Anti-arrhythmic azabicyclic compounds

The invention relates to new anti-arrythmic azabicyclo[3.3.1]nonanes of the general formula (I) (I) wherein R1, R2 and R3 are C1-4 alkyl groups which are the same or different, or one of them is a benzyl group and the others are C1-4 alkyl groups, and R4 is a hydroxy group, or an etherified hydroxy group of the formula -OR5, or an esterified hydroxy group of the formula -OOCR6, in which the esterifying group R5 is a phenyl or benzyl group which optionally each can have a trihalomethyl substituent or one or more halogen or C1-4 substituents, or is a diphenyl or benzhydryl group, and the esterifying group R6 is a C1-8 alkyl or a C3-6 cycloalkyl group, or a phenyl or benzyl group which optionally each can have a halo-substituent or one or more C1-4 alkyl, C1-4 alkoxy, nitro or phenyl substituents, or is an optionally halogenated or hydrogenated naphthyl group, or a cinnamyl group optionally substituted by a halogen atom or C1-4 alkoxy groups, or is a benzhydryl or 1,1-diphenyl-hydroxymethyl group, or is a heterocyclic substituent selected from the group consisting of thenyl, 9-xanthenyl or 3-indolyl-(C1-3 alkyl) groups, as well as the stereoisomers and pharmaceutically acceptable acid addition salts thereof. The invention also provides a process for the preparation of the new compounds of the general formula (I), in which new intermediates of the general formula (IV), (IV) wherein R1, R2 and R3 are as defined above, are utilized.