+ calculated for C.sub.22H.sub.24N.sub.2SO.sub.7: 461.1382.
Found 461.1386.
EXAMPLE 422
Preparation of
1-cyclopropyl-4-[[4-(4-ethoxyphenoxy)phenyl]sulfonyl]-N-hydroxy-4-piperid-
inecarboxamide, monohydrochloride
[1383] ##STR3851##
[1384] Part A: To a solution of the product of Example 9, Part D
(8.0 g, 19.2 mmol) in DMF (30 mL) was added K.sub.2CO.sub.3 (4.00
g, 28.8 mmol) and 4-ethoxyphenol (3.99 g, 28.8 mmol). The solution
was stirred at ninety degrees Celsius for 24 hours. The solution
was diluted with H.sub.2O (400 mL) and extracted with ethyl
acetate. The organic layer was washed with saturated NaCl and dried
over MgSO.sub.4, filtered and concentrated in vacuo. Chromatography
on silica gel eluting with 10% ethyl acetate/hexane provided the
desired ester as an oil (9.62 g, 94%). MS MH.sup.+ calculated for
C.sub.27H.sub.35NSO.sub.8: 534.2162. Found 534.2175.
[1385] Part B: To a solution of ester of part A (9.62 g, 18 mmo) in
ethyl acetate (100 mL) cooled to zero degrees Celcius was bubbled
gaseous HCl for 5 minutes. The reaction was stirred at this
temperature for 0.5 hours. The solution was then concentrated in
vacuo to give a the hydrochloride salt (8.1 g, 96%). MS MH.sup.+
calculated for C.sub.22H.sub.27NSO.sub.6: 434.1637. Found
434.1637.
[1386] Part C: To a solution of the hydrochloride salt of part B
(8.1 g, 17.2 mmol) in methanol (70 mL) was added acetic acid (9.86
mL, 172 mmol), a portion of 4-.ANG. molecular sieves (ca. 2 g),
(1-ethoxycyclopropyl)-oxytrimethyl silane (20.7 mL, 103 mmol) and
sodium cyanoborohydride (4.86 g, 77.4 mmol). The solution was
refluxed for 8 hours. The precipitate was removed by filtration and
the filtrate was concentrated in vacuo. The residue was diluted
with H.sub.2O (400 mL) and extracted with ethyl acetate. The
organic layer was washed with 1 N NaOH, saturated NaCl and dried
over MgSO.sub.4, filtered and concentrated in vacuo. Trituration
with diethyl ether provided the desired cyclopropyl amine as a
white solid (6.84 g, 84%).
[1387] Part D: To a solution of cyclopropyl amine from part C (6.84
gm, 14.0 mmol) in ethanol (50 mL) and tetrahydrofuran (50 mL) was
added a solution of NaOH (5.60 g, 140 mmol) in water (30 mL) and
the solution was heated at sixty degrees Celsius for 18 hours. The
solution was concentrated in vacuo and the aqueous residue was
acidified to pH=3. Filtration gave the desired acid (6.07 g, 88%).
MS MH.sup.+ calculated for C.sub.22H.sub.27NSO.sub.6: 446. Found
446.
[1388] Part E: To a solution of the acid of part D (6.07 g, 12.6
mmol) in DMF (60 mL) was added 1-hydroxybenzotriazole (2.04 g, 15.1
mmol), N-methyl morpholine (4.15 mL, 37.8 mmol) and
O-tetrahydropyranyl hydroxylamine (2.21 g, 18.9 mmol) followed by
1,3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (3.38
g, 17.6 mmol). The solution was stirred at ambient temperature for
18 hours. The solution was diluted with H.sub.2O (400 mL) and
extracted with ethyl acetate. The organic layer was washed with
saturated NaCl and dried over MgSO.sub.4, filtered and concentrated
in vacuo. Chromatography on silica gel eluting with 60% ethyl
acetate/hexane provided the desired tetrahydropyranyl-protected
hydroxamate as a white foam (6.29 g, 92%). MS MH.sup.+ calculated
for C.sub.28H.sub.36N.sub.2SO.sub.7: 545.2321. Found 545.2316.
[1389] Part F: To a solution of the tetrahydropyranyl-protected
hydroxamate of part E (2.84 g, 5.0 mmol) in dioxane (40 mL) was
added 4 N HCl/dioxane (30 mL). After stirring at ambient
temperature for 2.5 hours, the solution was concentrated in vacuo.
Trituration of the resulting solid with diethyl ether and
filtration gave the desired hydroxamate as a white solid (2.33 g,
90%). MS M.sup.+ calculated for C.sub.23H.sub.28N.sub.2SO.sub.6:
460.1677. Found 460.1678.
EXAMPLE 423
Preparation of
4-[[4-(cyclohexylthio)-phenyl]sulfonyl]-N-hydroxy-1-(methylsulfonyl)-4-pi-
peridinecarboxamide
[1390] ##STR3852##
[1391] Part A: To a solution of the product of Example 9, Part D
(10.0 g, 24.0 mmol) in DMF (20 mL) was added K.sub.2CO.sub.3 (4.99
g, 36.0 mmol), cyclohexyl mercaptan (4.40 g, 36.0 mmol). The
solution was stirred at ninety degrees Celsius for 48 hrs. The
solution was diluted with H.sub.2O (400 mL) and extracted with
ethyl acetate. The organic layer was washed with saturated NaCl and
dried over MgSO.sub.4, filtered and concentrated in vacuo.
Trituration with ethanol provided the desired sulfide as a white
solid (7.16 g, 58%).
[1392] Part B: To a solution of sulfide from part B (9.46 g, 18.5
mmol) in ethanol (30 mL) and tetrahydrofuran (30 mL) was added a
solution of NaOH (7.39 g, 185 mmol) in water (15 mL) and the
solution was heated at sixty-five degrees Celsius for 18 hours. The
solution was concentrated in vacuo and the aqueous residue was
acidified to pH=3.5. The resulting white solid was collected by
filtration washed with H.sub.2O and ethyl ether to give desired
carboxylic acid (8.57 g, 95%).
[1393] Part C: To a solution of carboxylic acid of part B (8.3 g,
17.0 mmol) in ethyl acetate (200 mL) cooled to zero degrees Celsius
was bubbled gaseous HCl for 15 min. The reaction was then stirred
at this temperature for 0.5 hour. The solution was concentrated in
vacuo to afford a residue which was triturated with diethyl ether
to afford the desired hydrochloride salt as a white solid (7.03 g,
98%). MS MH+ calculated for C.sub.18H.sub.25NS.sub.2O.sub.4:
384.1303. Found 384.1318.
[1394] Part D: To a solution of the hydrochloride salt of part C
(1.0 g, 2.4 mmol) was added N-methyl morpholine (654 mL, 5.9 mmol)
followed by mesyl chloride (280 mL, 3.6 mmol) in methylene chloride
(20 mL). The solution was stirred at ambient temperature for 18
hours. The solution was diluted with H.sub.2O (400 mL) and
extracted with methylene chloride. The organic layer was washed
with water, saturated NaCl and dried over MgSO.sub.4, filtered and
concentrated in vacuo to yield the desired methanesulfomanide as a
foam (1.0 g, quantitative yield).
[1395] Part E: To a solution of the methanesulfonamide of part D
(1.3 g, 2.9 mmol) in DMF (30 mL) was added 1-hydroxybenzotriazole
(474 mg, 3.5 mmol), N-methyl morpholine (956 mL, 8.7 mmol),
tetrahydropyranyl hydroxylamine (509 mg, 4.3 mmol) followed by
1-3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (778
mg, 4.06 mmol). The solution was stirred at ambient temperature for
18 hours. The solution was diluted with H.sub.2O (400 mL) and
extracted with ethyl acetate. The organic layer was washed with
saturated NaCl and dried over MgSO.sub.4, filtered and concentrated
in vacuo. Chromatography on silica gel eluting with 30% ethyl
acetate/hexane provided the desired tetrahydropyranyl-protected
hydroxamate as a white foam (1.05 g, 82%).
[1396] Part F: To a solution of the tetrahydropyranyl-protected
hydroxamate of part E (1.05 g, 1.97 mmol) in dioxane (30 mL) was
added 4 N HCl/dioxane (10 mL). After stirring at ambient
temperature for 2.5 hours, the solution was concentrated in vacuo.
Chromatography on C18 reverse phase column eluting with
acetonitrile/(HCl) water provided a white solid (602 mg, 64%). MS
M.sup.+ for C.sub.19H.sub.28N.sub.2S.sub.3O.sub.6: 477, found
477.
EXAMPLE 424
Preparation of
N-hydroxy-1-(methylsulfonyl)-4-[[4-(phenylthio)-phenyl]sulfonyl]-4-piperi-
dinecarboxamide
[1397] ##STR3853##
[1398] Part A: To a solution of the product of Example 9, Part D
(40.0 g, 96.0 mmol) in DMF (200 mL) was added K.sub.2CO.sub.3 (20
g, 144 mmol) and thiophenol (22.2 g, 144 mmol). The solution was
stirred at ambient temperature for 24 hrs. The solution was then
diluted with H.sub.2O (1 L) and extracted with ethyl acetate. The
organic layer was washed with water, saturated NaCl and dried over
MgSO.sub.4, filtered and concentrated in vacuo. Chromatography (on
silica, elueting with 15% ethyl acetate/hexane) provided the
desired sulfide as a white solid (44.4 g, 91%).
[1399] Part B: To a solution of sulfide of part A (31.2 g, 6.6
mmol) in ethyl acetate (500 mL) cooled to zero degrees Celsius was
bubbled gaseous HCl for 30 minutes. The reaction was stirred at
this temperature for 1.5 hours. The solution was concentrated in
vacuo and resulting solid was triturated with diethyl ether to
provide the hydrochloride salt as a white solid (26.95 g, 96%).
[1400] Part C: To a solution of the hydrochloride salt of part B
(2.0 g, 4.7 mmol), were added N-methyl morpholine (1.29 mL, 11.7
mmol), followed by mesyl chloride (550 mL, 7.05 mmol) in methylene
chloride (35 mL). The solution was stirred at ambient temperature
for 48 hours. The solution was diluted with H.sub.2O (400 mL) and
extracted with methylene chloride. The organic layer was washed
with water, saturated NaCl and dried over MgSO.sub.4, filtered and
concentrated in vacuo to yield the desired methanesulfonamide as a
white solid (2.17 gm, 96%).
[1401] Part D: To a solution of the methane sulfonamide from part C
(2.1 g, 4.3 mmol) in ethanol (25 mL) and tetrahydrofuran (25 mL)
was added a solution of NaOH (1.72 g, 43 mmol) in water (10 mL) and
the solution was heated at sixty degrees Celsius for 18 hours. The
solution was concentrated in vacuo and the aqueous residue was
acidified to pH=3.5. The resulting precipitate was filtered to give
the desired carboxylic acid as a white solid (2.1 g, quantitative
yield).
[1402] Part E: To a solution of the carboxylic acid of part D (1.98
g, 4.3 mmol) in DMF (30 mL) were added 1-hydroxybenzotriazole (705
mg, 5.2 mmol), N-methyl morpholine (1.54 mL, 12.9 mmol) and
O-tetrahydropyranyl hydroxylamine hydrochloride (755 mg, 6.5 mmol)
followed by 1-3-(dimethylamino) propyl]-3-ethylcarbodiimide
hydrochloride (1.17 g, 6.1 mmol). The solution was stirred at
ambient temperature for 5 days. The solution was diluted with
H.sub.2O (400 mL) and extracted with ethyl acetate. The organic
layer was washed with saturated NaCl and dried over MgSO.sub.4,
filtered and concentrated in vacuo. Chromatography on C18 reverse
phase column, eluting with acetonitrile/(HCl) water provided the
desired tetrahydropyranyl-protected hydroxamate as a white solid
(1.86 g, 80%). HRMS MH.sup.+ calculated for
C.sub.24H.sub.30N.sub.2S.sub.3O.sub.7: 555.1293, found
555.1276.
[1403] Part F: To a solution of tetrahydropyranyl-protected
hydroxamate of part E (1.86 g, 3.5 mmol) in dioxane (30 mL) and
methanol (10 mL) was added 4 N HCl/dioxane (20 mL). After stirring
at ambient temperature for 2.5 hours, the solution was concentrated
in vacuo. Chromatography on a C18 reverse phase column eluting with
acetonitrile/(HCl) water provided the title compound as a white
solid (1.48 gm, 91%). HRMS MH.sup.+ calculated for
C.sub.19H.sub.22N.sub.2S.sub.3O.sub.6: 471.0718 Found 471.0728.
EXAMPLE 425
Preparation of
1-cyclopropyl-N-hydroxy-4-[[4-[4-(trifluoromethoxy)phenoxy]-phenyl]sulfon-
yl]-4-piperidine-carboxamide, monohydrochloride
[1404] ##STR3854##
[1405] Part A: To a solution of the product of Example 398, Part A
(6.97 g, 19.6 mmol) in DMF (500 mL) was added K.sub.2CO.sub.3 (3.42
g, 18.0 mmol) and 4-(triflouromethoxy)-phenol (3.7 g, 24.8 mmol).
The solution was stirred at ninety degrees Celsius for 40 hours.
The solution was diluted with H.sub.2O (600 mL) and extracted with
ethyl acetate. The organic layer was washed with water, saturated
NaCl and dried over MgSO.sub.4, filtered and concentrated in vacuo
to afford the desired diaryl ether as an oil (8.5 g, quantitative).
HRMS MH.sup.+ calculated for C.sub.24H.sub.26NSO.sub.6F.sub.3:
514.1511. Found 514.1524.
[1406] Part B: To a solution of diaryl ether from part A (8.4 g,
16.4 mmol) in ethanol (50 mL) and tetrahydrofuran (50 mL) was added
a solution of NaOH (6.54 g, 164 mmol) in water (20 mL) and the
solution was heated at sixty degrees Celsius for 18 hours. The
solution was concentrated in vacuo to remove most of organic
solvents and the aqueous residue was acidified to pH=4.0. The
resulting precipitate was filtered to give the desired filtered to
give the hydrochloride salt as a white solid (5.01 g, 63%). HRMS
MH.sup.+ calculated for C.sub.22H.sub.22NSO.sub.6F.sub.3: 486.1198,
found 486.1200.
