U.S. patent application number 10/076576 was filed with the patent office on 2002-09-12 for new compounds, their preparation and use.
Invention is credited to Bury, Paul Stanley, Jeppesen, Lone, Murray, Anthony, Sauerberg, Per.
Application Number | 20020128260 10/076576 |
Document ID | / |
Family ID | 27220765 |
Filed Date | 2002-09-12 |
United States Patent
Application |
20020128260 |
Kind Code |
A1 |
Jeppesen, Lone ; et
al. |
September 12, 2002 |
New compounds, their preparation and use
Abstract
The present invention relates to compounds of the general
formula (I) 1 The compounds are useful in the treatment and/or
prevention of conditions mediated by nuclear receptors, in
particular the Peroxisome Proliferator-Activated Receptors
(PPAR).
Inventors: |
Jeppesen, Lone; (Virum,
DK) ; Sauerberg, Per; (Farum, DK) ; Murray,
Anthony; (Hellerup, DK) ; Bury, Paul Stanley;
(Kobenhavn NV, DK) |
Correspondence
Address: |
Reza Green, Esq.
Novo Nordisk of North America, Inc.
405 Lexington Avenue, Suite 6400
New York
NY
10174-6401
US
|
Family ID: |
27220765 |
Appl. No.: |
10/076576 |
Filed: |
February 8, 2002 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10076576 |
Feb 8, 2002 |
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09551701 |
Apr 18, 2000 |
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6369055 |
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60133089 |
May 7, 1999 |
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Current U.S.
Class: |
514/217 ;
514/220; 540/557; 540/591 |
Current CPC
Class: |
C07D 265/38
20130101 |
Class at
Publication: |
514/217 ;
514/220; 540/557; 540/591 |
International
Class: |
A61K 031/551; A61K
031/55; C07D 487/12 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 20, 1999 |
DK |
PA 1999 00534 |
Claims
Claims:
1. A compound of formula (I) 15wherein ring A and ring B, fused to
the ring containing X and T, independently of each other represents
a 5-6 membered cyclic ring, optionally substituted with one or more
halogen, perhalomethyl, hydroxy, nitro, cyano, formyl, or
C.sub.1-12-alkyl, C.sub.4- 12-alkenynyl, C.sub.2-12-alkenyl,
C.sub.2-12-alkynyl, C.sub.1-12-alkoxy, aryloxy, arylalkyl,
arylalkoxy, heteroarylalkyl, heteroaryloxy, heteroarylalkoxy, acyl,
acyloxy, hydroxyC.sub.1-12-alkyl, amino, acylamino,
C.sub.1-12-alkyl-amino, arylamino, arylalkylamino,
amino-C.sub.1-12-alkyl, C.sub.1-12-alkoxycarbonyl, aryloxycarbonyl,
arylalkoxycarbonyl, C.sub.1-12-alkoxyC.sub.1-12alkyl,
aryloxyC.sub.1-12-alkyl, arylalkoxyC.sub.1-12-alkyl,
C.sub.1-12-alkylthio, thioC.sub.1-12-alkyl,
C.sub.1-12-alkoxycarbonylamin- o, aryloxycarbonylamino,
arylalkoxycarbonylamino, bicycloalkyl,
(C.sub.3-6-cycloalkyl)C.sub.1-6-alkyl, C.sub.1-6-dialkylamino,
C.sub.1-6-alkylsulfonyl, C.sub.1-6-monoalkylaminosulfonyl,
C.sub.1-6-dialkylaminosulfonyl, arylthio, arylsulfonyl,
C.sub.1-6-monoalkylaminocarbonyl, C.sub.1-6dialkylaminocarbonyl,
--COR.sup.6 or --SO.sub.2R.sup.7, wherein R.sup.6 and R.sup.7
independently of each other are selected from hydroxy, halogen,
perhalomethyl, C.sub.1-6-alkoxy or amino optionally substituted
with one or more C.sub.1-6-alkyl or perhalomethyl; or aryl ,
wherein the aryl optionally can be substituted with one or more
halogen, perhalomethyl, hydroxy, nitro or cyano; or heteroaryl,
wherein the heteroaryl optionally can be substituted with halogen,
amino hydroxy, C.sub.1-6-alkyl or C.sub.1-6-alkoxy; or
heterocyclyl, wherein the heterocyclyl optionally can be
substituted with halogen, amino, hydroxy, C.sub.1-6-alkyl or
C.sub.1-6-alkoxy; X is --O--, --S--or --(CHR.sup.8)- wherein
R.sup.8 is hydrogen, halogen, hydroxy, nitro, cyano, formyl,
C.sub.1-12-alkyl, C.sub.1-12-alkoxy, aryl, aryloxy, arylalkyl,
arylalkoxy, heterocyclyl, heteroaryl, heteroarylalkyl,
heteroaryloxy, heteroarylalkoxy, acyl, acyloxy, hydroxyalkyl,
amino, acylamino, C.sub.1-12-alkyl-amino, arylamino,
arylalkylamino, aminoC.sub.1-12-alkyl, C.sub.1-12-alkoxycarbon- yl,
aryloxycarbonyl, arylalkoxycarbonyl,
C.sub.1-12-alkoxyC.sub.1-12-alkyl- , aryloxyC.sub.1-12-alkyl,
arylalkoxyC.sub.1-12-alkyl, C.sub.1-12-alkylthio,
thioC.sub.1-12-alkyl, C.sub.1-12-alkoxycarbonylamin- o,
aryloxycarbonylamino, arylalkoxycarbonylamino, --COR.sup.9 or
--SO.sub.2R.sup.10, wherein R.sup.9 and R.sup.10 independently of
each other are selected from hydroxy, halogen, C.sub.1-6-alkoxy,
amino optionally substituted with one or more C.sub.1-6-alkyl,
perhalomethyl or aryl; T is N or CR.sup.14, wherein R.sup.14 is
hydrogen, C.sub.1-12-alkoxy, C.sub.1-12-alkyl,
C.sub.4-12-alkenynyl, C.sub.2-12-alkenyl, C.sub.2-12-alkynyl, aryl
or arylalkyl; Y is C, O, S, CO, SO, SO.sub.2 or NR.sup.11, wherein
R.sup.11 is hydrogen, C.sub.1-6-alkyl; k is 1 or 2; represents a
single or a double bond; Ar represents arylene, heteroarylene, or a
divalent heterocyclic group each of which can optionally be
substituted with one or more halogen,C.sub.1-6-alkyl, amino,
hydroxy, C.sub.1-6-alkoxy or aryl; R.sup.1 represents hydrogen,
hydroxy, halogen, C.sub.1-12-alkoxy, C.sub.1-12-alkyl,
C.sub.4-12-alkenynyl, C.sub.2-12-alkenyl, C.sub.2-12-alkynyl or
arylalkyl; optionally substituted with one or more halogen,
perhalomethyl, hydroxy, nitro or cyano; R.sup.2 represents
hydrogen, hydroxy, halogen, C.sub.1-12-alkoxy, C.sub.1-12-alkyl,
C.sub.4-12-alkenynyl, C.sub.2-12-alkenyl, C.sub.2-12-alkynyl or
arylalkyl; optionally substituted with one or more halogen,
perhalomethyl, hydroxy, nitro or cyano; or R.sup.2 forms a bond
together with R.sup.3; R.sup.3 represents hydrogen, hydroxy,
halogen, C.sub.1-12-alkoxy, C.sub.1-12-alkyl, C.sub.4-12-alkenynyl,
C.sub.2-12-alkenyl, C.sub.2-12-alkynyl, acyl or arylalkyl;
optionally substituted with one or more halogen, perhalomethyl,
hydroxy, nitro or cyano; or R.sup.3 forms a bond together with
R.sup.2; R.sup.4 represents hydrogen, C.sub.1-12-alkyl,
C.sub.4-12-alkenynyl, C.sub.2-12-alkenyl, C.sub.2-12-alkynyl, aryl,
arylalkyl, heterocyclyl, heteroaryl or heteroarylalkyl groups;
optionally substituted with one or more halogen, perhalomethyl,
hydroxy, nitro or cyano; R.sup.5 represents hydrogen,
C.sub.1-12-alkyl, C.sub.4-12-alkenynyl, C.sub.2-12-alkenyl,
C.sub.2-12-alkynyl, aryl, arylalkyl, heterocyclyl, heteroaryl or
heteroarylalkyl groups; optionally substituted with one or more
halogen, perhalomethyl, hydroxy, nitro or cyano; Z represents
oxygen or NR.sup.12, wherein R.sup.12 represents hydrogen
C.sub.1-12-alkyl, aryl, hydroxyC.sub.1-12 -alkyl or arylalkyl
groups or when Z is NR .sup.12, R.sup.4 and R.sup.12 may form a 5
or 6 membered nitrogen containing ring, optionally substituted with
one or more C.sub.1-6-alkyl; Q represents oxygen or NR.sup.13,
wherein R.sup.13 represents hydrogen C.sub.1-12-alkyl, aryl,
hydroxyC.sub.1-12 -alkyl or arylalkyl groups or when Q is
NR.sup.13, R.sup.5 and R.sup.13 may form a 5 or 6 membered nitrogen
containing ring, optionally substituted with one or more
C.sub.1-6-alkyl; n is an integer ranging from 0 to 3; m is an
integer ranging from 0 to 1; p is an integer ranging from 0 to 1;
or a salt thereof with a pharmaceutically acceptable acid or base,
or any optical isomer or mixture of optical isomers, including a
racemic mixture, or any tautomeric forms.
2. A compound according to claim 1 wherein ring A and ring B, fused
to the ring containing X and T independently of each other
represents a 5-6 membered cyclic ring, optionally substituted with
halogen, C.sub.1-6-alkyl or aryl, wherein the aryl can be
substituted with one or more halogen or C.sub.1-6-alkyl; or
heterocyclyl, wherein the heterocyclyl can be substituted with
C.sub.1-6-alkyl.
3. A compound according to any one of the preceding claims wherein
ring A and ring B, fused to the ring containing X and T
independently of each other represents a 5-6 membered cyclic
ring.
4. A compound according to any one of the preceding claims wherein
ring A and ring B, fused to the ring containing X and T
independently of each other represents aryl.
5. A compound according to any one of the preceding claims wherein
X is O.
6. A compound according to any one of the preceding claims wherein
T is N.
7. A compound according to any one of the preceding claims wherein
k is 2.
8. A compound according to any one of the preceding claims wherein
represents a single bond.
9. A compound according to any one of the preceding claims wherein
Ar represents arylene.
10. A compound according to any one of the preceding claims wherein
R.sup.1, R.sup.2 and R.sup.3 represents hydrogen.
11. A compound according to any one of the preceding claims wherein
R.sup.4 and R.sup.5 represents hydrogen or methyl.
