PROCESS FOR THE PREPARATION OF C-FMS KINASE INHIBITORS
申请人:Janssen Pharmaceutica NV
公开号:US20140045789A1
公开(公告)日:2014-02-13
The present invention is directed to a process for the preparation of heterocyclic derivatives of formula I
wherein J, X, Z, and R
2
are as defined herein. Such compounds are useful as protein tyrosine kinase inhibitors, more particularly inhibitors of c-fms kinase.
The electrooxidation of several 1-methylimidazoles was performed in MeOH that contains NaCN at a platinum anode in a divided cell. Replacement of an aromatic hydrogen by a cyano group occurred. With 1,2,4,5-tetramethylimidazole, the 2,5-addition of cyano groups to the imidazole ring was achieved, and besides side-chain substitution occurred concurrently.
Competing pathways in the phototransposition of pyrazoles
作者:John A. Barltrop、A. Colin Day、Arthur G. Mack、Aziz Shahrisa、Shigeru Wakamatsu
DOI:10.1039/c39810000604
日期:——
Cyano-substituted pyrazoles transpose photo-chemically into imidazoles by two concurrent paths: (a) 1,5-interchange, probably by 2,5-bonding to a diazabicyclopentene which isomerises by nitrogen ‘walk’ before rearomatisation, and (b) 2,3-interchange, probably via an intermediate azirine; in sharp contrast, 1,5-dimethyl-3-trifluoromethylpyrazole phototransposes exclusively by the former path.
PROCESS FOR THE PREPARATION OF HETEROCYCLIC ESTER DERIVATIVES
申请人:Janssen Pharmaceutica NV
公开号:US20140046072A1
公开(公告)日:2014-02-13
The present invention is directed to a process for the preparation of heterocyclic ester derivatives of formula I
wherein A
1
, SEM, and W
1
are as defined herein. Such compounds are useful as intermediates in the synthesis of derivatives useful as protein tyrosine kinase inhibitors, more particularly inhibitors of c-fms kinase.