| abstract |
The present invention provides an α,β-unsaturated amide compound or a pharmaceutically acceptable salt or the like thereof having anticancer activity and the like represented by the following formula (I): n n[wherein, “A” represents optionally substituted heterocyclic diyl,n R 1 represents hydrogen atom or optionally substituted lower alkyl, R 2 represents optionally substituted aryl, optionally substituted cycloalkyl, optionally substituted aliphatic heterocyclic group or optionally substituted aromatic heterocyclic group, X represents —O—, —S—, —SO 2 —, —NR X1 — (wherein, R X1 represents hydrogen atom or lower alkyl), —CHR X2 — (wherein, R X2 represents hydrogen atom or hydroxy), —CH═CH—, —CO— or —NH—CO—, and n1 and n2 are the same or different, and each represents 0 or 1]. |