Pyrrolo[3,4-d][2]benzazepines

Abstract

The present invention relates to compounds of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen, lower alkyl, C.sub.3 to C.sub.7 alkenyl or alkynyl, hydroxymethyl, the group ##STR2## wherein R.sub.11 is hydrogen, hydroxy, alkoxy, amino and mono- or di-lower alkylamino; and R.sub.3 is selected from the group consisting of hydrogen, lower alkyl, C.sub.3 to C.sub.7 alkenyl or alkynyl, hydroxymethyl, the group ##STR3## wherein R.sub.11 is hydrogen, hydroxy, trihalomethyl, alkoxy, amino and mono- or di-lower alkylamino; R.sub.2 is selected from the group consisting of hydrogen, lower alkyl, C.sub.3 to C.sub.7 alkenyl or alkynyl, the group ##STR4## C.sub.2 to C.sub.7 carboxylic acids and the esters and amides thereof, hydroxy C.sub.2 to C.sub.7 alkyl and amino or mono- or di-lower alkyl amino C.sub.2 to C.sub.7 alkyl; R.sub.4 is selected from the group consisting of hydrogen, acyloxy, straight chain lower alkoxy and hydroxy; R.sub.5 is halogen or hydrogen; R.sub.6 is halogen with the proviso that if one of R.sub.1 or R.sub.3 is hydroxymethyl or the group ##STR5## wherein R.sub.11 is as above then the remaining substituent is selected from the group consisting of hydrogen, lower alkyl and C.sub.3 to C.sub.7 alkenyl or alkynyl, and R.sub.2 is hydrogen and the further proviso that (A) when R.sub.4 is acyloxy then R.sub.1 and R.sub.3 are hydrogen, lower alkyl, C.sub.3 to C.sub.7 alkenyl or C.sub.3 to C.sub.7 alkynyl, and R.sub.2 is the group ##STR6## (B) when R.sub.4 is hydroxy then R.sub.1 and R.sub.3 are hydrogen, lower alkyl, C.sub.3 to C.sub.7 alkenyl or C.sub.3 to C.sub.7 alkynyl, and R.sub.2 is hydrogen or (C) when R.sub.4 is alkoxy then R.sub.1 and R.sub.3 are hydrogen, lower alkyl, C.sub.3 to C.sub.7 alkenyl or C.sub.3 to C.sub.7 alkynyl, and the pharmaceutically acceptable salts thereof. Also disclosed are certain 5,6 dihydro derivatives, N-oxides and quarternary iminium salts of the pyrrolobenzazepines.