12. A compound according to any one of the preceding claims wherein
Z and Q represents O.
13. A compound according to any one of the preceding claims wherein
n is 1.
14. A compound according to any one of the preceding claims wherein
m is 1.
15. A compound according to any one of the preceding claims wherein
p is 0.
16. The compound according to claim 1 which is
2-{4-(2-Phenoxazine-10-yl-e- thoxy)-benzyl]-malonic acid dimethyl
ester, 2-{4-(2-Phenoxazine-10-yl-etho- xy)-benzyl]-malonic acid; or
a salt thereof with a pharmaceutically acceptable acid or base, or
any optical isomer or mixture of optical isomers, including a
racemic mixture, or any tautomeric forms.
17. A pharmaceutical composition comprising, as an active
ingredient, a compound according to any one of the preceding
compound claims or a pharmaceutically acceptable salt thereof
together with a pharmaceutically acceptable carrier or diluent.
18. A composition according to claim 17 in unit dosage form,
comprising from about 0.05 to about 100 mg, preferably from about
0.1 to about 50 mg of the compound according to any one of the
preceding compound claims or a pharmaceutically acceptable salt
thereof.
19. A pharmaceutical composition useful in the treatment and/or
prevention of conditions mediated by nuclear receptors, in
particular the Peroxisome Proliferator-Activated Receptors (PPAR),
the composition comprising, as an active ingredient, a compound
according to any one of the preceding compound claims or a
pharmaceutically acceptable salt thereof together with a
pharmaceutically acceptable carrier or diluent.
20. A pharmaceutical composition useful in the treatment and/or
prevention of diabetes and/or obesity, the composition comprising,
as an active ingredient, a compound according to any one of the
preceding compound claims or a pharmaceutically acceptable salt
thereof together with a pharmaceutically acceptable carrier or
diluent.
21. A pharmaceutical composition according to any one of the claims
17- 20 for oral, nasal, transdermal, pulmonary, or parenteral
administration.
22. A method for the treatment of ailments, the method comprising
administering to a subject in need thereof an effective amount of a
compound according to any one of the preceding compound claims or a
pharmaceutically acceptable salt thereof, or of a composition
according to any one of the preceding claims 17- 21.
23. A method for the treatment and/or prevention of conditions
mediated by nuclear receptors, in particular the Peroxisome
Proliferator-Activated Receptors (PPAR), the method comprising
administering to a subject in need thereof an effective amount of a
compound according to any one of the preceding compound claims or a
pharmaceutically acceptable salt thereof, or of a composition
according to any one of the preceding claims 17- 21.
24. A method for the treatment and/or prevention of diabetes and/or
obesity, the method comprising administering to a subject in need
thereof an effective amount of a compound according to any one of
the preceding compound claims or a pharmaceutically acceptable salt
thereof, or of a composition according to any one of the preceding
claims 17-21.
25. The method according to claims 22, 23 or 24, wherein the
effective amount of the compound according to any one of the
preceding compound claims or a pharmaceutically acceptable salt or
ester thereof is in the range of from about 0.05 to about 100 mg
per day, preferably from about 0.1 to about 50 mg per day.
26. Use of a compound according to any one of the preceding
compound claims or a pharmaceutically acceptable salt thereof for
the preparation of a medicament.
27. Use of a compound according to any one of the preceding
compound claims or a pharmaceutically acceptable salt thereof for
the preparation of a medicament useful in the treatment and/or
prevention of conditions mediated by nuclear receptors, in
particular the Peroxisome Proliferator-Activated Receptors
(PPAR).
28. Use of a compound according to any one of the preceding
compound claims or a pharmaceutically acceptable salt thereof for
the preparation of a medicament for treatment and/or prevention of
diabetes and/or obesity.
Description
FIELD OF INVENTION
[0001] The present invention relates to novel compounds,
pharmaceutical compositions containing them, methods for preparing
the compounds and their use as medicaments. More specifically,
compounds of the invention can be utilised in the treatment and/or
prevention of conditions mediated by nuclear receptors, in
particular the Peroxisome Proliferator-Activated Receptors
(PPAR).
BACKGROUND OF THE INVENTION
[0002] Coronary artery disease (CAD) is the major cause of death in
Type 2 diabetic and metabolic syndrome patients (i.e. patients that
fall within the `deadly quartet` category of impaired glucose
tolerance, insulin resistance, hypertriglyceridaemia and/or
obesity).
[0003] The hypolipidaemic fibrates and antidiabetic
thiazolidinediones separately display moderately effective
triglyceride-lowering activities although they are neither potent
nor efficacious enough to be a single therapy of choice for the
dyslipidaemia often observed in Type 2 diabetic or metabolic
syndrome patients. The thiazolidinediones also potently lower
circulating glucose levels of Type 2 diabetic animal models and
humans. However, the fibrate class of compounds are without
beneficial effects on glycaemia. Studies on the molecular actions
of these compounds indicate that thiazolidinediones and fibrates
exert their action by activating distinct transcription factors of
the peroxisome proliferator activated receptor (PPAR) family,
resulting in increased and decreased expression of specific enzymes
and apolipoproteins respectively, both key-players in regulation of
plasma triglyceride content. Fibrates, on the one hand, are
PPAR.alpha. activators, acting primarily in the liver.
Thiazolidinediones, on the other hand, are high affinity ligands
for PPAR.gamma. acting primarily on adipose tissue.
[0004] Adipose tissue plays a central role in lipid homeostasis and
the maintenance of energy balance in vertebrates. Adipocytes store
energy in the form of triglycerides during periods of nutritional
affluence and release it in the form of free fatty acids at times
of nutritional deprivation. The development of white adipose tissue
is the result of a continuous differentiation process throughout
life. Much evidence points to the central role of PPAR.gamma.
activation in initiating and regulating this cell differentiation.
Several highly specialised proteins are induced during adipocyte
differentiation, most of them being involved in lipid storage and
metabolism. The exact link from activation of PPAR.gamma. to
changes in glucose metabolism, most notably a decrease in insulin
resistance in muscle, has not yet been clarified. A possible link
is via free fatty acids such that activation of PPAR.gamma. induces
Lipoprotein Lipase (LPL), Fatty Acid Transport Protein (FATP) and
Acyl-CoA Synthetase (ACS) in adipose tissue but not in muscle
tissue. This, in turn, reduces the concentration of free fatty
acids in plasma dramatically, and due to substrate competition at
the cellular level, skeletal muscle and other tissues with high
metabolic rates eventually switch from fatty acid oxidation to
glucose oxidation with decreased insulin resistance as a
consequence.
[0005] PPAR.alpha. is involved in stimulating .beta.-oxidation of
fatty acids. In rodents, a PPAR.alpha.-mediated change in the
expression of genes involved in fatty acid metabolism lies at the
basis of the phenomenon of peroxisome proliferation, a pleiotropic
cellular response, mainly limited to liver and kidney and which can
lead to hepatocarcinogenesis in rodents. The phenomenon of
peroxisome proliferation is not seen in man. In addition to its
role in peroxisome proliferation in rodents, PPAR.alpha. is also
involved in the control of HDL cholesterol levels in rodents and
humans. This effect is, at least partially, based on a
PPAR.alpha.-mediated transcriptional regulation of the major HDL
apolipoproteins, apo A-I and apo A-II. The hypotriglyceridemic
action of fibrates and fatty acids also involves PPAR.alpha. and
can be summarised as follows: (I) an increased lipolysis and
clearance of remnant particles, due to changes in lipoprotein
lipase and apo C-III levels, (II) a stimulation of cellular fatty
acid uptake and their subsequent conversion to acyl-CoA derivatives
by the induction of fatty acid binding protein and acyl-CoA
synthase, (III) an induction of fatty acid -oxidation pathways,
(IV) a reduction in fatty acid and triglyceride synthesis, and
finally (V) a decrease in VLDL production. Hence, both enhanced
catabolism of triglyceride-rich particles as well as reduced
secretion of VLDL particles constitutes mechanisms that contribute
to the hypolipidemic effect of fibrates.
[0006] A number of compounds have been reported to be useful in the
treatment of hyperglycemia, hyperlipidemia and hypercholesterolemia
(U.S. Pat. Nos. 5,306,726, PCT Publications nos. WO91/19702, WO
95/03038, WO 96/04260, WO 94/13650, WO 94/01420, WO 97/36579, WO
97/25042, WO 95/17394, WO 99/08501, WO 99/19313 and WO
99/16758).
SUMMARY OF THE INVENTION
[0007] Glucose lowering as a single approach does not overcome the
macrovascular complications associated with Type 2 diabetes and
metabolic syndrome. Novel treatments of Type 2 diabetes and
metabolic syndrome must therefore aim at lowering both the overt
hypertriglyceridaemia associated with these syndromes as well as
alleviation of hyperglycaemia.
[0008] The clinical activity of fibrates and thiazolidinediones
indicates that research for compounds displaying combined
PPAR.alpha. and PPAR.gamma. activation should lead to the discovery
of efficacious glucose and triglyceride lowering drugs that have
great potential in the treatment of Type 2 diabetes and the
metabolic syndrome (i.e. impaired glucose tolerance, insulin
resistance, hypertriglyceridaemia and/or obesity).
