Pyrrolobenzimidazoles, process for the preparation thereof and pharmaceutical compositions containing them

Abstract From the Canadian patent

Pyrrolobenzimidazoles of the general formula:, (I), wherein R1 is a hydrogen atom or an alkyl alkenyl or, cycloalkyl radical; R2 is a hydrogen atom cyano group, or alkyl or alkenyl radical or a carbonyl group substituted by hydroxyl, alkyl, alkoxy amino, alkyl-, amino, dialkylamino or hydrazino or together with R1 forms a cycloalkylene radical or R1 and R2 together form an alkylidene or cycloalkylidene radical; R3 R4, and R5, which can be the same or different each, represent a hydrogen atom or an alkanesulphonyloxy trifluoromethanesulphonyloxy, alkanesulphonylamino trifluoromethanesulphonylamino, N-alkyl-alkanesulphonylamino, N-alkyl-trifluoromethanesulphonylamino, alkylsulphenylmethyl, …