[1407] Part C: To a solution of the hydrochloride salt of part B
(5.0 g, 10.3 mmol) in DMF (80 mL) were added 1-hydroxybenzotriazole
(1.65 g, 12.3 mmol), N-methyl morpholine (3.4 mL, 30.9 mmol) and
O-tetrahydropyranyl hydroxylamine hydrochloride (1.8 g, 15.4 mmol)
followed by 1-3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (1.60 g, 12.3 mmol). The solution was stirred at
ambient temperature for 42 hours. The solution was diluted with
H.sub.2O (400 mL) and extracted with ethyl acetate. The organic
layer was washed with saturated NaCl and dried over MgSO.sub.4,
filtered and concentrated in vacuo. Chromatography on silica gel,
eluting with 30% ethyl acetate/hexane provided the desired
tetrahydropyranyl-protected hydroxamate as a white solid (5.41 g,
89%).
[1408] Part D: To a solution of tetrahydropyranyl-protected
hydroxamate of part C (5.4 g, 9.2 mmol) in dioxane (80 mL) and
methanol (20 mL) was added 4 N HCl/dioxane (50 mL). The reaction
was stirred at ambient temperature for 2.5 hours, the solution was
concentrated in vacuo. Trituration with diethyl ether afforded the
title compound as a white solid (4.02 g, 81%). HRMS MH.sup.+
calculated for C.sub.22H.sub.23N.sub.2SO.sub.6F.sub.3: 501.1307,
found 501.1324.
EXAMPLE 426
Preparation of 1-cyclopropyl-4-[(4-ethoxyphenyl)
sulfonyl]-N-hydroxy-4-piperidinecarboxamide, monohydrochloride
[1409] ##STR3855##
[1410] Part A: To a solution of the product of Example 398, Part A
(5.87 g, 16.5 mmol) in DMF (50 mL) was added K.sub.2CO.sub.3 (3.42
g, 24.7 mmol) and
.alpha.,.alpha.,.alpha.-(trifluoromethyl)-p-cresol (4.01 g, 24.7
mmol). The solution was stirred at ninety degrees Celsius for 48
hours. The solution was diluted with H.sub.2O (400 mL) and
extracted with ethyl acetate. The organic layer was washed with
water, saturated NaCl and dried over MgSO.sub.4, filtered and
concentrated in vacuo to give the crude product, containing a large
percentage of starting material (8.39 g). To this material (8.39 g)
in ethanol (50 mL) and tetrahydrofuran (50 mL) was added a solution
of NaOH (6.75 g, 169 mmol) in water (20 mL) and the solution was
heated at sixty degrees Celsius for 18 hours. The solution was
concentrated in vacuo and the aqueous residue was acidified to
pH=3.5. The resulting precipitate was filtered to give the desired
hydrochloride salt as a waxy solid (5.04 g, 64%).
[1411] Part B: To a solution of the hydrochloride salt of part A
(5.0 g, 10.3 mmol) in DMF (80 mL) were added 1-hydroxybenzotriazole
(1.73 g, 12.8 mmol), N-methyl morpholine (3.5 mL, 31.8 mmol) and
O-tetrahydropyranyl hydroxylamine hydrochloride (1.86 g, 15.9 mmol)
followed by 1-3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (2.84 g, 14.8 mmol). The solution was stirred at
ambient temperature for 18 hours. The solution was diluted with
H.sub.2O (400 mL) and extracted with ethyl acetate. The organic
layer was washed with saturated NaCl and dried over MgSO.sub.4,
filtered and concentrated in vacuo. Chromatography on silica gel
eluting with 30% ethyl acetate/hexane provided the desired
tetrahydropyranyl-protected hydroxamate as a white solid (1.5 g,
32%).
[1412] Part C: To a solution of tetrahydropyranyl-protected
hydroxamate of part D (1.5 g, 3.3 mmol) in dioxane (30 mL) and
methanol (15 mL) was added 4 N HCl/dioxane (50 mL). The reaction
was stirred at ambient temperature for 2 hours, then the solution
was concentrated in vacuo. Trituration of the residue with diethyl
ether afforded the title compound as a white solid (1.09 g, 816).
MS MH.sup.+ for C.sub.17H.sub.24N.sub.2SO.sub.5: 369 found 369.
EXAMPLE 427
Preparation of 1-cyclopropyl-N-hydroxy-4-[[4-[4-(trifluoromethyl)
phenoxy]phenyl]sulfonyl]-4-piperidinecarboxamide,
monohydrochloride
[1413] ##STR3856##
[1414] Part A: To a solution of the product of Example 398, Part A
(5.96 g, 15.0 mmol) in DMF (100 mL) was added K.sub.2CO.sub.3
(12.34 g, 38.0 mmol) and .alpha., .alpha., .alpha.-trifluoromethyl
phenol (3.65 g, 22.5 mmol). The solution was stirred ninety degrees
Celsius for 28 hours. The solution was diluted with H.sub.2O (400
mL) and extracted with ethyl acetate. The organic layer was washed
with water, saturated NaCl and dried over MgSO.sub.4, filtered and
concentrated in vacuo to afford desired aryl ether as an oil (7.54
g, quantitative).
[1415] Part B: To a solution of aryl ether from part A (7.54 g,
15.0 mmol) in ethanol (40 mL) and tetrahydrofuran (40 mL) was added
a solution of NaOH (6.06 g, 151.0 mmol) in water (20 mL) and the
solution was heated at sixty degrees Celsius for 18 hours. The
solution was concentrated in vacuo and the aqueous residue was
acidified to pH=2.0. The resulting precipitate was filtered to give
the desired hydrochloride salt as a white solid (7.98 g,
quantitative). MS MH.sup.+ calculated for
C.sub.22H.sub.22NSO.sub.5F.sub.3: 470, found 470.
[1416] Part C: To a solution of the hydrochloride salt of part B
(7.60 g, 15.0 mmol) in DMF (100 mL) were added
1-hydroxybenzotriazole (2.44 g, 18.0 mmol), N-methyl morpholine
(3.4 mL, 30.9 mmol) and O-tetrahydropyranyl hydroxylamine
hydrochloride (2.63 g, 22.5 mmol) followed by
1-3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (4.02
g, 21.0 mmol). The solution was stirred at ambient temperature for
96 hours. The solution was diluted with H.sub.2O (400 mL) and
extracted with ethyl acetate. The organic layer was washed with
saturated NaCl and dried over MgSO.sub.4, filtered and concentrated
in vacuo. Chromatography on silica eluting with 30% ethyl
acetate/hexane provided the desired tetrahydropyranyl-protected
hydroxamate as a white solid (5.93 g, 69%).
[1417] Part D: To a solution of tetrahydropyranyl-protected
hydroxamate of part C (3.8 g, 6.7 mmol) in dioxane (100 mL) was
added 4 N HCl/dioxane (30 mL). The reaction was stirred at ambient
temperature for 2 hours, then the solution was concentrated in
vacuo. Trituration with diethyl ether afforded the title compound
as a white solid (3.33 g, 96%). MS MH.sup.+ calculated for
C.sub.22H.sub.23N.sub.2SO.sub.5F.sub.3: 485, found 485.
EXAMPLE 428
Preparation of
N-hydroxy-1-(1-methylethyl)-4-[[4-[4-(trifluoromethyl)-phenoxy]phenyl]sul-
fonyl]-4-piperidinecarboxamide, monohydrochloride
[1418] ##STR3857##
[1419] Part A: To a solution of the product of Example 9, Part D
(30.0 g, 80.8 mmol) in methylene chloride (100 mL), was added
trifluoroacetic acid (30 mL) in methylene chloride (40 mL). The
solution was stirred at ambient temperature for two hours. The
solution was concentrated in vacuo. To the residue dissolved in
methylene chloride (150 mL) at zero degrees Celsius were added
triethylamine (28.0 mL, 277 mmol), acetone (24.0 mL, 413 mmol),
sodium cyanoborohydride (68 g, 323.1 mmol) and acetic acid (18.5
mL, 308 mmol). The reaction mixture was stirred at ambient
temperature for 18 hours. The solution was diluted with 1N NaOH and
extracted with ethyl ether. The organic layer was washed with 1N
NaOH, water, saturated NaCl and dried over MgSO.sub.4, filtered and
concentrated in vacuo to provided the desired isopropylamine (21.03
g, 72%).
[1420] Part B: To a solution of the isopropylamine of part A (4.04
g, 11.0 mmol) in DMF (50 mL) was added CsCO.sub.3 (10.75 g, 33.3
mmol) and .alpha.,.alpha.,.alpha.-trifluoro-p-cresol (2.67 g, 16.5
mmol). The solution was stirred at ninety degrees Celsius for 40
hours. The solution was diluted with H.sub.2O (400 mL) and
extracted with ethyl acetate. The organic layer was washed with
water, saturated NaCl and dried over MgSO.sub.4, filtered and
concentrated in vacuo. Chromatography on silica gel, eluting with
30% ethyl acetate/hexane, provided the desired diaryl ether as an
oil (5.35 g, 97%). HRMS MH.sup.+ calculated for
C.sub.24H.sub.28NSO.sub.5F.sub.3: 500.1640, found: 500.1678.
[1421] Part C: To a solution of the diaryl ether from part B (5.3
g, 10.6 mmol) in ethanol (50 mL) and tetrahydrofuran (50 mL) was
added a solution of NaOH (4.2 g, 106.0 mmol) in water (25 mL) and
the solution was heated at sixty degrees Celsius for 18 hours. The
solution was concentrated in vacuo and the aqueous residue was
acidified to pH=3.0. The resulting precipitate was filtered to give
the desired hydrochloride salt as a white solid (5.38 g,
quantitative). MS MH.sup.+ calculated for
C.sub.22H.sub.24NSO.sub.5F.sub.3: 472.1406, found 471.472.1407.
[1422] Part D: To a solution of the hydrochloride salt of part C
(5.4 g, 10.6 mmol) in DMF (90 mL) were added 1-hydroxybenzotriazole
(1.72 g, 12.3 mmol), N-methyl morpholine (3.5 mL, 32.0 mmol) and
O-tetrahydropyranyl hydroxylamine hydrochloride (1.87 g, 15.9 mmol)
followed by 1-3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (2.8 g, 15.0 mmol). The solution was stirred at
ambient temperature for 144 hours. The solution was diluted with
H.sub.2O (400 mL) and extracted with ethyl acetate. The organic
layer was washed with saturated NaCl and dried over MgSO.sub.4,
filtered and concentrated in vacuo. Chromatography on silica gel,
eluting with 2% methanol/ethyl acetate, provided the desired
tetrahydropyranyl-protected hydroxamate as a white solid (2.74 g,
45%). HRMS MH.sup.+ calculated for
C.sub.27H.sub.33N.sub.2SO.sub.5F.sub.3: 571.2090, found
571.2103.
[1423] Part E: To a solution of tetrahydropyranyl-protected
hydroxamate of part D (2.7 g, 4.7 mmol) in dioxane (50 mL) was
added 4 N HCl/dioxane (20 mL). The reaction was stirred at ambient
temperature for 2 hours. Filtration afforded the title compound as
a white solid (2.08 g, 84%). MS MH.sup.+ calculated for
C.sub.22H.sub.25N.sub.2SO.sub.5F.sub.3: 487, found 487.
EXAMPLE 429
Preparation of
1-ethyl-N-hydroxy-4-[[4-[4-(trifluoromethyl)phenoxy]phenyl]-sulfonyl]-4-p-
iperidinecarboxamide, monohydrochloride
[1424] ##STR3858##
[1425] Part A: To a solution of the product of Example 9, Part D
(48 g, 115.0 mmol) in ethyl acetate (750 mL) cooled to zero degrees
Celsius was bubbled gaseous HCl for 45 minutes, and stirred at that
temperature for 7 hours. The solution was concentrated in vacuo to
afford a residue that was triturated with diethyl ether to afford
the desired hydrochloride salt as a white solid (32.76 g, 81%).
[1426] Part B: To a solution of hydrochloride salt of part A (15.8
g, 45.0 mmol) in DMF (75 mL) was added K.sub.2CO.sub.3 (12.4 g,
90.0 mmol) and bromoethane (3.4 mL, 45.0 mmol). The solution was
stirred at ambient temperature for 18 hours. The solution was
diluted with H.sub.2O (200 mL) and extracted with ethyl acetate.
The organic layer was washed with water, saturated NaCl and dried
over MgSO.sub.4, filtered and concentrated in vacuo to provide the
desired ethyl amine as an oil (15.4 g, quantitative).
[1427] Part C: To a solution of ethyl amine of part B (5.2 g, 15.0
mmol) in DMF (50 mL) was added CsCO.sub.3 (12.21 g, 37.5 mmol) and
.alpha.,.alpha.,.alpha.-trifluoro-p-cresol (3.65 g, 23.0 mmol). The
solution was stirred ninety degrees Celsius for 25 hours. The
solution was diluted with H.sub.2O (400 mL) and extracted with
ethyl acetate. The organic layer was washed with water, saturated
NaCl and dried over MgSO.sub.4, filtered and concentrated in vacuo.
Chromatography on silica gel, eluting with 20% ethyl
acetate/hexane, provided the desired diaryl ether as an oil (7.3 g,
quantitative yield).