DETAILED DESCRIPTION OF THE INVENTION
[0009] Accordingly, the present invention relates to compounds of
the general formula (I): 2
[0010] wherein ring A and ring B, fused to the ring containing X
and T, independently of each other represents a 5-6 membered cyclic
ring, optionally substituted with one or more halogen,
perhalomethyl, hydroxy, nitro, cyano, formyl, or C.sub.1-12-alkyl,
C.sub.4-12-alkenynyl, C.sub.2-12-alkenyl, C.sub.2-12-alkynyl,
C.sub.1-12-alkoxy, aryloxy, arylalkyl, arylalkoxy, heteroarylalkyl,
heteroaryloxy, heteroarylalkoxy, acyl, acyloxy,
hydroxyC.sub.1-12-alkyl, amino, acylamino, C.sub.1-12-alkyl-amino,
arylamino, arylalkylamino, amino-C.sub.1-12-alkyl,
C.sub.1-12-alkoxycarbonyl, aryloxycarbonyl, arylalkoxycarbonyl,
C.sub.1-12-alkoxyC,.sub.1-12-alkyl, aryloxyC.sub.1-12-alkyl,
arylalkoxyC.sub.1-12-alkyl, C.sub.1-12-alkylthio,
thioC.sub.1-12-alkyl, C.sub.1-12alkoxycarbonylamino- ,
aryloxycarbonylamino, arylalkoxycarbonylamino, bicycloalkyl,
(C.sub.3-6-cycloalkyl)C.sub.1-6-alkyl, C.sub.1-6-dialkylamino,
C.sub.1-6-alkylsulfonyl, C.sub.1-6-monoalkylaminosulfonyl,
C.sub.1-6-dialkylaminosulfonyl, arylthio, arylsulfonyl,
C.sub.1-6-monoalkylaminocarbonyl, C.sub.1-6-dialkylaminocarbonyl,
--COR.sup.6 or --SO.sub.2R.sup.7, wherein R.sup.6 and R.sup.7
independently of each other are selected from hydroxy, halogen,
perhalomethyl, C.sub.1-6-alkoxy or amino optionally substituted
with one or more C.sub.1-6-alkyl or perhalomethyl; or aryl ,
wherein the aryl optionally can be substituted with one or more
halogen, perhalomethyl, hydroxy, nitro or cyano; or heteroaryl,
wherein the heteroaryl optionally can be substituted with halogen,
amino hydroxy, C.sub.1-6-alkyl or C.sub.1-6-alkoxy; or
heterocyclyl, wherein the heterocyclyl optionally can be
substituted with halogen, amino, hydroxy, C.sub.1-6-alkyl or
C.sub.1-6-alkoxy;
[0011] X is --O--,--S-- or --(NR.sup.8)-- wherein R.sup.8 is
hydrogen, halogen, hydroxy, nitro, cyano, formyl, C.sub.1-12-alkyl,
C.sub.1-12-alkoxy, aryl, aryloxy, arylalkyl, arylalkoxy,
heterocyclyl, heteroaryl, heteroarylalkyl, heteroaryloxy,
heteroarylalkoxy, acyl, acyloxy, hydroxyalkyl, amino, acylamino,
C.sub.1-12-alkyl-amino, arylamino, arylalkylamino,
aminoC.sub.1-12-alkyl, C.sub.1-12-alkoxycarbon- yl,
aryloxycarbonyl, arylalkoxycarbonyl,
C.sub.1-12-alkoxyC.sub.1-12-alkyl- , aryloxyC.sub.1-12-alkyl,
arylalkoxyC.sub.1-12-alkyl, C.sub.1-12-alkylthio,
thioC.sub.1-12-alkyl, C.sub.1-12-alkoxycarbonylamin- o,
aryloxycarbonylamino, arylalkoxycarbonylamino, --COR.sup.9 or
--SO.sub.2R.sup.10, wherein R.sup.9 and R.sup.10 independently of
each other are selected from hydroxy, halogen, C.sub.1-6-alkoxy,
amino optionally substituted with one or more C.sub.1-6 alkyl,
perhalomethyl or aryl;
[0012] T is N or CR.sup.14 ,wherein R.sup.14 is hydrogen,
C.sub.1-12-alkoxy, C.sub.1-12-alkyl, C.sub.4-12-alkenynyl,
C.sub.2-12-alkenyl, C.sub.2-12-alkynyl, aryl or arylalkyl;
[0013] Y is C, O, S, CO, SO, SO.sub.2 or NR.sup.11, wherein
R.sup.11 is hydrogen, C.sub.1-6-alkyl;
[0014] k is 1 or 2;
[0015] Ar represents arylene, heteroarylene, or a divalent
heterocyclic group each of which can optionally be substituted with
one or more halogen,C.sub.1-6-alkyl, amino, hydroxy,
C.sub.1-6-alkoxy or aryl;
[0016] R.sup.1represents hydrogen, hydroxy, halogen,
C.sub.1-12-alkoxy, C.sub.1-12-alkyl, C.sub.4-12-alkenynyl,
C.sub.2-12-alkenyl, C.sub.2-12-alkynyl or arylalkyl; optionally
substituted with one or more halogen, perhalomethyl, hydroxy, nitro
or cyano;
[0017] R.sup.2 represents hydrogen, hydroxy, halogen,
C.sub.1-12-alkoxy, C.sub.1-12-alkyl, C.sub.4-12-alkenynyl,
C.sub.2-12-alkenyl, C.sub.2-12-alkynyl or arylalkyl; optionally
substituted with one or more halogen, perhalomethyl, hydroxy, nitro
or cyano; or R.sup.2 forms a bond together with R.sup.3;
[0018] R.sup.3 represents hydrogen, hydroxy, halogen,
C.sub.1-12-alkoxy, C.sub.1-12-alkyl, C.sub.4-12-alkenynyl,
C.sub.2-12-alkenyl, C.sub.2-12-alkynyl, acyl or arylalkyl;
optionally substituted with one or more halogen, perhalomethyl,
hydroxy, nitro or cyano; or R.sup.3 forms a bond together with
R.sup.2;
[0019] R.sup.4 represents hydrogen, C.sub.1-12-alkyl,
C.sub.4-12-alkenynyl, C.sub.2-12-alkenyl, C.sub.2-12-alkynyl, aryl,
arylalkyl, heterocyclyl, heteroaryl or heteroarylalkyl groups;
optionally substituted with one or more halogen, perhalomethyl,
hydroxy, nitro or cyano;
[0020] R.sup.5 represents hydrogen, C.sub.1-12-alkyl,
C.sub.4-12-alkenynyl, C.sub.2-12-alkenyl, C.sub.2-12-alkynyl, aryl,
arylalkyl, heterocyclyl, heteroaryl or heteroarylalkyl groups;
optionally substituted with one or more halogen, perhalomethyl,
hydroxy, nitro or cyano;
[0021] Z represents oxygen or NR.sup.12, wherein R.sup.12
represents hydrogen C.sub.1-12-alkyl, aryl, hydroxyC.sub.1-12
-alkyl or arylalkyl groups or when Z is NR.sup.2, R.sup.4 and
R.sup.12 may form a 5 or 6 membered nitrogen containing ring,
optionally substituted with one or more C.sub.1-6-alkyl;
[0022] Q represents oxygen or NR.sup.13, wherein R.sup.13
represents hydrogen C.sub.1-12-alkyl, aryl, hydroxyC, .sub.1-12
-alkyl or arylalkyl groups or when Q is NR.sup.13, R.sup.5 and
R.sup.13 may form a 5 or 6 membered nitrogen containing ring,
optionally substituted with one or more C.sub.1-6-alkyl;
[0023] n is an integer ranging from 0 to 3;
[0024] m is an integer ranging from 0 to 1;
[0025] p is an integer ranging from 0 to 1;
[0026] or a salt thereof with a pharmaceutically acceptable acid or
base, or any optical isomer or mixture of optical isomers,
including a racemic mixture, or any tautomeric forms.
[0027] In a preferred embodiment, the present invention is
concerned with compounds of formula I wherein ring A and ring B,
fused to the ring containing X and T independently of each other
represents a 5-6 membered cyclic ring, optionally substituted with
halogen, C.sub.1-6-alkyl or aryl, wherein the aryl can be
substituted with one or more halogen or C.sub.1-6-alkyl; or
heterocyclyl, wherein the heterocyclyl can be substituted with
C.sub.1-6-alkyl.
[0028] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein ring A and ring B,
fused to the ring containing X and T independently of each other
represents a 5-6 membered cyclic ring.
[0029] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein ring A and ring B,
fused to the ring containing X and T independently of each other
represents aryl.
[0030] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein X is O.
[0031] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein T is N.
[0032] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein k is 2.
[0033] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein represents a single
bond.
[0034] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein Ar represents
arylene.
[0035] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein R.sup.1, R.sup.2 and
R.sup.3 represents hydrogen.
[0036] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein R.sup.4 and R.sup.5
represents hydrogen or methyl.
[0037] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein Z and Q represents
O.
[0038] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein n is 1.
[0039] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein m is 1.
[0040] In another preferred embodiment, the present invention is
concerned with compounds of formula I wherein p is 0.
[0041] Preferred compounds of the invention are:
[0042] 2-{4-(2-Phenoxazine-10-yl-ethoxy)-benzyl]-malonic acid
dimethyl ester,
[0043] 2-{4-(2-Phenoxazine-10-yl-ethoxy)-benzyl]-malonic acid;
[0044] or a salt thereof with a pharmaceutically acceptable acid or
base, or any optical isomer or mixture of optical isomers,
including a racemic mixture, or any tautomeric forms.
[0045] In the above structural formulas and throughout the present
specification, the following terms have the indicated meaning:
[0046] The terms "C.sub.1-12-alkyl" as used herein, alone or in
combination is intended to include those alkyl groups of the
designated length in either a linear or branched or cyclic
configuration. represents e.g. cyclopropyl, cyclobutyl,
cyclopentyl, cyclohexyl, cycloheptyl and cyclooctyl and the like.
Typical C.sub.1-6-alkyl groups include, but are not limited to,
methyl, ethyl, n-propyl, iso-propyl, butyl, iso-butyl, sec-butyl,
tert-butyl, pentyl, iso-pentyl, hexyl, iso-hexyl, cyclopropyl,
cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl and cyclooctyl and
the like.
[0047] The terms "C.sub.2-n'-alkenyl" wherein n' can be from 3
through 15, as used herein, represents an olefinically unsaturated
branched or straight group having from 2 to the specified number of
carbon atoms and at least one double bond. Examples of such groups
include, but are not limited to, vinyl, 1-propenyl, 2-propenyl,
allyl, iso-proppenyl, 1,3-butadienyl, 1-butenyl, hexenyl, pentenyl
and the like.
[0048] The terms "C.sub.2-n'-alkynyl" wherein n' can be from 3
through 15, as used herein, represent an unsaturated branched or
straight group having from 2 to the specified number of carbon
atoms and at least one triple bond. Examples of such groups
include, but are not limited to, 1-propynyl, 2-propynyl, 1-butynyl,
2-butynyl, 1-pentynyl, 2-pentynyl and the like.
[0049] The terms "C.sub.4-n'-alkenynyl" wherein n' can be from 5
through 15, as used herein, represent an unsaturated branched or
straight hydrocarbon group having from 4 to the specified number of
carbon atoms and both at least one double bond and at least one
triple bond. Examples of such groups include, but are not limited
to, 1-penten-4-yne, 3-penten-1-yne, 1,3-hexadiene-5-yne and the
like.
[0050] The term "C.sub.1-12-alkoxy" as used herein, alone or in
combination is intended to include those C .sub.1-12-alkyl groups
of the designated length in either a linear or branched or cyclic
configuration linked thorugh an ether oxygen having its free
valence bond from the ether oxygen. Examples of linear alkoxy
groups are methoxy, ethoxy, propoxy, butoxy, pentoxy, hexoxy and
the like. Examples of branched alkoxy are isoprpoxy, sec-butoxy,
tert-butoxy, isopentoxy, isohexoxy and the like. Examples of cyclic
alkoxy are cyclopropyloxy, cyclobutyloxy, cyclopentyloxy,
cyclohexyloxy and the like.
