U.S. patent number RE46,170 [Application Number 14/315,955] was granted by the patent office on 2016-10-04 for insulin derivatives.
This patent grant is currently assigned to Novo Nordisk A/S. The grantee listed for this patent is Novo Nordisk A/S. Invention is credited to Patrick William Garibay, Thomas Hoeg-Jensen, Ib Jonassen, Janos Tibor Kodra, Peter Madsen, Tina Moeller Tagmose.
United States Patent |
RE46,170 |
Kodra , et al. |
October 4, 2016 |
Insulin derivatives
Abstract
The present invention relates to insulin derivatives having a
side chain attached either to the .alpha.-amino group of the
N-terminal amino acid residue of the B chain or to the
.epsilon.-amino group of a Lys residue present in the B chain of
the parent insulin via an amide bond which side chain comprises at
least one aromatic group; at least one free carboxylic acid group
or a group which is negatively charged at neutral pH, a fatty acid
moiety with 4 to 22 carbon atoms in the carbon chain; and possible
linkers which link the individual components in the side chain
together via amide bonds.
Inventors: |
Kodra; Janos Tibor (Koebenhavn
Oe, DK), Garibay; Patrick William (Holte,
DK), Hoeg-Jensen; Thomas (Klampenborg, DK),
Jonassen; Ib (Valby, DK), Madsen; Peter
(Bagsvaerd, DK), Tagmose; Tina Moeller (Ballerup,
DK) |
Applicant: |
Name |
City |
State |
Country |
Type |
Novo Nordisk A/S |
Bagsvaerd |
N/A |
DK |
|
|
Assignee: |
Novo Nordisk A/S (Bagsvaerd,
DK)
|
Family
ID: |
1000001686077 |
Appl.
No.: |
14/315,955 |
Filed: |
June 26, 2014 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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11814019 |
Nov 29, 2011 |
8067362 |
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PCT/EP2006/050593 |
Feb 1, 2006 |
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60651035 |
Feb 8, 2005 |
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Reissue of: |
13273659 |
Oct 14, 2011 |
8476228 |
Jul 2, 2013 |
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Foreign Application Priority Data
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Feb 2, 2005 [DK] |
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PA 2005 00157 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
C07K
14/62 (20130101); A61K 38/28 (20130101); A61P
3/10 (20180101); A61K 38/28 (20130101); C07K
14/62 (20130101) |
Current International
Class: |
A61K
38/28 (20060101); C07K 14/62 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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894095 |
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Feb 1999 |
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EP |
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0894095 |
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May 2003 |
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EP |
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894095 |
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Apr 1962 |
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GB |
|
894095 |
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Apr 1962 |
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GB |
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1492997 |
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Nov 1977 |
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GB |
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1254699 |
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May 1979 |
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JP |
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57-67548 |
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Apr 1982 |
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JP |
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57-67548 |
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Oct 1982 |
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JP |
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1-254699 |
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Sep 1999 |
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JP |
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91/12817 |
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Sep 1991 |
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WO |
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95/07931 |
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Mar 1995 |
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WO |
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WO 95/07931 |
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Mar 1995 |
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WO |
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96/29344 |
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Sep 1996 |
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WO |
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97/31022 |
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Aug 1997 |
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WO |
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WO 97/31022 |
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Aug 1997 |
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WO |
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98/02460 |
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Jan 1998 |
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WO |
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WO 98/02460 |
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Jan 1998 |
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WO |
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02/094200 |
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Nov 2002 |
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WO |
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03/013573 |
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Feb 2003 |
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WO |
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2005/005477 |
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Jan 2005 |
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WO |
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WO 2005/005477 |
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Jan 2005 |
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WO |
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2005/012347 |
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Feb 2005 |
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WO |
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WO 2005/012347 |
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Feb 2005 |
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WO |
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2005/047508 |
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May 2005 |
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WO |
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2006/008238 |
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Jan 2006 |
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WO |
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2006/082204 |
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Aug 2006 |
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WO |
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2006/082205 |
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Aug 2006 |
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WO |
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2007/074133 |
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Jul 2007 |
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WO |
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2007/096431 |
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Aug 2007 |
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WO |
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2007/128815 |
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Nov 2007 |
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WO |
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2007/128817 |
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Nov 2007 |
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WO |
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WO 2007/128817 |
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Nov 2007 |
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WO |
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2008/152106 |
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Dec 2008 |
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WO |
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2009/060071 |
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May 2009 |
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WO |
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2010/049488 |
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May 2010 |
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WO |
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2011/141407 |
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Nov 2011 |
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WO |
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Other References
Havelund, S et al., Pharmaceutical Research, The Mechanism of
Protraction of Insulin Determir, a Long-Acting, Acylated Analog of
Human Insulin, 2004, vol. 21, Part 8, pp. 1498-1505. cited by
applicant .
Hinds, K et al. Bioconjugate Chemistry. "Synthesis and
Characterization of Poly(ethylene Glycol)-Insulin Conjugates."
2000. vol. 11. pp. 195-201. cited by applicant .
Kochendoerfer, GG et al. Science. "Design and Chemical Synthesis of
Homogeneous Polymer-Modified Erthropoiesis Protein." 2003. vol.
299(5608). pp. 884-887. cited by applicant .
Tager H et al. Proceedings of the National Academy of Sciences of
the USA. "Semisynthesis and Biological Activity of Porcine[LEUB24]
Insulin and [LEUB25]Insulin." 1980. vol. 77(6). pp. 3182-3185.
cited by applicant .
English abstract of JP 1-254699; Sep. 21, 1999; Sagou Akira. cited
by applicant .
English abstract of JP 57-67548; Oct. 15, 1982; Harada Toshio.
cited by applicant .
Uchio, T. et al., Advanced Drug Delivery Reviews, vol. 35, p.
289-306 (1999). cited by applicant .
Havelund, D.S. et al., Pharmaceutical Research, 2004, vol. 21, No.
8, pp. 1498-1504. cited by applicant.
|
Primary Examiner: Campell; Bruce
Attorney, Agent or Firm: Wilk-Orescan; Rosemarie R.
Parent Case Text
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation of U.S. application Ser. No.
11/814,019, filed Jul. 16, 2007, which is U.S.C. .sctn.371 National
Stage application of International Application PCT/EP2006/050593,
filed Feb. 1, 2006 (published as WO2006/082204), which claimed
priority of Danish Patent Application PA 2005 00157, filed on Feb.
2, 2005; this application claims priority under 35 U.S.C. .sctn.119
of U.S. Provisional Application 60/651,035, filed Feb. 8, 2005; the
contents of which are fully incorporated herein by reference.
Claims
The invention claimed is:
1. An insulin derivative having the formula ##STR00078## wherein
Ins is the parent insulin moiety which via the .alpha.-amino group
of the N-terminal amino acid residue of the B chain or an
.epsilon.-amino group of a Lys residue present in the B chain of
the insulin moiety is bound to the CO-- group in the side chain via
an amide bond; X.sub.1 is a bond; W is an arylene; m is .Iadd.0 or
.Iaddend.1; X is a bond; Y is --(CR.sub.1R.sub.2).sub.q--NR--CO--,
where R.sub.1 is H, R.sub.2 is H, q is 1; and R
--(CH.sub.2).sub.p--COOH where p is .Iadd.1 or .Iaddend.2; Q is
--(CH.sub.2).sub.r-- where r is .Iadd.13, .Iaddend.14.Iadd., 15 or
16.Iaddend.; and Z is --COOH; and any Zn.sup.2+ complex
thereof.
2. An insulin derivative according to claim 1, wherein W is
phenylene.
3. An insulin derivative according to claim 1, wherein the parent
insulin moiety is a des(B30) human insulin or an analogue
thereof.
4. An insulin derivative according to claim 1, wherein the parent
insulin moiety is selected from the group consisting of human
insulin; des(B1) human insulin; desB30 human insulin; GlyA21 human
insulin; GlyA21 des(B30)human insulin; AspB28 human insulin;
porcine insulin; LysB28ProB29 human insulin; GlyA21ArgB31ArgB32
human insulin; and LysB3GluB29 human insulin.
5. An insulin derivative according to claim 1 selected from the
group consisting of
.[.N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxymethyl)-C-
H.sub.2--C.sub.6H.sub.4CO] des(B30) human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.13CO)--N-(carboxymethyl)-CH.s-
ub.2--C.sub.6H.sub.4CO] des(B30) human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.15CO)--N-(carboxymethyl)-CH.s-
ub.2--C.sub.6H.sub.4CO] des(B30) human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.16CO)--N-(carboxymethyl)-CH.s-
ub.2--C.sub.6H.sub.4CO] des(B30) human insulin;.].
.Iadd.N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-
-CH.sub.2--C.sub.6H.sub.4CO] des(B30) human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.13CO)--N-(carboxyethyl)-CH.su-
b.2--C.sub.6H.sub.4CO] des(B30) human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.15CO)--N-(carboxyethyl)-CH.su-
b.2--C.sub.6H.sub.4CO] des(B30) human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.16CO)--N-(carboxyethyl)-CH.su-
b.2--C.sub.6H.sub.4CO] des(B30) human insulin; .Iaddend.and
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxymethyl)-CH.s-
ub.2--C.sub.6H.sub.4CO] des(B30) human insulin.
6. A pharmaceutical composition for the treatment of diabetes in a
patient in need of such treatment, comprising a therapeutically
effective amount of an insulin derivative according to claim 1
together with a pharmaceutically acceptable carrier.
7. A pharmaceutical composition for the treatment of diabetes in a
patient in need of such treatment, comprising a therapeutically
effective amount of an insulin derivative according to claim 1 in
mixture with an insulin or an insulin analogue which has a rapid
onset of action, together with a pharmaceutically acceptable
carrier.
8. A method of treating diabetes in a patient in need of such a
treatment, comprising administering to the patient a
therapeutically effective amount of an insulin derivative according
to claim 1 together with a pharmaceutically acceptable carrier.
9. A method of treating diabetes in a patient in need of such a
treatment, comprising administering to the patient a
therapeutically effective amount of an insulin derivative according
to claim 1 in mixture with an insulin or an insulin analogue which
has a rapid onset of action, together with a pharmaceutically
acceptable carrier.
Description
FIELD OF THE INVENTION
The present invention relates to novel human insulin derivatives
which are soluble at physiological pH values and have a prolonged
profile of action. The invention also relates to methods of
providing such derivatives, to pharmaceutical compositions
containing them, to a method of treating diabetes and
hyperglycaemia using the insulin derivatives of the invention and
to the use of such insulin derivatives in the treatment of diabetes
and hyperglycaemia.
BACKGROUND OF THE INVENTION
Currently, the treatment of diabetes, both type 1 diabetes and type
2 diabetes, relies to an increasing extent on the so-called
intensive insulin treatment. According to this regimen, the
patients are treated with multiple daily insulin injections
comprising one or two daily injections of long acting insulin to
cover the basal insulin requirement supplemented by bolus
injections of a rapid acting insulin to cover the insulin
requirement related to meals.
Long acting insulin compositions are well known in the art. Thus,
one main type of long acting insulin compositions comprises
injectable aqueous suspensions of insulin crystals or amorphous
insulin. In these compositions, the insulin compounds utilized
typically are protamine insulin, zinc insulin or protamine zinc
insulin.
Certain drawbacks are associated with the use of insulin
suspensions. Thus, in order to secure an accurate dosing, the
insulin particles must be suspended homogeneously by gentle shaking
before a defined volume of the suspension is withdrawn from a vial
or expelled from a cartridge. Also, for the storage of insulin
suspensions, the temperature must be kept within more narrow limits
than for insulin solutions in order to avoid lump formation or
coagulation.
Another type of long acting insulin compositions are solutions
having a pH value below physiological pH from which the insulin
will precipitate because of the rise in the pH value when the
solution is injected. A drawback with these solutions is that the
particle size distribution of the precipitate formed in the tissue
on injection, and thus the release profile of the medication,
depends on the blood flow at the injection site and other
parameters in a somewhat unpredictable manner. A further drawback
is that the solid particles of the insulin may act as a local
irritant causing inflammation of the tissue at the site of
injection.
Human insulin has three primary amino groups: the N-terminal group
of the A-chain and of the B-chain and the .epsilon.-amino group of
LysB29. Several insulin derivatives which are substituted in one or
more of these groups are known in the prior art. Thus, U.S. Pat.
No. 3,528,960 (Eli Lilly) relates to N-carboxyaroyl insulins in
which one, two or three primary amino groups of the insulin
molecule has a carboxyaroyl group.
GB Patent No. 1.492.997 (Nat. Res. Dev. Corp.) discloses insulin
with a carbamyl substitution at N.epsilon.B29 with an alleged
improved profile of hypoglycaemic effect.
JP laid-open patent application No. 1-254699 (Kodama Co., Ltd.)
discloses insulin wherein a fatty acid is bound to the amino group
of PheB1 or to the .epsilon.-amino group of LysB29 or to both of
these. The stated purpose of the derivatisation is to obtain a
pharmacologically acceptable, stable insulin preparation.
Insulins, which in the B30 position have an amino acid having at
least five carbon atoms which cannot necessarily be coded for by a
triplet of nucleotides, are described in JP laid-open patent
application No. 57-067548 (Shionogi). The insulin analogues are
claimed to be useful in the treatment of diabetes mellitus,
particularly in patients who are insulin resistant due to
generation of bovine or porcine insulin antibodies.
WO 95/07931 (Novo Nordisk A/S) discloses human insulin derivatives
wherein the .epsilon.-amino group of LysB29 has a lipophilic
substituent. These insulin derivatives have a prolonged profile of
action and are soluble at physiological pH values.
GP 894095 discloses insulin derivatives wherein the N-terminal
group of the B-chain and/or the &amino group of Lys in position
B28, B29 or B30 has a substituent of the formula --CO--W--COOH
where W can be a long chain hydrocarbon group. These insulin
derivatives have a prolonged profile of action and are soluble at
physiological pH values.
However, there is still a need for insulins having a more prolonged
profile of action than the insulin derivatives known up till now
and which at the same time are soluble at physiological pH values
and have a potency which is comparable to that of human
insulin.
SUMMARY OF THE INVENTION
The present invention is based on the recognition that the overall
hydrophobicity of an insulin derivative molecule plays an important
role for the in vivo potency of the derivative.
In one aspect the invention is related to insulin derivatives
having a side chain attached either to the .alpha.-amino group of
the N-terminal amino acid residue of the B chain or to an
.epsilon.-amino group of a Lys residue present in the A or the B
chain of the parent insulin moiety via an amide bond, which side
chain comprises at least one aromatic group; at least one free
carboxylic acid group or a group which is negatively charged at
neutral pH, a fatty acid moiety with from 4 to 22 carbon atoms in
the carbon chain; and possible one or more linkers linking the
individual components in the side chain together via amide bonds,
provided that the fatty acid moiety is not a divalent hydrocarbon
chain of the formula --(CH.sub.2).sub.v4C.sub.6H.sub.4
(CH.sub.2).sub.W1-- wherein v and w are integers or one of them is
zero so that the sum of v.sub.4 and w.sub.1 is in the range of 6 to
30.
In one aspect the aromatic group is arylene or heteroarylene group
which may be substituted with one or two groups selected from
--COOH, --SO.sub.3H, --PO.sub.3H.sub.2 and tetrazolyl.
In another aspect the aromatic group is a 5 to 7 membered
heterocyclic ring system containing one or more heteroatoms
selected from nitrogen, oxygen and sulphur.
In another aspect the aromatic group is 8 to 14 membered bi- or
tricyclic heterocyclic ring system containing one or more
heteroatoms selected from nitrogen, oxygen and sulphur.
In a further aspect the linker comprises 1-4 amino acid residues
linked together via amide bonds of which at least one has a free
carboxylic acid group or a group which is negatively charged at
neutral pH.
In a further aspect the fatty acid moiety will have from 10-20,
from 12-18 or from 14 to 18 carbon atoms.
In one aspect the insulin derivative according to the invention has
the formula
##STR00001## wherein Ins is the parent insulin moiety which via the
.alpha.-amino group of the N-terminal amino acid residue of the B
chain or an .epsilon.-amino group of an Lys residue present in the
B chain of the insulin moiety is bound to the CO-- group in the
side chain via an amide bond; X.sub.1 is --(CH.sub.2).sub.n where n
is 1, 2, 3, 4, 5 or 6; NR, where R is hydrogen or
--(CH.sub.2).sub.p--COOH; --(CH.sub.2).sub.p--SO.sub.3H;
--(CH.sub.2).sub.p--PO.sub.3H.sub.2;
--(CH.sub.2).sub.p--O--SO.sub.3H.sub.2;
--(CH.sub.2).sub.p--O--PO.sub.3H.sub.2; arylene substituted with 1
or 2-(CH.sub.2).sub.p--O--COOH groups;
--(CH.sub.2).sub.p-tetrazolyl, where p is an integer in the range
of 1 to 6; --(CR.sub.1R.sub.2).sub.q--NR--CO--, where R.sub.1 and
R.sub.2 independently of each other and independently for each
value of q can be H, --COOH, or OH, q is 1-6 and R is defined as
above; --((CR.sub.3R.sub.4).sub.q1--NR--CO--).sub.2-4, where
R.sub.3 and R.sub.2 independently of each other and independently
for each value of q.sub.1 can be H, --COOH, or OH, q.sub.1 is 2-4
and R is defined as above; or a bond W is arylene or heteroarylene,
which may be substituted with one or two groups selected from the
group consisting of --COOH, --SO.sub.3H, and --PO.sub.3H.sub.2 and
tetrazolyl, or W is a bond; m is 0, 1, 2, 3, 4, 5 or 6; X is
##STR00002## where R is defined as above; or a bond; Y is
--(CR.sub.1R.sub.2).sub.q--NR--CO--, where R.sub.1 and R.sub.2
independently of each other and independently for each value of q
can be H, --COOH, a bond or OH, and q is 1-6; and R is defined as
above; NR where R is defined as above;
--((CR.sub.3R.sub.4).sub.q1--NR--CO).sub.2-4--, where R.sub.3 and
R.sub.2 independently of each other and independently for each
value of q.sub.1 can be H, --COOH, or OH, q.sub.1 is 1-6 and R is
defined as above; or a bond; Q is --(CH.sub.2).sub.r-- where r is
an integer from 4 to 22; a divalent hydrocarbon chain comprising 1,
2 or 3 --CH.dbd.CH-- groups and a number of --CH.sub.2-- groups
sufficient to give a total number of carbon atoms in the chain in
the range of 4 to 22; or a divalent hydrocarbon chain of the
formula
--(CH.sub.2).sub.s-Q.sub.1-(C.sub.6H.sub.4).sub.v1-Q.sub.2-(CH.sub.2).sub-
.W-Q.sub.3-(C.sub.6H.sub.4).sub.v2-Q.sub.4-(CH.sub.2).sub.t-Q.sub.5-(C.sub-
.6H.sub.4).sub.v3-Q.sub.6-(CH.sub.2).sub.z-- wherein
Q.sub.1-Q.sub.6 independently of each other can be O; S or a bond;
s, w, t and z independently of each other are zero or an integer
from 1 to 10 so that the sum of s, w, t and z is in the range from
4 to 22, and v.sub.1, v.sub.2, and v.sub.3 independently of each
other can be zero or 1, provided that when W is a bond then Q is
not a divalent hydrocarbon chain of the formula
--(CH.sub.2).sub.v4C.sub.6H.sub.4(CH.sub.2).sub.W1-- wherein
v.sub.4 and w.sub.1 are integers or one of them is zero so that the
sum of v.sub.4 and w.sub.1 is in the range of 6 to 22; and Z is:
--COOH; --CO-Asp; --CO-Glu; --CO-Gly; --CO-Sar; --CH(COOH).sub.2;
--N(CH.sub.2COOH).sub.2; --SO.sub.3H --PO.sub.3H.sub.2;
O--SO.sub.3H; O--PO.sub.3H.sub.2; -tetrazolyl or where W.sub.1 is
arylene or heteroarylene substituted with one or two groups
selected from --COOH, --SO.sub.3H, and --PO.sub.3H.sub.2 and
tetrazolyl; provided that if W is a bond and v.sub.1, v.sub.2 and
v.sub.3 are all zero and Q.sub.1-6 are all bonds, then Z is
--O--W.sub.1 and any Zn.sup.2+ complex thereof.
In one aspect of the invention, the side is attached to the
.alpha.-amino group of the N-terminal amino acid residue of the B
chain of the parent insulin.
In another aspect of the invention, the side chain is attached to
the .epsilon.-amino group of a Lys residue present in the B chain
of the parent insulin. In a further aspect, the side chain is
attached to the &amino group of a Lys residue present in
position 28 or 29 of the B chain.
In one aspect W is phenylene. If the phenylene group comprises
substituents such substituents can be attached in the 1,4; the 1,3
or the 1,2 positions.
In a further aspect W is isophtatalic acid or a derivatives
thereof.
In another aspect W is 5-7 membered heterocyclic ring system
comprising nitrogen, oxygen or sulphur or a 5 membered heterocyclic
ring system comprising at least one oxygen such as furan.
Non limiting examples of heterocyclic ring systems are furylene,
thienylene, pyrrolylene, oxazolylene, thiazolylene, imidazolylene,
isoxazolylene, isothiazolylene, 1,2,3-triazolylene,
1,2,4-triazolylene, pyranylene, pyridylene, pyridazinylene, and
pyrimidinylene.
In one aspect n is 1 or 2. In another aspect q is 1, 2 or 3. In a
further aspect m is 1 or 2.
In one aspect Q is --(CH.sub.2).sub.r-- where r is an integer from
4 to 22, 8 to 20, 12 to 20, 12-16, 10-16; 10-20, 14-18 or
14-16.
In another aspect Q is a divalent hydrocarbon chain comprising 1, 2
or 3-CH.dbd.CH-- groups and a number of --CH.sub.2-- groups
sufficient to give a total number of carbon atoms in the chain in
the range of 4 to 22, 8 to 20, 12 to 20, 12-16, 10-16; 10-20, 14-18
or 14-16.
The fatty diacid will typically comprise from 4 to 18, from 6 to
18, from 8 to 16, from 8 to 22, from 8 to 17, from 8 to 15, from 10
to 18, from 10 to 16 and from 6 to 17 carbon atoms in the carbon
chain.
Non limiting examples of the fatty diacid moiety are diacids with
the formula HOOC--(CH.sub.2).sub.rt--COOH, where r.sub.1 is from 4
to 22
In one aspect Q.sub.1-Q.sub.6 are all a bond and the sum of s, w, t
and z is from 6 to 18.
In another aspect Q.sub.1-Q.sub.6 are all a bond, the sum of s and
z is from 6 to 18, and w and t are zero.
In another aspect Q.sub.1-Q.sub.6 are all a bond, v.sub.1 is zero,
the sum of s and z is from 6 to 18, and w and t are zero.
In another aspect two of Q.sub.1-Q.sub.6 are oxygen and the other
Q's are a bonds.
In one aspect Q.sub.1, Q.sub.2, Q.sub.5 and -Q.sub.6 are all a
bond, v.sub.2 is 1 and v.sub.1 and v.sub.3 are zero.
In another aspect Q.sub.1, Q.sub.2, Q.sub.5 and -Q.sub.6 are all a
bond, v.sub.2 is 1 and v.sub.1 and v.sub.3 are zero and Q.sub.3 and
Q.sub.4 are oxygen.
In one aspect R is hydrogen or --(CH).sub.p where p is 1-3.
In one aspect X.sub.1 is --(CH.sub.2).sub.1-4--NH--CO--.
In another aspect X.sub.1 and Y are a bond and X is
##STR00003##
where R is --(CH.sub.2).sub.p--COOH, where p is 1-4 or 1-2.
In another aspect X is a bond or .alpha.- or .gamma.-Glu.
In one aspect Z is --COOH
In another aspect Z is --CO-Asp.
In another aspect Z is --CO-Glu.
In another aspect Z is --CO-Gly.
In another aspect Z is --CO-Sar.
In another aspect Z is --CH(COOH).sub.2.
In another aspect Z is --N(CH.sub.2COOH).sub.2.
In another aspect Z is --SO.sub.3H.
In another aspect Z is --PO.sub.3H.
In another aspect Z is O--SO.sub.3H;
In another aspect Z is O--PO.sub.3H.sub.2;
In another aspect Z is tetrazolyl.
In another aspect Z is --OC.sub.6H.sub.4COOH.
DETAILED DESCRIPTION OF THE INVENTION
The present insulin derivatives are characterized by having a side
chain attached to a Lys group in either the B or the A chain or to
the N-terminal amino group in the B-chain of the parent insulin
molecule which side chain comprises an aromatic group and a fatty
diacid moity.
The insulin derivative according to the invention is furthermore
characterized in having at least one free carboxylic acid group in
the side chain and may comprise up to 2 or three free carboxylic
acid group or a group which is negatively charged at neutral
pH.
The insulin derivatives will only contain one lysine residue. This
lysine residue may either be in position B29 as in human insulin or
in one of position B3, B30 or B23 to B28.
The insulin moiety--in the present text also referred to as the
parent insulin--of an insulin derivative according to the invention
can be a naturally occurring insulin such as human insulin or
porcine insulin. Alternatively, the parent insulin can be an
insulin analogue.
In one group of parent insulin analogues, the amino acid residue at
position A21 is Asn.
In another group of parent insulin analogues, the amino acid
residue at position A21 is Gly. Specific examples from this group
of analogues are Gly.sup.A21 human insulin, Gly.sup.A21
des(B30)human insulin; and Gly.sup.A21Arg.sup.B31Arg.sup.B32 human
insulin.
In another group of parent insulin analogues, the amino acid
residue at position B1 has been deleted. A specific example from
this group of parent insulin analogues is desB1 human insulin.
