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METHOD FOR PREPARING DABIGATRAN ETEXILATE INTERMEDIATE, AND INTERMEDIATE COMPOUND
专利权人:
SHANGHAI INSTITUTE OF PHARMACEUTICAL INDUSTRY ;CHINA STATE INSTITUTE OF PHARMACEUTICAL INDUSTRY ;CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD
发明人:
GUO Yajun,SHAN Hanbin,ZHU Xueyan,YUAN Zhedong,YU Xiong,GUO Meng,HU Mingtong,WANG Duzheng
申请号:
US201415323709
公开号:
US2017190666(A1)
申请日:
2014.07.03
申请国别(地区):
美国
年份:
2017
代理人:
摘要:
Disclosed are a method for preparing a dabigatran etexilate intermediate, and an intermediate compound. The method for preparing a dabigatran etexilate intermediate 4 comprises; reacting a compound 3 with a C1-C3 alkyl alcohol solution of methylamine in an organic solvent, wherein, X=chlorine, bromine, or iodine. Also disclosed are an intermediate compound 3 and a preparation method thereof. The method for preparing a dabigatran etexilate intermediate of the present invention has the advantages of simple process, easy operation, high yield, and easy purification, thus being suitable for industrial production.;
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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