A compound represented by the following general formula (I) or a pharmacologically acceptable salt thereof, wherein A represents a C3 to C12 cycloalkyl group which may be substituted by one to three selected from a fluoro group, a hydroxy group, a C1 to C6 alkyl group, etc; R
1
, R
2
, and R
3
each independently represent a hydrogen atom, a fluoro group, or a C1 to C6 alkyl group; R
4
represents a hydrogen atom or a prodrug group; and Y represents —CH
2
—CHR
5
—CH
2
—NHR
6
(wherein R
5
represents a hydrogen atom, a C1 to C6 alkyl group, or a C1 to C6 alkoxy group, and R
6
represents a hydrogen atom or a prodrug group), or the like exhibits excellent TAFIa inhibitory activity and is useful as a therapeutic drug for myocardial infarction, angina pectoris, acute coronary syndrome, cerebral infarction, deep vein thrombosis, pulmonary embolism, and the like.
以下通式(I)所表示的化合物或其药学上可接受的盐,其中A代表一个C3到C12的环烷基,该环烷基可能被一个或三个从
氟基,羟基,C1到C6烷基等中选出的基团取代;R1,R2和R3分别独立地表示氢原子,
氟基或C1到C6烷基;R4表示氢原子或前药基团;Y表示-
CH2-CHR5- -NHR6(其中R5表示氢原子,C1到C6烷基或C1到C6烷氧基,R6表示氢原子或前药基团)等,具有出色的TAFIa抑制活性,并可用作治疗心肌梗死,心绞痛,急性冠状动脉综合征,脑梗死,深静脉血栓形成,肺栓塞等的治疗药物。