In another group of parent insulin analogues, the amino acid
residue at position B30 has been deleted. A specific example from
this group of parent insulin analogues is desB30 human insulin.
In another group of parent insulin analogues, the amino acid
residue at position B28 is Asp. A specific example from this group
of parent insulin analogues is Asp.sup.B28 human insulin.
In another group of parent insulin analogues, the amino acid
residue at position B28 is Lys and the amino acid residue at
position B29 is Pro. A specific example from this group of parent
insulin analogues is Lys.sup.B28Pro.sup.B29 human insulin.
In another group of parent insulin analogues the amino acid residue
in position B30 is Lys and the amino acid residue in position B29
is any codable amino acid except Cys, Met, Arg and Lys. An example
is an insulin analogue where the amino acid residue at position B29
is Thr and the amino acid residue at position B30 is Lys. A
specific example from this group of parent insulin analogues is
Thr.sup.B29Lys.sup.B30 human insulin.
In another group of parent insulin analogues, the amino acid
residue at position B3 is Lys and the amino acid residue at
position B29 is Glu. A specific example from this group of parent
insulin analogues is Lys.sup.B3Glu.sup.B29 human insulin.
Examples of insulin derivatives according to the invention are the
following compounds:
N.sup..epsilon.B29--[N..(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-CH.su-
b.2-para C.sub.6H.sub.4CO] desB30 human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.13CO)--N-(carboxyethyl)-CH.su-
b.2-para C.sub.6H.sub.4CO] desB30 human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.15CO)--N-(carboxyethyl)-CH.su-
b.2-para C.sub.6H.sub.4CO] desB30 human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.16CO)--N-(carboxyethyl)-CH.su-
b.2-para C.sub.6H.sub.4CO] desB30 human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxymethyl)-para
C.sub.6H.sub.4CO] desB30 human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-CH.su-
b.2-(2,5-furanylene)CO] desB30 human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-CH.su-
b.2-meta-C.sub.6H.sub.4CO] desB30 human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-CH.su-
b.2-ortho C.sub.6H.sub.4CO] desB30 human insulin;
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--NH--CH.sub.2-para-C.su-
b.6H.sub.4CO-gamma-Glu] desB30 human insulin;
N.sup..epsilon.B29-[5-N--(HOOC(CH.sub.2).sub.14CO)NH-(3-COOH--C.sub.6H.su-
b.3CO)]desB30 human insulin;
N.sup..epsilon.B29-[5-N..(HOOC(CH.sub.2).sub.16CO)NH-(3-COOH--C.sub.6H.su-
b.3CO)]desB30 human insulin;
N.sup..epsilon.B29-[5-N--(HOOC(CH.sub.2).sub.16CO)--N-(carboxyethyl-Gly)--
N-(3-COOH--C.sub.6H.sub.3CO)]desB30 human insulin and
N.sup..epsilon.B29.epsilon.-[3-Carboxy-5-(octadecandioyl-N-carboxyethyl-G-
ly)amino-benzoyl] desB30 human insulin.
Insulin derivatives according to the invention may be provided in
the form of essentially zinc free compounds or in the form of zinc
complexes. When zinc complexes of an insulin derivative according
to the invention are provided, two Zn.sup.2+ ions, three Zn.sup.2+
ions or four Zn.sup.2+ ions can be bound to each insulin hexamer.
Solutions of zinc complexes of the insulin derivatives will contain
mixtures of such species.
In a further aspect of the invention, a pharmaceutical composition
comprising a therapeutically effective amount of an insulin
derivative according to the invention together with a
pharmaceutically acceptable carrier can be provided for the
treatment of type 1 diabetes, type 2 diabetes and other states that
cause hyperglycaemia in patients in need of such a treatment. An
insulin derivative according to the invention can be used for the
manufacture of a pharmaceutical composition for use in the
treatment of type 1 diabetes, type 2 diabetes and other states that
cause hyperglycaemia.
In a further aspect of the invention, there is provided a
pharmaceutical composition for treating type 1 diabetes, type 2
diabetes and other states that cause hyperglycaemia in a patient in
need of such a treatment, comprising a therapeutically effective
amount of an insulin derivative according to the invention in
mixture with an insulin or an insulin analogue which has a rapid
onset of action, together with pharmaceutically acceptable carriers
and additives.
In a further aspect of the invention, there is provided a method of
treating type 1 diabetes, type 2 diabetes and other states that
cause hyperglycaemia in a patient in need of such a treatment,
comprising administering to the patient a therapeutically effective
amount of an insulin derivative according to the invention together
with a pharmaceutically acceptable carrier and pharmaceutical
acceptable additives.
In a further aspect of the invention, there is provided a method of
treating type 1 diabetes, type 2 diabetes and other states that
cause hyperglycaemia in a patient in need of such a treatment,
comprising administering to the patient a therapeutically effective
amount of an insulin derivative according to the invention in
mixture with an insulin or an insulin analogue which has a rapid
onset of action, together with a pharmaceutically acceptable
carrier and pharmaceutical acceptable additives.
In a further aspect of the invention, there is provided a use of an
insulin derivative according to the invention for the manufacture
of a medicament for blood glucose lowering.
In a further aspect of the invention, there is provided a use of an
insulin derivative according to the invention for the manufacture
of a medicament for treatment of diabetes.
In a further aspect, the present invention relates to insulin
derivatives which have an overall hydrophobicity which is
essentially similar to that of human insulin.
In one aspect, the insulin derivatives of the present invention
have a hydrophobic index, k'rel, which is in the range from about
0.02 to about 10, from about 0.1 to about 5; from about 0.5 to
about 5; or from about 0.5 to about 2.
In another aspect, the invention relates to a pharmaceutical
composition comprising an insulin derivative according to the
invention which is soluble at physiological pH values.
In another aspect, the invention relates to a pharmaceutical
composition comprising an insulin derivative according to the
invention which is soluble at pH values in the interval from about
6.5 to about 8.5.
In another aspect, the invention relates to a pharmaceutical
composition with a prolonged profile of action which comprises an
insulin derivative according to the invention.
In another aspect, the invention relates to a pharmaceutical
composition which is a solution containing from about 120 nmol/ml
to about 2400 nmol/ml, from about 400 nmol/ml to about 2400
nmol/ml, from about 400 nmol/ml to about 1200 nmol/ml, from about
600 nmol/ml to about 2400 nmol/ml, or from about 600 nmol/ml to
about 1200 nmol/ml of an insulin derivative according to the
invention or of a mixture of the insulin derivative according to
the invention with a rapid acting insulin analogue.
The starting product for the acylation, the parent insulin or
insulin analogue or a precursor thereof can be produced by either
well-know organic synthesis or by well known recombinant production
in suitable transformed microorganisms. Thus the insulin starting
product can be produced by a method which comprises culturing a
host cell containing a DNA sequence encoding the polypeptide and
capable of expressing the polypeptide in a suitable nutrient medium
under conditions permitting the expression of the peptide, after
which the resulting peptide is recovered from the culture. As an
example desB(30) human insulin can be produced from a human insulin
precursor B(1-29)-Ala-Ala-Lys-A(1-21) which is produced in yeast as
disclosed in U.S. Pat. No. 4,916,212. This insulin precursor can
then be converted into desB30 human insulin by ALP cleavage of the
Ala-Ala-Lys peptide chain to give desB30 human insulin which can
then be acylated to give the present insulin derivatives.
The medium used to culture the cells may be any conventional medium
suitable for growing the host cells, such as minimal or complex
media containing appropriate supplements. Suitable media are
available from commercial suppliers or may be prepared according to
published recipes (e.g. in catalogues of the American Type Culture
Collection). The peptide produced by the cells may then be
recovered from the culture medium by conventional procedures
including separating the host cells from the medium by
centrifugation or filtration, precipitating the proteinaceous
components of the supernatant or filtrate by means of a salt, e.g.
ammonium sulphate, purification by a variety of chromatographic
procedures, e.g. ion exchange chromatography, gel filtration
chromatography, affinity chromatography, or the like, dependent on
the type of peptide in question.
The DNA sequence encoding the parent insulin may suitably be of
genomic or cDNA origin, for instance obtained by preparing a
genomic or cDNA library and screening for DNA sequences coding for
all or part of the polypeptide by hybridisation using synthetic
oligonucleotide probes in accordance with standard techniques (see,
for example, Sambrook, J, Fritsch, E F and Maniatis, T, Molecular
Cloning: A Laboratory Manual, Cold Spring Harbor Laboratory Press,
New York, 1989). The DNA sequence encoding the polypeptide may also
be prepared synthetically by established standard methods, e.g. the
phosphoamidite method described by Beaucage and Caruthers,
Tetrahedron Letters 22 (1981), 1859-1869, or the method described
by Matthes et al., EMBO Journal 3 (1984), 801-805. The DNA sequence
may also be prepared by polymerase chain reaction using specific
primers, for instance as described in U.S. Pat. No. 4,683,202 or
Saiki et al., Science 239 (1988), 487-491.
The DNA sequence may be inserted into any vector which may
conveniently be subjected to recombinant DNA procedures, and the
choice of vector will often depend on the host cell into which it
is to be introduced. Thus, the vector may be an autonomously
replicating vector, i.e. a vector which exists as an
extrachromosomal entity, the replication of which is independent of
chromosomal replication, e.g. a plasmid. Alternatively, the vector
may be one which, when introduced into a host cell, is integrated
into the host cell genome and replicated together with the
chromosome(s) into which it has been integrated.
The vector is preferably an expression vector in which the DNA
sequence encoding the peptide is operably linked to additional
segments required for transcription of the DNA, such as a promoter.
The promoter may be any DNA sequence which shows transcriptional
activity in the host cell of choice and may be derived from genes
encoding proteins either homologous or heterologous to the host
cell. Examples of suitable promoters for directing the
transcription of the DNA encoding the parent insulin in a variety
of host cells are well known in the art, cf. for instance Sambrook
et al., supra.
The DNA sequence encoding the parent insulin may also, if
necessary, be operably connected to a suitable terminator,
polyadenylation signals, transcriptional enhancer sequences, and
translational enhancer sequences. The recombinant vector of the
invention may further comprise a DNA sequence enabling the vector
to replicate in the host cell in question.
The vector may also comprise a selectable marker, e.g. a gene the
product of which complements a defect in the host cell or one which
confers resistance to a drug, e.g. ampicillin, kanamycin,
tetracyclin, chloramphenicol, neomycin, hygromycin or
methotrexate.
To direct a peptide of the present invention into the secretory
pathway of the host cells, a secretory signal sequence (also known
as a leader sequence, prepro sequence or pre sequence) may be
provided in the recombinant vector. The secretory signal sequence
is joined to the DNA sequence encoding the peptide in the correct
reading frame. Secretory signal sequences are commonly positioned
5' to the DNA sequence encoding the peptide. The secretory signal
sequence may be that normally associated with the peptide or may be
from a gene encoding another secreted protein.
The procedures used to ligate the DNA sequences coding for the
parent insulin, the promoter and optionally the terminator and/or
secretory signal sequence, respectively, and to insert them into
suitable vectors containing the information necessary for
replication, are well known to persons skilled in the art (cf., for
instance, Sambrook, J, Fritsch, E F and Maniatis, T, Molecular
Cloning: A Laboratory Manual, Cold Spring Harbor Laboratory Press,
New York, 1989).
The host cell into which the DNA sequence or the recombinant vector
is introduced may be any cell which is capable of producing the
parent insulin and includes bacteria, yeast, fungi and higher
eukaryotic cells. Examples of suitable host cells well known and
used in the art are, without limitation, E. coli, Saccharomyces
cerevisiae, or mammalian BHK or CHO cell lines.
The parent insulin molecule is then converted into the insulin
derivatives of the invention by introducing of the relevant side
chain in either the B1 position or in the chosen Lys position in
the B-chain. The side chain can be introduced by any convenient
method and many methods are disclosed in the prior art for
acylation of an amino group. More details will appear from the
following examples.
Pharmaceutical Compositions
Pharmaceutical compositions containing an insulin derivative
according to the present invention may be administered parenterally
to patients in need of such a treatment. Parenteral administration
may be performed by subcutaneous, intramuscular or intravenous
injection by means of a syringe, optionally a pen-like syringe.
Alternatively, parenteral administration can be performed by means
of an infusion pump. Further options are to administer the insulin
nasally or pulmonally, preferably in compositions, powders or
liquids, specifically designed for the purpose.
Injectable compositions of the insulin derivatives of the invention
can be prepared using the conventional techniques of the
pharmaceutical industry which involve dissolving and mixing the
ingredients as appropriate to give the desired end product. Thus,
according to one procedure, an insulin derivative according to the
invention is dissolved in an amount of water which is somewhat less
than the final volume of the composition to be prepared. An
isotonic agent, a preservative and a buffer is added as required
and the pH value of the solution is adjusted..if necessary..using
an acid, e.g. hydrochloric acid, or a base, e.g. aqueous sodium
hydroxide as needed. Finally, the volume of the solution is
adjusted with water to give the desired concentration of the
ingredients.
In a further aspect of the invention the buffer is selected from
the group consisting of sodium acetate, sodium carbonate, citrate,
glycylglycine, histidine, glycine, lysine, arginine, sodium
dihydrogen phosphate, disodium hydrogen phosphate, sodium
phosphate, and tris(hydroxymethyl)-aminomethan, bicine, tricine,
malic acid, succinate, maleic acid, fumaric acid, tartaric acid,
aspartic acid or mixtures thereof. Each one of these specific
buffers constitutes an alternative aspect of the invention.
In a further aspect of the invention the formulation further
comprises a pharmaceutically acceptable preservative which may be
selected from the group consisting of phenol, o-cresol, m-cresol,
p-cresol, methyl p-hydroxybenzoate, propyl p-hydroxybenzoate,
2-phenoxyethanol, butyl p-hydroxybenzoate, 2-phenylethanol, benzyl
alcohol, chlorobutanol, and thiomerosal, bronopol, benzoic acid,
imidurea, chlorohexidine, sodium dehydroacetate, chlorocresol,
ethyl p-hydroxybenzoate, benzethonium chloride, chlorphenesine
(3p-chlorphenoxypropane-1,2-diol) or mixtures thereof. In a further
aspect of the invention the preservative is present in a
concentration from 0.1 mg/ml to 20 mg/ml. In a further aspect of
the invention the preservative is present in a concentration from
0.1 mg/ml to 5 mg/ml. In a further aspect of the invention the
preservative is present in a concentration from 5 mg/ml to 10
mg/ml. In a further aspect of the invention the preservative is
present in a concentration from 10 mg/ml to 20 mg/ml. Each one of
these specific preservatives constitutes an alternative aspect of
the invention. The use of a preservative in pharmaceutical
compositions is well-known to the skilled person. For convenience
reference is made to Remington: The Science and Practice of
Pharmacy, 19.sup.th edition, 1995.
In a further aspect of the invention the formulation further
comprises an isotonic agent which may be selected from the group
consisting of a salt (e.g. sodium chloride), a sugar or sugar
alcohol, an amino acid (e.g. glycine, L-histidine, arginine,
lysine, isoleucine, aspartic acid, tryptophan, threonine), an
alditol (e.g. glycerol (glycerine), 1,2-propanediol
(propyleneglycol), 1,3-propanediol, 1,3-butanediol)
polyethyleneglycol (e.g. PEG400), or mixtures thereof. Any sugar
such as mono-, di-, or polysaccharides, or water-soluble glucans,
including for example fructose, glucose, mannose, sorbose, xylose,
maltose, lactose, sucrose, trehalose, dextran, pullulan, dextrin,
cyclodextrin, soluble starch, hydroxyethyl starch and
carboxymethylcellulose-Na may be used. In one aspect the sugar
additive is sucrose. Sugar alcohol is defined as a C4-C8
hydrocarbon having at least one --OH group and includes, for
example, mannitol, sorbitol, inositol, galactitol, dulcitol,
xylitol, and arabitol. In one aspect the sugar alcohol additive is
mannitol. The sugars or sugar alcohols mentioned above may be used
individually or in combination. There is no fixed limit to the
amount used, as long as the sugar or sugar alcohol is soluble in
the liquid preparation and does not adversely effect the
stabilizing effects achieved using the methods of the invention. In
one aspect, the sugar or sugar alcohol concentration is between
about 1 mg/ml and about 150 mg/ml. In a further aspect of the
invention the isotonic agent is present in a concentration from 1
mg/ml to 50 mg/ml. In a further aspect of the invention the
isotonic agent is present in a concentration from 1 mg/ml to 7
mg/ml. In a further aspect of the invention the isotonic agent is
present in a concentration from 8 mg/ml to 24 mg/ml. In a further
aspect of the invention the isotonic agent is present in a
concentration from 25 mg/ml to 50 mg/ml. Each one of these specific
isotonic agents constitutes an alternative aspect of the invention.
The use of an isotonic agent in pharmaceutical compositions is
well-known to the skilled person. For convenience reference is made
to Remington: The Science and Practice of Pharmacy, 19.sup.th
edition, 1995.
Typical isotonic agents are sodium chloride, mannitol, dimethyl
sulfone and glycerol and typical preservatives are phenol,
m-cresol, methyl p-hydroxybenzoate and benzyl alcohol.
Examples of suitable buffers are sodium acetate, glycylglycine,
HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid) and
sodium phosphate.
A composition for nasal administration of an insulin derivative
according to the present invention may, for example, be prepared as
described in European Patent No. 272097 (to Novo Nordisk A/S).
Compositions containing insulins of this invention can be used in
the treatment of states which are sensitive to insulin. Thus, they
can be used in the treatment of type 1 diabetes, type 2 diabetes
and hyperglycaemia for example as sometimes seen in seriously
injured persons and persons who have undergone major surgery. The
optimal dose level for any patient will depend on a variety of
factors including the efficacy of the specific insulin derivative
employed, the age, body weight, physical activity, and diet of the
patient, on a possible combination with other drugs, and on the
severity of the state to be treated. It is recommended that the
daily dosage of the insulin derivative of this invention be
determined for each individual patient by those skilled in the art
in a similar way as for known insulin compositions.
Where expedient, the insulin derivatives of this invention may be
used in mixture with other types of insulin, e.g. insulin analogues
with a more rapid onset of action. Examples of such insulin
analogues are described e.g. in the European patent applications
having the publication Nos. EP 214826 (Novo Nordisk A/S), EP 375437
(Novo Nordisk A/S) and EP 383472 (Eli Lilly & Co.).
In a further aspect of the present invention the present compounds
are administered in combination with one or more further active
substances in any suitable ratios. Such further active agents may
be selected from antidiabetic agents, antihyperlipidemic agents,
antiobesity agents, antihypertensive agents and agents for the
treatment of complications resulting from or associated with
diabetes.
Suitable antidiabetic agents include insulin, GLP-1 (glucagon like
peptide-1) derivatives such as those disclosed in WO 98/08871 (Novo
Nordisk A/S), which is incorporated herein by reference, as well as
orally active hypoglycemic agents.
Suitable orally active hypoglycemic agents preferably include
imidazolines, sulfonylureas, biguanides, meglitinides,
oxadiazolidinediones, thiazolidinediones, insulin sensitizers,
.alpha.-glucosidase inhibitors, agents acting on the ATP-dependent
potassium channel of the pancreatic .beta.-cells eg potassium
channel openers such as those disclosed in WO 97/26265, WO 99/03861
and WO 00/37474 (Novo Nordisk A/S) which are incorporated herein by
reference, potassium channel openers, such as ormitiglinide,
potassium channel blockers such as nateglinide or BTS-67582,
glucagon antagonists such as those disclosed in WO 99/01423 and WO
00/39088 (Novo Nordisk A/S and Agouron Pharmaceuticals, Inc.), all
of which are incorporated herein by reference, GLP-1 agonists such
as those disclosed in WO 00/42026 (Novo Nordisk A/S and Agouron
Pharmaceuticals, Inc.), which are incorporated herein by reference,
DPP-IV (dipeptidyl peptidase-IV) inhibitors, PTPase (protein
tyrosine phosphatase) inhibitors, inhibitors of hepatic enzymes
involved in stimulation of gluconeogenesis and/or glycogenolysis,
glucose uptake modulators, GSK-3 (glycogen synthase kinase-3)
inhibitors, compounds modifying the lipid metabolism such as
antihyperlipidemic agents and antilipidemic agents, compounds
lowering food intake, and PPAR (peroxisome proliferator-activated
receptor) and RXR (retinoid X receptor) agonists such as ALRT-268,
LG-1268 or LG-1069.
DEFINITIONS
With "desB30" or "B(1-29)" is meant a natural insulin B chain or an
analogue thereof lacking the B30 amino acid residue and "A(1-21)"
means the natural insulin A chain or an analogue thereof. The
C-peptide and its amino acid sequence are indicated in the three
letter amino acid code. DesB30, desB29 human insulin is a human
insulin lacking B29 and B30.
With "B1", "A1" etc. is meant the amino acid residue in position 1
in the B chain of insulin (counted from the N-terminal end) and the
amino acid residue in position 1 in the A chain of insulin (counted
from the N-terminal end), respectively. The amino acid residue in a
specific position may also be denoted as e.g. Phe.sup.B1 which
means that the amino acid residue in position B1 is a phenylalanine
residue.
With "Insulin" as used herein is meant human insulin with disulfide
bridges between Cys.sup.A7 and Cys.sup.B7 and between Cys.sup.A20
and Cys.sup.B19 and an internal disulfide bridge between Cys.sup.A6
and Cys.sup.A11, porcine insulin and bovine insulin.
By "insulin analogue" as used herein is meant a polypeptide which
has a molecular structure which formally can be derived from the
structure of a naturally occurring insulin, for example that of
human insulin, by deleting and/or substituting at least one amino
acid residue occurring in the natural insulin and/or by adding at
least one amino acid residue. The added and/or substituted amino
acid residues can either be codable amino acid residues or other
naturally occurring amino acid residues or purely synthetic amino
acid residues.
The insulin analogues may be such wherein position 28 of the B
chain may be modified from the natural Pro residue to Asp, Lys, or
Ile. Lys in position B29 may also be modified to Pro. Furthermore
B30 may be Lys in which case B29 is different from Cys, Met, Arg
and Lys.
Also, Asn at position A21 may be modified to Ala, Gln, Glu, Gly,
His, Ile, Leu, Met, Ser, Thr, Trp, Tyr or Val, in particular to
Gly, Ala, Ser, or Thr and in particular to Gly. Furthermore, Asn at
position B3 may be modified to Lys or Asp. Further examples of
insulin analogues are des(B30) human insulin, insulin analogues
wherein one or both of B1 and B2 have been deleted; insulin
analogues wherein the A-chain and/or the B-chain have an N-terminal
extension and insulin analogues wherein the A-chain and/or the
B-chain have a C-terminal extension. Further insulin analogues are
such wherein one or more of B26-B30 have been deleted.
By "insulin derivative" as used herein is meant a naturally
occurring insulin or an insulin analogue which has been chemically
modified, e.g. by introducing a side chain in one or more positions
of the insulin backbone or by oxidizing or reducing groups of the
amino acid residues in the insulin or by acylating a free amino
group or a hydroxy group.
The expression "a codable amino acid" or "a codable amino acid
residue" is used to indicate an amino acid or amino acid residue
which can be coded for by a triplet ("codon") of nucleotides.
hGlu is homoglutamic acid.
.alpha.-Asp is the L-form of --HNCH(CO--)CH.sub.2COOH.
.beta.-Asp is the L-form of --HNCH(COOH)CH.sub.2CO--.
.alpha.-Glu is the L-form of --HNCH(CO--)CH.sub.2CH.sub.2COOH.
.gamma.-Glu is the L-form of --HNCH(COOH)CH.sub.2CH.sub.2CO--.
.alpha.-hGlu is the L-form of
--HNCH(CO--)CH.sub.2CH.sub.2CH.sub.2COOH.
.delta.-hGlu is the L-form of
--HNCH(COOH)CH.sub.2CH.sub.2CH.sub.2CO--.
.beta.-Ala is --NH--CH.sub.2--CH.sub.2--CO--.
Sar is sarcosine (N-methylglycine).
The expression "an amino acid residue having a carboxylic acid
group in the side chain" designates amino acid residues like Asp,
Glu and hGlu. The amino acids can be in either the L- or
D-configuration. If nothing is specified it is understood that the
amino acid residue is in the L configuration.
The expression "an amino acid residue having a neutral side chain"
designates amino acid residues like Gly, Ala, Val, Leu, Ile, Phe,
Pro, Ser, Thr, Cys, Met, Tyr, Asn and Gln.
With "activated acid" is meant a carboxylic acid in which an
activated leaving group has been attached to the acyl carbon
enabling reaction with an amino group under formation of an amide
bond and release of the leaving group. Activated fatty acids may be
activated esters of fatty acids, activated amides of fatty acids
and anhydrides or chlorides. Activated fatty acid includes
derivatives thereof such as N-hydroxybenzotriazole and
N-hydroxysuccinimide.
With "fatty acid" is meant a linear or branched carboxylic acids
having at least 2 carbon atoms and being saturated or unsaturated.
Examples of fatty acids are capric acid, lauric acid, tetradecanoic
acid (myristic acid), pentadecanoic acid, palmitic acid,
heptadecanoic acid, and stearic acid.
The term "arylene" as used herein is intended to include divalent,
carbocyclic, aromatic ring systems such as 6 membered monocyclic
and 9 to 14 membered bi- and tricyclic, divalent, carbocyclic,
aromatic ring systems. Representative examples are phenylene,
biphenylylene, naphthylene, anthracenylene, phenanthrenylene,
fluorenylene, indenylene, azulenylene and the like. Arylene is also
intended to include the partially hydrogenated derivatives of the
ring systems enumerated above. Non-limiting examples of such
partially hydrogenated derivatives are
1,2,3,4-tetrahydronaphthylene, 1,4-dihydronaphthylene and the
like.
