| abstract |
Provided are compounds having excellent TAFIa inhibitory activity. Specifically, a compound represented by the following formula (I) or a salt thereof is provided. In the formula, A represents a benzene ring or a pyridine ring; X represents a formula — (CH 2) —, a formula — (CH 2) 2 —, an oxygen atom, a nitrogen atom or a single bond, and Y represents a formula — ( CH2) 3-NH-R3, formula-(CH2) 4-NH-R3, or 2-aminopyridyl group; R3 represents a hydrogen atom or the like; R1 represents a hydrogen atom or the like; R2 represents CO2R8 or the like Or a tetrazolyl group; R8 represents a hydrogen atom, a C1-10 alkyl group or a structure represented by the following formulas Ib and Ic; m and n each represents an integer of 0 or 1; |