申请人:Belogi Gianluca
公开号:US20080076923A1
公开(公告)日:2008-03-27
A process for the preparation of valgancyclovir which comprises:
a) reacting a compound of formula 7,
in an aprotic solvent, in the presence of a condensing agent, with a compound of formula 8,
wherein R
1
, and R
2
may be, each independently, hydrogen, an halogen atom or an hydroxyl group; the double bond may either be in the E or Z configuration or a mixture thereof to yield a compound of formula 9
b) mild hydrolysis of compound obtained in a) to give valgancyclovir.