The term "heteroarylene" as used herein is intended to include
divalent, aromatic, heterocyclic ring systems containing one or
more heteroatoms selected from nitrogen, oxygen and sulfur such as
5 to 7 membered monocyclic and 8 to 14 membered bi- and tricyclic
aromatic, heterocyclic ring systems containing one or more
heteroatoms selected from nitrogen, oxygen and sulfur.
Representative examples are furylene, thienylene, pyrrolylene,
oxazolylene, thiazolylene, imidazolylene, isoxazolylene,
isothiazolylene, 1,2,3-triazolylene, 1,2,4-triazolylene,
pyranylene, pyridylene, pyridazinylene, pyrimidinylene,
pyrazinylene, 1,2,3-triazinylene, 1,2,4-triazinylene,
1,3,5-triazinylene, 1,2,3-oxadiazolylene, 1,2,4-oxadiazolylene,
1,2,5-oxadiazolylene, 1,3,4-oxadiazolylene, 1,2,3-thiadiazolylene,
1,2,4-thiadiazolylene, 1,2,5-thiadiazolylene,
1,3,4-thia-diazolylene, tetrazolylene, thiadiazinylene, indolylene,
isoindolylene, benzofurylene, benzothienylene, indazolylene,
benzimidazolylene, benzthiazolylene, benzisothiazolylene,
benzoxazolylene, benzisoxazolylene, purinylene, quinazolinylene,
quinolizinylene, quinolinylene, isoquinolinylene, quinoxalinylene,
naphthyridinylene, pteridinylene, carbazolylene, azepinylene,
diazepinylene, acridinylene and the like. Heteroaryl is also
intended to include the partially hydrogenated derivatives of the
ring systems enumerated above. Non-limiting examples of such
partially hydrogenated derivatives are 2,3-dihydrobenzofuranylene,
pyrrolinylene, pyrazolinylene, indolinylene, oxazolidinylene,
oxazolinylene, oxazepinylene and the like.
The term "optionally substituted" as used herein means that the
groups in question are either unsubstituted or substituted with one
or more of the substituents specified. When the groups in question
are substituted with more than one substituent the substituents may
be the same or different.
When an insulin derivative according to the invention is stated to
be "soluble at physiological pH values" it means that the insulin
derivative can be used for preparing insulin compositions that are
fully dissolved at physiological pH values. Such favourable
solubility may either be due to the inherent properties of the
insulin derivative alone or a result of a favourable interaction
between the insulin derivative and one or more ingredients
contained in the vehicle.
The following abbreviations and methods have been used in the
specification and examples:
Bzl=Bn: benzyl
DIPEA=DIEA: N,N-diisopropylethylamine
DMF: N,N-dimethylformamide
tBu: tert-butyl
TSTU: O--(N-succinimidyl)-1,1,3,3-tetramethyluronium
tetrafluoroborate
THF: Tetrahydrofuran
EtOAc=AcOEt: Ethyl acetate
DIPEA: Diisopropylethylamine
HOAt: 1-Hydroxy-7-azabenzotriazole
TEA: triethyl amine
Su: succinimidyl=2,5-dioxo-pyrrolidin-1-yl
TFA: trifluoracetic acid
DCM: dichloromethane
DMSO: dimethyl sulphoxide
HOBt: 1-hydroxybenzotriazole
TRIS: Triisopropylsilane
EDAC: N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide
hydrochloride
NMP: 1-methyl-2-pyrrolidone
TLC: Thin Layer Chromatography
RT: room temperature
R.sub.t: Retention time
MeOH: methanol
DCC: Dicyclohexylcarondiimide
AcOH: Acetic acid
DIC: Diisopropylcarbodiimide
All references, including publications, patent applications, and
patents, cited herein are hereby incorporated by reference in their
entirety and to the same extent as if each reference were
individually and specifically indicated to be incorporated by
reference and were set forth in its entirety herein (to the maximum
extent permitted by law).
All headings and sub-headings are used herein for convenience only
and should not be construed as limiting the invention in any
way.
The use of any and all examples, or exemplary language (e.g., "such
as") provided herein, is intended merely to better illuminate the
invention and does not pose a limitation on the scope of the
invention unless otherwise claimed. No language in the
specification should be construed as indicating any non-claimed
element as essential to the practice of the invention.
The citation and incorporation of patent documents herein is done
for convenience only and does not reflect any view of the validity,
patentability, and/or enforceability of such patent documents.
This invention includes all modifications and equivalents of the
subject matter recited in the claims appended hereto as permitted
by applicable law.
EXAMPLES
HPLC-MS: The following instrumentation was used: Hewlett Packard
series 1100 G1312A Bin Pump Hewlett Packard series 1100 Column
compartment Hewlett Packard series 1100 G1315A DAD diode array
detector Hewlett Packard series 1100 MSD Sedere 75 Evaporative
Light Scattering detector The instrument was controlled by HP
Chemstation software. The HPLC pump was connected to two eluent
reservoirs containing: A: 0.01% TFA in water B: 0.01% TFA in
acetonitrile
The analysis is performed at 40 C by injecting an appropriate
volume of the sample (preferably 1 .mu.l) onto the column which is
eluted with a gradient of acetonitrile.
The HPLC conditions, detector settings and mass spectrometer
settings used are giving in the following:
Column: Waters Xterra MS C-18 X 3 mm id 5 .mu.m
Gradient: 5%-100% acetonitrile linear during 7.5 min at 1.5
ml/min
Detection: 210 nm (analogue output from DAD)
ELS (analogue output from ELS)
After the DAD the flow was divided yielding approx 1 ml/min to the
ELS and 0.5 ml/min to the MS. HPLC-MS (method fast grad): The
following instrumentation was used: Hewlett Packard series 1100
G1312A Bin Pump Hewlett Packard series 1100 Column compartment
Hewlett Packard series 1100 G1315A DAD diode array detector Hewlett
Packard series 1100 MSD Sedere 75 Evaporative Light Scattering
detector The instrument was controlled by HP Chemstation software.
The HPLC pump was connected to two eluent reservoirs containing: A:
0.05% TFA in water B: 0.05% TFA in acetonitrile
The analysis is performed at 40 C by injecting an appropriate
volume of the sample (preferably 1 .mu.l) onto the column which is
eluted with a gradient of acetonitrile.
The HPLC conditions, detector settings and mass spectrometer
settings used are giving in the following:
Column: Waters Xterra MS C-18 X 3 mm id 5 .mu.m
Gradient: 5%-95% acetonitrile linear during 3 min at 2.7 ml/min
Detection: 210 nm (analogue output from DAD)
ELS (analogue output from ELS)
After the DAD the flow was divided yielding approx 1 ml/min to the
ELS and 0.5 ml/min to the MS.
HPLC-MS (50-99)
The same instruments and procedure as in the fast grad method is
used. The only difference is that the gradient runs from 50-99%
acetonitrile.
HPLC (Neutral) Buffer A: 10 mMtris, 15 mM (NH.sub.4).sub.2SO.sub.4,
pH adjusted to 7.3 with 4N H.sub.2SO.sub.4, 20% v/v acetonitrile
Buffer B: 80% v/v acetonitrile Flow: 1.5 ml/min Gradient: 0-20 min
10-50% B Column: Phenomerex, Jupiter 4.6 mm.times.150 mm, C.sub.4,
5.mu., 300 .ANG. Column temperature: 40.degree. C. HPLC-MS
(Sciex)
The following instrumentation is used: Hewlett Packard series 1100
G1312A Bin Pump Hewlett Packard series 1100 G13 15A DAD diode array
detector Sciex3000 triplequadropole mass spectrometer Gilson 215
micro injector Sedex55 evaporative light scattering detector
Pumps and detectors are controlled by MassChrom 1.1.1 software
running on a Macintosh G3 computer. Gilson Unipoint Version 1.90
controls the auto-injector.
The HPLC pump is connected to two eluent reservoirs containing: A:
0.01% TFA in water B: 0.01% TFA in acetonitrile
The analysis is performed at room temperature by injecting an
appropriate volume of the sample (preferably 10 .mu.l) onto the
column, which is eluted, with a gradient of acetonitrile. The
eluate from the column passed through the UV detector to meet a
flow splitter, which passed approximately 30 .mu.l/min (1/50)
through to the API Turbo ion-spray interface of API 3000
spectrometer. The remaining 1.48 ml/min (49/50) is passed through
to the ELS detector.
The HPLC conditions, detector settings and mass spectrometer
settings used are giving in the following table.
TABLE-US-00001 Column Waters X-Terra C18, 5.mu., 50 mm .times. 3 mm
id Gradient 5%-90% acetonitrile linearly during 7.5 min at 1.5
ml/min Detection 210 nm (analogue output from DAD) MS ionisation
mode API Turbo ion-spray ELS Gain 8 and 40.degree. C.
Example 1
General Procedure A, Acylation Using desB30 Human Insulin
N.sup..epsilon.B29--[N--HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-CH.sub.-
2-para-C.sub.6H.sub.4CO] desB30 human insulin
Step 1: Synthesis of
4-[(2-tert-Butoxycarbonylethylamino)methyl]benzoic acid
##STR00004##
Tert-butyl 3-aminopropanoate hydrochloride (5 g, 27.7 mmol) was
dissolved in methanol (150 mL). Diisopropylethylamin (4.73 mL, 27.7
mmol) was added followed by 4-carboxybenzaldehyd. The mixture is
heated to reflux for 1 hour. After cooling to room temperature
sodium cyanoborohydride (1.77 g, 22.1 mmol) was added under
nitrogen and stirred for 1 hour at room temperature. Acetic acid
(15 mL) was added and the mixture was stirred for an additional 1
hour. The mixture was poured into water (300 mL) and stirred at
room temperature over night. The water solution was washed with
ethyl acetate (3.times.250 mL). The organic phase dried
(Na.sub.2SO.sub.4) and solvent removed in vacuo to yield the crude
product as an oil which solidifies by standing. The crude product
was used in the next step without further purification.
HPLC-MS: m/z=(280); R.sub.t=2.09 min.
Step 2: Synthesis of
4-{[(2-tert-Butoxycarbonylethyl)-(15-tert-butoxycarbonyl-pentadecanoyl)am-
ino]methyl}benzoic acid
##STR00005##
Hexadecanedioic acid mono-tert-butyl ester (0.3 g, 0.88 mmol) was
dissolved in ethyl acetate.
N-Ethyl-N-(3-dimethylaminopropyl)-carbodiimide hydrochloride (0.167
g, 0.88 mmol) and 1-hydroxy-7-azabenzotriazole (0.119 g, 0.88 mmol)
was added and the mixture was stirred at 50.degree. C. for 1 hour.
After cooling to room temperature, diisopropylethylamin (0.45 mL,
2.63 mmol) was added followed by
4-[(2-tert-Butoxycarbonylethylamino)methyl]benzoic acid (0.489 g,
1.75 mmol). The mixture was stirred overnight under nitrogen at
room temperature. The mixture was separated between ethyl acetate
(100 mL) and water (2.times.50 mL). The organic phase was dried
(Na.sub.2SO.sub.4), solvent removed in vacuo. The crude product was
purified by RP-HPLC on C18-column, buffer A: 0.1% TFA, buffer B:
MeCN+0.1% TFA; gradient 80-100% B to yield the title compound (145
mg, 27%).
.sup.1H NMR (Acetone-d.sub.6): .delta. 8.04 (dd, 2H), 7.40 (dd,
2H), 4.75 (d, 2H), 3.60 (q, 2H), 1.55 (m, 4H), 1.45-1.15 (m,
38H).
Step 3: Synthesis of
4-{[(2-tert-Butoxycarbonylethyl)-(15-tert-butoxycarbonyl-pentadecanoyl)am-
ino]methyl}benzoic acid 2,5-dioxopyrrolidin-1-yl ester
##STR00006##
4-{[(2-tert-Butoxycarbonylethyl)-(15-tert-butoxycarbonyl-pentadecanoyl)am-
ino]methyl}benzoic acid (70 mg, 0.12 mmol) was dissolved in THF (5
mL). The mixture was cooled with an ice bath. Diisopropylethylamin
(0.024 mL, 0.14 mmol) and
O--(N-succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate
(42 mg, 0.14 mmol) was added. The mixture was stirred under
nitrogen at 0.degree. C. After 30 minutes the ice cooling was
removed and the mixture was stirred for an additional 3 hours.
Solvent removed in vacuo flowed by reevaporation from toluene. The
crude product was dissolved in ethyl acetate (25 mL), washed with
water (10 mL). The organic phase dried (Na.sub.2SO.sub.4), solvent
removed in vacuo to yield the title compound (73 mg, 87%) which was
used in subsequent step.
HPLC-MS: m/z=(723 (M+Na)); R.sub.t=6.24 min.
Step 4: Synthesis of
B29N(esp)(4-{[(2-Carboxyethyl)-(15-carboxypentadecanoyl)amino]-methyl}ben-
zoyl) desB30 human insulin
##STR00007##
Human DesB30 insulin (594 mg, 0.104 mmol) was dissolved in aqueous
Na.sub.2CO.sub.3 (100 mM, 5 mL).
4-{[(2-tert-Butoxycarbonylethyl)-(15-tert-butoxycarbonyl-pentadecanoyl)am-
ino]methyl}benzoic acid 2,5-dioxopyrrolidin-1-yl ester (73 mg,
0.104 mmol) was dissolved in acetonitrile (3 mL) and added. The
mixture was stirred very slowly for 1 hour at RT. pH was adjusted
to 5.5 with aqueous HCl (1N) and the suspension was allowed to
stand for 10 minutes at 0.degree. C. The precipitate was isolated
by centrifugation and treated with TFA/water (95:5, 12 mL) for 30
minutes. Poured into ice cooled diethylether (30 mL), and the crude
product was isolated by centrifuge and purified with RP-HPLC on a
Waters Prep LC2000, on C18, 5 cm.times.20 cm, flow 20 ml/min using
acetonitrile/water 33-53% gradient containing 0.1% TFA. Fraktions
containing product was collected and lyophilized. To the
lyophilized material was added water (7.2 mL) and pH adjusted to
8.98 with 1 N+0.1 N NaOH. The pH was adjusted back to 5.2-5.5 with
0.1 N HCl. The product precipitated, isolated by centrifuge and
lyophilized to give the title compound.
Example 2
General Procedure B. Acylation Using A1,B1-diBoc desB30 Human
Insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.13CO)--N-(carboxyethyl)-CH.sub-
.2-para-C.sub.6H.sub.4CO] desB30 human insulin
Step 1: Synthesis of
4-{[(2-tert-Butoxycarbonylethyl)-(14-tert-butoxycarbonyl-tetradecanoyl)-a-
mino]-methyl}-benzoic acid 2,5-dioxo-pyrrolidin-1-yl ester
##STR00008##
The compound was prepared similar as described in step 2 and step 3
in general procedure A using pentadecanedioic acid mono-tert-butyl
ester instead.
HPLC-MS: m/z=(709 (M+Na)); R.sub.t=6.03 min.
Step 2: Synthesis N.sup..epsilon.B29
(4-{[(2-Carboxyethyl)-(14-carboxytetradecanoyl)amino]-methyl}benzoyl)
desB30 human Insulin
##STR00009##
A1B1BocBoc desB30 insulin (Kurtzhals P; Havelund S; Jonassen I;
Kiehr B; Larsen U D; Ribel U; Markussen J Biochemical Journal,
1995, 312, 725-731) (0.1 g, 0.017 mmol) was dissolved in DMSO (2
mL). Triethylamin (0.024 mL, 0.17 mmol) was added.
4-{[(2-tert-Butoxycarbonylethyl)-(14-tert-butoxycarbonyl-tetradecanoyl)-a-
mino]-methyl}-benzoic acid 2,5-dioxo-pyrrolidin-1-yl ester was
dissolved in THF (1 mL) and added. The mixture was shaken at RT for
1 hour. The solution was cooled with an ice bath, and water (5 mL)
was added. The pH was adjusted to 5.2 with 1N HCl. The mixture was
allowed to precipitate for 1 hour at 5.degree. C. The precipitate
was isolated by centrifuge and treated with TFA 10 mL for 15
minutes. Poured into ice cooled diethylether (35 mL), and the crude
product was isolated by centrifuge and purified on C-18 RP-HPLC 5
cm.times.20 cm, flow 20 ml/min using acetonitrile/water 25-45%
gradient containing 0.1% TFA. Fractions containing product were
collected, lyophilized. The lyophilized material was added water
(7.2 mL) and pH adjusted to 8.98 with 1 N+0, 1 N NaOH. The pH was
adjusted back to 5.2-5.5 with 0.1 N HCl. The product was
precipitated, isolated by centrifugation and lyophilized to give
the title compound.
HPLC-MS: m/z=1542 (m/4), 1234 (m/5); R.sub.t=3.55 min.
Example 3
General Procedure B
N.sup..epsilon.B29--N--(HOOC(CH.sub.2).sub.16CO)--N(carboxyethyl)-CH.sub.2-
-para-C.sub.6H.sub.4CO] desB30 human insulin
Step 1: Synthesis of
4-{[(2-tert-Butoxycarbonylethyl)-(17-tert-butoxycarbonylheptadecanoyl)ami-
no]methyl}benzoic acid 2,5-dioxo-pyrrolidin-1-yl ester
##STR00010##
The compound was prepared similar as described in step 2 and step 3
in general procedure A using octadecanedioic acid mono-tert-butyl
ester in stead.
HPLC-MS: m/z=(752 (M+Na)); R.sub.t=6.62 min
Step 2: Synthesis of
N.sup..epsilon.B29-(4-{[(2-Carboxyethyl)-(17-carboxyheptadecanoyl)-amino]-
methyl}benzoyl) desB30 human insulin
##STR00011##
Compound from step 1 was reacted with from A1,B1-diBoc desB30
insulin as described in general procedure B. The work up was
similar using a gradient 45-70% acetonitrile/water containing 0.1%
TFA. The pooled fractions containing product were lyophilized and
dissolved in 2.5% NH.sub.3 1 mL and diluted to 10 mL and subjected
to purification on an AKTA purifier employing a reversed phase
HPLC, Jupiter 5269, C4 250/20 mm, 15 .mu.M, 300 .ANG.. The buffer
consisted of A-buffer 10 mM TRIS+15 mM (NH.sub.4).sub.2SO.sub.4 in
20% EtOH, pH 7.3 and a B-buffer 80% EtOH. The product was eluted
with a gradient 15-60% B with 8 ml/min. The appropriate fraction
were pooled and eluted on a sep pak with 70% CH.sub.3CN containing
0.1% TFA. Precipitated and lyophilized to yield the desired
product.
Maldi: 6199.2
Example 4
General Procedure B
N.sup..epsilon.B29--N--(HOOC(CH.sub.2).sub.15CO)--N-(carboxyethyl)-CH.sub.-
2-para-C.sub.6H.sub.4CO] desB30 human insulin
Step 1: Synthesis of heptadecanedioic acid mono-tert-butyl
ester
##STR00012##
2-Methoxycarbonyl-heptadecanedioic acid 1-methyl ester
Sodium (1.11 g, 48.2 mmol) was dissolved in dry methanol (30 ml)
and heated to 50.degree. C. Dimethyl malonate (5.87 ml, 51.4 mmol)
was added over 15 min. The mixture was heated to reflux and a
suspension of 15-bromopentadecanoic acid (5 g, 15.6 mmol) in dry
methanol (50 ml) was added over 45 min. The resulting mixture was
refluxed for another 30 min. After cooling to RT, water was added
and the mixture was concentrated. Water was added to the residue an
made alkaline with 1 N NaOH and extracted with ether (1.times.50
ml). The aqueous layer was acidified with 1N HCl and extracted with
ether (3.times.30 ml). The combined organic layers was dried
(Na.sub.2SO.sub.4) and concentrated to give the title compound in
98% (5.7 g) yield.
HPLC-MS: 395 (M+Na), rt 5.38. .sup.1H-NMR (CDCl.sub.3): .delta.
1.2-1.35 (m, 22H), 1.65 (pent, 2H), 1.90 (m, 2H), 2.34 (t, 2H),
3.37 (t, 1H), 3.71 ppm (s, 6H).
Heptadecanedioic Acid:
2-Methoxycarbonyl-heptadecanedioic acid 1-methyl ester (4.63, 12.4
mmol g) was dissolved in 20% aqueous KOH (15 ml) by heating. The
resulting solution was refluxed for 2.5 h. The cold reaction
mixture was carefully concentrated. The residue was suspended in
water (30 ml) on an ice bath and acidified with 10% aqueous HCI.
The resulting slurry was refluxed for 2 h. After cooling the
precipitate was isolated by filtration and dried over night in
vacuo. The compound was decarboxylated by heating under stirring at
140.degree. C. for 2 h. (the reaction should be followed, heating
to 180.degree. might be necessary). The crude product (4.0 g, 100%)
was used without further purification. HPLC-MS: 323 (M+Na),
R.sub.14.61. .sup.1H-NMR (DMSO-d.sub.6): .delta. 1.22 (br s, 22H)
1.47 (m, 4H), 2.18 (t, 4H).
Heptadecanedioic Acid Mono-Tert-Butyl Ester
The crude heptadecanedioic acid (0.99 g, 3.3 mmol) was dissolved in
toluene (15 ml) at 115.degree. C. N,N-dimethylformamide
di-tert-butylacetale (0.79 ml, 3.3 mmol) was added dropwise over 10
min. After refluxing for 1 h more N,N-dimethylformamide
di-tert-butylacetale (0.79 ml) was added over 10 min. After
refluxing for another 1 h, a last eq of N,N-dimethylformamide
di-tert-butylacetale (0.79 ml) was added over 10 min. Reflux was
continued for 1 h. On cooling to RT a precipitate appeared, this
was filtered off (diacid). The mother liqueour was extracted with
water (25 ml) and DCM (25 ml). The organic layer was dried and
concentrated. The residue was purified by flash chromatography
using DCM/MeOH 15:1 as eluent. Heptadecanedioic acid
mono-tert-butyl ester was isolated in 33% yield (0.330 g). HPLC-MS:
379 (M+Na), rt 6.11. .sup.1H-NMR (DMSO-d.sub.6): .delta. 1.22 (br
s, 22H), 1.39 (s, 9H), 1.47 (m, 4H), 2.16 (t, 2H), 2.19 ppm (t,
2H).
##STR00013##
Step 2: Synthesis of
4-{[(2-tert-Butoxycarbonylethyl)-(16-tert-butoxycarbonylhexadecanoyl)amin-
o]methyl}benzoic acid 2,5-dioxopyrrolidin-1-yl ester
The compound was prepared similar as described in step 2 and step 3
in general procedure A using heptadecanedioic acid mono-tert-butyl
ester in stead.
Step 3: Synthesis of
N.sup..epsilon.B29-(4-{[(2-Carboxyethyl)-(16-carboxyhexadecanoyl)amino]-m-
ethyl}benzoyl) desB30 human insulin
##STR00014##
4-{[(2-tert-Butoxycarbonylethyl)-(16-tert-butoxycarbonylhexadecanoyl)-ami-
no]methyl}benzoic acid 2,5-dioxopyrrolidin-1-yl ester was reacted
with A1,B1-diBoc desB30 insulin as described in general procedure
B. The work up was similar using a gradient 28-48%
acetonitrile/water containing 0.1% TFA.
HPLC-MS: m/z=1549 (m/4), 1239 (m/5); R.sub.t=3.53 min.
Example 5
General Procedure B
N.sup..epsilon.B29-[(5-{[(2-Carboxyethyl)-(15-carboxypentadecanoyl)amino]m-
ethyl}furan-2-carbonyl)desB30 human insulin
Step 1:
5-[(2-tert-Butoxycarbonylethylamino)methyl]furan-2-carboxylic
acid
##STR00015##
This compound was synthesized using a similar procedure as
described in step 1 in general procedure A using
5-formylfuran-2-carboxylic acid instead of 4-carboxybenzaldehyd
.sup.1H NMR (CDCl.sub.3): .delta. 7.12 (d, 1H), 6.65 (d, 1H), 4.37
(s, 2H), 3.35 (t, 2H), 2.80 (t, 2H), 1.45 (s, 9H).
Step 2:
5-{[(2-tert-Butoxycarbonylethyl)-(15-tert-butoxycarbonylpentadecan-
oyl)amino]-methyl}furan-2-carboxylic acid
##STR00016##
This compound was synthesized using a similar procedure as
described in step 1 in general procedure A using
5-[(2-tert-Butoxycarbonylethylamino)methyl]furan-2-carboxylic acid
instead of 4-[(2-tert-Butoxycarbonylethylamino)methyl]benzoic
acid.
.sup.1H NMR (DMSO-d.sub.6): .delta. 7.15 (dd, 1H), 6.45 (dd, 1H),
4.57 (d, 2H), 2.43-2.10 (m, 6H), 1.60-1.20 (m, 42H).
HPLC-MS: m/z=(616 (M+Na), 538 (lose of tert-butyl, 482 (lose of two
tert-butyl), R.sub.t=6.17 min.
Step 3:
5-{[(2-tert-Butoxycarbonylethyl)-(15-tert-butoxycarbonylpentadecan-
oyl)-amino]methyl}-furan-2-carboxylic acid
2,5-dioxo-pyrrolidin-1-yl ester
##STR00017##
This compound was synthesized using a similar procedure as
described in step 3 in general procedure A
HPLC-MS: m/z=(713 (M+Na), R.sub.t=6.4 min.
