Patent ID: 7396844

Claim:
A benzamidine compound of the formula (1) or a pharmaceutically acceptable salt thereof: wherein L represents a group of formula (2): wherein: W in formula (2) represents hydrogen or alkyl having 1 to 6 carbon atoms; X in formula (2) represents hydrogen methyl substituted by carboxyl; V represents phenyl or benzoyl, each of which is substituted; wherein the substituent for V is selected from the group consisting of carboxyl, carbamoyl, mono- or dialkylcarbamoyl having 2 to 7 carbon atoms, amidino, mono- or dialkylamidino having 2 to 7 carbon atoms, piperidyloxy, iminoalkylpiperidyloxy having 7 to 10 carbon atoms, pyrrolidyloxy, piperidylalkyl having 6 to 9 carbon atoms, pyrrolidinyl, pyrrolidinylcarbonyl, pyrrolidinylsulfonyl, and pyridinylethyl; Y represents a group of any of the following formulae (7), (8), (9), (10) and (11): wherein n in formula (7) and (8) represents an integer of 1 to 3; and Z represents a group of formula (12-2): wherein R 5 represents hydrogen or alkyl having 1 to 6 carbon atoms.