| abstract |
Novel acylhydrazine derivatives exhibiting an inhibitory activity against activated blood coagulation factor X, which are compounds of general formula (I) <CHEM> or salts thereof, wherein R is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group; R<1> and R<2> are each hydrogen or optionally substituted hydrocarbyl, or alternatively R<1> and R<2> or the substituent of X<1> and R<2> may be united to form an optionally substituted ring; X<1> and X<2> are each free valency, optionally substituted alkylene, or optionally substituted imino; D is oxygen or sulfur; A is -N(R<3>)-Y- or -N=Y-, R<3> is hydrogen, optionally substituted hydrocarbyl, or acyl; Y is an optionally substituted chain hydrocarbon group or an optionally substituted cyclic group; and Z is (1) optionally substituted amino, (2) optionally substituted imidoyl, or (3) an optionally substituted nitrogenous heterocycle group. |