Coumarin derivatives with comt inhibiting activity
申请人:——
公开号:US20030186975A1
公开(公告)日:2003-10-02
Compounds of formula (I′) wherein the two OH— substituents in the phenyl moiety are in a position ortho to one another and R1 in a position ortho to one of the hydroxy groups; and X, R
1
to R
6
are as defined in claims, exhibit COMT enzyme inhibiting activity so that they are useful as COMT inhibitors.