ENTECAVIR SYNTHESIS METHOD AND INTERMEDIATE COMPOUND THEREOF
申请人:Zheng Zhiguo
公开号:US20130217879A1
公开(公告)日:2013-08-22
The present invention relates to a preparation method for a medicine and an intermediate compound thereof, specifically, relates to a preparation method for entecavir, an intermediate compound thereof, and a synthesis method for the intermediate compound.
本发明涉及一种药物及其中间体的制备方法,具体涉及恩替卡韦及其中间体的制备方法以及中间体的合成方法。
PROCESS FOR PREPARING ENTECAVIR AND ITS INTERMEDIATES
申请人:ScinoPharm Taiwan, Ltd.
公开号:EP2536724B2
公开(公告)日:2019-10-23
Process for Preparing Entecavir and its Intermediates
申请人:Hu Tsung-Cheng
公开号:US20110201809A1
公开(公告)日:2011-08-18
A process of making entecavir comprising converting a compound of formula (M5)
to entecavir,
wherein the two PGs on the formula (M5) are taken together to form an optionally substituted six- or seven-member cyclic ring.