PROCESS FOR PREPARING PYRROLIDINIUM SALTS

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专利权人:

NOVARTIS AG

发明人:

THOMAS ALLMENDINGER

申请号：

PT10713193

公开号：

PT2417106T

申请日:

2010.04.07

申请国别(地区):

PT

年份:

2017

代理人:

摘要：

A two step process for preparing a compound of formula I in salt or zwitterionic form, wherein R1 and R2 are each independently C3-C8-cycloalkyl or C6-C10-aryl and R3 and R4 are each independently C1-C8-alkyl. The process minimizes variation in the relative proportions of diastereoisomers.

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中国工程科技知识中心

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http://www.ckcest.cn/home/