5,6-dihydro-8,9-dimethoxy-1-methyl-3-(phenylamino) imidazo5,1-aisoquinoline compounds

Abstract From the Canadian patent

5,6-DIHYDRO-8,9-DIMETHOXY-1-METHYL-3-(PHENYLAMINO) IMIDAZO5,1-aISOQUINOLINE COMPOUNDS, Abstract of the Disclosure Compounds of formula I, I, wherein either R1 is hydroxy or alkoxy of 1 to 4 carbon atoms, and, R2 is hydrogen, hydroxy or alkoxy of 1 to 4 carbon atoms, or R1 and R2, together, are methylenedioxy R3 is hydrogen or alkyl of 1 to 4 carbon atoms, and, R4 is phenyl or phenyl substituted by 1 2 or, 3 substituents independently chosen from halogen, hydroxy, nitro or alkyl(C1-4) and haloalkyl(C1-4) or alkoxy(C1-4), are useful as anti-arrhythmic agents.