[0051] The term "C.sub.1-12-alkylthio" as used herein, alone or in
combination, refers to a straight or branched or cyclic monovalent
substituent comprising a C.sub.1-12-alkyl group linked through a
divalent sulfur atom having its free valence bond from the sulfur
atom and having 1 to 12 carbon atoms e.g. methylthio, ethylthio,
propylthio, butylthio, pentylthio and the like. Examples of cyclic
alkylthio are cyclopropylthio, cyclobutylthio, cyclopentylthio,
cyclohexylthio and the like.
[0052] The term "C.sub.1-12-alkylamino" as used herein, alone or in
combination, refers to a straight or branched or cyclic monovalent
substituent comprising a C.sub.1-12-alkyl group linked through
amino having a free valence bond from the nitrogen atom e.g.
methylamino, ethylamino, propylamino, butylamino, pentylamino and
the like. Examples of cyclic alkylamino are cyclopropylamino,
cyclobutylamino, cyclopentylamino, cyclohexylamino and the
like.
[0053] The term "hydroxyC.sub.1-12-alkyl" as used herein, alone or
in combination, refers to a C .sub.1-12-alkyl as defined herein
whereto is attached a hydroxy group, e.g. hydroxyethyl,
1-hydroxypropyl, 2-hydroxypropyl and the like.
[0054] The term "arylamino" as used herein, alone or in
combination, refers to an aryl as defined herein linked through
amino having a free valence bond from the nitrogen atom e.g.
phenylamino, naphthylamino and the like.
[0055] The term "arylalkylamino" as used herein, alone or in
combination, refers to an arylalkyl as defined herein linked
through amino having a free valence bond from the nitrogen atom
e.g. benzylamino, phenethylamino, 3-phenylpropylamino,
1-naphtylmethylamino, 2-(1-naphtyl)ethylamino and the like.
[0056] The term "aminoC.sub.1-12-alkyl" as used herein, alone or in
combination, refers to a C.sub.1-12-alkyl as defined herein whereto
is attached an amino group, e.g. aminoethyl, 1-aminopropyl,
2-aminopropyl and the like.
[0057] The term "aryloxycarbonyl" as used herein, alone or in
combination, refers to an aryloxy as defined herein linked through
a carbonyl having a free valence bond from the carbon atom, e.g.
phenoxycarbonyl, 1-naphthyloxycarbonyl or 2-naphthyloxycarbonyl and
the like.
[0058] The term "arylalkoxycarbonyl" as used herein, alone or in
combination, refers to an arylalkoxy as defined herein linked
through a carbonyl having a free valence bond from the carbon atom,
e.g. benzyloxycarbonyl, phenethoxycarbonyl,
3-phenylpropoxycarbonyl, 1-naphthylmethoxycarbonyl,
2-(l-naphtyl)ethoxycarbonyl and the like.
[0059] The term "C.sub.1-12-alkoxyC.sub.1-12-alkyl" as used herein,
alone or in combination, refers to a C.sub.1-12-alkyl as defined
herein whereto is attached a C.sub.1-12-alkoxy as defined herein,
e.g. methoxymethyl, ethoxymethyl, methoxyethyl, ethoxyethyl and the
like.
[0060] The term "aryloxyC.sub.1-12-alkyl" as used herein, alone or
in combination, refers to a C.sub.1-12-alkyl as defined herein
whereto is attached an aryloxy as defined herein, e.g.
phenoxymethyl, phenoxydodecyl, 1-naphthyloxyethyl,
2-naphthyloxypropyl and the like.
[0061] The term "arylalkoxyC.sub.1-12-alkyl" as used herein, alone
or in combination, refers to a C.sub.1-12-alkyl as defined herein
whereto is attached an arylalkoxy as defined herein, e.g.
benzyloxymethyl, phenethoxydodecyl, 3-phenylpropoxyethyl, 1
-naphthylmethoxypropyl, 2-(1-naphtyl)ethoxymethyl and the like.
[0062] The term "thioC.sub.1-12-alkyl" as used herein, alone or in
combination, refers to a C.sub.1-12-alkyl as defined herein whereto
is attached a group of formula --SR'" wherein R'" is hydrogen,
C.sub.1-6-alkyl or aryl, e.g. thiomethyl, methylthiomethyl,
phenylthioethyl and the like.
[0063] The term "C.sub.1-12-alkoxycarbonylamino" as used herein,
alone or in combination, refers to a C .sub.1-12-alkoxycarbonyl as
defined herein linked through amino having a free valence bond from
the nitrogen atom e.g. methoxycarbonylamino, carbethoxyamino,
propoxycarbonylamino, isopropoxycarbonylamino,
n-butoxycarbonylamino, tert-butoxycarbonylamino and the like.
[0064] The term "aryloxycarbonylamino" as used herein, alone or in
combination, refers to an aryloxycarbonyl as defined herein linked
through amino having a free valence bond from the nitrogen atom
e.g. phenoxycarbonylamino, 1-naphthyloxycarbonylamino or
2-naphthyloxycarbonylamino and the like.
[0065] The term "arylalkoxycarbonylamino" as used herein, alone or
in combination, refers to an arylalkoxycarbonyl as defined herein
linked through amino having a free valence bond from the nitrogen
atom e.g. benzyloxycarbonylamino, phenethoxycarbonylamino,
3-phenylpropoxycarbonyla- mino, 1-naphthylmethoxycarbonylamino,
2-(1-naphtyl)ethoxycarbonylamino and the like.
[0066] The term "aryl" is intended to include aromatic rings, such
as carboxylic aromatic rings selected from the group consisting of
phenyl, naphthyl, (1-naphtyl or 2-naphtyl) and the like optionally
substituted with halogen, amino, hydroxy, C.sub.1-6-alkyl or
C.sub.1-6-alkoxy and the like.
[0067] The term "arylene" is intended to include divalent aromatic
rings, such as carboxylic aromatic rings selected from the group
consisting of phenylene, naphthylene and the like optionally
substituted with halogen, amino, hydroxy, C.sub.1-6-alkyl or
C.sub.1-6-alkoxy and the like.
[0068] The term "halogen" means fluorine, chlorine, bromine or
iodine.
[0069] The term "perhalomethyl" means trifluoromethyl,
trichloromethyl, tribromomethyl or triiodomethyl.
[0070] The term "C.sub.1-6-dialkylamino" as used herein refers to
an amino group wherein the two hydrogen atoms independently are
substituted with a straight or branched, saturated hydrocarbon
chain having the indicated number of carbon atoms; such as
dimethylamino, N-ethyl-N-methylamino, diethylamino, dipropylamino,
N-(n-butyl)-N-methylamino, di(n-pentyl)amino and the like.
[0071] The term "acyl" as used herein refers to a monovalent
substituent comprising a C.sub.1-6-alkyl group linked through a
carbonyl group; such as e.g. acetyl, propionyl, butyryl,
isobutyryl, pivaloyl, valeryl and the like.
[0072] The term "acyloxy" as used herein refers to acyl as defined
herein linked to an oxygen atom having its free valence bond from
the oxygen atom e.g. acetyloxy, propionyloxy, butyryloxy,
isobutyryloxy, pivaloyloxy, valeryloxy and the like.
[0073] The term "C.sub.1-12-alkoxycarbonyl" as used herein refers
to a monovalent substituent comprising a C.sub.1-12-alkoxy group
linked through a carbonyl group; such as e.g. methoxycarbonyl,
carbethoxy, propoxycarbonyl, isopropoxycarbonyl, n-butoxycarbonyl,
sec-butoxycarbonyl, tert-butoxycarbonyl, 3-methylbutoxycarbonyl,
n-hexoxycarbonyl and the like.
[0074] The term "bicycloalkyl" as used herein refers to a
monovalent substituent comprising a bicyclic structure made of 6-12
carbon atoms such as e.g. 2-norbomyl, 7-norbornyl,
2-bicyclo[2.2.2]octyl and 9-bicyclo[3.3.1]nonanyl and the like.
[0075] The term "heteroaryl" as used herein, alone or in
combination, refers to a monovalent substituent comprising a 5-6
membered monocyclic aromatic system or a 9-10 membered bicyclic
aromatic system containing one or more heteroatoms selected from
nitrogen, oxygen and sulfur, e.g. furan, thiophene, pyrrole,
imidazole, pyrazole, triazole, pyridine, pyrazine, pyrimidine,
pyridazine, isothiazole, isoxazole, oxazole, oxadiazole,
thiadiazole, quinoline, isoquinoline, quinazoline, quinoxaline,
indole, benzimidazole, benzofuran, pteridine and purine and the
like.
[0076] The term "heteroarylene" as used herein, alone or in
combination, refers to a divalent group comprising a 5-6 membered
monocyclic aromatic system or a 9-10 membered bicyclic aromatic
system containing one or more heteroatoms selected from nitrogen,
oxygen and sulfur, e.g. furan, thiophene, pyrrole, imidazole,
pyrazole, triazole, pyridine, pyrazine, pyrimidine, pyridazine,
isothiazole, isoxazole, oxazole, oxadiazole, thiadiazole,
quinoline, isoquinoline, quinazoline, quinoxaline, indole,
benzimidazole, benzofuran, pteridine and purine and the like.
[0077] The term "heteroaryloxy" as used herein, alone or in
combination, refers to a heteroaryl as defined herein linked to an
oxygen atom having its free valence bond from the oxygen atom e.g.
pyrrole, imidazole, pyrazole, triazole, pyridine, pyrazine,
pyrimidine, pyridazine, isothiazole, isoxazole, oxazole,
oxadiazole, thiadiazole, quinoline, isoquinoline, quinazoline,
quinoxaline, indole, benzimidazole, benzofuran, pteridine and
purine linked to oxygen, and the like.
[0078] The term "arylalkyl" as used herein refers to a straight or
branched saturated carbon chain containing from 1 to 6 carbons
substituted with an aromatic carbohydride; such as benzyl,
phenethyl, 3-phenylpropyl, 1-naphtylmethyl, 2-(1-naphtyl)ethyl and
the like.
[0079] The term "aryloxy" as used herein refers to phenoxy,
1-naphthyloxy, 2-naphthyloxy and the like.
[0080] The term "arylalkoxy" as used herein refers to a
C.sub.1-6-alkoxy group substituted with an aromatic carbohydride,
such as benzyloxy, phenethoxy, 3-phenylpropoxy, 1-naphthylmethoxy,
2-(1-naphtyl)ethoxy and the like.
[0081] The term "heteroarylalkyl" as used herein refers to a
straight or branched saturated carbon chain containing from 1 to 6
carbons substituted with a heteroaryl group; such as
(2-furyl)methyl, (3-furyl)methyl, (2-thienyl)methyl,
(3-thienyl)methyl, (2-pyridyl)methyl, 1-methyl-1-(2-pyrimidyl)ethyl
and the like.
