申请人:Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt
公开号:US04182892A1
公开(公告)日:1980-01-08
A compound of the formula I: ##STR1## wherein: R is substituted or unsubstituted C.sub.1-6 alkyl, a substituted or unsubstituted aromatic ring, a heterocyclic ring, a cycloalkyl group or a fused ring system, R.sup.1 is hydrogen, lower alkyl, cycloaliphatic or heterocyclic ring, and X is a halogen atom.