Step 4
N.sup..epsilon.B29-[(5-{[(2-Carboxyethyl)-(15-carboxypentadecanoyl)-
amino]methyl}furan-2-carbonyl) desB30 human insulin
##STR00018##
5-{[(2-tert-Butoxycarbonylethyl)-(15-tert-butoxycarbonylpentadecanoyl)ami-
no]methyl}furan-2-carboxylic acid 2,5-dioxo-pyrrolidin-1-yl ester
was reacted with A1,B1-diBoc desB30 insulin as described in general
procedure B. The work up was similar using a gradient 25-45%
acetonitrile/water containing 0.1% TFA. The pooled fractions
containing product was lyophilized and dissolved in 2.5% NH.sub.3 1
mL and diluted to 38 mL and subjected to purification on an AKTA
purifier employing a reversed phase HPLC, Jupiter 5269, C4 250/20
mm, 15 .mu.M, 300 .ANG.. The buffer consisted of A-buffer 10 mM
TRIS+15 mM (NH.sub.4).sub.2SO.sub.4 in 20% EtOH, pH7.3 and a
B-buffer 80% EtOH. The product was eluted with a gradient 15-60% B
with 8 ml/min. The appropriate fractions were pooled and eluted on
a sep pak with 3 mL 70% CH.sub.3CN containing 0.1% TFA.
Precipitated and lyophilized to yield the desired product.
MS. m/z=6169.
Example 6
General Procedure B
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO--N-(carboxethyl)-CH.sub.2-
-meta C.sub.6H.sub.4CO] desB30 human insulin
Step 1: 3-[(2-tert-Butoxycarbonylethylamino)methyl]benzoic acid
##STR00019##
This compound was synthesized using a similar procedure as
described in step 1 in general procedure A using
3-carboxybenzaldehyde instead of 4-carboxybenzaldehyde
HPLC-MS (Method fast grad): m/z=(302, M+Na); R.sub.t=1.1 min.
Step 2:
3-{[(2-tert-Butoxycarbonylethyl)-(15-tert-butoxycarbonylpentadecan-
oyl)amino]methyl}benzoic acid
##STR00020##
This compound was synthesized using a similar procedure as
described in step 1 in general procedure A using
3-[(2-tert-Butoxycarbonylethylamino)methyl]benzoic acid instead of
4-[(2-tert-Butoxycarbonylethylamino)methyl]benzoic acid.
HPLC-MS (Method fast grad): m/z=(603, M+1); R.sub.t=3.09 min.
Step 3:
2-{[(2-tert-Butoxycarbonyl-ethyl)-(15-tert-butoxycarbonyl-pentadec-
anoyl)-amino]-methyl}-benzoic acid 2,5-dioxo-pyrrolidin-1-yl
ester
##STR00021##
This compound was synthesized using a similar procedure as
described in step 3 in general procedure A
HPLC-MS (Method fast grad): m/z=723, (M+Na); R.sub.t=3.15 min.
Step 4: Synthesis of
N.sup..epsilon.B29-(3-{[(2-Carboxyethyl)-(15-carboxypentadecanoyl)amino]--
methyl}benzoyl) desB30 human insulin
##STR00022##
3-{[(2-tert-Butoxycarbonyl-ethyl)-(15-tert-butoxycarbonyl-pentadecanoyl)--
amino]-methyl}-benzoic acid 2,5-dioxo-pyrrolidin-1-yl ester was
reacted with A1B1BocBoc desB30 insulin as described in general
procedure B. The work up was similar using a gradient 25-45%
acetonitrile/water containing 0.1% TFA. The pooled fractions
containing product were precipitated and lyophilized.
HPLC-MS: m/z=1236 (m/5), 1030 (m/6); R.sub.t=3.7 min.
Example 7
General Procedure B
N.sup..epsilon.B29--[N--HOOC(CH.sub.2).sub.14CO)--N-(carboxethyl)-CH.sub.2-
-ortho C.sub.6H.sub.4CO] desB30 human insulin
Step 1: 2-[(2-tert-Butoxycarbonylethylamino)methyl]benzoic acid
##STR00023##
This compound was synthesized using a similar procedure as
described in step 1 in general procedure A using
2-carboxybenzaldehyd instead of 4-carboxybenzaldehyd
HPLC-MS (Method fast grad): m/z=280, (M+1); R.sub.t=1.13 min.
##STR00024##
Step 2:
3-{[(2-tert-Butoxycarbonylethyl)-(15-tert-butoxycarbonylpentadecan-
oyl)amino]methyl}benzoic acid
This compound was synthesized using a similar procedure as
described in step 1 in general procedure A using
2-[(2-tert-Butoxycarbonylethylamino)methyl]benzoic acid instead of
4-[(2-tert-Butoxycarbonylethylamino)methyl]benzoic acid.
HPLC-MS (Method fast grad): m/z=604; R.sub.t=3.09 min.
Step 3:
3-{[(2-tert-Butoxycarbonyl-ethyl)-(15-tert-butoxycarbonyl-pentadec-
anoyl)-amino]-methyl}-benzoic acid 2,5-dioxo-pyrrolidin-1-yl
ester
##STR00025##
This compound was synthesized using a similar procedure as
described in step 3 in general procedure A
HPLC-MS (Method fast grad): m/z=(723, M+Na); R.sub.t=3.15 min.
Step 4: Synthesis of N.sup..epsilon.B29
(3-{[(2-Carboxyethyl)-(15-carboxypentadecanoyl)amino]-methyl}benzoyl)
desB30 human insulin
##STR00026##
2-{[(2-tert-Butoxycarbonyl-ethyl)-(15-tert-butoxycarbonyl-pentadecanoyl)--
amino]-methyl}-benzoic acid 2,5-dioxo-pyrrolidin-1-yl ester was
reacted with A1,B1-diBoc des (B30) insulin as described in general
procedure B. The work up was similar using a gradient 28-48%
acetonitrile/water containing 0.1% TFA. The pooled fractions
containing product was precipitated and lyophilized The pooled
fractions containing product was lyophilized and dissolved in 2.5%
NH.sub.3 1 mL and diluted to 38 mL and subjected to purification on
an AKTA purifier employing a reversed phase HPLC, Jupiter 5269, C4
250/20 mm, 15 .mu.M, 300 .ANG.. The buffer consisted of A-buffer 10
mM TRIS+15 mM (NH.sub.4).sub.2SO.sub.4 in 10% Acetonitrile, pH7.3
and a B-buffer 70% Acetnotrile. The product was eluted with a
gradient 27-33% B with 6 ml/min over 90 minutes The appropriate
fractions were pooled and eluted on a sep pack with 3 mL 70%
CH.sub.3CN containing 0.1% TFA, precipitated and lyophilized to
yield the desired product.
Example 8
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-para-C-
.sub.6H.sub.4CO] desB30 human insulin
Step 1: 4-(15-tert-Butoxycarbonylpentadecanoylamino)benzoic acid
methyl ester
##STR00027##
Hexadecanedioic acid mono-tert-butyl ester (0.4 g, 1.17 mmol) was
dissolved in NMP (6 mL).
N-Ethyl-N-(3-dimethylaminopropyl)-carbodiimide hydrochloride (0.223
g, 0.1.17 mmol) and 1-hydroxy-7-azabenzotriazole (0.159 g, 1.17
mmol) was added and the mixture was stirred at 50.degree. C. for 1
hour and then allowed to cool to room temperature.
Diisopropylethylamin (0.6 mL, 3.5 mmol) was added followed by
methyl 4-aminobenzoate (0.353 g, 2.34 mmol). The mixture was
stirred overnight under nitrogen at room temperature. The mixture
was poured into saturated aqueous NaCl (50 mL), washed with
diethylether (3.times.100 mL between ethyl acetate. The organic
phases were collected, dried (Na.sub.2SO.sub.4) and solvent removed
in vacuo. The crude material was purified on silica using ethyl
acetate/heptane (50:50), to give pure
4-(15-tert-Butoxycarbonylpentadecanoylamino) benzoic acid methyl
ester (235 mg, 42%)
.sup.1H-NMR (CDCl.sub.3) .delta. 8.00 (d, 2H), 7.61 (d, 2H), 7.32
(br s, 1H), 3.90 (s, 3H), 2.37 (t, 2H), 2.20 (t, 2H), 1.70 (m, 2H),
1.43 (s, 9H), 1.40-1.20 (m, 20H)
Step 2:
4-[tert-Butoxycarbonylmethyl-(15-tert-butoxycarbonylpentadecanoyl)-
amino]benzoic acid
##STR00028##
4-(15-tert-Butoxycarbonylpentadecanoylamino)benzoic acid methyl
ester (235 mg, 0.495 mmol) was evaporated twice from dry pyridine
and once from dry acetonitrile, dissolved in dry DMF (4 mL) under
nitrogen. 60% NaH (14 mg, 0.594 mmol) was added and the mixture was
stirred for 20 minutes at room temperature under nitrogen.
tert-Butyl bromoacetate (0.11 mL, 0.742 mmol) was added and the
mixture was stirred for 1 hour, the reaction was quenched with ice
and separated between water (50 mL) and diethylether (75 mL). The
organic phase was dried (Na.sub.2SO.sub.4) and solvent remove in
vacuo. The crude material was dissolved in ethanol (4 mL). NaOH (5
N, 0.15 mL) was added and the mixture was stirred for 1 hour. pH
was adjusted to pH=5 with acetic acid and the mixture was separated
between water and ethyl acetate. The organic phase was dried
(Na.sub.2SO.sub.4) and solvent removed in vacuo to give the crude
product which was purified on RP-HPLC, C-18 with acetonitrile/water
gradient (75-95%) containing 0.1% TFA. To give pure
4-[tert-Butoxycarbonylmethyl-(15-tert-butoxycarbonylpentadecanoyl)amino]b-
enzoic acid) (53 mg, 19%)
HPLC-MS (fast grad): m/z=598 (M+Na), Rt=3.02 min.
Step 3:
4-[tert-Butoxycarbonylmethyl(15-tert-butoxycarbonylpentadecanoyl)a-
mino]benzoic acid 2,5-dioxopyrrolidin-1-yl ester
##STR00029##
This compound was synthesized from
4-[tert-Butoxycarbonylmethyl-(15-tert-butoxycarbonylpentadecanoyl)amino]b-
enzoic acid) using a similar procedure as described in step 3 in
general procedure A.
.sup.1H H-NMR (CDCl.sub.3) .delta. 8.19 (d, 2H), 7.49 (d, 2H), 4.27
(s, 2H), 2.94 (s, 4H), 2.17 (m, 4H), 1.57 (m, 4H), 1.46 (s, 9H),
1.44 (s, 9H), 1.30-1.15 (m, 20H).
Step 4
##STR00030##
4-[tert-Butoxycarbonylmethyl(15-tert-butoxycarbonylpentadecanoyl)amino]be-
nzoic acid 2,5-dioxopyrrolidin-1-yl ester was reacted with
A1,B1-diBoc desB30 insulin as described in general procedure B.
HPLC-MS: m/z=1539 (m/4).
Example 9
N.sup..epsilon.B29-(3-Carboxy-5-hexadecandioylaminobenzoyl)
des(B30)insulin
##STR00031##
5-Nitro-isophthalic acid mono t-Butyl ester
To a suspension of 5-nitro-isophthalic acid (5.0 g, 23.7 mmol) in
dry toluene (100 ml) at 110.degree. C. was added dimethylformamid
di-t-butylacetale (3.4 ml, 71 mmol) drop wise over 60 min. Heating
was continued for 45 min and the reaction mixture was left at Rt
over night. The precipitated starting material was removed by
filtration. The filtrate was concentrated to give a yellow oil
(7.88 g). This was purified by flash chromatography using
EtOAc/Hept 1:2 and EtOAc/Hept 1:2+5% AcOH in two portions to give
the title compound in 38% yield (2.38 g)
.sup.1H-NMR (CDCl.sub.3): .delta. 1.65 (s, 9H), 8.98 (s, 1H), 9.01
(s, 1H), 9.06 ppm (s, 1H).
5-Amino-isophthalic acid mono t-Butyl ester
5-Nitro-isophthalic acid mono t-Butyl ester (2.38 g, 8.9 mmol) was
dissolved in EtOAc (50 ml). 10% Palladium on activated charcoal was
added and the mixture was hydrogenated at 1 atm and room
temperature. After 24 h, the mixture was filtered through a glas
microfiber filter and the filtrate was concentrated to give the
title compound as white crystals in 98% yield (2.07 g).
.sup.1H-NMR (DMSO, d6): .delta. 1.54 (s, 9H), 5.59 (br, 2H,
NH.sub.2); 7.33 (s, 1H), 7.37 (s, 1H), 7.60 ppm (s, 1H).
5-(15-tert-Butoxycarbonyl-pentadecanoylamino)-isophthalic acid
mono-tert-butyl ester
To a solution of hexadecandioic acid mono t-butyl ester (100 mg,
0.29 mmol) in dry DCM (2 ml), HOAt (44 mg, 0.29 mmol) and DCC (72
mg, 32 mmol) was added. The mixture was stirred at 50.degree. C.
for 1 h. The oil bath was removed. 5-Amino-isophthalic acid mono
t-butyl ester (69 mg, 0.29) and DIPEA (0.07 ml, 0.32 mmol) was
added. The mixture was stirred at RT over night under nitrogen. The
yellow suspension was filtered and the filtrate was concentrated.
The residue was redissolved in EtOAc and extracted with 0.1N HCl
(2.times.), brine (1.times.), dried (Na.sub.2SO.sub.4) and
concentrated to give a white solid, which was purified twice by
flash chromatography using EtOAc/Hept 1:2+5% AcOH. The title
compound was obtained in 86% yield (0.140 g) as an oil containing
an impurity.
1H NMR (400 MHz) .delta. :1.25 (s, 22H) 1.42-1.45 (m, 9H) 1.53-1.65
(m, 11H) 1.68-1.79 (m, 2H) 2.20 (s, 2H) 2.41 (s, 2H) 7.58 (brs, 1H)
8.35 (s, 1H) 8.39 (s, 2H)
5-(15-tert-Butoxycarbonyl-pentadecanoylamino)-isophthalic acid
1-tert-butyl ester 3-(2,5-dioxo-pyrrolidin-1-yl) ester
5-(15-tert-Butoxycarbonyl-pentadecanoylamino)-isophthalic acid
mono-tert-butyl ester (140 mg, 0.25 mmol) was dissolved in dry THF
(3.5 ml). TSTU (95 mg, 0.30 mmol) and DIPEA (70 ul, 0.30 mmol) were
added. The mixture was stirred at RT under nitrogen over the
week-end. The reaction mixture was almost dry. EtOAc was added and
the precipitate was removed by filtration. The filtrate was
extracted with 0.1 N HCl (2.times.), brine (1.times.), dried
(Na.sub.2SO.sub.4) and concentrated to give the title compound as a
syrup containing a trace of an impurity in a quantitative yield
(0.165 mg).
1H NMR (400 MHz) .delta.: ppm 1.20-1.35 (m, 22H) 1.44 (s, 9H)
1.52-1.64 (m, 11H) 1.68-1.79 (m, 2H) 2.12-2.24 (m, 2H) 2.34-2.42
(m, 2H) 2.91 (s, 4H) 7.39 (s, 1H, NH) 8.34 (s, 1H) 8.43 (s, 1H)
8.54 (s, 1H)
N.sup..epsilon.B29-(3-Carboxy-5-hexadecandioylamino-benzoyl) desB30
human insulin
A1N, B1N-diBoc desB30 human insulin (100 mg, 0.017 mmol) was
acylated with
5-(15-tert-Butoxycarbonyl-pentadecanoylamino)-isophthalic acid
1-tert-butyl ester 3-(2,5-dioxo-pyrrolidin-1-yl) ester (15 mg,
0.022 mmol) as described in general procedure B. The product was
purified by preparative HPLC and hydrolysed as described in general
procedure B to give the title compound, 9 mg.
MALDI-MS (SA): 6130.8. anal. HPLC (neut, Alrg), 96.5% purity, rt
6.11 min. (Column: C4 5.mu. 150.times.4.60 mm "phenomenex, Jupiter"
Buffer A: 10 mM Tris, 15 mM (NH.sub.4).sub.2SO.sub.4, pH 7.3, 20%
CH.sub.3CN in MQ water. Buffer B: 80% CH.sub.3CN, 20% MQ-water,
Flow: 1,5 ml/min; Gradient: 0 min 10% B.fwdarw.20 min 50%
B.fwdarw.21 min 50% B.fwdarw.23 min 10% B.fwdarw.30 min 10% B)
anal. HPLC (acidic), 100% purity, rt 12.24 min (Column: C4 5.mu.
150.times.4.60 mm "phenomenex, Jupiter" Buffer A: 0.1% TFA, 10%
CH.sub.3CN, 89.9% MQ-water Buffer B: 0.1% TFA, 80% CH.sub.3CN,
19.9% MQ-water, Flow: 1.5 ml/min; Gradient: 0 min 20% B.fwdarw.17
min 90% B.fwdarw.21 min 90% B.fwdarw.23 min 20% B.fwdarw.30 min 20%
B.
Example 10
N.sup..epsilon.B29-(3-Carboxy-5-octadecandioylaminobenzoyl)
des(B30) human insulin
##STR00032##
The title compound was prepared as described in example 9 using
octadecanedioc acid monotertbutyl ester in stead of hexadecandioic
acid. MALDI-MS (SA): 6160.9. anal. HPLC (neut), 96.0% purity, rt
8.93 min. (Column: C4 5.mu. 150.times.4.60 mm "phenomenex, Jupiter"
Buffer A: 10 mM Tris, 15 mM (NH.sub.4).sub.2SO.sub.4, pH 7.3, 20%
CH.sub.3CN in MQ water. Buffer B: 80% CH.sub.3CN, 20% MQ-water,
Flow: 1.5 ml/min; Gradient: 0 min 10% B.fwdarw.20 min 50%
B.fwdarw.21 min 50% B.fwdarw.23 min 10% B.fwdarw.30 min 10% B).
anal. HPLC (acidic), 100% purity, rt 13.62 min (Column: C4 5.mu.
150.times.4.60 mm "phenomenex, Jupiter" Buffer A: 0.1% TFA, 10%
CH.sub.3CN, 89.9% MQ-water Buffer B: 0.1% TFA, 80% CH.sub.3CN,
19.9% MQ-water, Flow: 1.5 ml/min; Gradient: 0 min 20% B.fwdarw.17
min 90% B.fwdarw.21 min 90% B.fwdarw.23 min 20% B.fwdarw.30 min 20%
B).
Example 11
Synthesis of
N.sup..epsilon.B29-.omega.-carboxypentadecanoyl-.gamma.-L-glutamyl
4-aminomethyl-benzoyl) desB30 human insulin
##STR00033##
Mono-tert-butyl hexadecandioate
Hexadecadioic acid (40.0 g, 140 mmol) was suspended in toluene (250
ml) and the mixture was heated to reflux. N,N-dimethylformamide
di-tert-butyl acetal (76.3 g, 375 mmol) was added drop-wise over 4
hours. The mixture was refluxed overnight. The solvent was removed
in vacuo at 50.degree. C., and the crude material was suspended in
DCM/AcOEt (500 ml, 1:1) and stirred for 15 min. The solids were
collected by filtration and triturated with DCM (200 ml). The
filtrate was evaporated in vacuo to give crude mono-tert-butyl
hexadecandioate, 30 grams. This material was suspended in DCM (50
ml), cooled with ice for 10 mins, and filtered. The solvent was
removed in vacuo to leave 25 gram crude mono-tert-butyl
hexadecandioate, which was recrystallized from heptane (200 ml) to
give mono-tert-butyl hexadecandioate, 15.9 g (33%). Alternatively
to recrystallization, the mono-ester can be purified by silica
chromatography in AcOEt/heptane.
.sup.1H-NMR (CDCl.sub.3) .delta.: 2.35 (t, 2H), 2.20 (t, 2H),
1.65-1.55 (m, 4H), 1.44 (s, 9H), 1.34-1.20 (m, 20H).
Succinimidyl tert-butyl hexadecandioate
The mono tert-butyl ester (2 g, 5.8 mmol) was dissolved in THF (20
ml) and treated with TSTU (2.1 g, 7.0 mmol) and DIEA (1.2 ml, 7.0
mmol) and stirred overnight. The mixture was filtered, and the
filtrate was evaporated in vacuo. The residue was dissolved in
AcOEt and washed twice with cold 0.1 M HCl and water. Drying over
MgSO.sub.4 and evaporation in vacuo gave succinimidyl tert-butyl
hexadecandioate, 2.02 g (79%).
.sup.1H-NMR (CDCl.sub.3) .delta.: 2.84 (s, 4H), 2.60 (t, 2H), 2.20
(t, 2H), 1.74 (p, 2H), 1.56 (m, 2H), 1.44 (s, 9H), 1.40 (m, 2H),
1.30-1.20 (m, 18H).
Tert-butyl hexadecandioyl-L-Glu-OtBu
Succinimidyl tert-butyl hexadecandioate (1 g, 2.27 mmol) was
dissolved DMF (15 ml) and treated with L-Glu-OtBu (0.51 g, 2.5
mmol) and DIEA (0.58 ml, 3.41 mmol) and the mixture was stirred
overnight. The solvent was evaporated in vacuo, and the crude
product was dissolved in AcOEt, and washed twice with 0.2M HCI,
with water and brine. Drying over MgSO.sub.4 and evaporation in
vacuo gave tert-butyl hexadecandioyl-L-Glu-OtBu, 1.2 g (100%).
.sup.1H-NMR (CDCl.sub.3) .delta.: 6.25 (d, 1H), 4.53 (m, 1H), 2.42
(m, 2H), 2.21 (m, 4H), 1.92 (m, 1H), 1.58 (m, 4H), 1.47 (s, 9H),
1.43 (s, 9H), 1.43-1.22 (m, 18H).
Tert-butyl hexadecandioyl-L-Glu(OSu)-OtBu
Tert-butyl hexadecandioyl-L-Glu-OtBu (1.2 g, 2.27 mmol) was
dissolved in THF (15 ml) and treated with TSTU (0.82 g, 2.72 mmol)
and DIEA (0.47 ml, 2.72 mmol) and stirred overnight. The mixture
was filtered, and the filtrate was evaporated in vacuo. The residue
was dissolved in AcOEt and washed twice with cold 0.1 M HCl and
water. Drying over MgSO.sub.4 and evaporation in vacuo gave
tert-butyl hexadecandioyl-L-Glu(OSu)-OtBu, 1.30 g (92%).
.sup.1H-NMR (CDCl.sub.3) .delta.: 6.17 (d, 1H), 4.60 (m, 1H), 2.84
(s, 4H), 2.72 (m, 1H), 2.64 (m, 1H), 2.32 (m, 1H), 2.20 (m, 4H),
2.08 (m, 1H), 1.6 (m, 4H), 1.47 (s, 9H), 1.43 (s, 9H), 1.33-1.21
(m, 20H).
Tert-butyl hexadecandioyl-L-Glu(NHCH.sub.2PhCOOH)-OtBu
Tert-butyl hexadecandioyl-L-Glu(OSu)-OtBu (100 mg, 0.16 mmol) i DMF
(1 ml) was treated with 4-aminomethylbenzoic acid (27 mg, 0.18
mmol) and DIEA (41 .mu.L, 0.24 mmol) and the mixture was stirred
overnight. The solvent was evaporated and the residue was dissolved
in AcOEt. The organic phase was washed with 2.times.0.2M HCl, water
and brine.
Drying over MgSO.sub.4 and evaporation in vacuo gave tert-butyl
hexadecandioyl-L-Glu(NHCH.sub.2PhCOOH)-OtBu, 92 mg (87%).
.sup.1H-NMR (CDCl.sub.3) .delta.: 7.85 (d, 2H, J=8 Hz), 7.30 (d,
2H, J=8 Hz), 7.16 (t, 1H), 7.43 (d, 1H), 4.50, (m, 3H), 2.39 (t,
2H), 2.29 (m, 1H), 2.25 (t, 2H), 2.18 (t, 2H), 1.89 (m, 1H), 1.59
(m, 6H), 1.47 (s, 9H), 1.43 (s, 9H), 1.25 (m, 20H).
Tert-butyl hexadecandioyl-L-Glu (NHCH.sub.2PhCOOSu)-OtBu
tert-butyl hexadecandioyl-L-Glu(NHCH.sub.2PhCOOH)-OtBu (92 mg, 0.14
mmol) was dissolved in THF (1 ml) and treated with TSTU (50 mg,
0.17 mmol) and DIEA (29 .mu.l, 0.177 mmol) and stirred overnight.
The mixture was filtered, and the filtrate was evaporated in vacuo.
The residue was dissolved in AcOEt and washed twice with cold 0.1 M
HCl and water. Drying over MgSO.sub.4 and evaporation in vacuo gave
tert-butyl hexadecandioyl-L-Glu(NHCH.sub.2PhCOOSu)-OtBu, 95 mg
(90%).
.sup.1H-NMR (CDCl.sub.3) .delta.: 8.07 (d, 2H, J=8 Hz), 7.45 (d,
2H, J=8 Hz), 7.37 (t, 1H), 6.38 (d, 1H), 4.53, (m, 2H), 4.40 (m,
1H), 2.89 (s, 4H), 2.32 (t, 2H), 2.20 (m, 6H), 1.86 (m, 2H), 1.59
(m, 6H), 1.46 (s, 9H), 1.44 (s, 9H), 1.25 (m, 20H).
