PROCESS FOR PREPARATION OF PURE LINAGLIPTIN

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专利权人:

发明人:

Pranab Haldar,Venkateswarlu Muvva,Anil Kumar Prataprao,Vijaya Kumar Karri,Bhanu Pratap Taduri,Venkateshwara Natraj Birudaraju

申请号：

US14369289

公开号：

US20140357863A1

申请日:

2012.12.27

申请国别(地区):

US

年份:

2014

代理人:

摘要：

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.

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