西他列汀 、 硫酸 以
乙醇 、 水 为溶剂,
以1.0 g (1.978 mmoles) of crystalline form M of sitagliptin sulfate obtained by means of any of the processes的产率得到sitagliptin sulfate
Processes for the preparation of sitagliptin and pharmaceutically acceptable salts thereof
申请人:Dr. Reddy's Laboratories Limited
公开号:US08309724B2
公开(公告)日:2012-11-13
There is provided an improved process for the preparation of Sitagliptin of Formula II by reduction of compound of Formula VIII to Formula IX followed by deprotection of Formula IX to afford Sitagliptin of Formula II.