[0082] The term "heteroarylalkoxy" as used herein refers to a
heteroarylalkyl as defined herein linked to an oxygen atom having
its free valence bond from the oxygen atom, e.g. (2-furyl)methyl,
(3-furyl)methyl, (2-thienyl)methyl, (3-thienyl)methyl,
(2-pyridyl)methyl, 1-methyl-1-(2-pyrimidyl)ethyl linked to oxygen,
and the like.
[0083] The term "C.sub.1-6-alkylsulfonyl" as used herein refers to
a monovalent substituent comprising a C.sub.1-6-alkyl group linked
through a sulfonyl group such as e.g. methylsulfonyl,
ethylsulfonyl, n-propylsulfonyl, isopropylsulfonyl,
n-butylsulfonyl, sec-butylsulfonyl, isobutylsulfonyl,
tert-butylsulfonyl, n-pentylsulfonyl, 2-methylbutylsulfonyl,
3-methylbutylsulfonyl, n-hexylsulfonyl, 4-methylpentylsulfonyl,
neopentylsulfonyl, n-hexylsulfonyl, 2,2-dimethylpropylsulfonyl and
the like.
[0084] The term "C.sub.1-6-monoalkylaminosulfonyl" as used herein
refers to a monovalent substituent comprising a
C.sub.1-6monoalkylamino group linked through a sulfonyl group such
as e.g. methylaminosulfonyl, ethylaminosulfonyl,
n-propylaminosulfonyl, isopropylaminosulfonyl,
n-butylaminosulfonyl, sec-butylaminosulfonyl,
isobutylaminosulfonyl, tert-butylaminosulfonyl,
n-pentylaminosulfonyl, 2-methylbutylaminosulfony- l,
3-methylbutylaminosulfonyl, n-hexylaminosulfonyl,
4-methylpentylaminosulfonyl, neopentylaminosulfonyl,
n-hexylaminosulfonyl, 2,2-dimethylpropylaminosulfonyl and the
like.
[0085] The term "C.sub.1-6-dialkylaminosulfonyl" as used herein
refers to a monovalent substituent comprising a
C.sub.1-6-dialkylamino group linked through a sulfonyl group such
as dimethylaminosulfonyl, N-ethyl-N-methylaminosulfonyl,
diethylaminosulfonyl, dipropylaminosulfonyl,
N-(n-butyl)-N-methylaminosulfonyl, di(n-pentyl)aminosulfonyl and
the like.
[0086] The term "acylamino" as used herein refers to an amino group
wherein one of the hydrogen atoms is substituted with an acyl
group, such as e.g. acetamido, propionamido, isopropylcarbonylamino
and the like.
[0087] The term "(C.sub.3-6-cycloalkyl)C.sub.1-6-alkyl" as used
herein, alone or in combination, refers to a straight or branched,
saturated hydrocarbon chain having 1 to 6 carbon atoms and being
monosubstituted with a C.sub.3-6-cycloalkyl group, the cycloalkyl
group optionally being mono- or polysubstituted with
C.sub.1-6alkyl, halogen, hydroxy or C.sub.1-6-alkoxy; such as e.g.
cyclopropylmethyl, (1 -methylcyclopropyl)methyl, 1
-(cyclopropyl)ethyl, cyclopentylmethyl, cyclohexylmethyl and the
like.
[0088] The term "arylthio" as used herein, alone or in combination,
refers to an aryl group linked through a divalent sulfur atom
having its free valence bond from the sulfur atom, the aryl group
optionally being mono- or polysubstituted with C.sub.1-6-alkyl,
halogen, hydroxy or C.sub.1-6-alkoxy; e.g. phenylthio,
(4-methylphenyl)- thio, (2-chlorophenyl)thio and the like.
[0089] The term "arylsulfonyl" as used herein refers to an aryl
group linked through a sulfonyl group, the aryl group optionally
being mono- or polysubstituted with C.sub.1-6-alkyl, halogen,
hydroxy or C.sub.1 -6-alkoxy; such as e.g. phenylsulfonyl, tosyl
and the like.
[0090] The term "C.sub.1-6monoalkylaminocarbonyl" as used herein
refers to a monovalent substituent comprising a
C.sub.1-6-monoalkylamino group linked through a carbonyl group such
as e.g. methyl-aminocarbonyl, ethylaminocarbonyl,
n-propylaminocarbonyl, isopropylaminocarbonyl,
n-butylaminocarbonyl, sec-butylaminocarbonyl,
isobutylaminocarbonyl, tert-butylaminocarbonyl,
n-pentylaminocarbonyl, 2-methylbutylaminocarbony- l,
3-methylbutylaminocarbonyl, n-hexylaminocarbonyl,
4-methylpentylaminocarbonyl, neopentylaminocarbonyl,
n-hexylaminocarbonyl, 2-2-dimethylpropylaminocarbonyl and the
like.
[0091] The term "C.sub.1-6dialkylaminocarbonyl" as used herein
refers to a monovalent substituent comprising a
C.sub.1-6-dialkylamino group linked through a carbonyl group such
as dimethylaminocarbonyl, N-ethyl-N-methylaminocarbonyl,
diethylaminocarbonyl, dipropylaminocarbonyl,
N-(n-butyl)-N-methylaminocarbonyl, di(n-pentyl)aminocarbonyl and
the like.
[0092] As used herein, the phrase "heterocyclyl" means a monovalent
saturated or unsaturated non aromatic group being monocyclic and
containing one or more, such as from one to four carbon atom(s),
and from one to four N, O or S atom(s) or a combination thereof.
The phrase "heterocyclyl" includes, but is not limited to,
5-membered heterocycles having one hetero atom (e.g. pyrrolidine,
pyrroline and the like); 5-membered heterocycles having two
heteroatoms in 1,2 or 1,3 positions (e.g. pyrazoline, pyrazolidine,
1,2-oxathiolane, imidazolidine, imidazoline, 4-oxazolone and the
like); 5-membered heterocycles having three heteroatoms (e.g.
tetrahydrofurazan and the like); 5-membered heterocycles having
four heteroatoms; 6-membered heterocycles with one heteroatom (e.g.
piperidine and the like); 6-membered heterocycles with two
heteroatoms (e.g. piperazine, morpholine and the like); 6-membered
heterocycles with three heteroatoms; and 6-membered heterocycles
with four heteroatoms, and the like.
[0093] As used herein, the phrase "a divalent heterocyclic group"
means a divalent saturated or un-saturated system being monocyclic
and containing one or more, such as from one to four carbon
atom(s), and one to four N, O or S atom(s) or a combination
thereof. The phrase a divalent heterocyclic group includes, but is
not limited to, 5-membered heterocycles having one hetero atom
(e.g. pyrrolidine, pyrroline and the like); 5-membered heterocycles
having two heteroatoms in 1,2 or 1,3 positions (e.g. pyrazoline,
pyrazolidine, 1,2-oxathiolane, imidazolidine, imidazoline,
4-oxazolone and the like); 5-membered heterocycles having three
heteroatoms (e.g. tetrahydrofurazan and the like); 5-membered
heterocycles having four heteroatoms; 6-membered heterocycles with
one heteroatom (e.g. piperidine and the like); 6-membered
heterocycles with two heteroatoms (e.g. piperazine, morpholine and
the like); 6-membered heteroatoms, and the like.
[0094] As used herein, the phrase "a 5-6 membered cyclic ring"
means an unsaturated or saturated or aromatic system containing one
or more carbon atoms and optionally from one to four N, O or S
atom(s) or a combination thereof. The phrase "a 5-6 membered cyclic
ring" includes, but is not limited to, e.g. cyclopentyl,
cyclohexyl, phenyl, cyclohexenyl, pyrrolidinyl, pyrrolinyl,
imidazolidinyl, pyrazolidinyl, pyrazolinyl, piperidyl, piperazinyl,
pyrrolyl, 2H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, pyridyl,
pyrazinyl, pyrimidinyl, pyridazinyl, morpholinyl, thiomorpholinyl,
isothiazolyl, isoxazolyl, oxazolyl, oxadiazolyl, thiadiazolyl,
1,3-dioxolanyl, 1,4-dioxolanyl and the like, 5-membered
heterocycles having one hetero atom (e.g. thiophenes, pyrroles,
furans and the like); 5-membered heterocycles having two
heteroatoms in 1,2 or 1,3 positions (e.g. oxazoles, pyrazoles,
imidazoles, thiazoles, purines and the like); 5-membered
heterocycles having three heteroatoms (e.g. triazoles, thiadiazoles
and the like); 5-membered heterocycles having four heteroatoms;
6-membered heterocycles with one heteroatom (e.g. pyridine,
quinoline, isoquinoline, phenanthridine, cyclohepta[b]pyridine and
the like); 6-membered heterocycles with two heteroatoms (e.g.
pyridazines, cinnolines, phthalazines, pyrazines, pyrimidines,
quinazolines, morpholines and the like); 6-membered heterocycles
with three heteroatoms (e.g. 1,3,5-triazine and the like); and
6-membered heterocycles with four heteroatoms and the like.
[0095] Certain of the above defined terms may occur more than once
in the above formula (I), and upon such occurence each term shall
be defined independently of the other.
[0096] The present invention also encompasses pharmaceutically
acceptable salts of the present compounds. Such salts include
pharmaceutically acceptable acid addition salts, pharmaceutically
acceptable base addition salts, pharmaceutically acceptable metal
salts, ammonium and alkylated ammonium salts. Acid addition salts
include salts of inorganic acids as well as organic acids.
Representative examples of suitable inorganic acids include
hydrochloric, hydrobromic, hydroiodic, phosphoric, sulfuric, nitric
acids and the like. Representative examples of suitable organic
acids include formic, acetic, trichloroacetic, trifluoroacetic,
propionic, benzoic, cinnamic, citric, fumaric, glycolic, lactic,
maleic, malic, malonic, mandelic, oxalic, picric, pyruvic,
salicylic, succinic, methanesulfonic, ethanesulfonic, tartaric,
ascorbic, pamoic, bismethylene salicylic, ethanedisulfonic,
gluconic, citraconic, aspartic, stearic, palmitic, EDTA, glycolic,
p-aminobenzoic, glutamic, benzenesulfonic, p-toluenesulfonic acids,
sulphates, nitrates, phosphates, perchlorates, borates, acetates,
benzoates, hydroxynaphthoates, glycerophosphates, ketoglutarates
and the like. Further examples of pharmaceutically acceptable
inorganic or organic acid addition salts include the
pharmaceutically acceptable salts listed in J. Pharm. Sci. 1977,
66, 2, which is incorporated herein by reference. Examples of metal
salts include lithium, sodium, potassium, magnesium salts and the
like. Examples of ammonium and alkylated ammonium salts include
ammonium, methylammonium, di-methylammonium, trimethylammonium,
ethylammonium, hydroxyethylammonium, diethyl-ammonium,
butylammonium, tetramethylammonium salts and the like. Examples of
organic bases include lysine, arginine, guanidine, diethanolamine,
choline and the like.