[1428] Part D: To a solution of diaryl ether from part C (7.3 g,
15.0 mmol) in ethanol (40 mL) and tetrahydrofuran (40 mL) was added
a solution of NaOH (6.0 g, 150 mmol) in water (30 mL), and the
solution was heated at sixty degrees Celsius for 16 hours. The
solution was concentrated in vacuo and the aqueous residue was
acidified to pH=4.0. The resulting precipitate was filtered to give
the desired hydrochloride salt as a white solid (5.96 g, 80%). HRMS
MH.sup.+ calculated for C.sub.21H.sub.22NSO.sub.5F.sub.3: 458.1249,
found 458.1260.
[1429] Part E: To a solution of the hydrochloride salt of part D
(5.96 g, 12.0 mmol) in DMF (80 mL) were added
1-hydroxybenzotriazole (1.96 g, 14.0 mmol), N-methyl morpholine
(3.9 mL, 36.0 mmol) and O-tetrahydropyranyl hydroxylamine
hydrochloride (2.11 g, 18.0 mmol) followed by
1-3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (3.24
g, 17.0 mmol). The solution was stirred at ambient temperature for
168 hours. The insoluble material was removed by filtration and the
filtrate was diluted with H.sub.2O (400 mL) and extracted with
ethyl acetate. The organic layer was washed with saturated NaCl and
dried over MgSO.sub.4, filtered and concentrated in vacuo.
Chromatography on silica gel eluting with 70% ethyl acetate/hexane
provided the desired tetrahydropyranyl-protected hydroxamate as a
white solid (2.80 g, 41%).
[1430] Part F: To a solution of tetrahydropyranyl-protected
hydroxamate of part E (2.8 g, 5.0 mmol) in dioxane (80 mL) was
added 4 N HCl/dioxane (20 mL). The reaction was stirred at ambient
temperature for 5 hours, and the solution was concentrated in
vacuo. Trituration with diethyl ether afforded the title compound
as a white solid (2.08 g, 84%). MS MH.sup.+ calculated for
C.sub.21H.sub.23N.sub.2SO.sub.5F.sub.3: 473, found 473.
EXAMPLE 430
Preparation of
1-ethyl-N-hydroxy-4-[[4-[4-(1-methylethyl)phenoxy]phenyl]-sulfonyl]-4-pip-
eridinecarboxamide, monohydrochloride
[1431] ##STR3859##
[1432] Part A: To a solution of the product of Example 9, Part D
(48 g, 115.0 mmol) in ethyl acetate (750 mL) cooled to zero degrees
Celsius was bubbled gaseous HCl for 45 minutes. The reaction was
stirred at this temperature for 7 hours. The solution was
concentrated in vacuo to afford a residue which was triturated with
diethyl ether to afford the desired hydrochloride salt as a white
solid (32.8 g, 81%).
[1433] Part B: To a solution of the hydrochloride salt of part A
(15.8 g, 45.0 mmol) in DMF (75 mL) was added K.sub.2CO.sub.3 (12.4
g, 90.0 mmol) and bromoethane (3.4 mL, 45.0 mmol). The solution was
stirred at ambient temperature for 18 hours. The solution was
diluted with H.sub.2O (200 mL) and extracted with ethyl acetate.
The organic layer was washed with water, saturated NaCl and dried
over MgSO.sub.4, filtered and concentrated in vacuo to afford the
desired ethyl amine as an oil (15.4 g, quantitative).
[1434] Part C: To a solution of ethyl amine of part B (5.2 g, 15.0
mmol) in DMF (50 mL) was added CsCO.sub.3 (12.2 g, 37.5 mmol) and
4-isopropylphenol (3.15 g, 23.0 mmol). The solution was stirred at
ninety degrees Celsius for 5 hours. The solution was diluted with
H.sub.2O (400 mL) and extracted with ethyl acetate. The organic
layer was washed with water, saturated NaCl and dried over
MgSO.sub.4, filtered and concentrated in vacuo. Chromatography on
silica gel eluting with 20% ethyl acetate/hexane provided the
desired diaryl ether as an oil (6.2 g, 95%). HRMS MH.sup.+
calculated for C.sub.25H.sub.33N.sub.3SO.sub.5: 460.2158, found:
460.2160.
[1435] Part D: To a solution of diaryl ether from part C (6.2 g,
13.0 mmol) in ethanol (40 mL) and tetrahydrofuran (40 mL) was added
a solution of NaOH (5.2 g, 130 mmol) in water (30 mL) and the
solution was heated at sixty degrees Celsius for 16 hours. The
solution was concentrated in vacuo and the aqueous residue was
acidified to pH=4.0. The resulting precipitate was filtered and
washed with H.sub.2O and diethyl ether to give desired
hydrochloride salt (6.0 g, quantitative). HRMS MH.sup.+ calculated
for C.sub.23H.sub.29NSO.sub.5: 432.1845, found 432.1859.
[1436] Part E: To a solution of the hydrochloride salt of part D
(6.08 g, 13.0 mmol) in DMF (80 mL) were added
1-hydroxybenzotriazole (2.11 g, 15.6 mmol), N-methyl morpholine
(4.3 mL, 39.0 mmol) and O-tetrahydropyranyl hydroxylamine
hydrochloride (2.28 g, 19.5 mmol) followed by
1-3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (3.49
g, 18.2 mmol). The solution was stirred at ambient temperature for
168 hours. Insoluble material was removed by filtration and the
filtrate was diluted with H.sub.2O (400 mL) and extracted with
ethyl acetate. The organic layer was washed with saturated NaCl and
dried over MgSO.sub.4, filtered and concentrated in vacuo.
Chromatography on silica gel eluting with 50% ethyl acetate/hexane
provided the desired tetrahydropyranyl-protected hydroxamate as a
white solid (1.7 g, 25%). HRMS MH.sup.+ calculated for
C.sub.28H.sub.38N.sub.2SO.sub.6: 531.2529, found 531.2537.
[1437] Part F: To a solution of tetrahydropyranyl-protected
hydroxamate of part E (1.7 g, 3.0 mmol) in dioxane (60 mL) was
added 4 N HCl/dioxane (10 mL). The reaction was stirred at ambient
temperature for 4 hours, and the solution was concentrated in
vacuo. Chromatography on C18 reverse phase column eluting with
acetonitrile/(HCl)water provided the title compound as a white
solid (860 mg, 596). HRMS MH.sup.+ calculated for
C.sub.23H.sub.30N.sub.2SO.sub.5: 447.1954, found 447. 1972.
EXAMPLE 431
Preparation of
1-cyclopropyl-N-hydroxy-4-[[4-[4-(1-methylethyl)phenoxy]phenyl]-sulfonyl]-
-4-piperidine-carboxamide, monohydrochloride
[1438] ##STR3860##
[1439] Part A: To a solution of the product of Example 398, Part A
(4.0 g, 10.2 mmol) in DMF (40 mL) was added K.sub.2CO.sub.3 (12.46
g, 38.0 mmol) and 4-isopropylphenol (4.99 g, 15.3 mmol). The
solution was stirred at ninety degrees Celsius for 24 hours. The
solution was diluted with H.sub.2O (400 mL) and extracted with
ethyl acetate. The organic layer was washed with water, saturated
NaCl and dried over MgSO.sub.4, filtered and concentrated in vacuo.
Chromatography on silica eluting with 30% ethyl acetate/hexane
provided the desired diaryl ether as a white solid (3.89 g, 76%).
HRMS MH.sup.+ calculated for C.sub.26H.sub.33NSO.sub.5: 472.2158,
found: 472.2171.
[1440] Part B: To a solution of diaryl ether from part A (3.89 g,
8.20 mmol) in ethanol (40 mL) and tetrahydrofuran (40 mL) was added
a solution of NaOH (3.30 g, 82.5 mmol) in water (25 mL) and the
solution was heated at sixty degrees Celsius for 18 hours. The
solution was concentrated in vacuo to remove most of the organic
solvents and the aqueous residue was acidified to pH=3.0. The
resulting precipitate was filtered and washed with H.sub.2O and
ethyl ether to give desired hydrochloride salt (7.98 g,
quantitative) as a white solid. MS MH.sup.+ calculated for
C.sub.24H.sub.29NSO.sub.5: 444, found: 444.
[1441] Part C: To a solution of the hydrochloride salt of part B
(3.6 g, 7.0 mmol) in DMF (70 mL) were added 1-hydroxybenzotriazole
(1.22 g, 9.0 mmol), N-methyl morpholine (2.3 mL, 21.0 mmol) and
O-tetrahydropyranyl hydroxylamine hydrochloride (1.23 g, 10.5 mmol)
followed by 1-3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (2.01 g, 10.4 mmol). The solution was stirred at
ambient temperature for 15 days. The solution was diluted with
H.sub.2O (400 mL) and extracted with ethyl acetate. The organic
layer was washed with saturated NaCl and dried over MgSO.sub.4,
filtered and concentrated in vacuo. Chromatography on silica gel,
eluting with 15% ethyl acetate/hexane, provided the desired
tetrahydropyranyl-protected hydroxamate as a white solid (3.51 g,
92%). HRMS MH.sup.+ calculated for C.sub.29H.sub.38N.sub.2SO.sub.6:
543.2529, found 543.2539.
[1442] Part D: To a solution of tetrahydropyranyl-protected
hydroxamate of part C (3.51 g, 6.0 mmol) in methanol (10 mL) and
dioxane (200 mL) was added 4 N HCl/dioxane (30 mL). After stirring
at ambient temperature for 2.5 hours, the solution was concentrated
in vacuo. Trituration with diethyl ether afforded the title
compound as a white solid (2.56 g, 86%). MS MH.sup.+ calculated for
C.sub.24H.sub.30N.sub.2SO.sub.5; 459.1875, found 459.1978.
EXAMPLE 432
Preparation of
N-hydroxy-4-[[4-[4-(1-methylethoxy)phenoxy]phenyl]sulfonyl]-1-(1-methylet-
hyl)-4-piperidinecarboxamide, monohydrochloride
[1443] ##STR3861##
[1444] Part A: To a solution of
ethyl-4-[(4-fluorophenylsulfonyl)]-1-(1-methylethyl)-4-piperidinecarboxyl-
ate (2.0 g, 5.4 mmol) in N,N-dimethylformamide (10 mL) was added
4-isopropyloxyphenol, which may be prepared according to the
procedure of J. Indian Chem. Soc., 73, 1996, 507-511, (1.63 g, 10.7
mmol) and cesium carbonate (7 g, 21.5 mmol) and the resulting
suspension was heated at 60 degrees Celsius for 16 hours. The
reaction mixture was then concentrated in vacuo. The residue was
dissolved in ethyl acetate and washed with 1 N sodium hydroxide,
water and brine and dried over magnesium sulfate. Concentration of
the organic phase gave a residue which was purified by
chromatography on silica gel eluting with ethyl acetate/hexane to
afford the desired aryl ether (1.06 g, 39%).
[1445] Part B: To a solution of the aryl ether (1.06 g, 2.1 mmol)
in ethanol (20 mL) and water (20 mL) was added sodium hydroxide
(0.84 g, 21 mmol) and the mixture was heated to 65 degrees Celsius
for 16 hours. The solvents were then removed in vacuo. Water (50
mL) was added and the mixture was again concentrated in vacuo and
the resulting mixture was acidified with 2 N HCl to pH=4-5. The
solid precipitate was collected by filtration and rinsed with
diethyl ether to afford the desired carboxylic acid (3.13 g,
100%).
[1446] Part C: A solution of the carboxylic acid of part B (1.0 g,
2.0 mmol) in thionyl chloride (5 mL) was refluxed for 2 hours. The
solvent was removed in vacuo. To the resulting residue in DMF (10
mL) was added N-methyl morpholine (0.66 mL, 6.0 mmol)) and
O-tetrahydropyranyl hydroxylamine hydrochloride (351 mg, 3.0 mmol).
The solution was stirred at ambient temperature for 18 hours. The
suspension was filtered and the filtrate was diluted with H.sub.2O
(400 mL) and extracted with ethyl acetate. The organic layer was
washed with saturated NaCl and dried over MgSO.sub.4, filtered and
concentrated in vacuo. Chromatography on silica gel eluting with
90% ethyl acetate/hexane provided the desired
tetrahydropyran-protected hydroxamate as a white solid (280 mg,
23%). HRMS MH.sup.+ calculated for C.sub.29H.sub.40N.sub.2SO.sub.7:
561.2634, found 561.2653.
[1447] Part D: To a solution of tetrahydropyranyl-protected
hydroxamate of part C (275 mg, 0.48 mmol) in dioxane (15 mL) was
added 4 N HCl/dioxane (5 mL). After stirring at ambient temperature
for 2 hours, the solution was concentrated in vacuo. Trituration
with diethyl ether and filtration of the resulting solid gave the
title compound as a white solid (193 mg, 76%). MS MH.sup.+
calculated for C.sub.24H.sub.32N.sub.2SO.sub.6: 477, found 477.
EXAMPLE 433
Preparation of
4-[[4-[(2-fluorophenyl)-thio]phenyl]sulfonyl]-N-hydroxy-4-piperidinecarbo-
xamide, monohydrochloride
[1448] ##STR3862##
[1449] Part A: To a solution of the product of Example 9, Part D
(6.0 g, 14.4 mmol) in N,N-dimethylformamide (30 mL) were added
2-fluorothiophenol (2.22 g, 17.3 mmol) and potassium carbonate
(2.40 g, 17.3 mmol), and the resulting suspension was stirred at
ambient temperature for 48 hours. The reaction mixture was then
diluted with ethyl acetate (200 mL) and washed with 1 N sodium
hydroxide (200 mL) and brine (3.times.). Concentration of the
organic phase afforded a residue that was purified by
chromatography on silica gel, eluting with ethyl acetate/hexane
(1:4), to afford the desired aryl sulfide (8.0 grams, 100%) as a
white solid.
[1450] Part B: To a solution of the ethyl ester of part A (8.0 g,
15 mmol) in ethanol (90 mL) and water (20 mL) was added sodium
hydroxide (6.1 g, 152 mmol), and the mixture was heated to 65
degrees Celsius for 16 hours. Volatile organics were removed in
vacuo and the resulting aqueous mixture was acidified with 2 N HCl
to pH=3-4. Solid sodium chloride was added and the mixture was
extracted with ethyl acetate. The combined organic extracts were
washed with brine and dried with magnesium sulfate. Removal of the
solvent afforded the desired carboxylic acid (4.92 g, 68%).
