Patent ID: 8609710

Claim:
A compound represented by the general formula (I): or a pharmacologically acceptable salt thereof; wherein A is a C3 to C12 cycloalkyl group substituted by one or two identical or different C1 to C6 alkyl groups; R 1 , R 2 , and R 3 are each independently a hydrogen atom, a fluoro group, or a C1 to C6 alkyl group; R 4 is a hydrogen atom or a prodrug group; and Y is a group selected from: —CH 2 —CHR 5 —CH 2 —NHR 6 , where R 5 is a hydrogen atom, a C1 to C6 alkyl group, or a C1 to C6 alkoxy group, and R 6 is a hydrogen atom or a prodrug group; —O—CHR 7 —CH 2 —NHR 8 , wherein R 7 is a hydrogen atom, a C1 to C6 alkyl group, or a C1 to C6 alkoxy group, and R 8 is a hydrogen atom or a prodrug group; or wherein R 9 is a hydrogen atom or a prodrug group, and * is the position for substitution.