The invention concerns benzoquinolizines of general formula
and their pharmaceutically acceptable acid addition salts. In formula (I), R represents hydrogen or lower alkyl, R' and R' which may be the same or different each represent hydrogen, lower alkyl, lower alkoxy or halogen, R' and R4 which may be the same or different each represents lower alkyl, halo(lower)alkyl or aryl and A represents a lower alkylene group having 1 to 3 carbon atoms in the chain between the two N atoms. The compounds possess α2- adrenoceptor antagonistic activity in warm blooded animals.
本发明涉及通式的苯并喹嗪类化合物及其药学上可接受的酸加成盐。 在式(I)中,R代表氢或低级烷基,R'和R'可以相同或不同,各自代表氢、低级烷基、低级烷氧基或卤素,R'和R4可以相同或不同,各自代表低级烷基、卤代(低级)烷基或芳基,A代表在两个N原子之间的链上有1至3个碳原子的低级亚烷基。 这些化合物在温血动物中具有α2-
肾上腺素受体拮抗活性。