[1451] Part C: To a solution of the carboxylic acid of part B (4.92
g, 9.93 mmol) in N,N-dimethylformamide (100 mL) were added
4-methylmorpholine (1.52 g, 15.0 mmol), N-hydroxybenzotriazole
(1.62 g, 12.0 mmol) and
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (2.70
g, 14.1 mmol), followed by
O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (2.24 g, 15.0 mmol).
After stirring for 16 hours at ambient temperature, the reaction
mixture was concentrated to a residue that was dissolved in ethyl
acetate (200 mL) and washed with water and brine. Concentration and
purification by chromatography on silica gel afforded the protected
hydroxamate derivative (4.9 mg, 83%).
[1452] Part D: Hydrogen chloride gas was bubbled for 10 minutes
through an ice bath-cooled solution of the protected hydroxamate of
part C (4.9 g, 8.24 mmol) in ethyl acetate (30 mL). The mixture was
then allowed to stand at ambient temperature for 2 hours, after
which time the solvent was removed in vacuo. Fresh ethyl acetate
(30 mL) was added and then removed in vacuo, and this procedure was
repeated. Ethyl acetate (50 mL) was then added and the solid was
collected by filtration to afford a solid that was purified by
reverse-phase chromatography, eluting with acetonitrile/water
(gradient of 20/80 up to 100% acetonitrile), to afford the title
compound (1.9 g, 43%). Analytical calculation for
C.sub.18H.sub.19FN.sub.2O.sub.4S.sub.2.HCl: C, 48.37; H, 4.51; N,
6.27; Cl, 7.93. Found: C, 48.14; H, 4.33; N, 6.21; Cl, 8.64. HRMS
(ESI) MH.sup.+ calculated for
C.sub.18H.sub.19FN.sub.2O.sub.4S.sub.2: 411.0849, found
411.0844.
EXAMPLE 434
Preparation of
4-[[4-[(2-fluorophenyl)-thio]phenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)-4--
piperidinecarboxamide, monohydrochloride
[1453] ##STR3863##
[1454] Part A: To a solution of the product of Example 9, Part F
(4.46 g, 12.6 mmol) in N,N-dimethylformamide (30 mL) were added
2-fluorothiophenol (1.94 g, 15.1 mmol) and potassium carbonate
(2.09 g, 15.1 mmol), and the resulting suspension was stirred at
ambient temperature for 48 hours. The reaction mixture was then
diluted with ethyl acetate (200 mL) and washed with 1 N sodium
hydroxide (200 mL) and brine (3.times.). Concentration of the
organic phase afforded the desired aryl sulfide (5.2 grams,
90%).
[1455] Part B: To a solution of the ethyl ester of part A (5.1 g,
11.4 mmol) in ethanol (90 mL) and water (30 mL) was added sodium
hydroxide (5.0 g, 125 mmol), and the mixture was heated to 65
degrees Celsius for 16 hours. Organics were removed in vacuo and
the resulting aqueous mixture was acidified with 2 N HCl to pH=3-4.
Solid sodium chloride was added and the mixture was extracted with
ethyl acetate. The combined organic extracts were washed with brine
and dried with magnesium sulfate. Removal of the solvent afforded
the desired carboxylic acid (4.5 g, 94%).
[1456] Part C: To a solution of the carboxylic acid of part B (4.5
g, 11.0 mmol) in N,N-dimethylformamide (50 mL) were added
4-methylmorpholine (1.62 g, 16.0 mmol), N-hydroxybenzotriazole
(1.73 g, 12.8 mmol), and
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (2.87
g, 14.9 mmol) followed by O-(tetrahydro-2H-pyran-2-yl)hydroxylamine
(2.39 g, 16.0 mmol). After stirring for 16 hours at ambient
temperature, the reaction mixture was concentrated to a residue
that was dissolved in ethyl acetate (200 mL) and washed with water
and brine. Concentration and purification by chromatography on
silica gel afforded the protected hydroxamate derivative that was
used directly in the next step.
[1457] Part D: Hydrogen chloride gas was bubbled for 10 minutes
through an ice bath-cooled solution of the protected hydroxamate of
part C in ethyl acetate (30 mL). The mixture was then allowed to
stand at ambient temperature for 2 hours after which time the
solvent was removed in vacuo. Fresh ethyl acetate (30 mL) was added
and then removed in vacuo, and this procedure was repeated. Ethyl
acetate (50 mL) was then added and the solid was collected by
filtration to afford a solid which was purified by reverse-phase
chromatography eluting with acetonitrile/water (gradient of 20/80
up to 100% acetonitrile) to afford the title compound (1.85 g, 35%
for parts C and D). HRMS (ESI) MH.sup.+ calculated for
C.sub.21H.sub.21FN.sub.2O.sub.4S.sub.2: 449.1005, found
449.1023.
EXAMPLE 435
Preparation of
4-[[4-(4-ethoxyphenoxy)-phenyl]sulfonyl]-N-hydroxy-1-(2-propynyl)-4-piper-
idinecarboxamide, monohydrochloride
[1458] ##STR3864##
[1459] Part A: To a solution of the product of Example 9, Part F
(8.00 g, 22.6 mmol) in N,N-dimethylformamide (50 mL) were added
4-ethoxyphenol (9.38 g, 70 mmol) and cesium carbonate (22.8 g, 70
mmol), and the resulting suspension was heated at 75 degrees
Celsius for 20 hours. The reaction mixture was then diluted with
ethyl acetate (1000 mL) and washed with 1 N sodium hydroxide, water
and brine. Concentration of the organic phase gave a residue that
was purified by chromatography on silica gel, eluting with ethyl
acetate/hexane (1:2), to afford the desired diaryl ether (10.5
grams, 99%).
[1460] Part B: To a solution of the ethyl ester of part A (10.5 g,
22.3 mmol) in ethanol (70 mL) and water (60 mL) was added sodium
hydroxide (8.9 g, 222 mmol), and the mixture was heated to 65
degrees Celsius for 16 hours. Volatile organics were removed in
vacuo and the resulting aqueous mixture was acidified with 2 N HCl
to pH=3-4. Solid sodium chloride was added and the mixture was
extracted with ethyl acetate. The combined organic extracts were
washed with brine and dried with magnesium sulfate. Removal of the
solvent afforded the desired carboxylic acid (10 g, 100%).
[1461] Part C: To a solution of the carboxylic acid of part B (10
g, 22.5 mmol) in N,N-dimethylformamide (50 mL) were added
4-methylmorpholine (3.42 g, 33.8 mmol), N-hydroxybenzotriazole
(3.66 g, 27.1 mmol), and
1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (6.05
g, 31.6 mmol) followed by O-(tetrahydro-2H-pyran-2-yl)hydroxylamine
(5.05 g, 33.8 mmol). After stirring for 16 hours at ambient
temperature, the reaction mixture was concentrated to a residue
that was dissolved in ethyl acetate (200 mL) and washed with water
and brine. Concentration and purification by chromatography on
silica gel, eluting with ethyl acetate/hexane (1:1), afforded the
protected hydroxamate derivative (6.5 g, 53%) which was used
directly in the next step.
[1462] Part D: To a solution of the protected hydroxamate of part C
in methanol/1,4-dioxane (1:3, 70 mL) was added 4 N HCl/1,4-dioxane
(30 mL) and the solution was stirred at ambient temperature for 4
hours. The solvent was then removed in vacuo. Methanol (40 mL) was
added and then removed in vacuo. Diethyl ether (100 mL) was added
and the resulting solid was collected by filtration to afford the
title compound (4.3 g, 72%). Analytical calculation for
C.sub.23H.sub.26N.sub.2O.sub.6S.HCl.H.sub.2O: C, 53.85; H, 5.70; N,
5.46; Cl, 6.91; S, 6.25. Found: C, 53.65; H, 5.62; N, 5.41; Cl,
6.86; S, 6.48. MS (ESI) MH.sup.+ calculated for
C.sub.23H.sub.26N.sub.2O.sub.6S: 459, found 459.
EXAMPLE 436
Preparation of
N-hydroxy-4-[[4-[4-(methylsulfonyl)phenoxy]phenyl]-sulfonyl]-1-(2-propyny-
l)-4-piperidinecarboxamide, monohydrochloride
[1463] ##STR3865##
[1464] Part A: To a solution of the product of Example 9, Part F
(2.5 g, 6.4 mmol) in N,N-dimethylformamide (15 mL) were added
4-methylsulphonylphenol (3.5 g, 20.3 mmol) and cesium carbonate
(8.7 g, 27 mmol), and the resulting suspension was heated at 90
degrees Celsius for 16 hours. The reaction mixture was then
concentrated in vacuo. The residue was dissolved in ethyl acetate
(500 mL) and washed with 1 N sodium hydroxide, water and brine.
Concentration of the organic phase gave a residue which was
purified by chromatography on silica gel eluting with ethyl
acetate/hexane (1:1) to afford the desired aryl ether (2.5 grams,
77%).
[1465] Part B: To a solution of the ethyl ester of part A (2.5 g,
4.9 mmol) in ethanol (50 mL) and water (30 mL) was added sodium
hydroxide (2.0 g, 49 mmol) and the mixture was heated to 65 degrees
Celsius for 8 hours. The solvents were removed in vacuo. Water (50
mL) was added, the mixture was again concentrated in vacuo and the
resulting mixture was acidified with 2 N HCl to pH=4-5. The solid
precipitate was collected by filtration to afford the desired
carboxylic acid (1.57 g, 67%).
[1466] Part C: To a solution of the carboxylic acid of part B (1.57
g, 3.3 mmol) in N,N-dimethylformamide (15 mL) were added
4-methylmorpholine (0.5 g, 4.9 mmol), N-hydroxybenzotriazole (0.53
g, 3.9 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.88 g, 4.6 mmol) followed by
O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (0.74, 4.9 mmol). After
stirring for 16 hours at ambient temperature, the reaction mixture
was concentrated to a residue that was dissolved in ethyl acetate
(200 mL) and washed with water and brine. Concentration and
purification by chromatography on silica gel, eluting with ethyl
acetate/hexane, afforded the protected hydroxamate derivative (1.5
g, 79%), which was used directly in the next step.
[1467] Part D: To a solution of the protected hydroxamate of part C
(1.5 g, 2.60 mmol) in methanol/1,4-dioxane (1:3, 40 mL) was added 4
N HCl/1,4-dioxane (10 mL), and the solution was stirred at ambient
temperature for 3 hours. The solvent was then removed in vacuo.
Methanol (30 mL) was added and then removed in vacuo. Diethyl ether
(100 mL) was added and the resulting solid was collected by
filtration to afford the title compound (1.35 g, 98%). Analytical
calculated for C.sub.22H.sub.24N.sub.2O.sub.7S.sub.2.HCl: C, 49.95;
H, 4.76; N, 5.30; Cl, 6.70; S, 12.12. Found: C, 49.78; H, 4.56; N,
5.25; Cl, 6.98; S, 11.98. HRMS (ESI) MH.sub.+ calculated for
C.sub.22H.sub.24N.sub.2O.sub.7S.sub.2: 493.1103, found
493.1116.
EXAMPLE 437
Preparation of
N-hydroxy-4-[[4-[(phenylmethyl)amino]phenyl]sulfonyl]-1-(2-propynyl-4-pip-
eridinecarboxamide, monohydrochloride
[1468] ##STR3866##
[1469] Part A: To a solution of the product of Example 9, Part F
(2.5 g, 6.4 mmol) in N,N-dimethylformamide (30 mL) were added
benzylamine (3.44 g, 32.1 mmol) and cesium carbonate (10.5 g, 32.3
mmol) and the resulting suspension was heated at 100 degrees
Celsius for 16 hours. The reaction mixture was then concentrated in
vacuo. The residue was dissolved in ethyl acetate (500 mL) and
washed with water and brine and dried over magnesium sulfate.
Concentration of the organic phase gave a residue that was purified
by chromatography on silica gel, eluting with ethyl acetate/hexane
(1:1), to afford the desired benzyl aniline derivative (2.5 grams,
88%).
[1470] Part B: To a solution of the ethyl ester of part A (2.5 g,
5.67 mmol) in ethanol (50 mL) and water (30 mL) was added sodium
hydroxide (2.27 g, 56.7 mmol), and the mixture was heated to 65
degrees Celsius for 8 hours. The solvents were removed in vacuo.
Water (50 mL) was added and the mixture was again concentrated in
vacuo and the resulting mixture was acidified with 2 N HCl to
pH=4-5. The solid precipitate was collected by filtration and
rinsed with diethyl ether to afford the desired carboxylic acid
(2.3 g, 98%).
[1471] Part C: To a solution of the carboxylic acid of part B (2.3
g, 5.57 mmol) in N,N-dimethylformamide (15 mL) were added
4-methylmorpholine (0.85 g, 8.36 mmol), N-hydroxybenzotriazole (0.9
g, 6.69 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (1.5 g, 7.8 mmol) followed by
O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (1.25, 8.36 mmol). After
stirring for 16 hours at ambient temperature, the reaction mixture
was concentrated to a residue which was dissolved in ethyl acetate
and washed with water and brine. Concentration and purification by
chromatography on silica gel, eluting with ethyl acetate/hexane,
afforded the protected hydroxamate derivative which was used
directly in the next step.
[1472] Part D: Hydrogen chloride gas was bubbled for 10 minutes
through an ice bath-cooled solution of the protected hydroxamate of
part C in ethyl acetate (50 mL). The solvent was then removed in
vacuo. Ethyl acetate (100 mL) was added and then removed in vacuo.
