Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Parasitic organism or component thereof or substance...
Patent
1982-03-01
1984-05-08
Gerstl, Robert
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Parasitic organism or component thereof or substance...
424249, 424251, 424263, 424270, 424272, 424273R, 424273P, 544194, 544204, 544317, 544335, 544336, 544408, 548185, 548194, 548230, 548236, 548255, 548260, 548265, 546297, 546306, C07D23138, C07D24904, A61K 3141, A61K 31415
Patent
active
044474415
ABSTRACT:
The invention relates to guanidine 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 and R.sup.2, same or different, are hydrogen or 1-10C alkyl, 3-8C cycloalkyl or 4-14C cycloalkylalkyl, each alkyl, cycloalkyl or cycloalkylalkyl optionally carrying one or more F, Cl or Br atoms, provided that one of R.sup.1 and R.sup.2 is halogen substituted, or R.sup.2 is hydrogen and R.sup.1 is R.sup.5 --E--W in which W is 2-6C alkylene optionally substituted by 1 or 2 1-4C alkyls, E is O,S or NR.sup.6 in which R.sup.6 is H or 1-6C alkyl, R.sup.5 is H or 1-6C alkyl optionally substituted by 1 or 2 1-4C alkyls, or R.sup.5 and R.sup.6 are joined to form a pyrrolidine, piperidine, morpholine, piperazine or N-methylpiperazine ring; ring X is a heterocyclic ring as defined in the specification; A is phenylene or 5-7C cycloalkylene, or a 1-8C alkylene into which is optionally inserted one or two groups; D is O or S; and R.sup.3 and R.sup.4 are hydrogen or a variety of radicals described in the specification: and the pharmaceutically-acceptable acid-addition salts thereof. Manufacturing processes and pharmaceutical compositions are also described.
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Gilman David J.
Yellin Tobias O.
Gerstl Robert
Imperial Chemical Industries plc
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