N.sup..epsilon.B29-.omega.-carboxypentadecanoyl-.gamma.-L-glutannyl
4-aminomethyl-benzoyl) desB30 human insulin
Des(B30) human insulin (500 mg, 0.090 mmol) was dissolved in 100 mM
Na.sub.2CO.sub.3 (6.5 ml, pH 10.2) at room temperature. Tert-butyl
hexadecandioyl-L-Glu (NHCH.sub.2PhCOOSu)-OtBu (80 mg, 105 mmol) was
dissolved in acetonitrile (6.5 ml) and added to the insulin
solution. After 30 mins, 0 2 M methylamine (0.5 ml) was added. pH
was adjusted by HCl to 5.5 by use of 1 M HCl, and the isoelectric
precipitate was collected by centrifugation and dried in vacuo. The
coupling yield was 84% (RP-HPLC, C4 column; Buffer A: 10% MeCN in
0.1% TFA-water, Buffer B: 80% MeCN in 0.1% TFA-water; gradient 20%
to 90% B in 16 minutes). The protected product was dissolved in 95%
TFA (15 ml), left 30 mins and evaporated in vacuo. The crude
product was dissolved in water and lyophilized.
N.sup..epsilon.B29-hexadecandioyl-gamma-Glu-(4-aminomethyl-benzoyl)
desB30 insulin was purified by RP-HPLC on C4-column, buffer A: 20%
EtOH+0.1% TFA, buffer B: 80% EtOH+0.1% TFA; gradient 15-60% B,
followed by HPLC on C4-column, buffer A: 10 mM Tris+15 mM ammonium
sulphate in 20% EtOH, pH 7.3, buffer B: 80% EtOH, gradient 15-60%
B. The collected fractions were desalted on Sep-Pak with 70%
acetonitrile+0.1% TFA, neutralized by addition of ammonia and
freeze-dried. The unoptimized yield was 11 mg (2%). The purity as
evaluated by HPLC was >98%. LCMS 6236,
C.sub.282H.sub.418N.sub.66O.sub.82S.sub.6 requires 6237.
Example 12
N.sup..epsilon.B29-(3-Carboxy-4-(14-carboxytetradecyloxy)benzoyl)
desB30 human insulin
Step 1: 4-Hydroxy isophthalic acid dimethyl ester
##STR00034##
4-Hydroxy isophthalic acid (5 g, 27.5 mmol) was dissolved in 100 ml
methanol, cooled to 0.degree. C. under a flow of N.sub.2, and
thionyl chloride was added over ca. 5 min. The reaction was stirred
at 0.degree. C. for 30 min and then at room temperature for 1 h.
The reaction was refluxed for 16 h. The solvent was removed under
vacuum and the white solid was dissolved in AcOEt (100 ml). The
solution was washed with water (2.times.50 ml), dried over
MgSO.sub.4 and concentrated under vacuum to yield a white
crystalline solid (5.28 g, 92%).
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta.: 11.20 (s, 1H), 8.57 (s,
1H), 8.12 (d, 1H), 7.02 (d, 1H), 3.99 (s, 3H), 3.91 (s, 3H)
Step 2: 4-Hydroxyisophthalic acid 1-methyl ester
##STR00035##
The compound was prepared in the manner described by Coutts, Ian G.
C.; Edwards, Mark; Richards, David J. Synthesis 1981, 487.
4-Hydroxy isophthalic acid dimethyl ester (5.28 g, 25.1 mmol) was
refluxed in pyridine under a flow of N.sub.2. The reaction was
monitored via TLC (20:10:1, heptane/AcOEt/AcOH) which indicated
reaction completion after 8 h. The majority of the pyridine was
removed under vacuum, and AcOEt (100 ml) was added. The solution
was washed with 0.5 M HCl (3.times.50 ml). The acidic washes were
then extracted with AcOEt (100 ml). The two organic phases were
pooled, dried (MgSO.sub.4) and concentrated to yield a white solid
(4.85 g, 99%). The solid was recrystallized from toluene (200 ml)
to yield white crystals (4.6 g, 92%).
.sup.1H-NMR (DMSO, 400 MHz) .delta.: 8.39 (s, 1H), 8.05 (d, 1H),
7.07 (d, 1H), 3.84 (s, 3H).
.sup.13C-NMR (DMSO, 400 MHz) .delta. 171.38, 165.59, 165.00,
136.26, 132.47, 120.91, 118.11, 113.72, 52.40.
Step 3: 4-Hydroxy isophthalic acid 3-tert-butyl ester 1-methyl
ester
##STR00036##
4-Hydroxyisophthalic acid 1-methyl ester (2 g, 10.2 mmol) was
heated to 80.degree. C. in toluene (50 ml) under a flow of N.sub.2,
and N,N-dimethylformamide di-tert-butyl acetal (4.88 ml, 20.4 mmol)
was added over 30 sec. The reaction was stirred at 80.degree. C.,
and monitored via TLC (20:10:1 (Heptane/AcOEt/AcOH). After 1 h more
N,N-dimethylformamide di-tert-butyl acetal (4.88 ml, 20.4 mmol) was
added, and once again after an additional hour. The reaction was
stirred at 80.degree. C. for 1 h., and the solvent was removed
under vacuum. AcOEt (100 ml) was added and the solution was washed
with water (3.times.50 ml), dried over MgSO.sub.4, and concentrated
under vacuum to yield light yellow crystals (2.64 g). The sample
was recrystallized from heptane (10 ml) to yield off-white crystals
(1.26 g, 49%).
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta.: 11.55 (s, 1H), 8.47 (s,
1H), 8.08 (d, 1H), 6.98 (d, 1H), 3.91 (s, 3H), 1.64 (s, 9H), (also
some contamination signals at 1.58 and 1.46).
Step 4: 15-Bromo-pentadecanoic acid tert-butyl ester
##STR00037##
15-Bromo-pentadecanoic acid (5 g, 15.6 mmol) was heated to
70.degree. C. under a flow of N.sub.2 in toluene (50 ml).
N,N-dimethylformamide di-tert-butyl acetal (18.7 ml, 77.8 mmol) was
added over 10 min. The reaction was stirred at 55.degree. C. for 16
h. The sample was concentrated under vacuum to a yellowish solid.
The solid was dissolved in DCM (100 ml), washed with water
(2.times.40 ml) and dried over MgSO.sub.4 to yield a white residue
(5.35 g). The sample was recrystallized from ethanol (50 ml), by
initially cooling slightly and filtering off the first precipitate.
The filtrate was then cooled on an ice bath to form the desired
crystals, which were filtered off and dried to yield a white powder
(1.37 g, 23%). Concentrating the filtrate to 20 ml and cooling
yielded another batch of crystals (0.99 g, 15%).
HPLC-MS: m/z: 399+401 (M+23), Rt=7.04 min.
Step 5: 4-(14-tert-Butoxycarbonyl-tetradecyloxy)-isophthalic acid
3-tert-butyl ester 1-methyl ester
##STR00038##
15-Bromo-pentadecanoic acid tert-butyl ester (598 mg, 1.59 mmol),
4-hydroxy isophthalic acid 3-tert-butyl ester 1-methyl ester (400
mg, 1.59 mmol) and K.sub.2CO.sub.3 (329 mg, 2.38 mmol) were placed
in a flask with acetonitrile (25 ml) and refluxed under N.sub.2.
The reaction was followed via TLC (4:1 heptane/AcOEt). After 13 h
the sample was concentrated under vacuum to near dryness. AcOEt (50
ml) and water (25 ml) were added to the residue. The phases were
separated and the organic phase was washed with water and brine (25
ml each), dried over MgSO.sub.4 and concentrated to yield an oil
(841 mg, 97%).
HPLC-MS m/z: 571 (M+23) Rt=7.18 min.
Step 6: 4-(14-tert-Butoxycarbonyl tetradecyloxy) isophthalic acid
3-tert-butyl ester
##STR00039##
4-(14-tert-Butoxycarbonyl-tetradecyloxy)-isophthalic acid
3-tert-butyl ester 1-methyl ester (381 mg, 0.69 mmol) was dissolved
in methanol (10 ml). The solution was cooled to 0.degree. C. and 4
N NaOH (1 ml) was added. The solution was allowed to warm to rt and
more methanol (15 ml) was added. The reaction was stirred at rt for
30 min under N.sub.2, and at reflux for 2 h. The solution was
cooled to 0.degree. C. and 1 N HCl (1 ml) was added slowly. Water
(25 ml) was added, and the solution was extracted with AcOEt
(2.times.50 ml). The organic phases were pooled and washed with 1:1
water/sat. NaCl, dried over MgSO.sub.4, and concentrated under
vacuum to yield an oily solid (326 mg, 89%)
HPLC-MS m/z: 557 (M+23), Rt=6.5 min.
Step 7: 4-(14-tert-Butoxycarbonyl-tetradecyloxy) isophthalic acid
3-tert-butyl ester 1-(2,5-dioxo pyrrolidin-1-yl) ester
##STR00040##
4-(14-tert-Butoxycarbonyl tetradecyloxy) isophthalic acid
3-tert-butyl ester (0.15 g, 0.28 mmol) was dissolved in THF (2 ml).
DIEA (58 .mu.l, 0.34 mmol) was added, and the solution was cooled
to 0.degree. C. TSTU (0.10 g, 0.28 mmol) was added. The reaction
was stirred at 0.degree. C. for 30 min and then at rt for 16 h. The
sample was concentrated under vacuum to near dryness. AcOEt (20 ml)
was added and the solution was washed with 0.2 N HCl and sat.
NaHCO.sub.3 (3.times.5 ml each), dried over MgSO.sub.4 and
concentrated to yield a residue (0.18 g). The residue was purified
by flash chromatography (silica: AcOEt/heptane 3:7 (0.5 l), 1:1
(0.2 l)) yielding an oil with white solids (55 mg, 31%).
.sup.1H-NMR (CDCl3, 400 MHz) .delta.: 8.43 (s, 1H), 8.16 (d, 1H),
7.00 (d, 1H), 4.10 (t, 2H), 2.90 (s, 4H), 2.20 (t, 2H), 1.86 (t,
2H), 1.58 (s, 12H=9H+H.sub.2O), 1.49 (m, 2H), 1.44 (s, 9H), 1.26
(m, 20H).
Step 8:
N.sup..epsilon.B29-(3-Carboxy-4-(14-carboxytetradecyloxy)benzoyl)d-
esB30 human insulin
##STR00041##
4-(14-tert-Butoxycarbonyl-tetradecyloxy)isophthalic acid
3-tert-butyl ester 1-(2,5-dioxo pyrrolidin-1-yl) ester (13 mg,
0.021 mmol) was coupled to A1,B1-d-Boc-desB30 human insulin (123
mg, 0.021 mmol), and treated with TFA analogous to method used in
general procedure B, and purified as such to yield 38 mg
product.
MS: m/z: 1528.8, calculated: 6111.1: (M+4)/4).
Example 13
N.sup..epsilon.B29-(3-Carboxy-5-(14-carboxytetradecyloxy)benzoyl)
desB30 human insulin
##STR00042##
Step 1: 5-(14-tert-Butoxycarbonyltetradecyloxy) isophthalic acid
dimethyl ester
##STR00043##
5-Hydroxy-isophthalic acid dimethyl ester (420 mg, 2 mmol),
15-bromo-pentadecanoic acid tert-butyl ester (755 mg, 2 mmol) and
K.sub.2CO.sub.3 (415 mg, 3 mmol) were placed in a flask with
acetonitrile (25 ml) and refluxed under N.sub.2. The reaction was
followed by TLC (4:1 heptane/AcOEt), which indicated reaction
completion after 6 h. The sample was concentrated to near dryness.
AcOEt (50 ml) and water (25 ml) were added to the residue. The
phases were separated and the organic phase was washed with water
and brine (25 ml each), dried over MgSO.sub.4 and concentrated to
yield a white crystalline solid (1.0 g, 100%).
HPLC-MS m/z: 529 (M+23), Rt=7.12 min.
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta.: 8.26 (s, 1H), 7.74 (s,
2H), 4.03 (t, 2H), 3.94 (s, 6H), 2.20 (t, 2H), 1.80 (m, 2H), 1.57
(m, 2H), 1.44 (s, 9H), 1.26 (m, 20H).
Step 2: 5-(14-tert-Butoxycarbonyl-tetradecyloxy) isophthalic acid
bis-(2,5-dioxo-pyrrolidin-1-yl) ester
##STR00044##
5-(14-tert-Butoxycarbonyltetradecyloxy) isophthalic acid dimethyl
ester (965 mg, 1.91 mmol) was dissolved in methanol (50 ml) at
50.degree. C. under a flow of N.sub.2. After 30 min 1N NaOH (3.8
ml) was added and the solution was refluxed for 100 min. The
solution was cooled and 1 N HCl (4.5 ml) was added. The sample was
concentrated under vacuum, and the residue was taken up in AcOEt
(20 ml) and water (25 ml). The phases were separated and the
organic phase was washed with water (15 ml), died (MgSO.sub.4) and
concentrated to a white solid (900 mg).
This residue was dissolved in THF (10 ml) and placed in an ice
bath. DIEA (386 .mu.l, 2.26 mmol) was added, followed by TSTU (675
mg, 1.88 mmol). The reaction was stirred at 0.degree. C. for 30 min
and at rt for 16 h. The reaction mixture was concentrated under
vacuum and AcOEt (50 ml) was added. The solution was washed with
0.2 N HCl (3.times.50 ml), water (50 ml) and sat. NaCl (30 ml),
dried over MgSO.sub.4, and concentrated under vacuum to yield an
oil (1.12 g). The compound was purified by flash chromatography
(silica: 2:3 AcOEt/heptane) to yield an oil containing some
crystals (330 mg).
Some of this compound (290 mg) was dissolved in methanol (15 ml)
and 1N NaOH (2.5 ml), and heated in an oil bath at 70.degree. C.
for 4.5 h. The sample was evaporated to dryness, and AcOEt (25 ml),
water (15 ml) and 1N HCl (2.8 ml) were added. The phases were
separated and the organic phase was washed with water (15 ml),
dried over MgSO.sub.4, and concentrated to a white residue (210
mg).
The residue was dissolved in THF (10 ml), DIPEA (75 .mu.L, 0.44
mmol) was added, and the solution was cooled to 0.degree. C. TSTU
(173 mg, 0.48 mmol) was added and the reaction was stirred for 30
min at 0.degree. C. and 16 h at rt. The reaction was evaporated to
dryness, and AcOEt (25 ml) and 0.2 N HCl (26 ml) were added. The
phases were separated and the organic phase was washed with 0.2 N
HCl (2.times.25 ml), sat. NaHCO3 (3.times.25 ml) and sat. NaCl (25
ml), dried over MgSO.sub.4 and concentrated under vacuum. DCM was
added and the sample was concentrated to yield a residue. The
residue wash purified by flash chromatography (silica: 7:3
AcOEt/heptane) to yield 90 mg, which was again purified by flash
chromatography (silica: AcOEt/heptane 4:6 (100 ml) then 7:3 (100
ml)) to yield a white residue (19 mg, 8%)
HPLC-MS (Gradient) m/z: 696 (M+23); Rt: 6.04 min.
.sup.1H-NMR (CDCl.sub.3, 400 MHz) .delta.: 8.46 (s, 1H), 7.90 (s,
2H), 4.06 (t, 2H), 2.92 (s, 8H), 2.19 (t, 2H) 1.82 (m, 2H), 1.47
(m, 2H), 1.44 (s, 9H), 1.26 (m, 20H).
Step 3:
N.sup..epsilon.B29-(3-Carboxy-5-(14-carboxy-tetradecyloxy)-benzoyl-
)desB30 human insulin
The 5-(14-tert-Butoxycarbonyl-tetradecyloxy)isophthalic acid
bis-(2,5-dioxo-pyrrolidin-1-yl) ester was reacted with
A1-B1-di-Boc-des-B30-insulin, treated with TFA and purified
analogous to the general method B to yield the desired product.
Maldi-MS: m/z 6119.6: Calculated: 6111.1
Example 14
N.sup..epsilon.B29-{4-Carboxy-4-[10-(4-carboxy-phenoxy)-decanoylamino]-but-
yryl}desB30 human insulin
Step 1: 4-Hydroxy-benzoic acid tert-butyl ester
##STR00045##
4-Hydroxy-benzoic acid (2 g, 14.5 mmol) was heated to 80.degree. C.
in dry toluene (3 .ANG. molecular sieves) under a flow of N.sub.2.
N,N-dimethylformamide di-tert-butyl acetal (11.8 g, 57.92 mmol) is
added over 5 min. The mixture was stirred at 80.degree. C. for 50
min. The solution was washed with water, sat. NaHCO.sub.3 and sat.
NaCl (15 ml each), dried over MgSO.sub.4, and concentrated to yield
a yellow oil (2.92 g). Some of the oil (ca 1.7 g) was purified by
kuglerohr distillation (195.degree., 0.07 torr) to yield a
colourless oil (1.18 g). .sup.1H-NMR indicated the product
contained approximately 30% of a by-product where the phenol group
was protected with a tert-butyl group. The crude product was used
in the subsequent reaction.
Step 2: 2-(10-Bromodecanoylamino) pentanedioic acid 5-benzyl ester
1-tert-butyl ester
##STR00046##
10-Bromodecanoic acid (3.20 g, 12.7 mmol) was dissolved in DMF (50
ml) and cooled to 0.degree. C. under a flow of N.sub.2. DIEA (3.92
g, 30.3 mmol) and EDAC (2.56 g, 13.3 mmol) were added, and the
solution was stirred at 0.degree. for 30 min. Glu-(OBn)-tBu HCl (2
g, 6.06 mmol) was added and the solution was stirred for 30 min at
0.degree. C. and for 16 h at rt. The sample was concentrated under
vacuum, and transferred to a reparatory funnel with AcOEt (100 ml).
The solution was washed once with water and twice with 0.5 N NaOH
and 5% AcOH (50 ml each), using some sat. NaCl and methanol to
assist phase separation with the acidic washes. The organic phase
was dried over MgSO.sub.4, and concentrated to yield an oil (2.84
g). The oil was dissolved in 5 ml AcOEt and dispersed on a bed of
silica in a glass filter. Eluting with AcOEt (150 ml), and
concentrating under vacuum yielded a light brown oil (1.65 g,
52%)
HPLC-MS m/z: 550 (M.sub.+23), Rt=5.19 min.
Step 3:
2-[10-(4-tert-Butoxycarbonylphenoxy)decanoylamino]pentanedioic acid
5-benzyl ester 1-tert-butyl ester
##STR00047##
4-Hydroxy-benzoic acid tert-butyl ester (0.65 g, 3.08 mmol) was
dissolved in acetonitrile (7.5 ml) and added to
2-(10-Bromodecanoylamino) pentanedioic acid 5-benzyl ester
1-tert-butyl ester (1.62 g, 3.08 mmol). Acetonitrile (90 ml) and
K.sub.2CO.sub.3 (0.64 g, 4.62 mmol) was added and the mixture was
refluxed for 16 h under a flow of N.sub.2. The solvent was removed
under vacuum. AcOEt (100 ml) was added and the solution was washed
with water (2.times.50 ml) using sat. NaCl and methanol to aid
phase separation, dried over MgSO.sub.4, and concentrated to yield
a light brown oil (2.18 g). The oil was purified by flash
chromatography (silica, 95:5 DCM/AcOEt) to yield an oil (160 mg,
8%).
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta.: (selected signals) 7.91
(d, 2H), 7.25 (s, 5H), 6.87 (d, 2H), 6.06 (d, 1H), 5.11 (s, 2H),
4.52 (m, 1H), 3.98 (d, 2H), 2.2-2.6 (m, 3H), 2.17 (t, 2H),
1.90-2.02 (m, 1H), 1.73-1.82 (m, 2H), 1.58 (s, 9H).
HPLC-MS (Fastgrad) m/z: 640 (M+1), Rt=3.0 min.
Step 4:
2-[10-(4-tert-Butoxycarbonylphenoxy)decanoylamino]pentanedioic acid
1-tert-butyl ester 5-(2,5-dioxopyrrolidin-1-yl) ester
##STR00048##
2-[10-(4-tert-Butoxycarbonylphenoxy)decanoylamino]pentanedioic acid
5-benzyl ester 1-tert-butyl ester (160 mg, 0.25 mmol) was dissolved
in THF (10 ml) under a flow of N.sub.2, and palladium (26 mg, 10%
on carbon, 50% water) was added. The flask was evacuated and filled
with N.sub.2 four times, and a balloon filled with H.sub.2 was
connected to the system. The solution was stirred for 16 h at rt,
and filtered through a bed of celite, washing with THF (100 ml).
The filtrate was concentrated to yield the carboxylic acid (190
mg). The crude product was dissolved in THF (5 ml) and cooled to
0.degree. C. DIEA (64 .mu.l, 0.375 mmol) and TSTU (0.09 g, 0.3
mmol) were added. The mixture was stirred at 0.degree. C. for 1 h
and at rt for 16 h. AcOEt (50 ml) was added, and the solution was
washed with 0.2 M HCl (3.times.15 ml) and sat. NaHCO.sub.3
(2.times.15 ml), dried over MgSO.sub.4, and concentrated to yield
an oil (167 mg). Purification by flash chromatography (2:1
AcOEt/heptane) yielded a 107 mg of a colorless oil.
.sup.1H-NMR (CDCl.sub.3, 300 MHz) (selected signals) .delta. 7.92
(d, 2H), 6.87 (d, 2H), 6.22 (d, 1H), 4.61 (m, 1H) 3.99 (t, 2H),
2.83 (s, 4H), 2.62-2.75 (m, 2H), 2.30 (m, 1H), 2.22 (t, 2H), 2.10
(m, 1H), 1.58 (s, 9H).
Step 5:
N.sup..epsilon.B29-{4-Carboxy-4-[10-(4-carboxy-phenoxy)-decanoylam-
ino]-butyryl} desB30 human insulin
##STR00049##
2-[10-(4-tert-Butoxycarbonylphenoxy)decanoylamino]pentanedioic acid
1-tert-butyl ester 5-(2,5-dioxopyrrolidin-1-yl) ester was coupled
to desB30 human insulin in similar fashion as described in General
Procedure A. The intermediate product was purified by preparative
HPLC (C.sub.18-5 cm dia.) before treating with TFA. The product was
purified by preparative HPLC (C.sub.4 2 cm dia.) 15-65%
acetonitrile) followed by ion exchange chromatography (Column:
Amersham Resource Q-6 ml, Buffer A: 0.24% w/w tris, 0.25% w/w
ammonium acetate, 42.5% w/w ethanol, pH 7.5 with acetic acid,
Buffer B: 0.24% w/w tris, 2.5% w/w ammonium acetate, 42.5% w/w
ethanol, pH 7.5 with acetic acid.
HPLC-MS: m/z: 1532.6 (M+4)/4), calculated: 6126
Example 15
N.sup..epsilon.B29-[3-Carboxy-5-(octadecandioyl-N-carboxyethylglycin)amino-
benzoyl] desB30 human insulin
##STR00050##
Step 1
Synthesis of 3-(Benzyloxycarbonylmethylamino)propionic acid
tert-butyl ester
H-Gly-OBn, HCl (3.03 g, 15 mmol) was dissolved in dry DMF (15 ml)
and cooled on an ice bath. TEA (2.10, 15 mmol) was added under
precipitation of TEA-hydrochloride. The suspension was stirred for
5 min before t-butyl acrylate (2.20 ml, 15 mmol) was added. The
cooling bath was allowed to reach RT slowly and stirring was
continued under Nitrogen for 2 days. The reaction mixture was
filtered and the filtrate was concentrated. The residue, still
containing DMF, was dissolved in EtOAc and washed with sat aq
NaHCO.sub.3 (2.times.) and water (1.times.). The organic layer was
filtered before drying (Na.sub.2SO.sub.4) and concentration to give
an oil Purification by chromatography or preparative HPLC gave
3-(benzyloxycarbonylmethylamino)propionic acid tert-butyl as a
clear oil (0.739 g, 17%).
.sup.1H-NMR (CDCl.sub.3) .delta.: ppm 1.46 (s, 9H) 2.50-2.61 (m,
2H) 2.82-2.99 (m, 2H) 3.31 (s, 2H) 5.14 (s, 2H) 7.29-7.43 (m,
5H).
Step 2
Synthesis of
17-[Benzyloxycarbonylmethyl-(2-tert-butoxycarbonyl-ethyl)-carbamoyl]-hept-
adecanoic acid tert-butyl ester
3-(Benzyloxycarbonylmethylamino)propionic acid tert-butyl ester
(0,030 g, 0.1 mmol) and octadecanedioic acid tert-butyl ester
2,5-dioxo-pyrrolidin-1-yl ester (0,050 mg, 0.1 mmol) was suspended
in dry DMF (1 ml). HOAt (0.014 g, 0.1 mmol) and DIPEA (0.21 ml, 1.2
mmol) was added. The yellow reaction mixture was stirred under
nitrogen for 42 h. The reaction mixture was concentrated. The
residue was redissolved in EtOAc and washed with 0.1 N HCl
(2.times.), water (1.times.), dried (Na.sub.2SO.sub.4) and
concentrated to give
17-[Benzyloxycarbonylmethyl-(2-tert-butoxycarbonyl-ethyl)-carbamoyl]-hept-
adecanoic acid tert-butyl ester in 85% yield (55 mg).
.sup.1H-NMR (CDCl.sub.3) .delta.: ppm 1.3 (m, 26H) 1.38 (s, 9H),
1.46 (s, 9H), 1.6 (m, 4H), 2.2 (m, 2H), 2.35 (m, 2H), 2.65 (m, 2H),
2.85 (s, 2H) 3.65 (m, 2H), 5.15 (s, 2H) 7.35 (m, 5H).
Step 3
Synthesis of
17-[(2-tert-Butoxycarbonyl-ethyl)-carboxymethyl-carbamoyl]-heptadecanoic
acid tert-butyl ester
17-[Benzyloxycarbonylmethyl-(2-tert-butoxycarbonylethyl)-carbamoyl]-hepta-
decanoic acid tert-butyl ester (0,054 g, 0.08 mmol) was dissolved
in THF (2 ml). 10% Palladium on Charcoal was added and the mixture
was hydrogenated at 1 atm and RT over the week-end. The dry
reaction mixture was dissolved in EtOAc and filtered 3 times to
remove the carbon. The filtrate was concentrated to give
17-[(2-tert-Butoxycarbonyl-ethyl)-carboxymethyl-carbamoyl]-heptadecanoic
acid tert-butyl ester in 80% yield (37 mg).
