Amidine derivatives

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

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514245, 514247, 514252, 514269, 514333, 544182, 544211, 544212, 544238, 544239, 544240, 544241, 544284, 544296, 544298, 544311, 544326, 544327, 544328, 544329, 544330, 544336, 546261, 546264, 546290, 546296, 546297, 546306, 548127, 548128, 548131, 548134, 548136, 548143, 548202, 248203, 548204, 548205, 548252, 548255, 548263, 548264, 548265, 548266, 548269, 548329, 548376, 548378, A61K 31505, C07D23942

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active

047481650

ABSTRACT:
This invention relates to amidine derivatives which are histamine H-2 antagonists and which inhibit gastric acid secretion. According to the invention there is provided a guanidine derivative of the formula I: ##STR1## in which R.sup.1 is hydrogen or a 1-10C alkyl, 3-8C cycloalkyl, 4-14C cycloalkylalkyl, 3-6C alkenyl, 3-6C alkynyl, 1-6C alkanoyl, 6-10C aryl, 7-11C aralkyl or 7-11C aroyl radical, the latter three being optionally substituted; ring X is a heterocyclic ring as defined in the specification; A is phenylene or 5-7C cycloalkylene or a 1-8C alkylene chain into which is optionally inserted one or two groups; and R.sup.2 and R.sup.3 are a variety of radicals described in the specification: and the pharmaceutically-acceptable acid-addition salts thereof. Manufacturing processes and pharmaceutical compositions are also described.

REFERENCES:
patent: 4165377 (1979-08-01), Jones et al.
patent: 4165378 (1979-08-01), Gilman et al.
patent: 4242350 (1980-12-01), Yellin et al.
patent: 4242351 (1980-12-01), Yellin et al.
patent: 4252819 (1981-02-01), Hirata et al.
patent: 4362728 (1982-12-01), Yellin et al.

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