[EN] 4- (5-CYANO-PYRAZOL-1-YL) -PIPERIDINE DERIVATIVES AS GPR 119 MODULATORS [FR] DÉRIVÉS DE 4-(5-CYANOPYRAZOL-1-YL)PIPÉRIDINE EN TANT QUE MODULATEURS DU GPR119
[EN] L- ( PIPERIDIN-4-YL) -PYRAZOLE DERIVATIVES AS GPR 119 MODULATORS<br/>[FR] DERIVES DE L-(PIPERIDIN-4-YL)-PYRAZOLE UTILISES EN TANT QUE MODULATEURS DU GPR 119
申请人:PFIZER
公开号:WO2010140092A1
公开(公告)日:2010-12-09
Compounds of Formula I that modulate the activity of the G-protein-coupled receptor GPR119 and their uses in the treatment of diseases linked to the modulation of the G-protein-coupled receptor GPR119 in animals are described herein.
An environmentallyfriendlymethod was established for the N‐methylation of the 5‐substituted 1H‐tetrazoles with a greenreagent: DMC. DABCO was the optimal catalyst, and hazardous chemicals were avoided in this protocol. A plausible catalytic mechanism is proposed, which consists of a DABCO‐activated process and a thermally induced rearrangement of tetrazole carbamates.
A glucokinase activator is provided; and a remedy and/or a preventive for diabetes, or a remedy and/or a preventive for diabetes such as retinopathy, nephropathy, neurosis, ischemic cardiopathy, arteriosclerosis, and further a remedy and/or a preventive for obesity are provided.
A glucokinase activator characterized by containing a 2-heteroaryl-substituted benzimidazole derivative of a general formula (I-0) or its pharmaceutically-acceptable salt:
[in the formula, X represents a carbon atom or a nitrogen atom;
X
1
, X
2
, X
3
and X
4
each independently represent a carbon atom or a nitrogen atom; the ring A represents a 5- or 6-membered nitrogen-containing aromatic hetero ring of a formula (II):
(in the formula, X represents a carbon atom or a nitrogen atom); R
1
represents an aryl, etc.; R
2
represents a hydroxy, etc.; R
3
represents a —C
1-6
alkyl, etc.; R
4
represents a —C
1-6
alkyl, etc.; X
5
represents —O—, etc.; a indicates an integer of 1, 2 or 3; q indicates an integer of from 0 to 2; m indicates an integer of from 0 to 2].
Compounds of Formula I that modulate the activity of the G-protein-coupled receptor GPR119 and their uses in the treatment of diseases linked to the modulation of the G-protein-coupled receptor GPR119 in animals are described herein.
tetrazole (1,5-Tz) in several cases. The regioselectivities (1,5-Tz:2,5-Tz) are highly variable and cannot be exclusively attributed to the steric hindrance of the electrophile. A new rationale to explain the observed regioselectivity, based on the difference in mechanism between first- and second-order nucleophilic substitutions, is thus proposed. In addition, in some cases the intramolecular stabilization
二取代四唑的合成描述了从 1 H -5-单取代四唑通过脂族胺重氮化反应,形成瞬时烷基重氮中间体,充当烷基化剂。尽管 2,5-二取代四唑 (2,5-Tz) 以中等至极好的收率优先形成,但在几种情况下也可以分离出少量的 1,5-二取代四唑 (1,5-Tz)。区域选择性(1,5-Tz:2,5-Tz)是高度可变的,不能完全归因于亲电试剂的空间位阻。因此,基于一级和二级亲核取代之间的机制差异,提出了解释观察到的区域选择性的新原理。此外,在某些情况下,所得重氮的分子内稳定性会影响区域选择性。