A systematic study of the N-substitution reactions of 3-substituted pyrazoles under basic conditions has been undertaken. Regioselective N1-alkylation, -arylation, and -heteroarylation of 3-substituted pyrazoles have been achieved using K2CO3-DMSO. The regioselectivity is justified by the DFT calculations at the B3LYP/6-31G**(d) level. A consistent steric effect on chemical shift has been observed
对3-取代的吡唑在碱性条件下的N-取代反应进行了系统的研究。使用K 2 CO 3 -DMSO已经实现了3-取代的吡唑的区域选择性N1-烷基化,-芳基化和-杂芳基化。通过在B3LYP / 6-31G **(d)水平上的DFT计算可以证明区域选择性。对于N-烷基吡唑类似物,已经观察到对化学位移的一致的空间效应。已获得二十五个X射线晶体学结构,以确认主要产品的区域化学。
Pyrazoles as glucokinase activators
申请人:F. Hoffmann-La Roche AG
公开号:EP2261216A2
公开(公告)日:2010-12-15
Disclosed herein are pyrazole glucokinase activators of the formula (I)
wherein R1 to R4 are as defined in the specification and claims, useful for the treatment of metabolic diseases and disorders, preferably diabetes mellitus.
NEW 5,8-DIMETHYL-9-PHENYL-5,8-DIHYDRO-6H-PYRAZOLO[3,4-H]QUINAZOLIN-2-YL)-(1H-PYRAZOL-3-YL)-AMINES AND DERIVATIVES AS IGF-1R/IR INHIBITORS
申请人:Boehringer Ingelheim International GmbH
公开号:US20180141948A1
公开(公告)日:2018-05-24
The present invention encompasses compounds of formula (I) wherein the groups A, R and q are defined in claim
1
, their use as inhibitors of IGF-1 R, pharmaceutical compositions which contain compounds of this kind and their use as medicaments, especially as agents for treatment and/or prevention of oncological diseases.