.sup.1H-NMR (CDCl.sub.3) .delta.: ppm 1.3 (m, 26H) 1.40 (s, 9H),
1.46 (s, 9H), 1.6 (m, 4H), 1.75 (p, 2H), 2.2 (m, 2H), 2.35 (m, 2H),
2.63 (m, 2H), 2.83 (s, 2H).
Step 4
Synthesis of
5-{2-[(2-tert-Butoxycarbonyl-ethyl)-(17-tert-butoxycarbonyl-heptadecanoyl-
)-amino]-acetylamino}-isophthalic acid mono-tert-butyl ester
17-[(2-tert-Butoxycarbonyl-ethyl)-carboxymethyl-carbamoyl]-heptadecanoic
acid tert-butyl ester (0.130 g) was dissolved in dry DCM (5 ml).
HOAt (0.36 mg) and DIC (0.045 ml) was added the mixture was
refluxed for 1 h under nitrogen. The reaction mixture was cooled to
room temperature and 5-amino-isophthalic acid mono t-Butyl ester
(60 mg) was added. After stirring for 1 h DIPEA (0.050 ml) was
added, the orange reaction mixture turns yellow. After stirring for
2 days, the reaction mixture was concentrated. The residue was
redissolved in EtOAc and extracted with 0.1 N HCl (2.times.) and
brine (1.times.), dried (Na.sub.2SO.sub.4), and concentrated to
give an sirup, which solidifies on standing.
5-{2-[(2-tert-Butoxycarbonyl-ethyl)-(17-tert-butoxycarbonyl-heptadecanoyl-
)-amino]-acetylamino}-isophthalic acid mono-tert-butyl ester was
obtained in a quantitative yield (214 mg), contaminated with an
impurity. HPLC/MS 775 (M), rt 7.64 min.
Step 5
Synthesis of
5-{2-[(2-tert-Butoxycarbonyl-ethyl)-(17-tert-butoxycarbonyl-heptadecanoyl-
)-amino]-acetylamino}-isophthalic acid 1-tert-butyl ester
3-(2,5-dioxo-pyrrolidin-1-yl) ester
5-{2-[(2-tert-Butoxycarbonyl-ethyl)-(17-tert-butoxycarbonyl-heptadecanoyl-
)-amino]-acetylamino}-isophthalic acid mono-tert-butyl ester (214
mg) was dissolved in dry THF and TSTU (0.105 mg) and DIPEA (0.1 ml)
was added. The mixture was stirred at room temperature under
nitrogen. After 20 h the reaction mixture was concentrated. The
residue was redissolved in EtOAc and filteret. The filtrate was
extracted with 0.1 N HCl (2.times.) and brine (1.times.), dried
(Na.sub.2SO.sub.4) and concentrated to give
5-{2-[(2-tert-Butoxycarbonyl-ethyl)-(17-tert-butoxycarbonyl-heptadecanoyl-
)-amino]-acetylamino}-isophthalic acid 1-tert-butyl ester
3-(2,5-dioxo-pyrrolidin-1-yl) ester as a yellow sirup in 90% yield
(218 mg).
Step 6
Synthesis of
N.sup..epsilon.B29-[3-Carboxy-5-(octadecandioyl-N-carboxyethylglycin)amin-
o-benzoyl] desB30 insulin
5-{2-[(2-tert-Butoxycarbonyl-ethyl)-(17-tert-butoxycarbonyl-heptadecanoyl-
)-amino]-acetylamino}-isophthalic acid 1-tert-butyl ester
3-(2,5-dioxo-pyrrolidin-1-yl) ester was reacted with A1,B1-diBoc
insulin as described in general procedure B. The product was
purified by preperative HPLC to give the title compound. Over all
yield for coupling and hydrolysis, 18% (21 mg).
MALDI-MS (SA): 6288.8. anal. HPLC (neut), 93.8.5% purity, rt 10.22
min. (Column: C4 5.mu. 150.times.4.60 mm "phenomerex, Jupiter"
Buffer A: 10 mM Tris, 15 mM (NH4)2SO4, pH 7.3, 20% CH.sub.3CN in MQ
water. Buffer B: 80% CH.sub.3CN, 20% MQ-water, Flow: 1.5 ml/min;
Gradient: 0 min 5% B.fwdarw.20 min 55% B.fwdarw.22 min 80%
B.fwdarw.24 min 80% B=25 min 5% B) anal. HPLC (acidic), 100%
purity, rt 11.694 min (Column: C4 5.mu. 150.times.4.60 mm
"phenomerex, Jupiter" Buffer A: 0.1% TFA, 10% CH.sub.3CN, 89.9%
MQ-water Buffer B: 0.1% TFA, 80% CH.sub.3CN, 19.9% MQ-water, Flow:
1.5 ml/min; Gradient: 0 min 20% B.fwdarw.17 min 80% B.fwdarw.22 min
80% B.fwdarw.23 min 20% B.fwdarw.30 min 20% B.
Example 16
General Procedure A, Acylation Using desB30 Human Insulin
N.sup..epsilon.B29{3-[(3,5-Bis-carboxymethoxy-benzyl)-(15-carboxypentadeca-
noyl)amino]-propionyl desB30 human insulin
Step 1: Synthesis of Hexadecanedioic acid mono-(4-methoxy-benzyl)
ester
##STR00051## Hexadecandioic acid (2 g, 7 mmol) was dissolved in dry
NMP (25 mL). Diisopropylamin (1.2 mL, 7 mmol) and 4-methoxybenzyl
chloride (0.95 mL, 7 mmol) was added, followed by NaI (0.52 g, 3.5
mmol). The mixture was heated to 80.degree. C. for 1 hour, poured
into water (100 mL) and filtered. The precipate was washed with
dichloromethane (150 mL), the dichoromethane phase was dried
(Na.sub.2SO.sub.4) and solvent removed in vacuo to yield the crude
product, which was recrystalized several times from heptane to
yield hexadecanedioic acid mono-(4-methoxy-benzyl) ester.
.sup.1H NMR (CDCl.sub.3): .delta. 7.28 (d, 2H), 6.87 (d, 2H), 5.02
(s, 2H), 3.78 (s, 3H), 2.31 (m, 4H), 1.60 (m, 4H), 1.20 (m,
20H).
Step 2: Synthesis of
(3-Tert-Butoxycarbonylmethoxy-5-formylphenoxy)acetic acid
tert-butyl ester
##STR00052##
4,5 dihydroxybenzaldehyde (2.5 g, 18.1 mmol) was dissolved in NMP
(120 mL). Potassium carbonate (10 g, 72.4 mmol) was added, followed
by tert-butyl bromoacetate.
The mixture was stirred at room temperature, under nitrogen
overnight. The reaction was filtered and separated between diethyl
ether (400 mL) and water (400 mL). The organic phase was dried
(Na.sub.2SO.sub.4) and solvent removed in vacuo to yield the crude
product as an oil which solidifies by standing. The crude product
was used in the next step without further purification.
HPLC-MS:m/z=(389, M+Na); R.sub.t=4.50 min.
.sup.1H NMR (CDCl.sub.3): .delta. 9.85 (s, 1H), 7.00 (s, 2H), 6.75
(s, 1H), 4.58 (s, 4H), 1.44 (2, 18H)
Step 3: Synthesis of
3-(3,5-Bis-tert-butoxycarbonylmethoxybenzylamino)propionic acid
##STR00053##
Beta-alanine (0.5 g, 5.68 mmol) was dissolved in methanol (20 mL).
(3-Tert-Butoxycarbonylmethoxy-5-formylphenoxy)acetic acid
tert-butyl ester (2.08 g, 5.58 mmol) was dissolved in methanol (2
mL) and added. The mixture was heated to reflux for 1 hour and
allowed to cool to room temperature. Sodium cyanoborohydride (282
mg, 4.54 mmol) was added and the mixture stirred at room
temperature, after 1 hour acetic acid was added (2 mL) and the
mixture was stirred for an additional hour before being poured into
water (50 mL) and stirred overnight. The water phase was washed
with ethyl acetate (2.times.50 mL). The organic phase was dried
(Na.sub.2SO.sub.4) and solvent removed in vacuo to yield the crude
product. The crude product was used in the next step without
further purification.
HPLC-MS:m/z=(440, M+Na); R.sub.t=3.24 min.
Step 4: Synthesis of
15-[(3,5-Bis-tert-butoxycarbonylmethoxybenzyl)-(2-carboxyethyl)carbamoyl]-
pentadecanoic acid 4-methoxybenzyl ester
##STR00054##
Hexadecanedioic acid mono-(4-methoxy-benzyl) ester (0.4 g, 0.98
mmol) was dissolved in ethyl acetate (10 mL).
N-Ethyl-N-(3-dimethylaminopropyl)-carbodiimide hydrochloride (0.187
g, 0.98 mmol) and 1-hydroxy-7-azabenzotriazole (0.134 g, 0.98 mmol)
was added and the mixture was stirred at 50.degree. C. for 1 hour.
After cooling to room temperature, diisopropylethylamin (0.50 mL,
2.95 mmol) was added followed by
3-(3,5-Bis-tert-butoxycarbonylmethoxybenzylamino)propionic acid
(0.432 g, 0.98 mmol). The mixture was stirred overnight under
nitrogen at room temperature. The mixture was separated between
ethyl acetate (200 mL) and water (2.times.100 mL). The organic
phase was dried (Na.sub.2SO.sub.4), solvent removed in vacuo. The
crude product was purified by RP-HPLC on C18-column, buffer A: 0.1%
TFA, buffer B: MeCN+0.1% TFA; gradient 80-100% B to yield the title
compound.
HPLC-MS:m/z=(547, M+Na); R.sub.t=6.17 min.
Step 5: Synthesis of
15-{(3,5-Bis-tert-butoxycarbonylmethoxybenzyl)-[2-(2,5-dioxo-pyrrolidin-1-
-yloxycarbonyl)ethyl]carbamoyl}pentadecanoic acid 4-methoxy-benzyl
ester
##STR00055##
15-[(3,5-Bis-tert-butoxycarbonylmethoxybenzyl)-(2-carboxyethyl)carbamoyl]-
pentadecanoic acid 4-methoxybenzyl ester (190 mg, 0.23 mmol) was
dissolved in THF (5 mL). The mixture was cooled with an ice bath.
Diisopropylethylamin (0.047 mL, 0.28 mmol) and
O--(N-succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate
(83 mg, 0.28 mmol) was added. The mixture was stirred under
nitrogen at 0.degree. C. After 30 minutes the ice cooling was
removed and the mixture was stirred for an additional 3 hours.
Solvent removed in vacuo. The crude product was dissolved in ethyl
acetate (50 mL), washed with aqueous phosphate buffer (pH=5.5)
(3.times.25 mL). The organic phase was dried (Na.sub.2SO.sub.4),
solvent removed in vacuo to yield the title compound (163 mg) which
was used in subsequent step.
HPLC-MS: m/z=924; R.sub.t=6.5 min.
Step 6: Synthesis of
N.sup..epsilon.B29{3-[(3,5-Bis-carboxymethoxy-benzyl)-(15-carboxy-pentade-
canoyl)-amino]-propionyl desB30 human insulin
##STR00056##
DesB30 human insulin (742 mg, 0.13 mmol) was dissolved in aqueous
Na.sub.2CO.sub.3 (100 mM, 14.7 mL).
15-{(3,5-Bis-tert-butoxycarbonylmethoxybenzyl)-[2-(2,5-dioxo-pyrrolidin-1-
-yloxycarbonyl)ethyl]carbamoyl}pentadecanoic acid 4-methoxy-benzyl
ester (120 mg, 0.13 mmol) was dissolved in acetonitrile (7.4 mL)
and added. The mixture was stirred very slowly for 1 hour at RT. pH
was adjusted to 5.5 with aqueous HCl (1 N) and the suspension was
allowed to stand for 10 minutes at 0.degree. C. The precipitate was
isolated by centrifugation and treated with mixture of p-cresol
(0.750 mL) and TFA (14.25 mL) for 10 minutes. Poured into ice
cooled diethylether (30 mL), and the crude product was isolated by
centrifuge and purified with RP-HPLC on a Waters Prep LC2000, on
C18, 5 cm.times.20 cm, flow 20 ml/min using acetonitrile/water
15-55% gradient containing 0.1% TFA. Fractions containing product
was collected and lyophilized. To the lyophilized material was
added water (7.2 mL) and pH adjusted to 8.98 with 1 N+0.1 N NaOH.
The pH was adjusted back to 5.2-5.5 with 0.1 N HCl. The product
precipitated, isolated by centrifugation and lyophilized to give
the title compound. HPLC-MS: m/z=1257 (m/5), R.sub.t=3.27 min.
Example 17
N.sup..epsilon.B29-3-[4'-(2-Carboxyethyl)biphenyl-4-yl]propionyl-.gamma.-L-
-glutamyl desB30 insulin
##STR00057##
Step 1: Synthesis of tert-butyl 3-(4-bromophenyl)propionate
3-(4-Bromophenyl)propionic acid (1.0 g, 4.4 mmol) was dissolved in
toluene (15 ml) and treated with N,N-dimethylformamide ditert-butyl
acetal (1.8 g, 8.7 mmol). The mixture was heated to 90.degree. C.
for 5 hours, and then treated with more N,N-dimethylformamide
ditert-butyl acetal (1.8 g, 8.7 mmol). The mixture was left at
90.degree. C. overnight. Ethyl acetate was added (25 ml) and the
organic phase was washed with 2.times.0.1 M HCl, 2.times.5%
Na.sub.2CO.sub.3 and water. Drying over MgSO.sub.4 and evaporation
in vacuo gave tert-butyl 3-(4-bromophenyl)propionate, 0.735 g
(59%).
.sup.1H-NMR (CDCl.sub.3) .delta.: 7.47 (d, 2H), 7.08 (d, 2H), 2.87
(t, 2H), 2.52 (t, 2H), 1.42 (s, 9H).
Step 2: Synthesis of tert-butyl
3-[4'-(2-Carboxyethyl)-biphenyl-4-yl]-propionate
Tert-butyl 3-(4-bromophenyl)propionate (433 mg, 1.52 mmol) in
acetonitrile-water (3:1, 13 ml) under argon atmosphere was treated
with 4-(2-carboxyethyl)benzeneboronic acid (294 mg, 1.52 mmol),
K.sub.2CO.sub.3 (251 mg, 1.82 mmol) and (Ph.sub.3P).sub.4Pd (87 mg,
73 .mu.mol), and the stirred mixture was heated at 90.degree. C.
for 4 hours. Excess ethyl acetate and 2 M HCl was added and the
organic phase was washed with 2.times.2 M HCl and 2.times. water.
Drying over MgSO.sub.4 and evaporation in vacuo gave the crude
product, which was purified by chromatography on silica column
eluted with ethyl acetate/hexane/acetic acid 50:50:1 to provide
tert-butyl 3-[4'-(2-Carboxy-ethyl)-biphenyl-4-yl]-propionate, 330
mg (62%).
.sup.1H-NMR (CDCl.sub.3) .delta.: 7.50 (dd, 4H), 7.26 (dd, 4H),
3.00 (t, 2H), 2.94 (t, 2H), 2.72 (t, 2H), 2.57 (t, 2H), 1.42 (s,
9H).
Step 3: Synthesis of tert-butyl
3-[4'-(2-O-succinimidyl-carboxy-ethyl)-biphenyl-4-yl]-propionate
Tert-butyl 3-[4'-(2-Carboxy-ethyl)-biphenyl-4-yl]-propionate (330
mg, 0.93 mmol) was dissolved in THF (5 ml) and treated with TSTU
(336 mg, 1.12 mmol) and DIEA (191 .mu.L, 1.12 mmol), and the
mixture was stirred at room temperature overnight. The mixture was
filtered, the solvent was evaporated in vacuo, and the crude
product was dissolved in ethyl acetate, and washed with 2.times.0.1
M HCl, 2.times.5% Na.sub.2CO.sub.3 and water. Drying over
MgSO.sub.4 and evaporation in vacuo gave tert-butyl
3-[4'-(2-O-succinimidyl-carboxy-ethyl)-biphenyl-4-yl]-propionate,
374 mg (89%).
.sup.1H-NMR (CDCl.sub.3) .delta.: 7.50 (dd, 4H), 7.27 (dd, 4H),
3.10 (t, 2H), 2.95 (m, 4H), 2.84 (s, 4H), 2.57 (t, 2H), 1.42 (s,
9H).
Step 4: Synthesis of tert-butyl
3-[4'-(2-O-succinimidyl-carboxy-ethyl)-biphenyl-4-yl]-propionate-L-glutam-
yl .alpha.-tert-butyl ester
Tert-butyl
3-[4'-(2-O-succinimidyl-carboxy-ethyl)-biphenyl-4-yl]-propionate
(100 mg, 0.22 mmol) was dissolved in DMF (1.0 ml) and treated with
L-Glu-OtBu (50 mg, 0.25 mmol) and DIEA (56 .mu.L, 0.33 mmol) and
stirred at room temperature overnight. The solvent was removed in
vacuo, and the residue was dissolved in ethyl acetate and washed
with 2.times.0.2 M HCl, water and brine. Drying over MgSO.sub.4 and
evaporation in vacuo gave tert-butyl
3-[4'-(2-O-succinimidyl-carboxy-ethyl)-biphenyl-4-yl]-propionate-L-glutam-
yl .alpha.-tert-butyl ester, 119 mg (100%).
.sup.1H-NMR (CDCl.sub.3) .delta.: 7.48 (dd, 4H), 7.24 (dd, 4H),
6.30 (bd, 1H), 4.54 (m, 1H), 2.95 (m, 4H), 2.56 (m, 4H), 2.31 (m,
2H), 2.16 (m, 1H), 1.86 (m, 1H), 1.44 (s, 9H), 1.42 (s, 9H).
Step 5: Synthesis of tert-butyl
3-[4'-(2-O-succinimidyl-carboxy-ethyl)-biphenyl-4-yl]-propionate-L-glutam-
yl-.gamma.-O-succinimidyl .alpha.-tert-butyl ester
Tert-butyl
3-[4'-(2-O-succinimidyl-carboxy-ethyl)-biphenyl-4-yl]-propionate-L-Glu-Ot-
Bu (120 mg, 0.22 mmol) in THF (2 ml) and reacted with TSTU (80 mg,
0.27 mmol) and DIEA (46 .mu.L, 0.27 mmol) as described in step 3
above to provide tert-butyl
3-[4'-(2-O-succinimidyl-carboxy-ethyl)-biphenyl-4-yl]-propionate-L-glutam-
yl-.gamma.-O-succinimidyl .alpha.-tert-butyl ester, 136 mg
(96%).
.sup.1H-NMR (CDCl.sub.3) .delta.: 7.50 (dd, 4H), 7.25 (dd, 4H),
6.21 (d, 1H), 4.60 (m, 1H), 3.00 (t, 2H), 2.94 (t, 2H), 2.78 (s,
4H), 2.56 (m, 6H), 2.36 (m, 1H), 2.04 (m, 1H), 1.46 (s, 9H), 1.43
(s, 9H).
Step 5: Synthesis of
N.sup..epsilon.B29-3-[4'-(2-Carboxy-ethyl)-biphenyl-4-yl]-propionyl-.gamm-
a.-L-glutamyl desB30 insulin
DesB30 human insulin (500 mg, 88 .mu.mol) was reacted with
tert-butyl
3-[4'-(2-O-succinimidyl-carboxy-ethyl)-biphenyl-4-yl]-propionate-L-glutam-
yl-.gamma.-O-succinimidyl .alpha.-tert-butyl ester (67 mg, 105
.mu.mol), and the product was isolated, deprotected and
HPLC-purified as described for example 11. LCMS: 6114.0,
C.sub.276H.sub.399N.sub.65O.sub.81S.sub.6 requires 6116.0.
Example 18
General procedure A, Acylation using desB30 human insulin
N.sup..epsilon.B29-.omega.-carboxypentadecanoy-(4-aminomethylbenzoyl)-.ga-
mma.-L-glutamyl desB30 human insulin-Glu-desB30 insulin
Step 1: Synthesis of
4-[(15-tert-Butoxycarbonylpentadecanoylamino)methyl]benzoic
acid
##STR00058##
To 4-(Aminomethyl)benzoic acid (0.2 g, 1.32 mmol) was added in NMP
(5 mL). Hexadecanedioic acid tert-butyl ester
2,5-dioxo-pyrrolidin-1-yl ester (0.58 g, 1.32 mmol) was added and
the mixture was stirred at room temperature overnight. The mixture
was poured into water (100 mL), the precipitate was isolated by
filtration and dried in vacuo. The crude material was recrystalized
from toluene to give
4-[(15-tert-butoxycarbonylpentadecanoylamino)methyl]benzoic acid
(413 mg).
.sup.1H NMR (DMSO-d.sub.6): .delta. 12.77 (br s, 1H), 8.36 (t, 1H),
7.87 (d, 2H), 7.32 (d, 2H), 4.32 (d, 2H), 2.15 (q, 4H), 1.48 (m,
4H), 1.38 (s, 9H), 1.28-1.18 (br s, 20H)
Step 2: Synthesis of
(S)-2-{4-[(15-tert-Butoxycarbonyl-pentadecanoylamino)-methyl]-benzoylamin-
o}-pentanedioic acid 1-tert-butyl ester
##STR00059##
4-[(15-tert-butoxycarbonylpentadecanoylamino)methyl]benzoic acid
(413 mg, 0.868 mmol) was dissolved in THF (5 mL), the solution was
cooled with an icebath. DIPEA (0.33 mL, 1.91 mmol) and TSTU (314
mg, 1.04 mmol) were added. The mixture was stirred under nitrogen
while cooling was maintained. After 30 minutes the icebath was
removed and the mixture was stirred for additional 3 hours at room
temperature. The mixture was diluted with NMP (5 mL) and H-GluOtBu
(0.21 g, 1.04 mmol) was added, the mixture was stirred overnight at
room temperature. The mixture was separated between ethyl acetate
(100 mL) and water (100 mL), the organic phase dried
(Na.sub.2SO.sub.4) and solvent removed in vacuo. The crude material
was purified on silica using DCM/ethanol (90:10) to give
(S)-2-{4-[(15-tert-Butoxycarbonyl-pentadecanoylamino)-methyl]-benzoylamin-
o}-pentanedioic acid 1-tert-butyl ester.
.sup.1H NMR (CDCl.sub.3): .delta. 7.63 (d, 2H), 7.20 (m, 3H), 6.52
(t, 1H), 4.62 (m, 1H), 4.40 (d, 2H), 2.50 (m, 2H), 2.30-2.10 (m,
6H), 1.70-1.55 (m, 4H), 1.50 (s, 9H), 1.45 (s, 9H), 1.35-1.20 (m,
20H)
Step 3: Synthesis of
N.sup..epsilon.B29-.omega.-carboxypentadecanoyl-(4-aminomethylbenzoyl)-.g-
amma.-L-glutamyl desB30 human insulin
##STR00060##
The compound was prepared similar as described in step 3 and step 4
in general procedure B using
(S)-2-{4-[(15-tert-Butoxycarbonyl-pentadecanoylamino)-methyl]-benzoylamin-
o}-pentanedioic acid 1-tert-butyl ester.
Example 19
N.sup..epsilon.B29
(4-{[(2-Carboxy-ethyl)-(15-carboxy-pentadecanoyl)amino]methyl}benzoyl)-.g-
amma.-D-glutamyl desB30 human insulin
Step 1: Synthesis of resin bound Fmoc-D-Glu-OtBu
1 g of polystyrene resin functionalized with a 2-chlorotrityl
chloride linker (1.4 mmol/g) was vortexed with NMP (10 mL) and
1,2-dichloropropane (10 mL) for 1 hour. The resin was filtered and
washed with dichloromethane (20 mL). Fmoc-D-Glu-OtBu (596 mg, 1.4
mmol) was dissolved together with diisopropylethylamine (0.96 mL,
5.6 mmol) in dichloromethane (20 mL) and added to the resin. After
shaking the suspension for 2 hours at 25.degree. C., the resin was
isolated by filtration and washed with NMP (2.times.20 mL)
Step 2: Synthesis of resin bound 4-Formylbenzoyl-D-Glu-OtBu
To the above resin bound Fmoc-D-Glu-OtBu was treated with a 20%
solution of piperidine in NMP (2.times.20 mL in 2.times.5 min),
after the resin was drained and washed with NMP (6.times.20 mL).
NMP (10 mL) and diisopropylethylamin (0.96 mL) was added to the
resin. 4-formylbenzoic acid (0.841 g, 5.6 mmol) and
1-hydroxybenzotriazole (0.757 g, 5.6 mmol) were dissolved in NMP
(10 mL), followed by diispropylcarbodiimide (0.867 mL, 5.6 mmol)
and stirred for The for 10 minutes before added to the resin. The
mixture was shaken for 2 hours at 25.degree. C. followed by
filtration and washing of the resin with N-methyl-2-pyrrolidinone
(3.times.20 mL).
