PYRROLO(3,2,1-HI)INDOLE DERIVATIVES, THEIR PREPARATION AND THEIR THERAPEUTICAL USE

摘要

Pyrrolo[3,2,1-hi]indole derivatives, in the form of racemates or optically active isomers, of formula (I) (I) in which R is a hydrogen atom or C1-C4 alkyl and R1 and R2, which may be the same or different, are hydrogen, halogen or C1-C4 alkyl and their pharmaceutically acceptable acid addition salts are useful as alpha 2-antagonists.