Process for producing apovincaminic acid esters and their salts
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0042526A1
公开(公告)日:1981-12-30
A compound of the formula
wherein R1 is a C1-C6 alkyl group and R is a hydrogen atom or a C1-C6 alkyl group, and their salts, which are useful as cerebral vasodilator, and processes for its preparation.