REMEDY FOR PARKINSON'S DISEASE.

摘要

A remedy for Parkinson's disease, which contains a polycyclic compound represented by general formula (I) or (II), or a pharmacologically acceptable salt thereof as the active ingredient. In formula (I) R<1> represents hydrogen, lower alkyl or lower alkanoyl; R<2> resents hydrogen, lower alkyl, lower alkenyl, cycloalkyl, aryl, aralkyl or heterocycle; R<3> represents heterocycle; X represents a single bond, O, S, S(O), S(O)2 or NR<4>, wherein R<4> represents hydrogen, lower alkyl, etc.; and A represents N or CR<5>, wherein R<5> represents hydrogen or lower alkyl. In formula (II) R<6> represents aryl or heterocycle; Y represents O, S or NR<7>, wherein R<7> represents hydrogen or lower alkyl; R<8> represents hydrogen, lower alkyl, lower alkenyl, lower alkynyl, cycloalkyl, aryl, aralkyl or heterocycle; and B represents together with the two neighboring groups a mono- or bicyclic carbon or hetero ring. <CHEM>