[0097] The pharmaceutically acceptable salts are prepared by
reacting the compound of formula I with 1 to 4 equivalents of a
base such as sodium hydroxide, sodium methoxide, sodium hydride,
potassium t-butoxide, calcium hydroxide, magnesium hydroxide and
the like, in solvents like ether, THF, methanol, t-butanol,
dioxane, isopropanol, ethanol etc. Mixture of solvents may be used.
Organic bases like lysine, arginine, diethanolamine, choline,
guanidine and their derivatives etc. may also be used.
Alternatively, acid addition salts whereever applicable are
prepared by treatment with acids such as hydrochloric acid,
hydrobromic acid, nitric acid, sulfuric acid, phosphoric acid,
p-toluenesulphonic acid, methanesulfonic acid, acetic acid, citric
acid, maleic acid salicylic acid, hydroxynaphthoic acid, ascorbic
acid, palmitic acid, succinic acid, benzoic acid, benzenesulfonic
acid, tartaric acid and the like in solvents like ethyl acetate,
ether, alcohols, acetone, THF, dioxane etc. Mixture of solvents may
also be used.
[0098] The stereoisomers of the compounds forming part of this
invention may be prepared by using reactants in their single
enantiomeric form in the process wherever possible or by conducting
the reaction in the presence of reagents or catalysts in their
single enantiomer form or by resolving the mixture of stereoisomers
by conventional methods. Some of the preferred methods include use
of microbial resolution, resolving the diastereomeric salts formed
with chiral acids such as mandelic acid, camphorsulfonic acid,
tartaric acid, lactic acid, and the like wherever applicable or
chiral bases such as brucine, cinchona alkaloids and their
derivatives and the like. Commonly used methods are compiled by
Jaques et al in "Enantiomers, Racemates and Resolution" (Wiley
Interscience, 1981). More specifically the compound of formula I
may be converted to a 1:1 mixture of diastereomeric amides by
treating with chiral amines, amino acids, amino alcohols derived
from amino acids; conventional reaction conditions may be employed
to convert acid into an amide; the dia-stereomers may be separated
either by fractional crystallization or chromatography and the
stereoisomers of compound of formula I may be prepared by
hydrolysing the pure diastereomeric amide.
[0099] Various polymorphs of compound of general formula I forming
part of this invention may be prepared by crystallization of
compound of formula I under different conditions. For example,
using different solvents commonly used or their mixtures for
recrystallization; crystallizations at different temperatures;
various modes of cooling, ranging from very fast to very slow
cooling during crystallizations. Polymorphs may also be obtained by
heating or melting the compound followed by gradual or fast
cooling. The presence of polymorphs may be determined by solid
probe nmr spectroscopy, ir spectroscopy, differential scanning
calorimetry, powder X-ray diffraction or such other techniques.
[0100] The invention also encompasses prodrugs of the present
compounds, which on administration undergo chemical conversion by
metabolic processes before becoming active pharmacological
substances. In general, such prodrugs will be functional
derivatives of the present compounds, which are readily convertible
in vivo into the required compound of the formula (I). Conventional
procedures for the selection and preparation of suitable prodrug
derivatives are described, for example, in "Design of Prodrugs",
ed. H. Bundgaard, Elsevier, 1985.
[0101] The invention also encompasses active metabolites of the
present compounds.
[0102] Furthermore, the present compounds of formula I can be
utilised in the treatment and/or prevention of conditions mediated
by nuclear receptors, in particular the Peroxisome
Proliferator-Activated Receptors (PPAR).
[0103] In a further aspect, the present invention relates to a
method of treating and/or preventing Type I or Type II
diabetes.
[0104] In a still further aspect, the present invention relates to
the use of one or more compounds of the general formula I or
pharmaceutically acceptable salts thereof for the preparation of a
medicament for the treatment and/or prevention of Type I or Type II
diabetes.
[0105] In a still further aspect, the present compounds are useful
for the treatment and/or prevention of IGT.
[0106] In a still further aspect, the present compounds are useful
for the treatment and/or prevention of Type 2 diabetes.
[0107] In a still further aspect, the present compounds are useful
for the delaying or prevention of the progression from IGT to Type
2 diabetes.
[0108] In a still further aspect, the present compounds are useful
for the delaying or prevention of the progression from non-insulin
requiring Type 2 diabetes to insulin requiring Type 2 diabetes.
[0109] In another aspect, the present compounds reduce blood
glucose and triglyceride levels and are accordingly useful for the
treatment and/or prevention of ailments and disorders such as
diabetes and/or obesity.
[0110] In still another aspect, the present compounds are useful
for the treatment and/or prophylaxis of insulin resistance (Type 2
diabetes), impaired glucose tolerance, dyslipidemia, disorders
related to Syndrome X such as hypertension, obesity, insulin
resistance, hyperglycaemia, atherosclerosis, hyperlipidemia,
coronary artery disease, myocardial ischemia and other
cardiovascular disorders.
[0111] In still another aspect, the present compounds are effective
in decreasing apoptosis in mammalian cells such as beta cells of
Islets of Langerhans.
[0112] In still another aspect, the present compounds are useful
for the treatment of certain renal diseases including
glomerulonephritis, glomerulosclerosis, nephrotic syndrome,
hypertensive nephrosclerosis.
[0113] In still another aspect, the present compounds may also be
useful for improving cognitive functions in dementia, treating
diabetic complications, psoriasis, polycystic ovarian syndrome
(PCOS) and prevention and treatment of bone loss, e.g.
osteoporosis.
[0114] The invention also relates to pharmaceutical compositions
comprising, as an active ingredient, at least one compound of the
formula I or any optical or geometric isomer or tautomeric form
thereof including mixtures of these or a pharmaceutically
acceptable salt thereof together with one or more pharmaceutically
acceptable carriers or diluents.
[0115] Furthermore, the invention relates to the use of compounds
of the general formula I or their tautomeric forms, their
stereoisomers, their polymorphs, their pharmaceutically acceptable
salts or pharmaceutically acceptable solvates thereof for the
preparation of a pharmaceutical composition for the treatment
and/or prevention of conditions mediated by nuclear receptors, in
particular the Peroxisome Proliferator-Activated Receptors (PPAR)
such as the conditions mentioned above.
[0116] The present invention also relates to a process for the
preparation of the above said novel compounds, their derivatives,
their analogs, their tautomeric forms, their stereoisomers, their
polymorphs, their pharmaceutically acceptable salts or
pharmaceutically acceptable solvates.
[0117] A compound of formula I can be prepared as described
below:
[0118] a) Reacting a compound of formula II, wherein A, B, T, X, Y,
and p are as defined previously, except that T is not N, 3
[0119] through a Wittig process with
(PH.sub.3P).sub.3P(CH.sub.2).sub.n+1O- H.Br in the presence of a
suitable base as butyllithium, to give compounds of formula III.
4
[0120] wherein A, B, X, Y, T, p and n are defined as previously,
except that T is not N. Compounds of formula III may then be
reacted under Mitsunobu conditions with compounds of formula IV
5
[0121] wherein m, R.sup.1, R.sup.2, R.sup.3 are defined as
previously and wherein R.sup.4 and R.sup.5 are defined as
previously except H, to give compounds of formula l, wherein A, B,
X, Y, T, Ar, Z, Q, p, n, R.sup.1, R.sup.2, R.sup.3 are defined as
previously, except that T is not N, and wherein R.sup.4 and R.sup.5
are defined as previously except H, and wherein m and k is 1 and
within the term T.dbd..dbd.(Y).sub.p, .dbd..dbd. is defined as a
single bond and within the term T.dbd..dbd.(CH.sub.k), .dbd..dbd.
is defined as a double bond.
[0122] b) Alternatively a compound of formula V 6
[0123] wherein A, B, X, Y, T, p, n, k and the terms
T.dbd..dbd.(Y).sub.p and T.dbd..dbd.(CH.sub.k) are defined as
previously and wherein LG is a suitable leaving group, may be
reacted, possible under transition metal catalysis, with a
nucleophilic compound of formula VI 7
[0124] wherein Ar, R.sup.1, R.sup.2, R.sup.3 are defined as
previously and wherein R.sup.4 and R.sup.5 are defined as
previously except H and wherein "Met" is a metal such as zinc or
copper, carrying suitable ligands preferentially from
trifluoro-methanesulfonate or halide to give compounds of formula
I, wherein A, B, X, Y, T, Ar, Z, Q, p, n, R.sup.1, R.sup.2,
R.sup.3, and the terms T.dbd..dbd.(Y).sub.p and
T.dbd..dbd.(CH.sub.k) are defined as previously and wherein R.sup.4
and R.sup.5 are defined as previously except H, and wherein m is
0.
[0125] c) Alternatively compounds of formula V wherein A, B, X, Y,
T, p, n, and the terms T.dbd..dbd.(Y).sub.p and
T.dbd..dbd.(CH.sub.k) are defined as previously and wherein LG is a
suitable leaving group (for example halogen, sulfonates, phosphor,
hydroxy under Mitsunobu conditions) are reacted with L a compound
of VII 8
[0126] wherein Ar, Z, Q, R.sup.1, R.sup.2, R.sup.3 are defined as
previously and wherein R.sup.4 and R.sup.5 are defined as
previously except H, to give compounds of formula I, wherein A, B,
X, Y, T, Ar, Z, Q. p, n, R.sup.1, R.sup.2, R.sup.3, and the terms
T.dbd..dbd.(Y).sub.p and T.dbd..dbd.(CH.sub.k) are defined as
previously and wherein R.sup.4 and R.sup.5 are defined as
previously except H, and wherein m is 1.
[0127] d) Alternatively a compound of formula VIII 9
[0128] wherein A, B, X, Y and p are defined as previously, may be
alkylated with a suitable electrophilic reagent such as ethylene
oxide, ethyl bromoacetate followed by reduction of the ester to an
alcohol, 2-bromoethanol or 2-bromoethanol to give a compound of
formula X 10
[0129] wherein A, B, X, Y, p and n are defined as previously. The
hydroxy group can if needed be converted to a suitable leaving
group and reacted with a compound of formula VII, wherein Ar, Z, Q,
R.sup.1, R.sup.2, R.sup.3 are defined as previously and wherein
R.sup.4 and R.sup.5 are defined as previously except H, to give
compounds of formula I, wherein A, B, X, Y, Ar, Z, Q, p, n,
R.sup.1, R.sup.2 and R.sup.3 are defined as previously and within
the terms T.dbd..dbd.(Y).sub.p and T.dbd..dbd.(CH.sub.k),
.dbd..dbd.is defined as a singlebond and wherein R.sup.4 and
R.sup.5 are defined as previously except H, and wherein m is 1 and
k is 0 and wherein T is N.
