Benzofuran derivatives represented by general formula (I) or pharmacologically acceptable salts thereof, wherein R1 represents lower alkyl; R2 represents hydrogen or optionally substituted lower alkyl; R3, R4, R5, and R6 are the same or different and each represents hydrogen or lower alkyl; X represents CH2 or C=O; and Y represents CH2 or NH.
The present invention relates to benzofuran derivatives represented by following general formula (I):
wherein R1 represents lower alkyl, R2 represents hydrogen or substituted or unsubstituted lower alkyl, R3, R4, R5 and R6 independently represent hydrogen or lower alkyl, X represents CH2 or C═O, and Y represents CH2 or NH, or pharmaceutically acceptable salts thereof.