N-hydroxyurea derivatives as antiallergy and antiinflammatory agents
申请人:Pfizer Inc.
公开号:US05464849A1
公开(公告)日:1995-11-07
Compounds of formula I ##STR1## or salts thereof, where R is alkyl, phenyl, phenoxy or substituted phenyl and phenoxy; X is S or O; n is an integer of 1 or 2; A is --CH.sub.2 -- or --CH(CH.sub.3)--; and B is hydrogen or methyl, useful as antiallergy and antiinflammatory agents.