| abstract |
A benzamidine derivative having the general formula: (1) wherein R1 represents a hydrogen atom, a halogen atom, an alkyl group or a hydroxyl group, R2 represents a hydrogen atom or a halogen atom, R3 represents a hydrogen atom, an alkyl group optionally substituted, an aralkyl group, an alkylcarbonyl group optionally substituted, an alkylsulfonyl group optionally substituted, or the like, R?4 and R5¿ each represent a hydrogen atom, a halogen atom, an alkyl or carbamoyl group optionally substituted, or the like, R6 represents a heteroring or the like, R?7 and R8¿ each represent a hydrogen atom, an alkyl group, or the like, and n represents 0,1 or 2; or a salt thereof being pharmacologically acceptable. The benzamidine derivative and the salt have excellent inhibition action for activated blood coagulation factor X, and are useful as a medicine for therapy or prevention of a disease of blood coagulation. |