Ethyl acetate (100 mL) was then added and the resulting solid was
collected by filtration to afford the title compound (1.6 g, 62%
for steps C and D). HRMS (ESI) MH.sup.+ calculated for
C.sub.22H.sub.25N.sub.3O.sub.4S: 428.1644, found 428.1652.
EXAMPLE 438
Preparation of
1-ethyl-N-hydroxy-4-[(4-[[4-[trifluoromethyl)phenyl]methoxy]-phenyl]sulfo-
nyl]-4-piperidine-carboxamide, monohydrochloride
[1473] ##STR3867##
[1474] Part A: To a solution of the product of Example 429, Part B
(1.0 g, 2.9 mmol) in N,N-dimethylacetamide (30 mL) were added
4-(trifluoromethyl)benzyl alcohol (1.53 g, 8.74 mmol) and cesium
carbonate (2.85 g, 8.74 mmol), and the resulting suspension was
heated at 95-100 degrees Celsius for 8 hours. The reaction mixture
was then concentrated in vacuo. The residue was dissolved in ethyl
acetate and washed with 1 N sodium hydroxide, water and brine.
Concentration of the organic phase gave a residue that was purified
by chromatography on silica gel eluting with ethyl acetate/hexane
to afford the desired aryl ether (0.8 grams, 54%).
[1475] Part B: To a solution of the ethyl ester of part A (0.8 g,
1.5 mmol) in ethanol (50 mL) and water (50 mL) was added sodium
hydroxide (1.0 g, 25 mmol) and the mixture was heated to 60 degrees
Celsius for 16 hours. The solvents were removed in vacuo. Water (50
mL) was added and the mixture was acidified with 2 N HCl to pH=4.
The solid precipitate was collected by filtration to afford the
desired carboxylic acid (0.75 g, 99%).
[1476] Part C: To a solution of the carboxylic acid of part B (0.75
g, 1.54 mmol) in N,N-dimethylformamide (10 mL) were added
4-methylmorpholine (0.47 g, 4.6 mmol), N-hydroxybenzotriazole (0.25
g, 1.85 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.41 g, 2.16 mmol) followed by
O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (0.35, 2.3 mmol). After
stirring for 16 hours at ambient temperature, the reaction mixture
was concentrated to a residue that was dissolved in ethyl acetate
(200 mL) and washed with water and brine. Concentration and
purification by chromatography on silica gel, eluting with ethyl
acetate/hexane, afforded the protected hydroxamate derivative (250
mg, 57%).
[1477] Part D: To a solution of the protected hydroxamate of part C
(250 mg, 0.43 mmol) in methanol/1,4-dioxane (1:3., 20 mL) was added
4 N HCl/1,4-dioxane (5 mL) and the solution was stirred at ambient
temperature for 3 hours. The solvent was then removed in vacuo. An
additional portion of ethyl acetate was added and then removed in
vacuo. Diethyl ether (100 mL) was added and the resulting solid was
collected by filtration to afford the title compound (190 mg, 82%).
MS (CI) MH.sup.+ calculated for
C.sub.22H.sub.25F.sub.3N.sub.2O.sub.5S: 487, found 487.
EXAMPLE 439
Preparation of
1-cyclopropyl-N-hydroxy-4-[[4-[4-(1-methylethoxy)phenoxy]-phenyl]-sulfony-
l]-4-piperidinecarboxamide, monohydrochloride
[1478] ##STR3868##
[1479] Part A: To a solution of the product of Example 398, Part A
(2.49 g, 7.0 mmol) in N,N-dimethylacetamide (30 mL) were added
4-isopropoxyphenol, which may be prepared according to the
procedure of J. Indian Chem. Soc. 73, 1996, 507-511, (1.28 g, 8.4
mmol) and cesium carbonate (5.48 g, 16.8 mmol), and the resulting
suspension was heated at 60 degrees Celsius for 16 hours. The
reaction mixture was then concentrated in vacuo. The residue was
dissolved in ethyl acetate and washed with 1 N sodium hydroxide,
water and brine. Concentration of the organic phase gave a residue
which was purified by chromatography on silica gel, eluting with
ethyl acetate/hexane, to afford the desired aryl ether (2.8 grams,
82%).
[1480] Part B: To a solution of the ethyl ester of part A (2.8 g,
5.7 mmol) in ethanol (50 mL) and water (50 mL) was added sodium
hydroxide (2.3 g, 57 mmol) and the mixture was heated to 60 degrees
Celsius for 16 hours. The solvents were removed in vacuo. Water (50
mL) was added and the mixture was acidified with 2 N HCl to pH=4.
The solid precipitate was collected by filtration to afford the
desired carboxylic acid (1.4 g, 53%).
[1481] Part C: To a solution of the carboxylic acid of part B (1.4
g, 3.1 mmol) in N,N-dimethylformamide (15 mL) were added
4-methylmorpholine (0.92 g, 9.1 mmol), N-hydroxybenzotriazole (0.49
g, 3.66 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.82 g, 4.26 mmol) followed by
O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (0.68 g, 4.5 mmol). After
stirring for 16 hours at ambient temperature, the reaction mixture
was concentrated to a residue that was dissolved in ethyl acetate
and washed with water and brine. Concentration and purification by
chromatography on silica gel, eluting with ethyl acetate/hexane,
afforded the protected hydroxamate derivative which was used
directly in the next step.
[1482] Part D: To a solution of the protected hydroxamate from part
C in methanol/1,4-dioxane (1:3, 20 mL) was added 4 N
HCl/1,4-dioxane (10 mL) and the solution was stirred at ambient
temperature for 3 hours. The solvent was then removed in vacuo. An
additional portion of ethyl acetate was added and then removed in
vacuo. Diethyl ether was added and the resulting solid was
collected by filtration to afford the title compound (0.3 g, 19%
for parts C and D together). Analytical calculation for
C.sub.24H.sub.30N.sub.2O.sub.6S.HCl: C, 56.41; H, 6.11; N, 5.48.
Found: C, 56.04; H, 5.82; N, 5.44. MS (CI) MH.sup.+ calculated for
C.sub.24H.sub.30N.sub.2O.sub.6S: 475, found 475.
EXAMPLE 440
Preparation of
4-[[4-[[2-(4-chlorophenyl)-ethyl]amino]phenyl]-sulfonyl]-1-ethyl-N-hydrox-
y-4-piperidinecarboxamide, monohydrochloride
[1483] ##STR3869##
[1484] Part A: To a solution of the product of Example 429, Part B
(1.0 g, 2.91 mmol) in N,N-dimethylacetamide (20 mL) were added
4-chlorophenethylamine (0.91 g, 5.8 mmol) and cesium carbonate
(3.80 g, 11.6 mmol), and the resulting suspension was heated at 90
degrees Celsius for 24 hours. The reaction mixture was then
concentrated in vacuo. The residue was dissolved in ethyl acetate
and washed with 1 N sodium hydroxide, water and brine.
Concentration of the organic phase gave a residue which was
purified by chromatography on silica gel eluting with ethyl
acetate/hexane to afford the desired aryl ether (0.8 grams,
58%).
[1485] Part B: To a solution of the ethyl ester of part A (0.8 g,
1.7 mmol) in ethanol (50 mL) and water (50 mL) was added sodium
hydroxide (1.0 g, 25 mmol), and the mixture was heated to 60
degrees Celsius for 16 hours. The solvents were removed in vacuo.
Water (50 mL) was added and the mixture was acidified with 2 N HCl
to pH=4. The solid precipitate was collected by filtration to
afford the desired carboxylic acid (0.75 g, 92%).
[1486] Part C: To a solution of the carboxylic acid of part B (0.75
g, 1.7 mmol) in N,N-dimethylformamide (20 mL) were added
4-methylmorpholine (0.51 g, 5.1 mmol), N-hydroxybenzotriazole (0.27
g, 2.0 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.45 g, 2.3 mmol) followed by
O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (0.37 g, 2.5 mmol). After
stirring for 16 hours at ambient temperature the reaction mixture
was concentrated to a residue which was dissolved in ethyl acetate
and washed with water and brine. Concentration and purification by
chromatography on silica gel, eluting with ethyl acetate/hexane,
afforded the protected hydroxamate derivative which was used
directly in the next step.
[1487] Part D: To a solution of the protected hydroxamate from part
C in methanol/1,4-dioxane was added 4 N HCl/1,4-dioxane (10 mL) and
the solution was stirred at ambient temperature for 3 hours. The
solvent was then removed in vacuo. An additional portion of ethyl
acetate was added and then removed in vacuo. Diethyl ether was
added and the resulting solid was collected by filtration to afford
the title compound (30 mg, 4% for parts C and D together).
EXAMPLE 441
Preparation of
N-hydroxy-1-(2-methoxyethyl)-4-[[4-[[[4-(trifluoro-methoxy)phenyl]methyl]-
amino]phenyl]-sulfonyl]-4-piperidinecarboxamide,
monohydrochloride
[1488] ##STR3870##
[1489] Part A: To a solution of
ethyl-4-[(4-fluorophenylsulfonyl)]-1-(2-methoxyethyl)-4-piperidinecarboxy-
late (1.38 g, 3.7 mmol) in N,N-dimethylformamide (20 mL) were added
4-(trifluoro-methyloxy)benzylamine (1.0 g, 5.2 mmol) and cesium
carbonate (1.7 g, 5.2 mmol), and the resulting suspension was
heated at 90 degrees Celsius for 24 hours. The reaction mixture was
then concentrated in vacuo. The residue was dissolved in ethyl
acetate and washed with 1 N sodium hydroxide, water and brine.
Concentration of the organic phase gave a residue that was purified
by chromatography on silica gel, eluting with ethyl acetate/hexane,
to afford the desired trifluoromethoxy compound (0.6 grams,
30%).
[1490] Part B: To a solution of the ethyl ester of part A (0.6 g,
1.1 mmol) in ethanol (30 mL), water (30 mL) and tetrahydrofuran (15
mL) was added sodium hydroxide (0.44 g, 11 mmol), and the mixture
was heated to 60 degrees Celsius for 16 hours. The solvents were
removed in vacuo. Water (50 mL) was added and the mixture was
acidified with 2 N HCl to pH=4. The solid precipitate was collected
by filtration to afford the desired carboxylic acid (0.5 g,
88%).
[1491] Part C: To a solution of the carboxylic acid of part B (0.50
g, 0.98 mmol) in N,N-dimethylformamide (10 mL) were added
4-methylmorpholine (0.15 g, 1.5 mmol), N-hydroxybenzotriazole (0.16
g, 1.2 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide
hydrochloride (0.27 g, 1.4 mmol) followed by
O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (0.22 g, 1.5 mmol). After
stirring for 16 hours at ambient temperature, the reaction mixture
was concentrated to a residue that was dissolved in ethyl acetate
and washed with water and brine. Concentration and purification by
chromatography on silica gel, eluting with ethyl acetate/hexane,
afforded the protected hydroxamate derivative (110 mg, 18%).
[1492] Part D: To a solution of the protected hydroxamate from part
C (110 mg, 0.18 mmol) in methanol/1,4-dioxane (1:4, 20 mL) was
added 4 N HCl/1,4-dioxane (7 mL) and the solution was stirred at
ambient temperature for 3 hours. The solvent was then removed in
vacuo. An additional portion of methanol (20 mL) was added and then
removed in vacuo. Diethyl ether was added and the resulting solid
was collected by filtration to afford the title compound (30 mg,
31%). MS (ESI) MH.sup.+ calculated for
C.sub.23H.sub.28F.sub.3N.sub.3O.sub.6S: 532, found 532.
EXAMPLE 442
Preparation of
N-hydroxy-4-[[4-[4-(1-methylethoxy)phenoxy]phenyl]sulfonyl]-1-(2-methoxye-
thyl)-4-piperidinecarboxamide, monohydrochloride
[1493] ##STR3871##
[1494] Part A: To a solution of
ethyl-4-[(4-fluorophenyl-sulfonyl)]-1-(2-methoxyethyl)-4-piperidinecarbox-
ylate (2.0 g, 5.4 mmol) in N,N-dimethylformamide (20 mL) were added
4-isopropoxyphenol, which can be prepared according to the
procedure of J. Indian Chem. Soc. 73, 1996, 507-511, (1.63 g, 10.7
mmol) and cesium carbonate (7 g, 21.5 mmol), and the resulting
suspension was heated at 60 degrees Celsius for 16 hours. The
reaction mixture was then concentrated in vacuo. The residue was
dissolved in ethyl acetate and washed with 1 N sodium hydroxide,
water and brine and dried over magnesium sulfate. Concentration of
the organic phase gave a residue that was purified by
chromatography on silica gel, eluting with ethyl acetate/hexane, to
afford the desired aryl ether (1.37 grams, 50%).
[1495] Part B: To a solution of the ethyl ester of part A (1.37 g,
2.7 mmol) in ethanol (30 mL) and water (30 mL) was added sodium
hydroxide (1.08 g, 27 mmol), and the mixture was heated to 65
degrees Celsius for 16 hours. The solvents were then removed in
vacuo. Water (50 mL) was added and the mixture was again
concentrated in vacuo and the resulting mixture was acidified with
2 N HCl to pH=4-5. The solid precipitate was collected by
filtration and rinsed with diethyl ether to afford the desired
carboxylic acid (1.25 g, 100%).
[1496] Part C: To a suspension of the carboxylic acid of part B
(1.25 g, 2.7 mmol) in N,N-dimethylformamide (15 mL) were added
4-methylmorpholine (0.82 g, 8.1 mmol),
O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (0.61, 4.1 mmol) followed
by bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (PyBroP,
1.51 g, 3.3 mmol). After stirring for 16 hours at ambient
temperature, the reaction mixture was concentrated to a residue
that was dissolved in ethyl acetate and washed with water and brine
Concentration and purification by chromatography on silica, gel
eluting with ethyl acetate/hexane, afforded the protected
hydroxamate derivative (1.0 g, 63%).
