TRISUBSTITUTED PIPERAZINE COMPOUND

    公开(公告)号:JPH03232864A

    公开(公告)日:1991-10-16

    申请号:JP29345889

    申请日:1989-11-10

    摘要: NEW MATERIAL:A compound shown by formula I [A is phenyl, condensed polycyclic hydrocarbon, heterocyclic, etc.; X is methylene, carbonyl or thiocarbonyl; G is (CH2)n-Z-R (n) is 0-2; (z) is valence, O, S, SO, CO, etc.; R is H, lower alkyl, etc.) ; R to R are lower alkyl] or a salt thereof. EXAMPLE:Methyl 1-(2,3-dimethoxy-6,7-dihydro-5H-benzocyclohepten-8- ylcarbonyl)-4-(3,4,5-trimethoxybenzoyl)piperazine-2-carboxylate. USE:An antagonist against blood platelet activating factor having excellent intestine absorption and being orally administrable besides injection administration. PREPARATION:A compound shown by the formula A-COOH and a compound shown by formula II are subjected to ordinary amide bond formation reaction in the presence of a base (e.g. triethylamine) in a solvent such as dioxane at -20 to 50 deg.C to give a compound shown by formula I.