Step 3: Synthesis of resin bound
4-[(2-tertbutoxycarbonylethylamino)-methyl]benzoyl-D-Glu-OtBu
The above resin bound 4-Formylbenzoyl-D-Glu-OtBu was treated with
tert-Butyl beta-alanine hydrochloride (0.902 g, 5 mmol) and
diisopropylamine (0.856 mL, 5 mmol) in a mixture of NMP and
trimethylorthoformate (1:1 10 mL) and glacial aceitic acid (1 mL)
for 1 hour at 25.degree. C. Sodium cyanoborohydride (314 mg, 5
mmol) was dissolved in a mixture of N-methyl-2-pyrrolidin-one and
methanol (1:1, 5 mL) and added. The mixture was vortexed at
25.degree. C. for 4 hours followed by filtration and washing with a
mixture of NMP and methanol (1:1, 2.times.20 mL), NMP (3.times.20
mL) and a mixture of 1,2-dichloropropane and diisopropylethylamine
(7:1, 2.times.20 mL).
Step 4: Synthesis of resin bound
4-{[(2-tert-butoxycarbonylethyl)-(15-tert
butoxycarbonylpentadecanoyl)-amino]-methyl}benzoyl-D-Glu-OtBu
The above resin bound
4-[(2-tertbutoxycarbonylethylamino)-methyl]benzoyl-D-Glu-OtBu was
added solution of hexadecanedioic acid mono-tert-butyl ester (685
mg, 2 mmol) in NMP, 1,2-dichloropropane, DIPEA (4.5:4.5:1, 10 mL)
followed by a solution of bromo-tris-pyrrolidino-phosphonium
hexafluorophosphate (PyBrop) (0.93 g, 2 mmoL) dissolved in
1,2-dichloropropane (10 mL). The mixture was vortexed at 50.degree.
C. for 3 hours followed by filtration and washing with NMP
(4.times.20 mL) and DCM (10.times.20 mL).
Step 5: Synthesis of 4-{[(2-tert-butoxycarbonylethyl)-(15-tert
butoxycarbonylpentadecanoyl)-amino]-methyl}benzoyl-D-Glu-OtBu
##STR00061##
The resin bound 4-{[(2-tert-butoxycarbonylethyl)-(15-tert
butoxycarbonylpentadecanoyl)-amino]-methyl}benzoyl-D-Glu-OtBu was
treated with DCM containing 1 TFA (2.times.20 mL, 2.times.10 min).
After filtration the DCM/TFA fraction were collected and washed
with NaHCO.sub.3 5% (20 mL). The organic fase was dried (Na2SO4),
solvent removed in vacuo and crude material was purified on
silicagel column eluted with DCM/EtOH 95:5 to give
4-{[(2-tert-butoxycarbonylethyl)-(15-tert
butoxycarbonylpentadecanoyl)-amino]-methyl}benzoyl-D-Glu-OtBu
.sup.1H-NMR (CDCl.sub.3): .delta. 7.80 (dd, 2H), 7.30-7.08 (m, 3H),
4.72-4.60 (m, 3H), 3.60-3.50 (m, 2H), 2.57-2.40 (m, 5H), 2.37-2.04
(m, 5H), 1.70-1.53 (m, 4H), 1.50 (s, 9H), 1.45 (m, 18H), 1.25 (m,
20H). H PLC-MS (Method 50-99): m/z=811 (M+Na); R.sub.t=2.32
min.
Step 6: Synthesis of Synthesis of
(R)-2-(4-{[(2-tert-Butoxycarbonyl-ethyl)-(15-tert-butoxycarbonyl-decanoyl-
)-amino]-methyl}-benzoylamino)-pentanedioic acid 1-tert-butyl ester
5-(2,5-dioxopyrrolidin-1-yl) ester
##STR00062##
The compound was prepared similar as described in step 3 in general
procedure A using
(R)-2-{4-[(15-tert-Butoxycarbonyl-pentadecanoylamino)-methyl]-benzoylamin-
o}-pentanedioic acid 1-tert-butyl ester.
HPLC-MS (Method 50-99): m/z=(908, M+Na); R.sub.t=2.37 min.
Step 7: Synthesis of N.sup..epsilon.B29
(4-{[(2-Carboxy-ethyl)-(15-carboxy-pentadecanoyl)amino]methyl}benzoyl)-.g-
amma.-D-glutamyl desB30 human insulin
##STR00063##
Des-B30 human insulin (386 mg, 0.068 mmol) was dissolved in DMSO
(3.5 mL) together with triethylamin (0.094 mL, 0.677 mmol).
(R)-2-(4-{[(2-tert-Butoxycarbonyl-ethyl)-(15-tert-butoxycarbonyl-decanoyl-
)-amino]-methyl}-benzoylamino)-pentanedioic acid 1-tert-butyl ester
5-(2,5-dioxo-pyrrolidin-1-yl) ester (60 mg, 0.068 mmol) was
dissolved in THF (1 mL) and added. The mixture was stirred at room
temperature for 30 minutes. Cooled on an icebath and dilted with
Milli-Q water (7 mL). The pH was adjusted to 5.5 with 1 N HCl,
which lead to precipitation. The tube was centrifuged and the
solvent was decanted from the solid. The solid was washed once with
Milli-Q water (7 mL), and centrifuged again. Solvent was decanted
from the solid and to the solid was added TFA (10 mL). The mixture
was stirred for 30 minutes and poured into diethylether (35 mL) and
centrifuged, after drying in vacuo The crude material was purified
Akta purifier simelar to what has been described above.
HPLC-MS (Method Sciex): m/z=1578 (m/4), 1262 (m/5); R.sub.1=3.38
min
Example 20
N.sup..epsilon.B29-4-{[(2-Carboxyethyl)-(15-carboxypentadecanoyl)amino]met-
hyl}benzoyl)-.gamma.-L-glutamyl desB30 human insulin
General Procedure A, Acylation using desB30 Human Insulin
Step 1: Synthesis of
(S)-2-(4-{[(2-tert-Butoxycarbonyl-ethyl)-(15-tert-butoxycarbonyl-decanoyl-
)-amino]-methyl}-benzoylamino)-pentanedioic acid 1-tert-butyl
ester
##STR00064##
To H-Glu-OtBu, HCl (30.5 mg, 0.128 mmol) in DMF (1 mL) was added
DIPEA (0.022 mL, 0.128 mmol),
4-{[(2-tert-Butoxycarbonylethyl)-(15-tert-butoxycarbonyl
pentadecanoyl)amino]methyl}benzoic acid 2,5-dioxopyrrolidin-1-yl
ester (45 mg, 0.064 mmol) was dissolved in DMF (1 mL) and added.
The mixture was stirred under nitrogen at room temperature
overnight, separated between ethylacetate and water. The organic
phase was dried (MgSO.sub.4) and solvent removed in vacuo.
HPLC-MS (Method fast grad): m/z=(789, M+1); R.sub.1=2.39 min.
Step 2: Synthesis of
(S)-2-(4-{[(2-tert-Butoxycarbonyl-ethyl)-(15-tert-butoxycarbonyl-decanoyl-
)-amino]-methyl}-benzoylamino)-pentanedioic acid 1-tert-butyl ester
5-(2,5-dioxo-pyrrolidin-1-yl) ester
##STR00065##
The compound was prepared similar as described in step 3 in general
procedure A using
(S)-2-{4-[(15-tert-Butoxycarbonyl-pentadecanoylamino)-methyl]-benzoylamin-
o}-pentanedioic acid 1-tert-butyl ester.
HPLC-MS (Method fast grad): m/z=(908, M+Na); R.sub.t=2.51 min.
Step 3: Synthesis of
N.sup..epsilon.B29-4-{[(2-Carboxyethyl)-(15-carboxypentadecanoyl)amino]me-
thyl}benzoyl)-.gamma.-L-glutamyl desB30 human insulin
##STR00066##
The compound was prepared similar as described in step 4 in general
procedure B using
(S)-2-(4-{[(2-tert-Butoxycarbonyl-ethyl)-(15-tert-butoxycarbonyl-decanoyl-
)-amino]-methyl}-benzoylamino)-pentanedioic acid 1-tert-butyl ester
5-(2,5-dioxo-pyrrolidin-1-yl) ester.
Example 21
General Procedure A
N.sup..epsilon.B29-{4-[2-(4-carboxymethylphenyl)ethyl]phenyl}acetyl-.gamma-
.-L-glutamyl desB30 human insulin
Step 1: Synthesis of
2-(2-{4-[2-(4-tert-Butoxycarbonylmethyl-phenyl)-ethyl]-phenyl}-acetylamin-
o)-pentanedioic acid 5-tert-butyl ester
1-(2,5-dioxopyrrolidin-1-yl) ester
##STR00067## The compound was prepared similar as described in
example 11 step 1 to 4 (for tert-butyl
hexadecandioyl-L-Glu(OSu)-OtBu) starting from
4,4-dimethylbis(Phenylacetic acid) (purchased from Sigma-Aldrich
Library of Rare Chemicals).
Step 2: Synthesis of
N.sup..epsilon.B29-{4-[2-(4-carboxymethylphenyl)ethyl]phenyl}acetyl-.gamm-
a.-L-glutamyl desB30 human insulin
##STR00068##
2-(2-{4-[2-(4-tert-Butoxycarbonylmethyl-phenyl)-ethyl]-phenyl}-acetylamin-
o)-pentanedioic acid 5-tert-butyl ester
1-(2,5-dioxo-pyrrolidin-1-yl) ester was reacted with Human des(B30)
insulin followed by TFA treatment similar as described in general
procedure A. Purification by RP-HPLC was performed on a Gilson 215
system using a SP 250/21 Nucleosil 300-7 C4 column and a
water/acetonitrile 30-80% gradient containing 0.1% TFA. Fractions
containing product were collected and lyophilized.
MALDI-MS: (SA); m/z: 6117.57. Acidic HPLC: Rt=9.61 min; 98.8%
purity. Run time 30 min. Column: C4 5.mu. 150.times.4_60 mm
"phenomenex, Jupiter". A-Buffer: 0.1% TFA, 99.9% MQ-water,
B-buffer: 0.1% TFA, 99.9% Acetonitrile. Flow: 1,5 ml/min. Gradient:
0-17 min, 20-90% B, 17-21 min 90% B, 21-23 min 90-20% B, 23-30 min
20% B. Neutral HPLC: Rt=4.20 min; 99.44% purity. Run time: 30 min.
Column: C4 5.mu. 150.times.4_60 mm "phenomenex, Jupiter". A-buffer:
10 mM Tris, 15 mM (NH.sub.4).sub.2SO.sub.4, 20% acetonitrile in
Mili Q water, pH 7.3 B-buffer: 20.0% MQ-water in acetonitrile.
Flow: 1.5 ml/min, 1-20 min: 10-50% B, 20-22 min: 50-60% B, 22-23
min: 60-10% B, 23-30 min 10% B 30-31 min 10% B flow: 0.15 ml/min.
214 nm.
Example 22
N.sup..epsilon.B29-(3-carboxy-4-hexdecandioylaminobenzoyl) desB30
human insulin
Step 1: 4-Nitro-isophthalic acid
Potassium permanganate (13.07 g) was dissolved in water (80 ml) in
a flask fitted with a termometer and a reflux condenser.
4-Nitro-m-xylene (2.23 ml) was added. The mixture was cautiously
heated to 85.degree. C. Cooling to maintain the reaction mixtue at
85.degree. C. was not necessarry. After 20 min. the mixture was
refluxed gently for 3 h (the purple colour had dissapeared and the
mixture was almost black). The warm mixture was filtered through
celite. The cold filtrate was acidified with concentrated sulfuric
acid and a milky suspention was obtained. Extraction with EtOAc
(3.times.). The combined organic layes was dried (Na.sub.2SO.sub.4)
and concentrated to give a white crystaline compound. Purification
by flash chromatography using EtOAc/Heptane/AcOH 10:10:1 as eluent
gave a white crystaline compound in 44% yield (1.55 g).
.sup.1H-NMR (DMSO-d.sub.6) .delta.: 8.07 (d, 1H) 8.26 (d, 1H) 8.33
ppm (s, 1H).
Step 2: 3-tert-Butyl 4-Nitro-isophthalate
##STR00069##
4-Nitro-isophthalic acid (1.0 g) was dissolved in hot toluene (30
ml) and DMF (2 ml). Dimethylformamid-di-t-butyl acetale (3.4 ml)
was added dropwise over 1 h min at 100.degree. C. Stirring at
100.degree. C. was continued for 135 min. The cold reaction mixture
was concentrated to give a crude mixture of starting material,
4-nitro-isophthalic acid di-tert-butyl ester, 1-tert-butyl
4-nitro-isophthalate and 3-tert-butyl 4-nitroisophthalate.
Purification by flash chromatography using EtOAc/Heptane/AcOH
5:15:1 or DCM/AcOH 20:1 resulted in isolation of 3-tert-Butyl
4-Nitro-isophthalate contaminated with 1-tert-Butyl
4-Nitro-isophthalate (10:1). The isomers were determined by
NOE-experiments.
.sup.1H-NMR (CDCl.sub.3) .delta.: 1.55 (s 9H), 7.89 (d, 1H) 8.32
(d, 1H) 8.49 ppm (s, 1H). HPLC-MS: 268 (M+1).
Step 3: 3-tert-Butyl 4-amino-isophthalate
##STR00070##
3-tert-Butyl 4-Nitro-isophthalate (100 mg) was dissolved in EtOAc
(3 ml) and 10% Pd/C was added. The mixture was hydrogenated at 1
atm for 2 h. The mixture was filtered and concentrated to give the
title compound as a white foam in quantitative yield (90 mg).
.sup.1H-NMR (CDCl.sub.3) .delta.: 1.60 (s 9H), 6.32 (d, 1H) 7.86
(d, 1H) 8.58 ppm (s, 1H). HPLC-MS: 238 (M+1).
Step 4: 4-(15-tert-Butoxycarbonyl-pentadecanoylamino)-isophthalic
acid 3-tert-butyl ester
##STR00071##
Hexadecanedioic acid mono-t-Bu ester (60 mg) was dissolved in dry
THF (1 ml).
N,N,N',N'-Tetramethylfluorformamidiniumhexafluorophosphate (46 mg)
was added. The mixture was stirred at RT under Nitrogen. A fine
precipitate was observed after a while. After 75 min 3-tert-Butyl
4-amino-isophthalate (9:1 mixture, 45 mg) and DIPEA (0.05 ml) was
added. After 5 days the mixture was concentrated. The residue was
dissolved in EtOAc and extracted with 0.1 M HCl (2.times.), washed
with brine (1.times.), dried (Na.sub.2SO.sub.4) and concentrated to
give a sirup, which was purified by flash chromatography using
EtOAc/Hept/AcOH 4:16:1 to give the product contaminated with
hexadecanedioic acid mono-t-Bu ester 1:4. (63 mg).
HPLC-MS: 562 (M+1).
Step 5: 4-(15-tert-Butoxycarbonyl-pentadecanoylamino)-isophthalic
acid 3-tert-butyl ester 1-(2,5-dioxo-pyrrolidin-1-yl) ester
##STR00072##
The compound was prepared similar as described in example 1
(general procedure A) step 3 using
4-(15-tert-Butoxycarbonyl-pentadecanoylamino)-isophthalic acid
3-tert-butyl ester instead.
HPLC-MS: 659 (M+1).
Step 6: N.sup..epsilon.B29-(3-carboxy-4-hexdecandioylaminobenzoyl)
desB30 human insulin
##STR00073##
(15-tert-Butoxycarbonyl-pentadecanoylamino)-isophthalic acid
3-tert-butyl ester 1-(2,5-dioxo-pyrrolidin-1-yl) ester was reacted
with A1,B1,BOC,BOC-human desB30 insulin followed by TFA treatment
similar as described in general procedure B. Purification by
RP-HPLC was performed on a Gilson 215 system using a SP 250/21
Nucleosil 300-7 C4 column and a water/acetonitril 20-80% gradient
containing 0.1% TFA. Fractions containing product were collected
and lyophilized.
MALDI-MS: (SA); m/z: 6140.3. Acidic HPLC: Rt=11.27 min; 83.4%
purity. Rub time: 30 min. Column:C4 5.mu. 150.times.4_60 mm
"phenomenex, Jupiter". A-Buffer: 0.1% TFA, 99.9% MQ-water,
B-buffer: 0.1% TFA, 99.9% Acetonitrile. Flow: 1.5 ml/min. Gradient:
0-17 min, 20-90% B, 17-21 min 90% B, 21-23 min 90-20% B, 23-30 min
20% B. Neutral HPLC: Rt=9.10 min; 92.6% purity: Run time: 30 min
Column: C4 5.mu. 150.times.4_60 mm "phenomenex, Jupiter". A-buffer:
10 mM Tris, 15 mM (NH.sub.4).sub.2SO.sub.4, 20% acetonitrile in
Mili Q water, pH 7.3 B-buffer: 20.0% MQ-water in acetonitrile.
Flow: 1.5 ml/min 1-20 min: 5% B til 50% B, 20-22 min: 50-60% B,
22-23 min: 60% B til 5% B, 23-30 min 5 til 0% B 30-31 min 0-5% B,
flow: 0.15 ml/min. 214 nm.
Example 23
N.sup..epsilon.B29-10-(4-carboxyphenylsulfanyl)decanoyl-.gamma.-L-glutamyl
desB30 human insulin
##STR00074##
Step 1: 4-(9-Methoxycarbonyl nonylsulfanyl) benzoic acid
4-Mercaptobenzoic acid (2.0 g, 13 mmol) was placed in THF (25 ml).
DIEA (3.7 g, 28.5 mmol) was added followed by a solution of methyl
10-bromodecanoate (3.44 g, 13 mmol) in THF (10 ml). After 1 h the
solvent was removed under vacuum to yield a slurry, which was
stored at rt for 3 days. AcOEt (100 ml) and 1 N HCl (50 ml) were
added, but the precipitate did not dissolve very well. Sat. NaCl
was added and then methanol in order to aid phase separation. The
aqueous phase was removed, and DCM was added to the organic phase,
but the precipitates still did not dissolve. The organic phase was
concentrated under vacuum and dried with toluene by adding and
evaporating twice. Drying under vacuum yielded a white solid (4.4
g, quantitative yield).
HPLC-MS (fast grad) m/z: 361 (M+23), R.sub.t=2.34 min.
.sup.1H-NMR (DMSO, 300 MHz) .delta. 12.86 (br, 1H), 7.84 (d, 2H),
7.37 (d, 2H), 3.57 (s, 3H), 3.03 (t, 2H), 2.28 (t, 2H), 1.33-1.69
(m, 6H), 1.24 (s, 8H).
Step 2: 4-(9-Methoxycarbonyl nonylsulfanyl) benzoic acid tert-butyl
ester
4-(9-Methoxycarbonyl nonylsulfanyl) benzoic acid (4.4 g, 13 mmol)
was suspended in dry toluene (150 ml), under N.sub.2. The mixture
was refluxed and a solution of N,N-dimethylformamide di-tert-butyl
acetal (7.93 g, 39 mmol) in toluene (50 ml) was added over ca. 15
min. After refluxing 16 h, the reaction was allowed to cool and
some precipitation occured. TLC (1:2 AcOEt/heptane) indicated ca.
50% completion. The reaction was heated to 70.degree. C. and
another portion of N,N-dimethylformamide di-tert-butyl acetal (7.93
g, 39 mmol) in toluene (50 ml) was added over 1.5 h. After stirring
an additional hour at 70.degree. C., the sample was concentrated
under vacuum to yield an brown oil. Purification by flash
chromatography (15 cm.times.40 mm dia., 1:2 AcOEt/heptane) yielded
a yellow oil (3.65 g, 71%)
HPLC-MS (fast grad) m/z: 417 (M+23), R.sub.t=3.03 min.
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta. 7.88 (d, 2H), 7.26 (d,
2H), 3.66 (s, 3H), 2.96 (t, 2H), 2.30 (t, 2H), 1.60-1.75 (m, 4H),
1.59 (s, 9H), 1.43 (t-br, 2H), 1.29 (s, 8H).
Step 3: 4-(9-Carboxynonylsulfanyl) benzoic acid tert-butyl
ester
4-(9-Methoxycarbonyl nonylsulfanyl) benzoic acid tert-butyl ester
(2.46 g, 6.2 mmol) was dissolved in THF (25 ml). 1 N NaOH (6.2 ml,
6.2 mmol) was added and the mixture was stirred under N.sub.2 for 1
d. 1 N HCl (6.5 ml) diluted with water (100 ml) was added, and then
AcOEt (100 ml) was added. The organic phase was dried over
MgSO.sub.4 and concentrated under vacuum to yield a white solid
(2.5 g).
HPLC-MS (fast grad) m/z: 403 (M+23), R.sub.t=2.69 min.
.sup.1H-NMR (DMSO, 300 MHz) .delta. 11.99 (br, 1H), 7.79 (d, 2H),
7.36 (d, 2H), 3.03 (t, 2H), 2.18 (t, 2H), 1.60 (m, 2H), 1.53 (s,
9H), 1.32-1.51 (m, 4H), 1.24 (s, 8H).
Step 4: (S)-2-[10-(4-tert-Butoxycarbonylphenylsulfanyl)
decanoylamino]pentanedioic acid 5-benzyl ester 1-tert-butyl
ester4-(9-Carboxynonylsulfanyl) benzoic acid tert-butyl ester (1 g,
2.6 mmol) was dissolved in THF (10 ml), EDAC (0.53 g, 2.8 mmol),
HOBt (0.39 g, 2.9 mmol) and DIEA (1.0 g, 7.8 mmol) were added. The
solution was stirred under N.sub.2. A precipitate formed, and DMF
(10 ml) was added and a clear solution was obtained. After stirring
at rt for 30 min, H-Glu (OBzl)-OtBu (0.87 g, 2.6 mmol) was added.
The solution was stirred under N.sub.2 for 16 h at rt. The sample
was concentrated under vacuum. AcOEt (100 ml) was added, and the
solution was washed with water (50 ml), and 0.2 M HCl (2.times.50
ml), and dried over MgSO.sub.4, and concentrated under vacuum to
yield a light oil. Purification by flash chromatography (15
cm.times.40 mm dia., 1:2 AcOEt/heptane) yielded a colorless oil
(401+525 mg, 54% yield).
HPLC-MS (50-99) m/z: 656 (M+1), R.sub.t=2.44 min.
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta. 7.87 (d, 2H), 7.35 (s,
5H), 7.25 (d, 2H), 6.07 (d, 1H), 4.52 (m, 1H), 2.95 (t, 2H),
2.31-2.35 (m, 2H), 2.11-2.27 (m, 3H), 1.88-2.03 (m, 1H), 1.53-1.71
(m, 13H), 1.46 (s, 9H), 1.42 (m, 2H), 1.28 (m, 8H).
Step 5: (S)-2-[10-(4-tert-Butoxycarbonylphenylsulfanyl)
decanoylamino]pentanedioic acid 1-tert-butyl
ester(S)-2-[10-(4-tert-Butoxycarbonylphenylsulfanyl)decanoylamino]pentane-
dioic acid 5-benzyl ester 1-tert-butyl ester (385 mg, 0.587 mmol)
was dissolved in THF. 1 N NaOH (587 .mu.l, 0.587 mmol) was added
and the solution was stirred for 16 h at rt under N.sub.2. The
solvent had evaporated, so more THF (3 ml) was added. AcOEt (40 ml)
and dilute HCl (1 ml 1N HCl in 25 ml water) was added. The phases
were separated and the aqueous phase was extracted with AcOEt (15
ml). The organic phases were pooled and washed with sat. NaCl,
dried over MgSO.sub.4. The solution was concentrated under vacuum
to yield a light brown oil. The oil was purified by flash
chromatography (7.5 cm.times.40 mm dia., 20:20:1
AcOEt/heptane/AcOH) and after concentrating the appropriate
fractions under vacuum, toluene was added and removed under vacuum
a few times to remove residual AcOH to yield a colorless oil (160
mg, 48% yield).
HPLC-MS (50-99) m/z: 566 (M+1), R.sub.t=1.65 min.
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta. 7.87 (d, 2H), 7.26 (d,
2H), 6.25 (d, 1H), 4.52 (m, 1H), 2.96 (t, 2H), 2.38-2.47 (m, 2H),
2.12-2.30 (m, 3H), 1.82-1.99 (m, 1H), 1.60-1.75 (m, 4H), 1.58 (s,
9H), 1.47 (s, 9H), 1.36-1.45 (m, 2H), 1.28 (s, 8H).
Step 6: (S)-2-[10-(4-tert-Butoxycarbonylphenylsulfanyl)
decanoylamino]pentanedioic acid 5-tert-butyl ester
1-(2,5-dioxopyrrolidin-1-yll)
ester(S)-2-[10-(4-tert-Butoxycarbonylphenylsulfanyl)decanoylamino]pentane-
dioic acid 1-tert-butyl ester (156 mg, 0.276 mmol) was dissolved in
THF (3 ml). DIEA (47 .mu.l, 0.276 mmol) was added and the solution
was cooled to 0.degree. C. TSTU (99 mg, 0.276 mmol) was added and
the solution was stirred under nitrogen at 0.degree. C. for 30 min,
and then at rt for 16 h. The sample was concentrated under vacuum
and partitioned between AcOEt and 0.2 N HCl. The organic phase was
dried over MgSO.sub.4 and concentrated under vacuum to yield a
residue (194 mg).
HPLC-MS (50-99) m/z: 686 (M+23), R.sub.t=1.46 min.
.sup.1H-NMR (DMSO, 400 MHz) .delta. 8.12 (d, 1H), 7.79 (d, 2H),
7.36 (d, 2H), 4.16 (m, 1H), 3.03 (t, 2H), 2.81 (s, 4H), 2.61-2.78
(m, 4H), 2.10 (t, 2H), 1.99-2.07 (m, 1H), 1.80-1.94 (m, 1H),
1.42-1.66 (m, 11H), 1.38 (s, 9H), 1.24 (s, 8H). (singlet at 2.69,
ca. 2H possible impurity).