[0130] e) Alternatively reacting compounds of formula X wherein A,
B, X, Y, p and n are defined as previously, with a compound of
formula XI 11
[0131] wherein Ar is defined as previously followed by reaction
with a suitable Wittig reagent to give a compound of formula XII
12
[0132] wherein A, B, X, Y, Ar, Z, Q, p, n, R.sup.1, R.sup.2,
R.sup.3, and the terms T.dbd..dbd.(Y).sub.p and
T.dbd..dbd.(CH.sub.k) are defined as previously and wherein R.sup.4
and R.sup.5 are defined as previously except H. Addition to the
double bond of suitable reagents give compounds of formula I,
wherein A, B, X, Y, Ar, Z, Q, p, n, R.sup.1, R.sup.2 and R.sup.3
are defined as previously and within the terms T.dbd..dbd.(Y).sub.p
and T.dbd..dbd.(CH.sub.k), .dbd..dbd.is defined as a single bond
and wherein R.sup.4 and R.sup.5 are defined as previously except H,
and wherein m is 1 and k is 0 and wherein T is N.
[0133] f) Alternatively compounds of formula I wherein A, B, X, Y,
T, Ar, p, n, k, R.sup.1, R.sup.2, R.sup.3, and the terms
T.dbd..dbd.(Y).sub.p and T.dbd..dbd.(CH.sub.k) are defined as
previously and wherein Z and Q is O and wherein R.sup.4 and R.sup.5
are defined as previously except H can either be hydrolysed to the
corresponding acid or be reacted further to give a compound of
formula I wherein A, B, X, Y, T, Ar, Z, Q, p, n, R.sup.1, R.sup.2,
R.sup.3, R.sup.4, R.sup.5 and the terms T.dbd..dbd.(Y).sub.p and
T.dbd..dbd.(CH.sub.k) are defined as previously.
PHARMACOLOGICAL METHODS
[0134] In vitro PPAR alpha and PPAR gamma activation activity.
[0135] Principle
[0136] The PPAR gene transcription activation assays were based on
transient transfection into human HEK293 cells of two plasmids
encoding a chimeric test protein and a reporter protein
respectively. The chimeric test protein was a fusion of the DNA
binding domain (DBD) from the yeast GAL4 transcription factor to
the ligand binding domain (LBD) of the human PPAR proteins. The
PPAR LBD harbored in addition to the ligand binding pocket also the
native activation domain (activating function 2 =AF2) allowing the
fusion protein to function as a PPAR ligand dependent transcription
factor. The GAL4 DBD will force the fusion protein to bind only to
Gal4 enhancers (of which none existed in HEK293 cells). The
reporter plasmid contained a Gal4 enhancer driving the expression
of the firefly luciferase protein. After transfection, HEK293 cells
expressed the GAL4-DBD-PPAR-LBD fusion protein. The fusion protein
will in turn bind to the Gal4 enhancer controlling the luciferase
expression, and do nothing in the absence of ligand. Upon addition
to the cells of a PPAR ligand, luciferase protein will be produced
in amounts corresponding to the activation of the PPAR protein. The
amount of luciferase protein is measured by light emission after
addition of the appropriate substrate.
[0137] Methods
[0138] Cell culture and transfection: HEK293 cells were grown in
DMEM +10% FCS, 1% PS. Cells were seeded in 96-well plates the day
before transfection to give a confluency of 80% at transfection.
0,8 .mu.g DNA per well was transfected using FuGene transfection
reagent according to the manufacturers instructions
(Boehringer-Mannheim). Cells were allowed to express protein for 48
h followed by addition of compound.
[0139] Plasmids: Human PPAR .alpha. and .gamma. was obtained by PCR
amplification using cDNA templates from liver, intestine and
adipose tissue respectively. Amplified cDNAs were cloned into
pCR2.1 and sequenced. The LBD from each isoform PPAR was generated
by PCR (PPAR.alpha.: aa 167 - C-term; PPAR.gamma.: aa 165 - C-term)
and fused to GAL4-DBD by subcloning fragments in frame into the
vector pM1 generating the plasmids pM1.alpha.LBD and pM1.gamma.LBD.
Ensuing fusions were verified by sequencing. The reporter was
constructed by inserting an oligonucleotide encoding five repeats
of the Gal4 recognition sequence into the pGL2 vector
(Promega).
[0140] Compounds: All compounds were dissolved in DMSO and diluted
1:1000 upon addition to the cells. Cells were treated with compound
(1:1000 in 200 .mu.l growth medium including delipidated serum) for
24 h followed by luciferase assay.
[0141] Luciferase assay: Medium including test compound was
aspirated and 100 .mu.l PBS incl. 1mM Mg++and Ca++was added to each
well. The luciferase assay was performed using the LucLite kit
according to the manufacturers instructions (Packard Instruments).
Light emission was quantified by counting SPC mode on a Packard
Instruments top-counter.
PHARMACEUTICAL COMPOSITIONS
[0142] In another aspect, the present invention includes within its
scope pharmaceutical compositions comprising, as an active
ingredient, at least one of the compounds of the general formula I
or a pharmaceutically acceptable salt thereof together with a
pharmaceutically acceptable carrier or diluent.
[0143] The present compounds may also be administered in
combination with one or more further pharmacologically active
substances eg. selected from antiobesity agents, antidiabetics,
antihypertensive agents, agents for the treatment and/or prevention
of complications resulting from or associated with diabetes and
agents for the treatment and/or prevention of complications and
disorders resulting from or associated with obesity.
[0144] Thus, in a further aspect of the invention the present
compounds may be administered in combination with one or more
antiobesity agents or appetite regulating agents.
[0145] Such agents may be selected from the group consisting of
CART (cocaine amphetamine regulated transcript) agonists, NPY
(neuropeptide Y) antagonists, MC4 (melanocortin 4) agonists, orexin
antagonists, TNF (tumor necrosis factor) agonists, CRF
(corticotropin releasing factor) agonists, CRF BP (corticotropin
releasing factor binding protein) antagonists, urocortin agonists,
.beta.03 agonists, MSH (melanocyte-stimulating hormone) agonists,
MCH (melanocyte-concentrating hormone) antagonists, CCK
(cholecystokinin) agonists, serotonin re-uptake inhibitors,
serotonin and noradrenaline re-uptake inhibitors, mixed serotonin
and noradrenergic compounds, 5HT (serotonin) agonists, bombesin
agonists, galanin antagonists, growth hormone, growth hormone
releasing compounds, TRH (thyreotropin releasing hormone) agonists,
UCP 2 or 3 (uncoupling protein 2 or 3) modulators, leptin agonists,
DA agonists (bromocriptin, doprexin), lipase/amylase inhibitors,
RXR (retinoid X receptor) modulators or TR .beta. agonists.
[0146] In one embodiment of the invention the antiobesity agent is
leptin.
[0147] In another embodiment the antiobesity agent is
dexamphetamine or amphetamine.
[0148] In another embodiment the antiobesity agent is fenfluramine
or dexfenfluramine.
[0149] In still another embodiment the antiobesity agent is
sibutramine.
[0150] In a further embodiment the antiobesity agent is
orlistat.
[0151] In another embodiment the antiobesity agent is mazindol or
phentermine.
[0152] Suitable antidiabetics comprise insulin, GLP-1 (glucagon
like peptide-1) derivatives such as those disclosed in WO 98/08871
to Novo Nordisk A/S, which is incorporated herein by reference as
well as orally active hypoglycaemic agents.
[0153] The orally active hypoglycaemic agents preferably comprise
sulphonylureas, biguanides, meglitinides, glucosidase inhibitors,
glucagon antagonists such as those disclosed in WO 99/01423 to Novo
Nordisk A/S and Agouron Pharmaceuticals, Inc., GLP-1 agonists,
potassium channel openers such as those disclosed in WO 97/26265
and WO 99/03861 to Novo Nordisk A/S which are incorporated herein
by reference, DPP-IV (dipeptidyl peptidase-IV) inhibitors,
inhibitors of hepatic enzymes involved in stimulation of
gluconeogenesis and/or glycogenolysis, glucose uptake modulators,
compounds modifying the lipid metabolism such as antihyperlipidemic
agents and antilipidemic agents as HMG CoA inhibitors (statins),
compounds lowering food intake, RXR agonists and agents acting on
the ATP-dependent potassium channel of the ,.beta.-cells.
[0154] In one embodiment of the invention the present compounds are
administered in combination with insulin.
[0155] In a further embodiment the present compounds are
administered in combination with a sulphonylurea eg. tolbutamide,
glibenclamide, glipizide or glicazide.
[0156] In another embodiment the present compounds are administered
in combination with a biguanide eg. metformin.
[0157] In yet another embodiment the present compounds are
administered in combination with a meglitinide eg. repaglinide.
[0158] In a further embodiment the present compounds are
administered in combination with an .alpha.-glucosidase inhibitor
eg. miglitol or acarbose.
[0159] In another embodiment the present compounds are administered
in combination with an agent acting on the ATP-dependent potassium
channel of the .beta.-cells eg. tolbutamide, glibenclamide,
glipizide, glicazide or repaglinide.
[0160] Furthermore, the present compounds may be administered in
combination with nateglinide.
[0161] In still another embodiment the present compounds are
administered in combination with an antihyperlipidemic agent or
antilipidemic agent eg. cholestyramine, colestipol, clofibrate,
gemfibrozil, lovastatin, pravastatin, simvastatin, probucol or
dextrothyroxine.
[0162] In a further embodiment the present compounds are
administered in combination with more than one of the
above-mentioned compounds eg. in combination with a sulphonylurea
and metformin, a sulphonylurea and acarbose, repaglinide and
metformin, insulin and a sulphonylurea, insulin and metformin,
insulin, insulin and lovastatin, etc.
[0163] Furthermore, the present compounds may be administered in
combination with one or more antihypertensive agents. Examples of
antihypertensive agents are .beta.-blockers such as alprenolol,
atenolol, timolol, pindolol, propranolol and metoprolol, ACE
(angiotensin converting enzyme) inhibitors such as benazepril,
captopril, enalApril, fosinopril, lisinopril, quinApril and
ramipril, calcium channel blockers such as nifedipine, felodipine,
nicardipine, isradipine, nimodipine, diltiazem and verapamil, and
.alpha.-blockers such as doxazosin, urapidil, prazosin and
terazosin. Further reference can be made to Remington: The Science
and Practice of Pharmacy, 19.sup.th Edition, Gennaro, Ed., Mack
Publishing Co., Easton, Pa, 1995.
