摘要:
A compound of the formula: wherein R 1 is carboxy, amidated carboxy, cyano, thiocarbamoyl or tetrazolyl group; R 7 is hydrogen or aryl; R 2 is hydrogen, hydroxy, lower alkyl or lower alkoxy; R 3 is hydrogen, hydroxyl, lower alkyl, lower alkoxy, lower alkenyloxy, aryl which may have suitable substituent(s), arylthio, aroyl, ar(lower)alkyl, arenesulfonyl, arylamino which may have a suitable substituent or aryloxy; and R 2 and R 3 can be located at any place on the quinolizinone ring and can be linked together to form -CH 2 CH 2 CH 2 -, -CH = CH- or -CH = CH-CH = CH-; and pharmaceutically acceptable salts thereof, processes for preparing them and pharmaceutical compositions comprising them in association with the pharmaceutically acceptable, substantially non-toxic carrier or excipient.
R 1 is carboxy, amidated carboxy, cyano, thiocarbamoyl or tetrazolyl group; R 7 is hydrogen or aryl; R 2 is hydrogen, hydroxy, lower alkyl or lower alkoxy; R 3 is hydrogen, hydroxyl, lower alkyl, lower alkoxy, lower alkenyloxy, aryl which may have suitable substituent(s), arylthio, aroyl, ar(lower)alkyl, arenesulfonyl, arylamino which may have a suitable substituent or aryloxy; and R 2 and R 3 can be located at any place on the quinolizinone ring and can be linked together to form -CH 2 CH 2 CH 2 -, -CH = CH- or -CH = CH-CH = CH-; and pharmaceutically acceptable salts thereof, processes for preparing them and pharmaceutical compositions comprising them in association with the pharmaceutically acceptable, substantially non-toxic carrier or excipient.