Salts of (R)-7-[3-amino-4-(2,4,5-trifluorophenyl)butanoyl]-3-trifluoromethyl-5,6,7,8-tetrahydroimidazo[1,5-a] pyrazine-1-carboxylic acid, preparation method and medical use thereof
TETRAHYDRO-IMIDAZO[1,5-a]PYRAZINE DERIVATIVES SALTS, PREPARATION METHODS AND MEDICINAL USE THEREOF
申请人:Tang Peng Cho
公开号:US20120065209A1
公开(公告)日:2012-03-15
Pharmaceutically acceptable salts of (R)-7-[3-amino-4-(2,4,5-trifluorophenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-formic acid, their preparation methods, compositions containing the said pharmaceutical salts and their use as medicaments, especially as dipeptidyl peptidase IV (DPP-IV) inhibitors are disclosed.
[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF SITAGLIPTIN AND ITS INTERMEDIATES<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA PRÉPARATION DE SITAGLIPTINE ET DE SES INTERMÉDIAIRES
申请人:STEREOKEM PVT LTD
公开号:WO2020089828A1
公开(公告)日:2020-05-07
The present invention relates to a process for the preparation of novel intermediates useful for the preparation of Sitagliptin or its pharmaceutically acceptable salts. The present invention relates to an efficient process for the preparation of Sitagliptin intermediates. The present invention relates to an improved process for the preparation of Sitagliptin or its pharmaceutically acceptable salts.