Step 7:
N.sup..epsilon.B29-10-(4-carboxyphenylsulfanyl)decanoyl-.gamma.-L--
glutamyl desB30 human insulin
General Coupling and Deprotection Method A:
Des-B30 insulin (125 mg, 0.022 mmol) was dissolved by adding 100 mM
Na.sub.2CO.sub.3 (1.5 ml) and acetonitrile (1.5 ml) in a 10 ml
round bottom-flask.
(S)-2-[10-(4-tert-Butoxycarbonylphenylsulfanyl)decanoylamino]pentanedioic
acid 5-tert-butyl ester 1-(2,5-dioxopyrrolidin-1-yll) ester (14.5
mg, 0.022 mmol) was added in acetonitrile (750 ul) and
Na.sub.2CO.sub.3 (750 ul) was added so the final solution was 50:50
100 mM Na.sub.2CO.sub.3/acetonitrile. The solution was stirred at
rt for 1 h. The solution was transferred to a 15 ml centrifuge
tube, washing with Milli-Q water (6 ml). The solution was cooled on
ice, and the pH was adjusted to 5.1 by adding 1N HCl, which lead to
precipitation. The tube was centrifuged at 5000 rpm for 10 min at
10.degree. C. The solvent was decanted from the solid. 95:5
TFA/water (2.5 ml) was added to the solid. The solution was poured
into a flask, washing with more 95:5 TFA/water (2.5 ml). The
solution was stirred for 30 min at rt, and concentrated under
vacuum. DCM was added and removed twice, and the flask was dried
under vacuum at rt. The product was purified by preparative HPLC (2
cm dia. C.sub.18 column, acetonitrile/water/0.05% TFA). The
relevant fractions were pooled (two batches) and diluted 1:1 with
water. The solutions were cooled on ice, and precipitation was
induced by adjusting the pH to ca. 5 with 1 N NaOH. The samples
were centrifuged (5000 rpm, 10 min, 5.degree. C.). The liquid was
decanted off and the pellets were lyophilized to yield a white
solid (30 mg+5 mg).
HPLC-MS (Sciex) m/z: 1536.7 (M/4+1=1536.5), R.sub.t=3.2 min.
HPLC (neutral) R.sub.t=5.60 min.
Example 24
N.sup..epsilon.B29-11-(4-carboxyphenylsulfanyl)undecanoyl-.gamma.-L-glutam-
yl desB30 human insulin
##STR00075## The following steps in the synthesis of
N.sup..epsilon.B29-11-(4-carboxyphenylsulfanyl)undecanoyl-.gamma.-L-gluta-
myl desB30 human insulin were performed in a similar fashion as
those described for
N.sup..epsilon.B29-10-(4-carboxyphenylsulfanyl)decanoyl-.gamma.-L-glutamy-
l desB30 human insulin.
Step 1: 4-(10-Methoxycarbonyldecylsulfanyl)benzoic acid
HPLC-MS (fast grad) m/z: 375 (M+23), R.sub.t=2.44 min.
.sup.1H-NMR (DMSO, 300 MHz) .delta. 12.85 (br, 1H), 7.83 (d, 2H),
7.36 (d, 2H), 3.57 (s, 3H), 3.03 (t, 2H), 2.28 (t, 2H), 1.60 (m,
2H), 1.58 (m, 2H), 1.40 (m, 2H), 1.23 (s, 10H).
Step 2: 4-(10-Methoxycarbonyldecylsulfanyl)benzoic acid tert-butyl
ester
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta. 7.87 (d, 2H), 7.26 (d,
2H), 3.67 (s, 3H), 2.96 (t, 2H), 2.30 (t, 2H), 1.57-1.75 (m, 13H),
1.45 (m, 2H), 1.28 (s, 10H).
Step 3: 4-(10-Carboxydecylsulfanyl)benzoic acid tert-butyl
ester
HPLC-MS (50-99) m/z: 417 (M+23), R.sub.t=1.82 min.
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta. 7.87 (d, 2H), 7.26 (d,
2H), 2.96 (t, 2H), 2.35 (t, 2H), 1.55-1.74 (m, 13H), 1.43 (m, 2H),
1.28 (s, 10H).
Step 4:
(S)-2-[11-(4-tert-Butoxycarbonylphenylsulfanyl)undecanoylamino]pen-
tanedioic acid 5-benzyl ester 1-tert-butyl ester
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta. 7.86 (d, 2H), 7.35 (s,
5H), 7.26 (d, 2H), 6.06 (d, 1H), 5.11 (s, 2H), 4.52 (m, 1H), 2.96
(t, 2H), 2.39 (m, 2H), 2.11-2.28 (m, 3H), 1.88-2.06 (m, 1H),
1.60-1.73 (m, 4H), 1.58 (s, 9H), 1.46 (s, 9H), 1.35-1.43 (m, 2H),
1.26 (s, 10H).
Step 5:
(S)-2-[11-(4-tert-Butoxycarbonylphenylsulfanyl)undecanoylamino]pen-
tanedioic acid 1-tert-butyl ester
HPLC-MS (50-99) m/z: 602 (M+23), R.sub.t=1.80 min.
.sup.1H-NMR (CDCl.sub.3, 400 MHz) .delta. 7.87 (d, 2H), 7.26 (d,
2H), 6.25 (d, 1H), 4.52 (m, 1H), 2.96 (t, 2H), 2.40 (m, 2H),
2.14-2.31 (m, 3H), 1.80-1.98 (m, 1H), 1.60-1.75 (m, 4H), 1.58 (s,
9H), 1.47 (s, 9H), 1.36-1.45 (m, 2H), 1.26 (s, 10H).
Step 6:
(S)-2-[11-(4-tert-Butoxycarbonylphenylsulfanyl)undecanoylamino]pen-
tanedioic acid 5-tert-butyl ester 1-(2,5-dioxo-pyrrolidin-1-yl)
ester
HPLC-MS (50-99) m/z: 699 (M+23), R=2.05 min.
.sup.1H-NMR (CDCl.sub.3, 400 MHz) .delta. 7.87 (d, 2H), 7.26 (d,
2H), 6.19 (d, 1H), 4.60 (m, 1H), 2.96 (t, 2H), 2.84 (s, 4H),
2.68-2.78 (m, 1H), 2.56-2.67 (m, 1H), 2.27-2.39 (m, 1H), 2.22 (t,
2H), 2.01-2.14 (m, 1H), 1.59-1.75 (m, 4H), 1.58 (s, 9H), 1.48 (s,
9H), 1.37-1.46 (m, 2H), 1.28 (s, 10H).
Step 7: B29N(eps)-11-(4-carboxy-phenylsulfanyl)undecanoyl gamma-Glu
desB30 insulin
HPLC-MS (Sciex) m/z: 1539.8 (M/4+1=1540) Rt: 3.5 min.
HPLC (neutral) R.sub.t=5.93.
Example 25
N.sup..epsilon.B29-10-(4-Carboxyphenoxy)decanoyl beta-Asp desB30
insulin
##STR00076##
Step 1: 4-(9-Methoxycarbonylnonyloxy)benzoic acid tert-butyl ester
4-Hydroxybenzoic acid tert-butyl ester (500 mg, 2.57 mmol) and
10-bromodecanoic acid methyl ester (683 mg, 2.57 mmol) were
dissolved in acetonitrile, and K.sub.2CO.sub.3 was added. The
mixture was refluxed under nitrogen for 16 h. The solids were
filtered off, and the filtrate was concentrated under vacuum. The
residue was dissolved in AcOEt (50 ml) and water (25 ml). The
phases were separated and the organic phase was dried over
MgSO.sub.4 and concentrated to yield a colorless oil (874 mg, 90%
yield).
HPLC-MS (50-99) m/z: 402 (M+23), R.sub.t=1.65 min.
.sup.1H-NMR (CDCl.sub.3, 400 MHz) .delta.7.92 (d, 2H), 6.87 (d,
2H), 3.99 (t, 2H), 3.67 (s, 3H), 2.31 (t, 2H), 1.78 (m, 2H), 1.62
(m, 2H), 1.58 (s, 9H), 1.45 (m, 2H), 1.31 (s, 8H).
Step 2: 4-(9-Carboxynonyloxy)benzoic acid tert-butyl
ester4-(9-Methoxycarbonylnonyloxy)benzoic acid tert-butyl ester
(858 mg, 2.27 mmol) was dissolved in THF (5 ml). 1 N NaOH (2.27 ml)
was added and the mixture was covered lightly with a rubber septum,
and stirred for 16 h at rt. AcOEt (40 ml) and 1.05 eq 1N HCl in
water (25 ml) were added. The phases were separated, and the
organic phase was dried over MgSO.sub.4, and concentrated under
vacuum to yield a white solid (781 mg, 95% yield).
HPLC-MS (50-99) m/z: 387 (M+23), R.sub.t=1.46 min.
.sup.1H-NMR (CDCl.sub.3, 400 MHz) .delta. 7.92 (d, 2H), 6.87 (d,
2H), 3.99 (t, 2H), 2.35 (t, 2H), 1.75 (m, 2H), 1.64 (m, 2H), 1.58
(s, 9H), 1.45 (m, 2H), 1.32 (s, 8H).
Step 3: 4-[9-(2,5-Dioxopyrrolidin-1-yloxycarbonyl)nonyloxy]benzoic
acid tert-butyl ester4-(9-Carboxynonyloxy)benzoic acid tert-butyl
ester (779 mg, 2.14 mmol) was dissolved in THF (15 ml), and DIEA
(366 .mu.l, 2.14 mmol) was added. The solution was cooled to
0.degree. C., and placed under nitrogen. TSTU (768 mg, 2.14 mmol)
was added. The solution was stirred at 0.degree. C. for 30 min then
at rt for 16 h. The sample was concentrated under vacuum. AcOEt (40
ml) was added, and the solution was washed with 0.2 N HCl
(2.times.25 ml), dried over MgSO.sub.4, and concentrated under
vacuum to yield a yellowish solid. The solid was recrystallized
from AcOEt to yield a white powder (276 mg, 28%).
HPLC-MS (50-99) m/z: 484 (M+23), R.sub.t=1.71 min.
.sup.1H-NMR (CDCl.sub.3, 400 MHz) .delta. 7.92 (d, 2H), 6.87 (d,
2H), 3.99 (t, 2H), 2.83 (s, 4H), 2.61 (t, 2H), 1.67-1.88 (m, 4H),
1.58 (s, 9H), 1.27-1.52 (m, 10H).
Step 4:
(S)-2-[10-(4-tert-butoxycarbonylphenoxy)decanoylamino]succinic acid
1-tert-butyl
ester4-[9-(2,5-Dioxopyrrolidin-1-yloxycarbonyl)nonyloxy]benzoic
acid tert-butyl ester (264 mg, 0.57 mmol) was dissolved in DMF (2.5
ml). H-Asp-OtBu was added, and more DMF (2.5 ml). After 1 h DIEA (1
eq., 98 ul) was added, and after 30 min more, DMF (5 ml) was added.
There was still a lot of undissolved solids. After 1 d at rt the
solvent was removed under vacuum. AcOEt (40 ml) was added and the
solution was washed with 0.2 N HCl (2.times.25 ml), dried over
MgSO.sub.4 and concentrated under vacuum to yield an opaque oil
(283 mg, 92% yield).
HPLC-MS (50-99) m/z: 558 (M+23), R.sub.t=1.57 min.
.sup.1H-NMR (DMSO, 300 MHz) .delta. 12.40 (br, 1H), 8.14 (d, 1H),
7.82, (d, 2H), 6.99 (d, 2H), 4.44 (q, 1H), 4.02 (t, 2H), 2.52-2.92
(m, 2H), 2.08 (t, 2H), 1.71 (t, 2H), 1.20-1.55 (m, 28H).
Step 5:
(S)-2-[10-(4-tert-Butoxycarbonylphenoxy)decanoylamino]succinic acid
4-tert-butyl ester 1-(2,5-dioxopyrrolidin-1-yl)
ester(S)-2-[10-(4-tert-butoxycarbonylphenoxy)decanoylamino]
succinic acid 1-tert-butyl ester (261 mg, 0.49 mmol) was dissolved
in THF (5 ml). The solution was cooled to 0.degree. C., and DIEA
(100 .mu.l, 0.59 mmol) and TSTU (175 mg, 0.49 mmol) were added. The
mixture was stirred for 16 h in a small ice bath, such that it
could warm to RT after ca. 1 h. The sample was concentrated under
vacuum. AcOEt (40 ml) was added, and the solution was washed with
0.2 N HCl (2.times.25 ml), dried over MgSO.sub.4, and concentrated
under vacuum to yield a colorless oil containing some white solid.
The product was purified by flash chromatography (35 g silica, 400
ml 1:1 AcOEt/heptane and 100 ml 7:3 AcOEt/heptane) to yield a white
solid (200 mg, 65% yield).
HPLC-MS (Sciex) m/z: 633 (M+1), R.sub.t=6.09 min.
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta. 7.91 (d, 2H), 6.87 (d,
2H), 6.51 (d, 1H), 4.83 (m, 1H), 3.99 (t, 2H), 3.24 (m, 2H), 2.83
(s, 4H), 2.25 (t, 2H), 1.78 (m, 2H), 1.62-1.70 (m, 2H), 1.58 (s,
9H), 1.47 (s, 9H), 1.36-1.46 (m, 2H), 1.31 (s, 8H).
Step 6: N.sup..epsilon.B29-10-(4-Carboxyphenoxy)decanoyl beta-Asp
desB30 insulin
The compound was prepared using the General Coupling and
Deprotection
Method A to yield a white solid (26 mg and 8 mg).
HPLC-MS (Sciex) m/z: 1529.3 (M/4+1=1529), Rt=3.4 min.
HPLC (neutral) R.sub.t=5.31 min.
Example 26
N.sup..epsilon.B29-11-(4-Carboxy-phenoxy) undecanoyl
.gamma.-L-glutamyl desB30 insulin
##STR00077## The following steps in the synthesis of
N.sup..epsilon.B29-11-(4-Carboxyphenoxy) undecanoyl
.gamma.-L-glutamyl desB30 insulin were performed in a similar
fashion as those described for
N.sup..epsilon.B29-10-(4-Carboxyphenoxy)decanoyl beta-Asp desB30
insulin.
Step 1: 4-(10-Methoxycarbonyldecyloxy)benzoic acid tert-butyl
ester
HPLC-MS (50-99) m/z: 415 (M+23), R.sub.t=2.31 min.
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta. 7.92 (d, 2H), 6.87 (d,
2H), 3.99 (t, 2H), 3.67 (s, 2.30 (t, 2H), 1.79 (m, 2H), 1.62 (m,
2H), 1.58 (s, 9H), 1.43 (m, 2H), 1.30 (s, 10H).
Step 2: 4-(10-Carboxydecyloxy)benzoic acid tert-butyl ester
HPLC-MS (fast grad) m/z: 401 (M+23), R.sub.t=2.71 min.
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta. 7.92 (d, 2H), 6.87 (d,
2H), 3.98 (t, 2H), 2.34 (t, 2H), 1.78 (m, 2H), 1.62 (m, 2H), 1.58
(s, 9H), 1.44 (m, 2H), 1.30 (s, 10H).
Step 3: 4-[10-(2,5-Dioxopyrrolidin-1-yloxycarbonyl)decyloxy]benzoic
acid tert-butyl ester
HPLC-MS (50-99) m/z: 498 (M+23), R.sub.t=1.89 min.
.sup.1H-NMR (CDCl.sub.3, 400 MHz) .delta. 7.92 (d, 2H), 6.88 (d,
2H), 3.99 (t, 2H), 2.84 (s, 4H), 2.60 (t, 2H), 1.66-1.90 (m, 4H),
1.58 (s, 9H), 1.43 (m, 2H), 1.32 (s, 10H).
Step 4:
(S)-2-[11-(4-tert-Butoxycarbonylphenoxy)undecanoylamino]pentanedio-
ic acid 1-tert-butyl ester
HPLC-MS (50-99) m/z: 564 (M+1), R.sub.t=1.68 min.
.sup.1H-NMR (CDCl.sub.3, 400 MHz) .delta. 7.92 (d, 2H), 6.87 (d,
2H), 4.50 (br, 1H), 3.98 (t, 2H), 2.38 (br, 2H), 2.24 (t, 2H),
2.04-2.20 (br, 1H), 1.82-1.98 (br, 1H), 1.69-1.82 (m, 2H),
1.59-1.67 (m, 2H), 1.57 (s, 9H), 1.38-1.50 (m, 11H), 1.29 (s,
10H).
Step 5:
(S)-2-[11-(4-tert-Butoxycarbonylphenoxy)undecanoylamino]pentanedio-
ic acid 1-tert-butyl ester 5-(2,5-dioxopyrrolidin-1-yl) ester
HPLC-MS (50-99) m/z: 683 (M+23), R.sub.t=1.91 min.
.sup.1H-NMR (CDCl.sub.3, 300 MHz) .delta. 7.92 (d, 2H), 6.87 (d,
2H), 6.20 (d, 1H), 4.60 (m, 1H), 3.99 (t, 2H), 2.84 (s, 4H),
2.54-2.80 (m, 2H), 2.26-2.42 (m, 1H), 2.22 (t, 2H), 2.04-2.15 (m,
1H), 1.72-1.88 (m, 2H), 1.60-1.70 (m, 2H), 1.58 (s, 9H), 1.48 (s,
9H), 1.39-1.46 (m, 2H), 1.30 (s, 10H).
Step 6: N.sup..epsilon.B29-11-(4-Carboxy-phenoxy)undecanoyl
.gamma.-L-glutamyl desB30 insulin
HPLC-MS (Sciex) m/z: 1536.4 (M/4+1=1536.0), R.sub.t=3.92 min.
HPLC (neutral) R.sub.t=5.18 min.
Example 27
Insulin Receptor Binding of the Insulin Derivatives of the
Invention
The affinity of the insulin derivatives of the invention for the
human insulin receptor was determined by a SPA assay (Scintillation
Proximity Assay) microtiterplate antibody capture assay. SPA-PVT
antibody-binding beads, anti-mouse reagent (Amersham Biosciences,
Cat No. PRNQ0017) were mixed with 25 ml of binding buffer (100 mM
HEPES pH 7.8; 100 mM sodium chloride, 10 mM MgSO.sub.4, 0.025%
Tween-20). Reagent mix for a single Packard Optiplate (Packard No.
6005190) is composed of 2.4 .mu.l of a 1:5000 diluted purified
recombinant human insulin receptor--exon 11, an amount of a stock
solution of A14 Tyr[.sup.125I]-human insulin corresponding to 5000
cpm per 100 .mu.l of reagent mix, 12 .mu.l of a 1:1000 dilution of
F12 antibody, 3 ml of SPA-beads and binding buffer to a total of 12
ml. A total of 100 .mu.l was then added and a dilution series is
made from appropriate samples. To the dilution series was then
added 100 .mu.l of reagent mix and the samples were incubated for
16 hours while gently shaken. The phases were the then separated by
centrifugation for 1 min and the plates counted in a Topcounter.
The binding data were fitted using the nonlinear regression
algorithm in the GraphPad Prism 2.01 (GraphPad Software, San Diego,
Calif.).
TABLE-US-00002 Receptor binding (% of Product human insulin) Human
insulin 100
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-CH.sub-
.2- 18 para-C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.13CO)--N-(carboxyethyl)-CH.sub-
.2- 28 para-C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxymethyl)-
17 para-C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-CH.sub-
.2- 11 ortho-C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)-.gamma.-Glutamyl-N--CH.s-
ub.2- 14 para-C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29-(3-Carboxy-5-hexadecandioylamino- 12
benzoyl)desB30 insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.16CO)--N-(carboxyethyl)-CH.sub-
.2- 15 para-C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29- [(5-{[(2-Carboxyethyl)- (15- 13
carboxypentadecanoyl)amino]methyl}furan-2- carbonyl)desB30 human
insulin N.sup..epsilon.B29-(3-Carboxy-5-octadecandioylamino- 19
benzoyl) des(B30) human insulin
N.sup..epsilon.B29-{4-Carboxy-4-[10-(4-carboxy-phenoxy)- 46
decanoylamino]-butyryl}desB30 human insulin
N.sup..epsilon.B29-10-(4-carboxy-phenylsulfanyl)
decanoyl-.gamma.-L- 101 glutamyl desB30 insulin
N.sup..epsilon.B29-10-(4-Carboxyphenoxy) decanoyl beta- 42 Asp
desB30 insulin N.sup..epsilon.B29-11-(4-Carboxy-phenoxy)
tuldecanoyl-.gamma.-L- 55 glutamyl desB30 insulin
Example 28
Preparation of Monoclonal mIR Antibodies
Specific antibodies (F12) were produced by monoclonal technique:
RBF mice were immunized by injecting 50 .mu.g of purified mIR in
FCA subcutaneously followed by two injections with 20 .mu.g of mIR
in FIA. Highresponder mice were boosted intravenously with 25 .mu.g
of mIR and the spleens were harvested after 3 days. Spleen cells
were fused with the myeloma Fox cell line (Kohler, G & Milstein
C. (1976), European J. Immunology, 6:511-19; Taggart R T et al
(1983), Science 219:1228-30). Supernatants were screened for
antibody production in a mIR specific ELISA. Positive wells were
cloned and tested in Western blotting.
Example 29
Hydrophobicity Data on Insulin Derivatives According to the
Invention
The hydrophobicity (hydrophobic index) of the insulin derivatives
of the invention relative to human insulin, k'.sub.rel, were
measured on a LiChrosorb RP18 (5 .mu.m, 250.times.4 mm) HPLC column
by isocratic elution at 40.degree. C. using mixtures of A) 0.1 M
sodium phosphate buffer, pH 7.3, containing 10% acetonitrile, and
B) 50% acetonitrile in water as eluents. The elution was monitored
by following the UV absorption of the eluate at 214 nm. Void time,
t.sub.0, was found by injecting 0.1 mM sodium nitrate. Retention
time for human insulin, t.sub.human, was adjusted to at least
2t.sub.0 by varying the ratio between the A and B solutions.
k'.sub.rel=(t.sub.denvative-t.sub.0)/(t.sub.human-t.sub.0).
k'.sub.rel. found for a number of insulin derivatives according to
the invention.
Data on receptor binding and hydrophobicity data of insulin
derivatives according to the present invention are shown in the
following tables:
TABLE-US-00003 Insulin derivative k'.sub.rel
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-CH.sub-
.2-para- 1.19 C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.13CO)--N-(carboxyethyl)-CH.sub-
.2-para- 0.81 C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxymethyl)-para--
1.08 C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)-.gamma.-Glu-N-CH.sub.2-p-
ara-C.sub.6H.sub.4CO] 1.12 desB30 human insulin
N.sup..epsilon.B29-(3-Carboxy-5-hexadecandioylamino-benzoyl)desB30
insulin 1.7
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.15CO)--N-(carboxyethyl)-CH.sub-
.2-para- 1.23 C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.16CO--N-(carboxyethyl)-CH.sub.-
2-para- 2.03 C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29-[(5-{[(2-Carboxyethyl)-(15-carboxypentadecanoyl)-
1.19 amino]methyl}furan-2-carbonyl)desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-CH.sub-
.2-meta 1.63 C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-CH.sub-
.2-ortho 0.905 C.sub.6H.sub.4CO] desB30 human insulin
N.sup..epsilon.B29--[N--(HOOC(CH.sub.2).sub.14CO)--N-(carboxyethyl)-para-C-
.sub.6H.sub.4CO] 1.08 desB30 human insulin
N.sup..epsilon.B29-(3-Carboxy-5-octadecandioylamino-benzoyl)
des(B30) human 2.97 insulin
N.sup..epsilon.B29-(3-Carboxy-4-(14-carboxy-tetradecyloxy)-benzoyl)
desB30 1.51 human insulin
N.sup..epsilon.B29-(3-Carboxy-5-(14-carboxy-tetradecyloxy)-benzoyl)
desB30 1.175 human insulin
N.sup..epsilon.B29-{4-Carboxy-4-[10-(4-carboxy-phenoxy)-decanoylamino]-
0.- 388 butyryl}desB30 human insulin
N.sup..epsilon.B29-[3-Carboxy-5-(octadecandioyl-N-carboxyethyl-glycin)amin-
o- 0.662 benzoyl] desB30 human insulin
N.sup..epsilon.B29{3-[(3,5-Bis-carboxymethoxy-benzyl)-(15-carboxy-
0.45 pentadecanoyl)-amino]-propionyl desB30 human insulin
N.sup..epsilon.B29-3-[4'-(2
Carboxy-ethyl)-biphenyl-4-yl]-propionyl-.gamma.-L- 0.276 glutamyl
desB30 insulin
N.sup..epsilon.B29-hexadecandioyl-(4-aminomethyl-benzoyl)-.gamma.-L-glutam-
yl 1.18 desB30 human insulin
N.sup..epsilon.B29-4-{[(2-Carboxyethyl)-(15-carboxypentadecanoyl)amino]-
0- .399 methyl}benzoyl)-.gamma.-L-glutamyl desB30 human insulin
N.sup..epsilon.B29-{4-[2-(4-carboxymethyl-phenyl)-ethyl]-phenyl}-acetyl-.g-
amma.-L- 0.291 glutamyl desB30 human insulin
N.sup..epsilon.B29-(3-carboxy-4-hexdecandioylamino-benzoyl)
desB30-insulin 1.075
N.sup..epsilon.B29-10-(4-carboxy-phenylsulfanyl)
decanoyl-.gamma.-L-glutamyl desB30 0.475 human insulin
N.sup..epsilon.B29-10-(4-Carboxyphenoxy) decanoyl beta-Asp desB30
insulin 0.348 N.sup..epsilon.B29-11-(4-Carboxy-phenoxy)
undecanoyl-.gamma.-L-glutamyl desB30 0.482 human insulin
* * * * *