[0164] It should be understood that any suitable combination of the
compounds according to the invention with one or more of the
above-mentioned compounds and optionally one or more further
pharmacologically active substances are considered to be within the
scope of the present invention.
[0165] Pharmaceutical compositions containing a compound of the
present invention may be prepared by conventional techniques, e.g.
as described in Remington: The Science and Practise of Pharmacy,
19.sup.th Ed., 1995. The compositions may appear in conventional
forms, for example capsules, tablets, aerosols, solutions,
suspensions or topical applications.
[0166] Typical compositions include a compound of formula I or a
pharmaceutically acceptable acid addition salt thereof, associated
with a pharmaceutically acceptable excipient which may be a carrier
or a diluent or be diluted by a carrier, or enclosed within a
carrier which can be in the form of a capsule, sachet, paper or
other container. In making the compositions, conventional
techniques for the preparation of pharmaceutical compositions may
be used. For example, the active compound will usually be mixed
with a carrier, or diluted by a carrier, or enclosed within a
carrier which may be in the form of a ampoule, capsule, sachet,
paper, or other container. When the carrier serves as a diluent, it
may be solid, semi-solid, or liquid material which acts as a
vehicle, excipient, or medium for the active compound. The active
compound can be adsorbed on a granular solid container for example
in a sachet. Some examples of suitable carriers are water, salt
solutions, alcohols, polyethylene glycols, polyhydroxyethoxylated
castor oil, peanut oil, olive oil, gelatine, lactose, terra alba,
sucrose, cyclodextrin, amylose, magnesium stearate, talc, gelatin,
agar, pectin, acacia, stearic acid or lower alkyl ethers of
cellulose, silicic acid, fatty acids, fatty acid amines, fatty acid
monoglycerides and diglycerides, pentaerythritol fatty acid esters,
polyoxyethylene, hydroxymethylcellulose and polyvinylpyrrolidone.
Similarly, the carrier or diluent may include any sustained release
material known in the art, such as glyceryl monostearate or
glyceryl distearate, alone or mixed with a wax. The formulations
may also include wetting agents, emulsifying and suspending agents,
preserving agents, sweetening agents or flavouring agents. The
formulations of the invention may be formulated so as to provide
quick, sustained, or delayed release of the active ingredient after
administration to the patient by employing procedures well known in
the art.
[0167] The pharmaceutical compositions can be sterilized and mixed,
if desired, with auxiliary agents, emulsifiers, salt for
influencing osmotic pressure, buffers and/or colouring substances
and the like, which do not deleteriously react with the active
compounds.
[0168] The route of administration may be any route, which
effectively transports the active compound to the appropriate or
desired site of action, such as oral, nasal, pulmonary, transdermal
or parenteral e.g. rectal, depot, subcutaneous, intravenous,
intraurethral, intramuscular, intranasal, ophthalmic solution or an
ointment, the oral route being preferred.
[0169] If a solid carrier is used for oral administration, the
preparation may be tabletted, placed in a hard gelatin capsule in
powder or pellet form or it can be in the form of a troche or
lozenge. If a liquid carrier is used, the preparation may be in the
form of a syrup, emulsion, soft gelatin capsule or sterile
injectable liquid such as an aqueous or non-aqueous liquid
suspension or solution.
[0170] For nasal administration, the preparation may contain a
compound of formula I dissolved or suspended in a liquid carrier,
in particular an aqueous carrier, for aerosol application. The
carrier may contain additives such as solubilizing agents, e.g.
propylene glycol, surfactants, absorption enhancers such as
lecithin (phosphatidylcholine) or cyclodextrin, or preservatives
such as parabenes.
[0171] For parenteral application, particularly suitable are
injectable solutions or suspensions, preferably aqueous solutions
with the active compound dissolved in polyhydroxylated castor
oil.
[0172] Tablets, dragees, or capsules having talc and/or a
carbohydrate carrier or binder or the like are particularly
suitable for oral application. Preferable carriers for tablets,
dragees, or capsules include lactose, corn starch, and/or potato
starch. A syrup or elixir can be used in cases where a sweetened
vehicle can be employed.
[0173] A typical tablet which may be prepared by conventional
tabletting techniques may contain:
1 Core: Active compound (as free compound or salt thereof) 5 mg
Colloidal silicon dioxide (Aerosil) 1.5 mg Cellulose, microcryst.
(Avicel) 70 mg Modified cellulose gum (Ac-Di-Sol) 7.5 mg Magnesium
stearate Ad. Coating: HPMC approx. 9 mg *Mywacett 9-40 T approx.
0.9 mg *Acylated monoglyceride used as plasticizer for film
coating.
[0174] The compounds of the invention may be administered to a
mammal, especially a human in need of such treatment, prevention,
elimination, alleviation or amelioration of diseases related to the
regulation of blood sugar.
[0175] Such mammals include also animals, both domestic animals,
e.g. household pets, and non-domestic animals such as wildlife.
[0176] The compounds of the invention are effective over a wide
dosage range. For example, in the treatment of adult humans,
dosages from about 0.05 to about 100 mg, preferably from about 0.1
to about 100 mg, per day may be used. A most preferable dosage is
about 0.1 mg to about 70 mg per day. In choosing a regimen for
patients it may frequently be necessary to begin with a dosage of
from about 2 to about 70 mg per day and when the condition is under
control to reduce the dosage as low as from about 0.1 to about 10
mg per day. The exact dosage will depend upon the mode of
administration, on the therapy desired, form in which administered,
the subject to be treated and the body weight of the subject to be
treated, and the preference and experience of the physician or
veterinarian in charge.
[0177] Generally, the compounds of the present invention are
dispensed in unit dosage form comprising from about 0.1 to about
100 mg of active ingredient together with a pharmaceutically
acceptable carrier per unit dosage.
[0178] Usually, dosage forms suitable for oral, nasal, pulmonary or
transdermal administration comprise from about 0.001 mg to about
100 mg, preferably from about 0.01 mg to about 50 mg of the
compounds of formula I admixed with a pharmaceutically acceptable
carrier or diluent.
[0179] Any novel feature or combination of features described
herein is considered essential to this invention.
EXAMPLES
[0180] The process for preparing compounds of formula I and
preparations containing them is further illustrated in the
following examples, which however, are not to be construed as
limiting.
[0181] The structures of the compounds are confirmed by either
elemental analysis (MA) nuclear magnetic resonance (NMR) or mass
spectrometry (MS). NMR shifts (d) are given in parts per million
(ppm) and only selected peaks are given. mp is melting point and is
given in .degree.C. Column chromatography was carried out using the
technique described by W. C. Still et al, J. Org. Chem. 1978, 43,
2923-2925 on Merck silica gel 60 (Art 9385). Compounds used as
starting materials are either known compounds or compounds which
can readily be prepared by methods known per se.
2 Abbrevations: TLC: thin layer chromatography DMSO:
dimethylsulfoxide CDCl.sub.3: deutorated chloroform DMF:
N,N-dimethylformamide min: minutes h: hours
EXAMPLE 1
[0182] 13
[0183] 2-[2-Phenoxazine-10-yl-ethoxy)-benzyl]-malonic acid dimethyl
ester
[0184] a)
[0185] A solution of benzyloxybenzaldehyde (10.6 g, 50.0 mmol) and
dimethyl malonate (6.6 g, 50.0 mmol) in benzene (100 mL) containing
a catalytic quantity of pipiridinium acetate was refluxed in a
Dean-Stark trap for 16 h. After cooling to room temperature, the
solution was concentrated. The residue was crystallised from ethyl
acetate/heptane to give 14.5 g (90%) of
2-(4-benzyloxy-benzylidene)-malonic acid dimethyl ester: mp
134-135.degree. C. .sup.1H NMR (300 MHz, CDCI.sub.3): .delta. 3.82
(s, 3H), 3.86 (s, 3H), 5.08 (s, 2H), 6.95 (d, 2H), 7.30-7.45 (m,
7H), 7.70 (s, 1H).
[0186] b)
[0187] A solution of 2-(4-benzyloxy-benzylidene)-malonic acid
dimethyl ester (14,5 g, 44.5 mmol) in methanol (300 mL) was
hydrogenated at 3 atm. in the presence of 5% palladium on charcoal
(1.1 g). The solution was filtered, and the filtrate evaporated
under a vacuum to give 9.2 g (77%) of 2-(4-hydroxy-benzyl)-malonic
acid dimethyl ester: .sup.1H NMR (300 MHz, CDCI.sub.3): .delta.
3.15 (d, 2H), 3.65 (t, 1H), 3.70 (s, 6H), 6.70 (d, 2H), 7.05 (d,
2H).
[0188] c)
[0189] Under a nitrogen atmosphere, 2-phenoxazin-10-yl-ethanol (340
mg, 1.5 mmol), tributylphosphine (455 mg, 2.25 mmol) and
2-(4-hydroxy-benzyl)-malonic acid dimethyl ester (357 mg, 1.5 mmol)
were successively dissolved in dry benzene (20 mL). Solid
azodicarboxylic dipiperidide (ADDP) (567 mg, 2.25 mmol) was added
under stirring at 0.degree. C. to the solution. After 10 min, the
reaction mixture was brought to room temperature and the stirring
was continued for 2h. Heptane (10 mL) was added to the reaction
mixture and dihydro-ADDP separated out was filtered off. After
evaporation of the solvent the product was purified by flash
chromatography gradiating from toluen to toluen/ethyl acetate
(19:1). The title compound was isolated as a crystalline product
(325 mg, 48%): mp 100-101.degree. C.; .sup.1H NMR (300 MHz,
CDCI.sub.3): .delta. 3.15 (d, 2H), 3.62 (t, 1H), 3.68 (s, 6H), 3.95
(t, 2H), 4.15 (t, 2H), 6.58-6.70 (m, 6H), 6.75-6.84 (m, 4H), 7.10
(d, 2H)
EXAMPLE 2
[0190] 14
[0191] 2-[4-(2-Phenoxazine-I 0-yl-ethoxy)-benzyl]-malonic acid,
disodiumsalt
[0192] A 1 N aqueous solution of sodium hydroxide (3 mL) was added
to a solution of 2-{4-(2-phenoxazine-10-yl-ethoxy)-benzyl]-malonic
acid dimethyl ester (150 mg, 0.3 mmol) in a mixture of methanol (3
mL) and tetrahydrofuran (3 mL).The mixture was stirred for 64 h at
room temperature. The title compound (95 mg, 72%) was isolated by
filtration and washed with a mixture of MeOH/THF: mp
303-307.degree.C.; .sup.1H NMR (300 MHz, D.sub.2O): .delta. 2.96
(d, 2H), 3.35 (t, 1H), 3.75-3.95 (bs, 2H), 4.18 (m, 2H), 6.55-6.90
(m, 10H), 7.15 (d, 2H).
* * * * *