[1497] Part D: Hydrogen chloride gas was bubbled for 5 minutes
through an ice bath-cooled solution of the protected hydroxamate of
part C (1.0 g, 1.7 mmol) in ethyl acetate (20 mL). After stirring
at ambient temperature for 5 hours, the solvent was removed in
vacuo. Ethyl acetate (30 mL) was added and then removed in vacuo.
Ethyl acetate (30 mL) was again added and the resulting solid was
collected by filtration to afford the title compound (0.5 g, 56%).
Analytical calculation for C.sub.24H.sub.32N.sub.2O.sub.7S.HCl
1.5H.sub.2O: C, 51.84; H, 6.53; N, 5.04; Cl, 6.38; S, 5.77. Found:
C, 51.87; H, 6.12; N, 4.92; Cl, 6.38; S, 5.84. MS MH.sup.+
calculated for C.sub.24H.sub.32N.sub.2O.sub.7S: 493, found 493.
EXAMPLE 443
Preparation of
N-Hydroxy-1-(2-pyridinylmethyl)-4-[4-(4-trifluoro-methoxyphenoxy)phenyl]s-
ulfonyl]-4-piperidinecarboxamide, dihydrochloride
[1498] ##STR3872##
[1499] Part A: The aryl flouride from Example 9, Part D (6.22 g, 15
mmol) was combined with powdered potassium carbonate (3.04 g, 22
mmol), 4-(trifluoromethoxy)phenol (3.92 g, 322 mmol), and
N,N-dimethylforamide (7 mL), and the mixture was stirred at ninety
degrees Celcius for sixteen hours. Additional
4-(trifluoromethoxy)-phenol (1 g) and potassium carbonate (800 mg)
were added and the reaction was continued at one hundred and
fifteen degrees Celsius for twenty additional hours. The mixture
was diluted with water (100 mL) and extracted with ethyl acetate
(100 mL, then 2.times.25 mL). The combined organic layers were
dried using magnesium sulfate, concentrated, and chromatographed,
affording the desired aryl ether as an oil (9.6 g, about
quantitative).
[1500] Part B: The aryl ether from part A (9.6 g, about 15 mmol)
was dissolved in ethyl acetate (45 mL). A solution of HCl in
dioxane (4N, 12 mL) was added, and the mixture was stirred at
ambient temperature for three hours. Thin layer chromatography
indicated incomplete deprotection. Concentrated aqueous HCl (4 mL)
was added and the reaction was heated to reflux with a heat gun
several times. The solution was concentrated and was then
azeotroped with acetonitrile to afford the desired piperidine
hydrochloride salt as a foam (9.6 g). Nuclear magnetic resonance
spectroscopy indicated some contaminating
4-(trifluoromethoxy)phenol, which must have been carried through
from part A.
[1501] The piperidine hydrochloride salt (6.0 g) was dissolved in
ethyl acetate (125 mL) and washed with aqueous sodium hydroxide (2
g NaOH in 50 mL water). The organic layer was dried with magnesium
sulfate and filtered through a pad of silica gel. The phenol
contaminant was eluted. The desired piperidine was then freed from
the filter cake by elution with methanol containing 1% aqueous
ammonium hydroxide (circa 100 mL). The filtrate was concentrated
and azeotroped with acetonitrile to yield 3.3 g (7.3 mmol).
[1502] Part C: The piperidine from Part B (1.24 g, 2.7 mmol) was
combined with powdered potassium carbonate (828 mg, 6.0 mmol),
2-picolyl hydrochloride (492 mg, 3.0 mmol), and
N,N-dimethylformamide (3 mL), and the mixture was stirred at
ambient temperature for two hours, then heated at fifty degrees
Celsius for two additional hours. The mixture was diluted with
water (40 mL) and extracted with ethyl acetate (150 mL, then 50
mL). The combined organic layers were dried using magnesium
sulfate, concentrated, and chromatographed, affording the desired
ester as an oil (1.13 g, 74%).
[1503] Part D: The ester from part C (1.1 g, 2.0 mmol) was combined
with ethanol (6 mL), water (2 mL), and potassium hydroxide (0.90 g,
16 mmol). The mixture was brought to reflux and heated for four and
one-half hours. The solution was then cooled to zero degrees
Celsius and acidified using concentrated aqueous hydrogen chloride.
The solvent was removed, and the resulting solids were dried by
azeotroping with acetonitrile. A vacuum was applied until constant
weight was achieved.
[1504] The crude acid hydrochloride salt was stirred with
N-methylmorpholine (about 0.5 mL), 1-hydroxybenzotriazole (0.405 g,
3 mmol), O-tetrahydropyranyl hydroxylamine (0.35 g, 3.0 mmol), and
N,N-dimethyformamide (9 mL). After ten minutes,
1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.57
g, 3.0 mmol) was added, and the mixture was stirred overnight. The
reaction was then diluted with half-saturated aqueous sodium
bicarbonate (50 mL), and extracted with ethyl acetate (100 mL, then
25 mL). The combined organic layers were dried over magnesium
sulfate, concentrated, and chromatographed (9:1 ethyl acetate:
methanol) to afford the desired tetrahydropyranyl-protected
hydroxamate as a yellow oil (1.20 g, 95%).
[1505] Part E: The tetrahydropyranyl-protected hydroxamate (1.20 g,
1.90 mmol) was diluted with methanol (9 mL). Acetyl chloride (0.78
mL, 11 mmol) was added over two minutes. The reaction was stirred
for 2 hours at ambient temperature, then concentrated to afford the
desired dihydrochloride salt (1.20 g, quantitative yield) as a
white crystalline solid. Anaytical calculation for
C.sub.25H.sub.24F.sub.3N.sub.3O.sub.6S.2HCl.1/3H.sub.2O: C, 47.58;
H, 4.07; N, 6.66. Found: C, 47.31; H, 4.14; N, 6.80.
EXAMPLE 444
In Vitro Metalloprotease Inhibition
[1506] The compounds prepared in the manner described in the
Examples above were assayed for activity by an in vitro assay.
Following the procedures of Knight et al., FEBS Lett. 296(3):263
(1992). Briefly, 4-aminophenylmercuric acetate (APMA) or
trypsin-activated MMPs were incubated with various concentrations
of the inhibitor compound at room temperature for 5 minutes.
[1507] More specifically, recombinant human MMP-13, MMP-1, MMP-2
and MMP-9 enzymes were prepared in laboratories of the assignee
following usual laboratory procedures. MMP-13 from a full length
cDNA clone was expressed as a proenzyme using a baculovirus as
discussed in V. A. Luckow, Insect Cell Expression Technology, pages
183-218, in Protein Engineering: Principles and Practice, J. L.
Cleland et al eds., Wiley-Liss, Inc., (1996). See, also, Luckow et
al., J. Virol., 67:4566-4579 (1993); O'Reilly et al., Baculovirus
Expression Vectors: A Laboratory Manual, W.H. Freeman and Company,
New York, (1992); and King et al., The Baculovirus Expression
System: A Laboratory Guide, Chapman & Hall, London (1992) for
further details on use of baculovirus expression systems. The
expressed enzyme was purified first over a heparin agarose column
and then over a chelating zinc chloride column. The proenzyme was
activated by APMA for use in the assay.
[1508] MMP-1 expressed in transfected HT-1080 cells was provided by
Dr. Harold Welgus of Washington University, St. Louis, Mo. The
enzyme was also activated using APMA and was then purified over a
hydroxamic acid column. Dr. Welgus also provided transfected
HT-1080 cells that expressed MMP-9. Transfected cells that
expressed MMP-2 were provided by Dr. Gregory Goldberg, also of
Washington University. Studies carried out using MMP-2 in the
presence of 0.02% 2-mercaptoethanol are shown in the table below
with an asterisk. Further specifics for preparation and use of
these enzymes can be found in the scientific literature describing
these enzymes. See, for example, Enzyme Nomenclature, Academic
Press, San Diego, Calif. (1992) and the citations therein, and
Frije et al., J. Biol. Chem., 26(24): 16766-16773 (1994). The
enzyme substrate is a methoxycoumarin-containing polypeptide having
the following sequence:
[1509] MCA-ProLeuGlyLeuDpaAlaArgNH.sub.2, wherein MCA is
methoxycoumarin and Dpa is
3-(2,4-dinitrophenyl)-L-2,3-diaminopropionyl alanine. This
substrate is commercially available from Baychem as product
M-1895.
[1510] The buffer used for assays contained 100 mM Tris-HCl, 100 mM
NaCl, 10 mM CaCl.sub.2 and 0.05 percent polyethyleneglycol (23)
lauryl ether at a pH value of 7.5. Assays were carried out at room
temperature, and dimethyl sulfoxide (DMSO) at a final concentration
of 1 percent was used to dissolve inhibitor compound.
[1511] The assayed inhibitor compound in DMSO/buffer solution was
compared to an equal amount of DMSO/buffer with no inhibitor as
control using Microfluor.TM. White Plates (Dynatech). The inhibitor
or control solution was maintained in the plate for 10 minutes and
the substrate was added to provide a final concentration of 4
.mu.M.
[1512] In the absence of inhibitor activity, a fluorogenic peptide
was cleaved at the gly-leu peptide bond, separating the highly
fluorogenic peptide from a 2,4-dinitrophenyl quencher, resulting in
an increase of fluorescence intensity (excitation at 328
nm/emission at 415 nm). Inhibition was measured as a reduction in
fluorescent intensity as a function of inhibitor concentration,
using a Perkin Elmer L550 plate reader. The IC.sub.50 values were
calculated from those values. The results are set forth in the
Inhibition Tables A and B below, reported in terms of IC.sub.50 to
three significant figures, where appropriate. TABLE-US-00164
Inhibition Table A (nM) Example MMP-13 MMP-2 MMP-1 MMP-9 Number
IC.sub.50 (nM) IC.sub.50 (nM) IC.sub.50 (nM) IC.sub.50 (nM) 1 5.1
2.6 6600 31.6 2 0.25 0.1 220 1.4 3 0.3 0.2 1140 4 0.35 0.23 1090 5
5 4800 1800 >10000 6 0.25 0.15 327 7 37.2 1.8 >10000 235 8
24.1 4 >10000 290 9 0.5 0.2 9000 1.5 10 0.4 0.2 1600 0.3 11 6
4.4 >10000 12 <0.1 <0.1 464 13 0.6 0.4 >10000 8 14 0.1
<0.1 464 15 0.4 0.2 3600 0.2 16 2.4 100 >10000 2500 17 0.3
0.2 400 0.3 18 0.5 0.3 800 19 9 13.9 >10000 20 1.7 23.5 10000 21
0.6 1.3 >10000 22 1.2 0.9 >10000 23 0.2 <0.1 2275 24 0.4 1
>10000 3.7 25 3 2.6 >10000 26 0.5 0.2 7700 7 27 0.45 0.4
>10000 4 28 <0.1 <0.1 770 29 0.3 0.15 >10,000
[1513] TABLE-US-00165 Inhibition Table B (nM) Example MMP-1 MMP-2
MMP-9 MMP-13 Number IC.sub.50 (nM) IC.sub.50 (nM) IC.sub.50 (nM)
IC.sub.50 (nM) 30 350 0.1 0.3 0.1 31 370 <0.1 0.2 32 >10000
0.1 2.5 0.2 33 >10000 0.5 9.4 0.8 34 >10000 1.1 1.2 35
>10000 0.3 3 0.5 36 7300 0.4 8 0.6 37 1000 0.2 0.3 38 >10000
20 135 22 39 >10000 230 24.5 40 4400 0.4 2.4 1.9 41 1200 0.15
0.2 42 2200 0.2 1.3 0.4 43 7000 0.4 0.8 44a >10000 <0.1 0.2
44b >10000 8000 >10000 45 8800 2.5 1.7 46 710000 -- -- 710000
47a >10000 7 14.6 47b >10000 3000 3100 48 210 0.2 0.25 49
>10000 76.9 90.0 51 5500 0.7 1.3 52 >10000 2.7 5.9 53
>10000 0.3 92 1.5 54 >10000 60 120 55 1200 0.1 0.3 56 1500
<0.1 0.15 57 1200 <0.1 0.2 58 >10000 83 30 59 >10000
130 180 60 >10000 64 147 61 >10000 1500 2000 62 >10000
>10000 >10000 63 >10000 18.1 530 1.5 64 1470 <0.1 0.15
65 8000 0.6 4.4 0.7 66 >10000 4590 36000 67 1600 239 268 68
>10000 5.3 130 6 69 1140 <0.1 0.2 <0.1 70 1500 0.2 7.3 0.8
71 3600 0.35 5 0.8 72 2100 <0.1 0.3 73 1140 <0.1 0.2 <0.1
74 >10000 130 480 75 >10000 60 900 78 >10000 6 50 10 79
>10000 1 1.7 80 3000 0.1 1.8 0.2 81 3300 0.1 0.3 82 4000 0.1 0.3
83 8000 1.2 5 1.5 84 8000 1.8 2.5 85 500 <0.1 0.4 <0.1 86
>10000 2.5 3.5 87 7200 0.8 13.9 0.35 88 1100 0.2 0.5 0.2 89 1200
0.15 0.4 0.25 90 1200 0.1 0.1 91 1800 1.5 40 2.1 92 >10000 1800
2430 93 8000 0.4 3.5 0.7 94 268 <0.1 0.4 <0.1 95 >10000 1
3.6 0.5 96 5000 0.2 1.3 0.3 97 4000 8.2 16.7 98 >10000 37 23.4
99 >10000 0.4 1 100 435 <0.1 0.3 0.15 101 1800 0.3 2.9 0.45
102 2000 <0.1 0.2 103 >10000 0.8 10 0.7 104 >10000 1.5
42.8 0.65 105 >10000 3500 114 0.85 106 >10000 27.1 12.1 107
>10000 12.1 6 108 2000 0.4 0.4 109 500 0.1 0.7 0.3 110 2700 0.4
10 0.5 111 3700 0.5 1.3 112 1000 7 3.2 113 >10000 0.9 4 114 3000
0.65 31.6 0.4 115 4500 0.3 31.6 0.6 116 2350 2 15.3 5.5 117 3700
0.6 45.4 4.8 118 2850 0.3 50 0.8 119 >10000 1.5 30 1.7 120 4000
0.4 0.4 121 1200 <0.1 0.2 122 600 0.1 0.15 123 3600 1.8 27.8 1.8
124 1000 0.5 1.1 125 >10000 0.4 7 0.5 126 8000 11.3 10 127
>10000 37 40 128 >10000 23.8 20 129 >10000 >100 1000
130 >10000 57.7 45.9 131 >10000 650 10 132 >10000 420 133
>10000 90 27 134 9000 29 4 135 >10000 500 65 136 >10000
445 40 137 >10000 300 34.7 138 >10000 >100 >100 139
>10000 1000 25.4 140 >10000 1000 60 141 >10000 >100
>100 142 >10000 600 70 143 >10000 900 23.9 144 >10000
800 30.7 145 >10000 >100 >100 146 >10000 650 32.6 147
>10000 2700 31 148 >10000 2400 31 149 >10000 1600 15.5 150
>10000 1300 14.5 151 >10000 1500 35 152 >10000 2400 16.5
153 >10000 2700 13.5 154 >10000 1600 27 155 >10000
>1000 >100 156 >10000 3300 27.8 157 >10000 6000 90 158
>10000 5000 80 159 >10000 2500 15.6 160 >10000 4700 33.7
161 >10000 >1000 >100 162 >10000 >1000 >100 163
>10000 4000 77.4 164 >10000 1750 20 165 >10000 330 13.6
166 >10000 >1000 >100 167 >10000 >1000 >100 168
>10000 >1000 >100 169 10000 >1000 >100 170 10000
>1000 >100 171 >10000 >1000 >100 172 >10000
>1000 >100 173 >10000 >1000 >100 174 8000 900
>100 175 10000 >1000 >100 176 >10000 400 25 177
>10000 400 21 178 >10000 540 >100 179 >10000 440 100
180 5000 128 4 181 10000 121 6.1 182 >10000 240 4 183 >10000
288 40 184 >10000 94 7 185 >10000 210 17.5 186 >10000 120
10 187 >10000 290 12.1 188 >10000 350 9.4 189 3700 94 8 190
>10000 220 10.6 191 >10000 350 4 192 >10000 330 10 193
>10000 390 6 194 10000 165 8 195 10000 100 14.5 196 >10000
240 25 197 7000 145 8 198 >10000 270 14.5 199 >10000 155 1.4
200 >10000 24 17.5 201 >10000 22.4 13.6 202 >10000 54 9.15
203 8500 31 30 204 >10000 25 27.1 205 7300 12.7 2 206 >10000
>10.0 20 207 >10000 30.6 28 208 >10000 27 27 209 >10000
19 20 210 >10000 27 20 211 >10000 33 24 212 >10000 33 20
213 310 <1.0 <1.0 214 1100 <1.0 <1.0 215 250 <1.0
<1.0 216 1000 <1 <1.0 217 600 <1.0 <1.0 218
>10000 <1.0 <1.0 219 >10000 <1.0 <1.0 220 145
<1.0 <1.0 221 1600 <1.0 <1.0 222 100 <1.0 <1.0
223 1100 <1.0 <1.0 224 >10000 18.1 16.7 225 >10000 54
70 226 >10000 18.6 6 227 >10000 <1 <1 228 600 <1.0
<1.0 229 >10000 <1 <1 230 >10000 >100 >100 231
650 <1.0 <1.0 232 <100 <1.0 <1.0
EXAMPLE 445
In Vivo Anaiogenesis Assay
[1514] The study of angiogenesis depends on a reliable and
reproducible model for the stimulation and inhibition of a
neovascular response. The corneal micropocket assay provides such a
model of angiogenesis in the cornea of a mouse. See, A Model of
Angiogenesis in the Mouse Cornea; Kenyon, BM, et al., Investigative
Ophthalmology & Visual Science, July 1996, Vol. 37, No. 8.
