2-substituted benzofuran derivatives useful in treating cardiac

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

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514234, 514237, 514253, 514320, 544153, 544376, 546196, A61K 31535, C07D29508

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active

046043926

ABSTRACT:
A 2-substituted benzofuran derivative of general formula I or II ##STR1## in which R.sub.1 and R.sub.2, can be the same or different, and are a hydrogen atom, a halogen atom, an alkyl group containing 1 to 4 carbon atoms, an arylalkyl group, an aryl group, a hydroxyl group, an alkoxy group, or an NH.sub.2, NH-alkyl, N(alkyl).sub.2, NH(CO-alkyl), NH(CO-aryl) or NO.sub.2 group, or R.sub.1 and R.sub.2 can together form a ring of 5-8 carbon atoms; R.sub.3 is a hydrogen atom, an alkyl group containing 1 to 4 carbon atoms or an aryl group; R.sub.4 is a hydrogen atom, an alkyl group, an aryl or an arylalkyl group, R.sub.5 is a hydroxyl group, an alkoxy group, an OCO-alkyl, an OCO-aryl, OCOHN-alkyl or OCONH-aryl group, ##STR2## where n is a number between 1 and 4, R.sub.7 is a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms, and R.sub.8 and R.sub.9, which can be the same or different, represent a hydrogen atom, an alkyl group, an aryl group, an alkoyl group, arylalkoyl group or an aroyl group, or can together form a heterocyclic ring which can contain supplementary heteratoms, and R.sub.6 is a hydrogen or halogen atom, an alkyl group, an arylalkyl group, an aryl group, a hydroxyl group, an alkoxy group, or an NH.sub.2, NH-alkyl, (N(alkyl).sub.2, NHCO-alkyl, NHCO-aryl or NO.sub.2 group. The compounds are useful for treating cardiac arrhythmic, histaminic and tussive conditions.

REFERENCES:
patent: 3156688 (1964-11-01), Zaugg et al.

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