Nor bis-indole compounds usable as medicaments

Compounds corresponding to the following formula (I):

• ##STR18## wherein R'.sub.1 is selected from the group consisting of a hydrogen atom and an alkoxy, acyl, formyl and haloacyl radical, said alkoxy radical containing from 1 to 5 carbon atoms, said acyl and haloacyl radical containing from 2 to 5 carbon atoms;
• R'.sub.2 is selected from the group consisting of a hydrogen atom and an alkyl radical, said alkyl radical containing from 1 to 5 carbon atoms;
• R'.sub.3 and R".sub.3 are independently selected from the group consisting of a hydrogen atom and a hydroxyl radical and an alkanoyloxy radical, said alkanoyloxy radical containing from 2 to 5 carbon atoms, and together are an oxo group, and R'.sub.3 and R'.sub.5 together are an epoxy bridge or a double bond;
• R'.sub.4 is selected from the group consisting of a hydrogen atom and an alkyloxycarbonyl, hydroxymethyl, alkanoyloxymethyl and acetamido radical;
• R'.sub.5 and R".sub.5 are independently selected from the group consisting of a hydrogen atom and a hydroxyl, alkanoyloxyl, ethyl and 2-hydroxyethyl radical, said alkanoyxloxyl radical having from 2 to 5 carbon atoms;
• R'.sub.6 is selected from the group consisting of a hydrogen atom and an ethyl, 2-hydroxyethyl and acetyl radical;
• R.sub.1 is selected from the group consisting of a hydrogen atom and an alkyl, formyl and acyl radical, said alkyl radical having from 1 to 5 carbon atoms, said acyl radical having from 2 to 5 carbon atoms;
• R.sub.2 is selected from the group consisting of a hydrogen atom and alkoxy radical, said alkoxy radical containing from 1 to 5 carbon atoms;
• R.sub.3 is selected from the group consisting of a hydrogen atom and a hydroxyl and alkanoyloxyl radical, said alkanoyloxyl radical containing from 2 to 5 carbon atoms, and together with R.sub.4 is selected from the group consisting of an epoxy bridge and a double bond;
• R.sub.4 is selected from the group consisting of a hydrogen atom and a hydroxyl, alkanoyloxyl radical of from 2 to 5 carbon atoms, and together with R.sub.5 is an epoxy bridge;
• R.sub.6 is selected from the group consisting of an alkyloxycarbonyl, hydrazido, acetamido, hydroxymethyl and alkanoyloxymethyl radical;
• and
• R.sub.5 and R.sub.7 are selected from the group consisting of a hydrogen atom and a hydroxyl and alkanoyloxyl radical of from 2 to 5 carbon atoms;
• acid addition and quaternary ammonium salts thereof and 12-chloro derivative thereof.