[1515] In this assay, uniformLy sized Hydron.TM. pellets containing
bFGF and sucralfate were prepared and surgically implanted into the
stroma mouse cornea adjacent to the temporal limbus. The pellets
were formed by making a suspension of 20 .mu.L sterile saline
containing 10 .mu.g recombinant bFGF, 10 mg of sucralfate and 10
.mu.L of 12 percent Hydron.TM. in ethanol. The slurry was then
deposited on a 10.times.10 mm piece of sterile nylon mesh. After
drying, the nylon fibers of the mesh were separated to release the
pellets.
[1516] The corneal pocket is made by anesthetizing a 7 week old
C57Bl/6 female mouse, then proptosing the eye with a jeweler's
forceps. Using a dissecting microscope, a central, intrastromal
linear keratotomy of approximately 0.6 mm in length is performed
with a #15 surgical blade, parallel to the insertion of the lateral
rectus muscle. Using a modified cataract knife, a lamellar
micropocket is dissected toward the temporal limbus. The pocket is
extended to within 1.0 mm of the temporal limbus. A single pellet
was placed on the corneal surface at the base of the pocket with a
jeweler's forceps. The pellet was then advanced to the temporal end
of the pocket. Antibiotic ointment was then applied to the eye.
[1517] Mice were dosed on a daily basis for the duration of the
assay. Dosing of the animals was based on bioavailability and
overall potency of the compound. an exemplary dose was 10 or 50
mg/kg (mpk) bid, po. Neovascularization of the corneal stroma
begins at about day three and was permitted to continue under the
influence of the assayed compound until day five. At day five, the
degree of angiogenic inhibition was scored by viewing the
neovascular progression with a slit lamp microscope.
[1518] The mice were anesthetized and the studied eye was once
again proptosed. The maximum vessel length of neovascularization,
extending from the limbal vascular plexus toward the pellet was
measured. In addition, the contiguous circumferential zone of
neovascularization was measured as clock hours, where 30 degrees of
arc equals one clock hour. The area of angiogenesis was calculated
as follows. area = ( 0.4 .times. clock .times. .times. hours
.times. 3.14 .times. vessel .times. .times. length .times. .times.
( in .times. .times. mm ) ) 2 ##EQU1##
[1519] Five to six mice were utilized for each compound in each
study. The studied mice were thereafter compared to control mice
and the difference in the area of neovascularization was recorded
as an averaged value. Each group of mice so studied constitutes an
"n" value of one, so that "n" values greater than one represent
multiple studies whose averaged result is provided in the table. A
contemplated compound typically exhibits about 25 to about 75
percent inhibition, whereas the vehicle control exhibits zero
percent inhibition.
[1520] Data for four compounds of the above examples are provided
below at dosages of 10 and 50 mpk. TABLE-US-00166 Inhibition of
Angiogenesis Dosage Example 10 mpk 50 mpk Marimastat -- 48 (n = 6)
4 18 (n = 3) 41 (n = 6) 9 50 (n = 2) 46 (n = 3) 10 47 (n = 1) 54 (n
= 2) 24 53 (n = 1) 78 (n = 1)
EXAMPLE 446
In Vivo PC-3 Tumor Reduction
[1521] PC-3 human pancreatic cancer eclls (ATCC CRL 1435) were
grown to 90% confluence in F12/MEM (Gibco) containing 7% FBS
(Gibco). Cells were mechanically harvested using a rubber scraper,
and then washed twice with cold medium. The resulting cells were
resuspended in cold medium with 30% matrigel (Collaborative
Research) and the cell-containing medium was maintained on ice
until used.
[1522] Balb/c nu/nu mice at 7-9 weeks of age were anesthetized with
avertin [2,2,2-tribromethanol/t-amyl alcohol (1 g/l mL) diluted
1:60 into phosphate-buffered sline] and 3-5.times.10.sup.6 of the
above cells in 0.2 mL of medium were injected into the left flank
of each mouse. Cells were injected in the morning, whereas dosing
with an inhibitor began at 6 PM. The animals were gavaged BID from
day zero (cell injection day) to day 25-30, at which time the
animals were euthanized and tumors weighed.
[1523] Compounds were dosed at 10 mg/mL in 0.5%
methylcellulose/0.1% polysorbate 80 to provide a 50 mg/kg (mpk)
dose twice each day, or diluted to provide a 10 mg/kg (mpk) dose
twice each day. Tumor measurements began on day 7 and continued
every third or fourth day until completion of the study. Groups of
ten mice were used in each study and nine to ten survived. Each
group of mice so studied constitutes an "n" value of one, so that
"n" values greater than one represent multiple studies whose
averaged result is provided in the table. The results of this study
for several of the before discussed compounds are shown below as
average reductions in tumor weight. TABLE-US-00167 Average
Percentage Reduction In Tumor Weight Dosage Example 10 mpk 50 mpk
Marimastat <5 39 (n = 2) 4 33 (n = 2) 43 (n = 2) 9 40 (n = 1) 60
(n = 1) 10 nt 59 (n = 1)
EXAMPLE 447
Tumor Necrosis Factor Assays Cell Culture
[1524] The cells used in the assay are the human moncytic line
U-937 (ATCC CRL-1593). The cells are grown in RPMI w/10% FCS and
PSG supplement (R-10) and are not permitted to overgrow. The assay
is carried out as follows: [1525] 1. Count, then harvest cells by
centrifugation. Resuspend the pellet in R-10 supplement to a
concentration of 1.540.times.10.sup.6 cells/mL.
[1526] 2. Add test compound in 65 uL R-10 to the appropriate wells
of a 96-well flat bottom tissue culture plate. The initial dilution
from a DMSO stock (100 mM compound) provides a 400 uM solution,
from which five additional three-fold serial dilutions are made.
Each dilution of 65 ul (in triplicate) yields final compound test
concentrations of 100 .mu.M, 33.3 .mu.M, 11.1 aM, 3.7 .mu.M, 1.2
.mu.M and 0.4 .mu.M.
[1527] 3. The counted, washed and resuspended cells (200,000
cells/well) in 130 .mu.L are added to the wells.
[1528] 4. Incubation is for 45 minutes to one hour at 37.degree. C.
in 5% CO.sub.2 in a water saturated container.
[1529] 5. R-10 (65 uL) containing 160 ng/mL PMA (Sigma) is added to
each well.
[1530] 6. The test system is incubated at 37.degree. C. in 5%
CO.sub.2 overnight (18-20 hours) under 100% humidity.
[1531] 7. Supernatant, 150 .mu.L, is carefully removed from each
well for use in the ELISA assay.
[1532] 8. For toxicity, a 50 .mu.L aliquot of working solution
containg 5 mL R-10, 5 mL MTS solution [CellTiter 96 AQueous One
Solution Cell Proliferation Assay Cat.#G358/0,1 (Promega Biotech)]
and 250 ul PMS solution are added to each well containing the
remaining supernatant and cells and the cells incubated at
37.degree. C. in 5% CO.sub.2 until the color develops. The system
is excited at 570 nm and read at 630 nm.
[1533] TNF Receptor II ELISA Assay
[1534] 1. Plate 100 .mu.L/well 2 ug/mL mouse anti-human TNFrII
antibody (R&D Systems. #MAB226) in 1.times.PBS (pH 7.1, Gibco)
on NUNC-Immuno Maxisorb plate. Incubate the plate at 4.degree. C.
overnight (about 18-20 hours) [1535] 2. Wash the plate with
PBS-Tween (1.times.PBS w/0.05% Tween).
[1536] 3. Add 200 .mu.L 5% BSA in PBS and block at 37.degree. C. in
a water saturated atmosphere for 2 hours.
[1537] 4. Wash the plate with PBS-Tween.
[1538] 5. Add sample and controls (100 ul of each) to each well.
The standards are 0, 50, 100, 200, 300 and 500 pg recombinant human
TNFrII (R&D Systems #226-B2) in 100 .mu.L 0.5% BSA in PBS. The
assay is linear to between 400-500 pg of standard.
[1539] 6. Incubate at 37.degree. C. in a saturated atmosphere for
1.5 hours.
[1540] 7. Wash the plate with PBS-Tween.
[1541] 8. Add 100 .mu.L goat anti-human TNFrII polyclonal (1.5
.mu.g/mL R&D Systems #AB226-PB in 0.5% BSA in PBS).
[1542] 9. Incubate at 37.degree. C. in a saturated atmosphere for 1
hour.
[1543] 10. Wash the plate with PBS-Tween.
[1544] 11. Add 100 .mu.L anti-goat IgG-peroxidase (1:50,000 in 0.5%
BSA in PBS, Sigma #A5420).
[1545] 11. Incubate at 37.degree. C. in a saturated atmosphere for
1 hour.
[1546] 12. Wash the plate with PBS-Tween.
[1547] 13. Add 10 .mu.L KPL TMB developer, develop at room
temperature (usually about 10 minutes), then terminate with
phosphoric acid and excite at 450 nm and read at 570 nm.
[1548] TNF.alpha. ELISA Assay
[1549] Coat Immulon.RTM. 2 plates with 0.1 mL/well of 1 ug/mL
Genzyme mAb in 0.1 M NaHCO.sub.3 pH 8.0 buffer overnight (about
18-20 hours) at 4.degree. C., wrapped tightly in Saran wrap.
[1550] Flick out coating solution and block plates with 0.3 mL/well
blocking buffer overnight at 4.degree. C., wrapped in Saran
wrap.
[1551] Wash wells thoroughly 4.times. with wash buffer and
completely remove all wash buffer. Add 0.1 mL/well of either
samples or rhTNF.alpha. standards. Dilute samples if necessary in
appropriate diluant (e.g. tissue culture medium). Dilute standard
in same diluant. Standards and samples should be in
triplicates.
[1552] Incubate at 37.degree. C. for 1 hour in humified
container.
[1553] Wash plates as above. Add 0.1 mL/well of 1:200 dilution of
Genzyme rabbit anti-hTNF
[1554] Repeat incubation.
