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Dipeptidyl peptidase inhibitors

a technology of peptide inhibitors and peptides, which is applied in the field of dipeptidyl peptidase inhibitors, can solve the problems of short half-life of glp-1 (7-36), infertility and amenorrhea, and rapid degradation of glp-1 in vivo

Inactive Publication Date: 2005-03-24
TAKEDA PHARMA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

It is further noted that prodrugs may also be administered which are altered in vivo and become a compound according to the present invention. The various methods of using the compounds of the present invention are intended, regardless of whether prodrug delivery is specified, to encompass the administration of a prodrug that is converted in vivo to a compound according to the present invention. It is also noted that certain compounds of the present invention may be altered in vivo prior to inhibiting DPP-IV and thus may themselves be prodrugs for another compound. Such prodrugs of another compound may or may not themselves independently have DPP-IV inhibitory activity.

Problems solved by technology

Unfortunately, GLP-1 (7-36) is degraded rapidly in vivo and has been shown to have a short half-life in vivo (t½=1.5 minutes).
It results in infertility and amenorrhea.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1a

5-Bromo-2-chloro-3H-pyrimidin-4-one

5-Bromo-2,4-dichloro-pyrimidine (5.0 g, 22 mmol) was stirred in THF (10 mL) with 1N NaOH (30 mL) at r.t. for 3 h. The solution was made slightly acidic with 1N HCl and was extracted with CHCl3. Organics were dried (MgSO4) and concentrated in vacuo. Precipitation from 20% CHCl3 / hexanes and collection by filtration gave 2.92 g (64%) of 5-bromo-2-chloro-3H-pyrimidin-4-one as a white solid. 1H NMR (400 MHz, DMSO-d6): δ 13.33 (br s, 1H), 8.35 (s, 1H). MS (ES) [m+H] calc'd for C4H2N2OBrCl, 209, 211, 213; found 209, 211, 213.

example 1b

2-(5-Bromo-2-chloro-6-oxo-6H-pyrimidin-1-ylmethyl)-benzonitrile

5-Bromo-2-chloro-3H-pyrimidin-4-one (1.88 g, 9.0 mmol) was stirred in DME (25 mL) / DMF (5 niL) under nitrogen at 0° C. Sodium hydride (95%, 238 mg, 9.4 mmol) was added in portions. After 10 min, lithium bromide (1.56 g, 17.9 mmol) was added and the reaction stirred for 15 min at r.t. α-Bromo-o-tolunitrile (3.5 g, 17.9 mmol) was added, and the reaction stirred at 65° C. for 8 h. The solution was diluted with EtOAc, washed with brine, dried (MgSO4) and concentrated in vacuo. Purification by silica gel chromatography (1:1:1 EtOAc / hexanes / CHCl3) gave 997 mg (34%) of 2-(5-bromo-2-chloro-6-oxo-6H-pyrimidin-1-ylmethyl)-benzonitrile as a white solid. 1H NMR (400 MHz, CDCl3): δ 8.11 (s, 1H), 7.73 (dd, 1H, J=7.6, 1.2 Hz), 7.58 (dt, 1H, J=7.6, 1.2 Hz), 7.45 (t, 1H, J=7.6 Hz), 7.16 (d, 1H, J=7.6 Hz), 5.69 (s, 2H). MS (ES) [m+H] calc'd for C12H7N3OBrCl, 324, 326, 328; found 324, 326, 328.

Also obtained from the reaction were impure...

example 1

2-[2-(3-(R)-Amino-piperidin-1-yl)-5-bromo-6-oxo-6H-pyrimidin-1-ylmethyl]-benzonitrile, TFA salt

2-(5-Bromo-2-chloro-6-oxo-6H-pyrimidin-1-ylmethyl)-benzonitrile (189 mg, 0.58 mmol), (R)-3-amino-piperidine, dihydrochloride (128 mg, 0.74 mmol) and sodium bicarbonate (195 mg, 2.32 mmol) were stirred in ethanol (5 mL) at 60° C. for 90 min. The reaction was diluted with EtOAc, washed with water and brine, dried (MgSO4), and concentrated in vacuo. Purification by silica gel chromatography (5% MeOH / CHCl3) gave 139 mg (62%) of the title compound as a clear oil. This was converted to the solid TFA salt by subjection to TFA in CH2Cl2 and concentration in vacuo. 1H NMR (400 MHz, DMSO-d6): δ 8.18 (s, 1H), 7.98 (br s, 3H), 7.82 (d, 1H, J=6.8 Hz), 7.64 (dt, 1H, J=7.6, 1.2 Hz), 7.47 (t, 1H, J=7.2 Hz), 7.27 (d, 1H, J=7.6 Hz), 5.29 (AB q, 2H, J=42.8, 15.2 Hz), 3.52-3.57 (m, 1H), 3.30-3.39 (m, 1H), 3.15-3.24 (m, 1H), 2.88-3.05 (m, 2H), 1.90-1.99 (m, 1H), 1.75-1.83 (m, 1H), 1.49-1.63 (m, 2H). MS (ES) ...

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Abstract

Compounds, pharmaceuticals, kits and methods are provided for use with DPP-IV inhibitors comprising Formula I: wherein the substituents are as described herein.

Description

FIELD OF THE INVENTION The invention relates to compounds that may be used to inhibit dipeptidyl peptidases as well as compositions of matter and kits comprising these compounds. The present invention also relates to methods for inhibiting dipeptidyl peptidases as well as treatment methods using compounds according to the present invention. DESCRIPTION OF RELATED ART Dipeptidyl Peptidase IV (IUBMB Enzyme Nomenclature EC.3.4.14.5) is a type II membrane protein that has been referred to in the literature by a wide a variety of names including DPP4, DP4, DAP-IV, FAPβ, adenosine deaminase complexing protein 2, adenosine deaminase binding protein (ADAbp), dipeptidyl aminopeptidase IV; Xaa-Pro-dipeptidyl-aminopeptidase; Gly-Pro naphthylamidase; postproline dipeptidyl aminopeptidase IV; lymphocyte antigen CD26; glycoprotein GP110; dipeptidyl peptidase IV; glycylproline aminopeptidase; glycylproline aminopeptidase; X-prolyl dipeptidyl aminopeptidase; pep X; leukocyte antigen CD26; glycylp...

Claims

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Application Information

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IPC IPC(8): A61K9/08A61K9/20A61K31/506A61P3/10A61P7/00A61P13/12A61P17/06A61P19/00A61P19/02A61P25/00A61P31/04A61P31/18A61P35/00A61P37/00A61P37/06A61P43/00C07D239/02C07D239/36C07D239/46C07D239/52C07D285/16C07D401/04C07D401/14C07D405/04C07D405/14C07D409/06C07D409/14C07D417/04
CPCC07D239/36C07D239/47C07D239/52C07D401/04C07D417/04C07D405/14C07D409/06C07D409/14C07D401/14A61P13/12A61P17/06A61P19/00A61P19/02A61P25/00A61P3/10A61P31/04A61P31/18A61P35/00A61P37/00A61P37/06A61P43/00A61P7/00
Inventor FENG, JUNGWALTNEY, STEPHEN L. IIKALDOR, STEPHEN W.STAFFORD, JEFFREY A.WALLACE, MICHAEL B.ZHANG, ZHIYUAN
Owner TAKEDA PHARMA CO LTD
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