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.