申请人:DR. REDDY'S LABORATORIES LIMITED
公开号:US20140357863A1
公开(公告)日:2014-12-04
The present application provides a process for preparation of Linagliptin reacting (R)-piperidine-3-amine of Formula II or an acid addition salt thereof with 1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-bromoxanthine of Formula III in the presence of a suitable base in an inert organic solvent.
本申请提供了一种制备林格列汀的方法,其中在惰性有机溶剂中,在适当的碱的存在下,将式II的(R)-哌啶-3-胺或其酸加成盐与式III的1-[(4-甲基-喹唑啉-2-基)甲基]-3-甲基-7-(2-丁炔-1-基)-8-溴黄嘌呤反应。