N-[1,2,3,4,6,7,12,12 alpha -octahydro-2H-indolo(2,3 alpha )-quinolizinyl-2 beta -yl]alkane and benzyl sulfonamides and anti-hypertensive use thereof

摘要

Indoloquinolizines of the formula (I) <IMAGE> (I) and their pharmaceutically acceptable acid addition salts [wherein R1 represents hydrogen, lower alkyl or lower aralkyl, R2 and R3 each represent hydrogen, halogen, lower alkoxy or lower alkyl, R4 represents hydrogen, halogen or lower alkyl and R5 represents lower alkyl or aryl] possess antihypertensive activity.