[1555] Repeat wash. Add 0.1 mL/well of 1 .mu.g/mL Jackson goat
anti-rabbit IgG (H+L)-peroxidase.
[1556] Incubate at 37.degree. C. for 30 minutes.
[1557] Repeat wash. Add 0.1 mL/well of peroxide-ABTS solution.
[1558] Incubate at room temperature for 5-20 minutes.
[1559] Read OD at 405 nm.
[1560] 12 Reagents are:
[1561] Genzyme mouse anti-human TNF? monoclonal (Cat.# 80-3399-01)
Genzyme rabbit anti-human TNF? polyclonal (Cat.#IP-300) Genzyme
recombinant human TNF? (Cat.#TNF-H).
[1562] Jackson Immunoresearch peroxide-conjugated goat anti-rabbit
IgG (H+L) (Cat.#111-035-144).
[1563] Kirkegaard/Perry peroxide ABTS solution (Cat#50-66-01).
[1564] Immulon 2 96-well microtiter plates.
[1565] Blocking solution is 1 mg/mL gelatin in PBS with 1.times.
thimerasol.
[1566] Wash buffer is 0.5 mL Tween.RTM. 20 in 1 liter of PBS.
[1567] Results: TABLE-US-00168 MTS TNFRII TNF.alpha. Toxicity
Release Release Example TD.sub.50 in IC.sub.50 in IC.sub.50 in
Number micromolar micromolar micromolar DMSO >100 >100
>100 4 >100 >100 >50 6 >100 >100 >50 9 >100
>100 >50 10 >100 >100 >50 13 >100 >100 >50
27 100 >100 >80 35 >100 >100 >80 69 100 >100
>80 95 >100 >100 >50 379 80 >100 80
EXAMPLE 448
Pharmacokinetic (PK)-Evaluation of MMP Inhibitors in Rats
[1568] Under metofane anesthesia, the femoral artery (all 8 rats)
and femoral vein (only 4 of 8 rats) are isolated and canulated with
PE50 tubing and secured with 3.0 silk suture. The following
determinations require two catheters, with the venous line being
used for infusion of compound (in the group of rats that receives
compound via the intraveneous (IV) route.), and the arterial line
being used for collection of blood samples. The rats are then
placed in restraining cages that permit minimal movement and
allowed to recover from anesthesia for approximately 30 minutes. At
time 0 (prior to dosing), blood samples (400 .mu.L) are collected
from arterial cannula.
[1569] One group of rats (4 rats per group) receives compound via
the oral route at a dosing volume of 2 mL/kg (10 mg/mL, dissolved
in 0.5% methylcellulose, 0.1% Tween.RTM. 20), while the other group
of rats receives compound via the intravenous cannula, at a dosing
volume of 2 ml/kg (10 mg/mL, dissolved in 10% EtOH, 50% PEG 400,
40% saline). The blood samples are collected from the arterial
cannula at 15, 30, 60, 120, 240, and 360 minutes from the oral
group with an additional 3 minute sample being collected from IV
group. After each sample, the cannulas are flushed with PBS
containing 10 units/ml heparin. The animals are subjected to
euthanasia with an excess of anesthesia or carbon monoxide
asphyxiation when the study is terminated at 6 hours. Blood samples
from each time point are assayed for MMP-13 enzyme inhibitory
activity and the circulating concentration of compound plus active
metabolites is estimated based on the standard curve.
Pharmacokinetic (PK) parameters are calculated by the VAX computer
program CSTRIP. The parameters are defined in textbooks such as
Goodman and Gilman's The Pharmacological Basis of Therapeutics,
eighth ed., McGraw-Hill, Inc., New York (1993) and the references
therein. TABLE-US-00169 Rat Intraveneous Rat Oral 20 mpk 20 mpk
Blood Blood AUC Level @ AUC Level @ Example t.sub.1/2 (0-.infin.) 3
min Cmax (0-6 hr) BA 6 hr Number Hour hr * .mu.g/mL .mu.g/mL
.mu.g/mL hr * .mu.g/mL % .mu.g/mL 4 1.77 24.80 37.60 TA 1.84 4.14
16.7 0.254 6 1.19 46.39 84.72 22.88 16.45 35.5 0.345 9 1.10 33.67
42.17 13.63 9.43 28.0 0.281 10 0.84 43.01 73.00 18.47 12.93 30.1
0.134 12 0.86 22.11 73.54 1.00 2.45 11.1 0.121 13 1.03 43.08 91.07
21.98 18.08 42.0 0.228 14 1.25 12.92 12.10 4.13 7.66 59.3 0.102 15
1.01 49.29 120.83 27.16 18.19 36.9 0.192 17 0.74 37.10 63.44 15.72
13.32 35.9 0.135 22 1.47 14.05 18.06 0.82 1.82 13.0 0.174 23 0.85
25.01 59.92 7.31 5.93 23.7 0.087 24 2.49 37.35 62.52 9.79 15.88
42.5 0.545 25 -- -- -- 1.48 0.173 26 0.58 17.51 64.01 0.29 0.83 4.7
0.051 27 1.10 43.32 43.69 10.87 21.24 49.0 0.427 28 -- -- -- 10.02
24.28 0.537 32 1.03 38.94 51.48 7.65 13.48 34.6 0.529 33 1.91 29.96
24.13 3.33 8.25 27.5 0.543 34 -- -- -- 2.13 0.495 35 -- -- -- 12.59
26.97 1.237 36 0.65 5.74 19.66 0.16 0.73 12.7 0.072 40 -- -- --
1.55 0.128 42 -- -- -- 0.71 0.036 43 0.82 18.79 61.76 4.17 3.24
17.2 0.040 53 0.97 10.78 31.68 0.37 0.48 4.4 BLD 65 -- -- -- 0.99
0.080 68 -- -- -- 3.41 0.038 69 1.87 63.78 44.00 8.58 22.89 35.9
1.172 70 -- -- -- 3.08 0.131 71 -- -- -- 4.00 0.452 72 -- -- --
1.42 2.03 0.062 73 -- -- -- 1.89 6.87 0.372 79 1.82 6.11 13.99 0.02
0.07 1.1 0.010 80 -- -- 40.83 0.03 0.003 81 0.76 38.21 89.01 5.06
6.40 16.7 0.074 89 -- -- -- 1.68 0.196 90 -- -- -- 0.08 0.041 91 --
-- -- 0.17 0.138 93 1.81 13.48 20.88 0.35 1.55 11.5 0.126 94 1.71
25.13 43.37 0.87 1.34 5.3 0.050 95 1.06 19.74 34.71 1.74 4.86 24.6
0.148 96 0.43 0.076 99 0.68 35.68 99.49 14.25 8.05 22.6 0.071 100
1.50 24.60 26.06 3.12 11.30 45.9 0.506 103 1.10 19.66 31.11 2.55
0.09 19.9 0.092 104 0.66 9.86 29.82 9.89 4.88 49.4 0.008 108 -- --
-- 2.96 0.108 109 1.12 7.13 13.91 0.93 0.85 11.9 0.027 110 2.67
0.02 0.015 111 0.65 8.49 33.56 0.45 1.11 13.1 0.054 115 1.36 7.81
12.95 1.17 2.00 25.6 0.058 117 0.78 8.69 40.50 0.18 0.28 3.3 0.016
118 1.85 10.97 17.18 0.75 3.32 30.3 0.268 121 -- -- -- 0.31 0.055
123 -- -- -- 1.43 0.017 125 0.73 15.73 25.36 1.11 2.50 15.9 0.119
233 0.85 23.12 31.90 3.33 6.22 26.9 0.584 379 1.74 51.41 37.54 4.30
16.80 32.7 1.154 382 1.71 73.68 48.81 7.27 36.12 49.0 3.113 387 --
-- -- 0.65 0.558 388 0.94 26.10 34.62 0.15 0.68 2.6 0.073 390 1.50
127.63 120.60 23.21 44.20 34.6 1.780 391 1.45 120.92 82.87 24.02
73.24 60.6 2.680 400 104.34 8.55 0.160 408 3.30 25.18 57.40 9.46
4.17 16.6 0.015 410 1.78 29.83 40.08 0.63 2.08 6.7 0.223 414 0.73
26.15 61.89 5.31 6.22 23.8 0.021 416 2.94 230.70 111.17 29.63
156.71 67.9 20.52 418 2.42 209.92 78.55 20.65 77.52 36.9 7.347 421
-- -- -- 13.08 19.21 0.206 427 2.85 36.72 50.74 4.16 8.44 23.0
0.440 437 -- -- -- 4.21 4.43 0.128 438 2.14 9.05 7.46 0.39 1.86
20.6 0.316 Rat Intraveneous Rat Oral 20 mpk 20 mpk Blood Blood AUC
Level @ AUC Level @ Example t.sub.1/2 (0-.infin.) 3 min Cmax (0-6
hr) BA 6 hr Number Hour hr * .mu.g/mL .mu.g/mL .mu.g/mL hr *
.mu.g/mL % .mu.g/mL 4 1.77 24.80 37.60 1.84 4.14 16.7 0.254 6 1.19
46.39 84.72 22.88 16.45 35.5 0.345 9 1.10 33.67 42.17 13.63 9.43
28.0 0.281 10 0.84 43.01 73.00 18.47 12.93 30.1 0.134 12 0.86 22.11
73.54 1.00 2.45 11.1 0.121 13 1.03 43.08 91.07 21.98 18.08 42.0
0.228 14 1.25 12.92 12.10 4.13 7.66 59.3 0.102 15 1.01 49.29 120.83
27.16 18.19 36.9 0.192 17 0.74 37.10 63.44 15.72 13.32 35.9 0.135
22 1.47 14.05 18.06 0.82 1.82 13.0 0.174 23 0.85 25.01 59.92 7.31
5.93 23.7 0.087 24 2.49 37.35 62.52 9.79 15.88 42.5 0.545 25 -- --
-- 1.48 0.173 26 0.58 17.51 64.01 0.29 0.83 4.7 0.051 27 1.10 43.32
43.69 10.87 21.24 49.0 0.427 28 -- -- -- 10.02 24.28 0.537 32 1.03
38.94 51.48 7.65 13.48 34.6 0.529 33 1.91 29.96 24.13 3.33 8.25
27.5 0.543 34 -- -- -- 2.13 0.495 35 -- -- -- 12.59 26.97 1.237 36
0.65 5.74 19.66 0.16 0.73 12.7 0.072 40 -- -- -- 1.55 0.128 42 --
-- -- 0.71 0.036 43 0.82 18.79 61.76 4.17 3.24 17.2 0.040 53 0.97
10.78 31.68 0.37 0.48 4.4 BLD 65 -- -- -- 0.99 0.080 68 -- -- --
3.41 0.038 69 1.87 63.78 44.00 8.58 22.89 35.9 1.172 70 -- -- --
3.08 0.131 71 -- -- -- 4.00 0.452 72 -- -- -- 1.42 2.03 0.062 73 --
-- -- 1.89 6.87 0.372 79 1.82 6.11 13.99 0.02 0.07 1.1 0.010 80 --
-- 40.83 0.03 0.003 81 0.76 38.21 89.01 5.06 6.40 16.7 0.074 89 --
-- -- 1.68 0.196 90 -- -- -- 0.08 0.041 91 -- -- -- 0.17 0.138 93
1.81 13.48 20.88 0.35 1.55 11.5 0.126 94 1.71 25.13 43.37 0.87 1.34
5.3 0.050 95 1.06 19.74 34.71 1.74 4.86 24.6 0.148 96 0.43 0.076 99
0.68 35.68 99.49 14.25 8.05 22.6 0.071 100 1.50 24.60 26.06 3.12
11.30 45.9 0.506 103 1.10 19.66 31.11 2.55 0.09 19.9 0.092 104 0.66
9.86 29.82 9.89 4.88 49.4 0.008 108 -- -- -- 2.96 0.108 109 1.12
7.13 13.91 0.93 0.85 11.9 0.027 110 2.67 0.02 0.015 111 0.65 8.49
33.56 0.45 1.11 13.1 0.054 115 1.36 7.81 12.95 1.17 2.00 25.6 0.058
117 0.78 8.69 40.50 0.18 0.28 3.3 0.016 118 1.85 10.97 17.18 0.75
3.32 30.3 0.268 121 -- -- -- 0.31 0.055 123 -- -- -- 1.43 0.017 125
0.73 15.73 25.36 1.11 2.50 15.9 0.119 233 0.85 23.12 31.90 3.33
6.22 26.9 0.584 379 1.74 51.41 37.54 4.30 16.80 32.7 1.154 382 1.71
73.68 48.81 7.27 36.12 49.0 3.113 387 -- -- -- 0.65 0.558 388 0.94
26.10 34.62 0.15 0.68 2.6 0.073 390 1.50 127.63 120.60 23.21 44.20
34.6 1.780 391 1.45 120.92 82.87 24.02 73.24 60.6 2.680 400 104.34
8.55 0.160 408 3.30 25.18 57.40 9.46 4.17 16.6 0.015 410 1.78 29.83
40.08 0.63 2.08 6.7 0.223 414 0.73 26.15 61.89 5.31 6.22 23.8 0.021
416 2.94 230.70 111.17 29.63 156.71 67.9 20.52 418 2.42 209.92
78.55 20.65 77.52 36.9 7.347 421 -- -- -- 13.08 19.21 0.206 427
2.85 36.72 50.74 4.16 8.44 23.0 0.440 437 -- -- -- 4.21 4.43 0.128
438 2.14 9.05 7.46 0.39 1.86 20.6 0.316
[1570] From the foregoing, it will be observed that numerous
modifications and variations can be effectuated without departing
from the true spirit and scope of the novel concepts of the present
invention. It is to be understood that no limitation with respect
to the specific example presented is intended or should be
inferred. The disclosure is intended to cover by the appended
claims all such modifications as fall within the scope of the
claims.
* * * * *