摘要:
The invention relates to carbonyl derivatives which are histamine H-2 antagonists and which inhibit gastric acid secretion. According to the invention where is provided a guanidine derivative of the formula I:- in which R' and R 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 1 and R 2 is halogen substituted, or R 2 is hydrogen and R 1 is R 5 -E-W in which W is 2-6C alkylene optionally substituted by 1 or 2 1-4C alkyls, E is O, S, SO. SO 2 or NR 6 in which R 6 is H or 1-6C alkyl, R 5 is H or 1-6C alkyl optionally substituted by 1 or 2 1-4C alkyls, or R 5 and R 6 are joined to form a pyrrolidine, piperidine, morpholine, piperazine or N-methylpiperazine ring, or R 2 is H and R 1 is H, 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; 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; R 4 is H or 1-6C alkyl; R 3 is H 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.
摘要:
Heterocyclic guanidine derivatives of the formula: in which D is O, S or NH; E is CH or when D is O or S, E is N; Y is S, O, CH 2 , SO or a direct bond; P is a direct bond or C (1-4) unbranched alkylene optionally substituted by 1 or 2 C (1-4) alkyls and Q is C (1-4) unbranched alkylene optionally substituted by 1 or 2 C( 1 - 4 )alkyls, provided total number of alkyls in P and Q is 1 or 2, that when Y is S, 0 or SO, P is alkylene and that when Y is O or SO, Q is C (2-4) alkylene; R 1 is H or C (1-10) alkyl; A is 3,4-dioxocyclo- buten-1,2-diyl or C=Z where Z is S, O, NCN, NNO 2 , CHNO 2 , NCONH 2 , C(CN) 2 , NCOR 2 , NCO 2 R 2 , NSO 2 R 2 or NR 3 where R 3 is C (1-6) alkyl or C (6-12) aryl and R 3 is H or C (1-6) alkyl; B is C( 1 - 6 )alkoxy, C (1-6) alkylthio or NR 4 R 5 where R 4 and R 5 are H, C (1-10) alkyl, C (3-6) alkenyl, C (3-6) alkynyl, C( 2 - 6 )(primary,OH)alkyl, C (2-6) primary NH 2 )alkyl, C (3-6) cycloalkyl, or R 4 and R 5 together are a 5- or 6-membered saturated ring which may contain an additional O or NH: and the salts thereof. A process for the manufacture of said compounds is described; e.g. 2-guanidino-4-(5-amino-2-methylpentyl)-thiazole gives by reaction with dimethyl(cyanimido)dithio- carbonate and then methylamine 2-guanidino-4-[5-(2-cyano-3-methylguanidino)-2-methylpentyl]thiazole.
摘要:
Heterocyclic antisecretory derivatives of the formula: where D is O, S or NH; E is CH or when D is O or S, E is N; Y is S, O, CH 2 , SO or a direct bond; m is O to 4 and n is 1 to 4, provided that when Y is S, O or SO m is 1 to 4, and when Y is O or SO, n is 2 to 4; A is a chain of 3 or 4 atoms comprising at least one C and also optionally S, N, 2N, or N and S, and also comprising C=O or C=S or where possible S0 2 and chain optionally substituted by 1 or 2 C (1-6) alkyl, benzyl, naphthylmethyl, 2-phenethyl, 4-phenylbutyl, pyridylmethyl, thiazolylmethyl, thienylmethyl, benzyloxy, pyridylmethoxy or phenoxymethyl radicals each optionally substituted on the aromatic ring system by 1 to 3 halogen atoms or methyl, methoxy, trifluoromethyl, dimethylamino, phenyl or phenoxy radicals; and the salts thereof. A process for the manufacture of said compounds is described; e.g. 2-guanidino-4[(2-aminomethyl)-thiomethyl]-thiazole gives by reaction with 5-(4-chlorobenzyl)-2-methyl- thiopyrimid-4-one 5-(4-chlorobenzyl)-2-[2-(2-guanidinothia- zol-4-ylmethylthio)ethylamino]pyrimid-4-one.
摘要:
The invention relates to a guanidine derivative of the formula: in which W is a 2-6C alkylene chain optionally substituted by 1 or 21-4C alkyls; E is O, S, SO, S0 2 or NR 3 in which R 3 is H or 1-6C alkyl; R 1 is H or a straight chain 1-6C alkyl optionally substituted by 1 or 2 1-4C alkyls; or R 1 and R 3 are joined to form a morpholine, pyrrolidine, piperidine or piperazine; ring X, P, Y, Q and R 2 are as defined in the specification, and the pharmaceutically-acceptable acid-addition salts thereof. Manufacturing process, pharmaceutical compositions and intermediates are also described. The compounds of the formula I are histamine H-2 antagonists.
摘要:
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:- in which R' 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 2 and R 3 are a variety of radicals described in the specification: and the pharmaceutically-acceptabie acid-addition salts thereof. Manufacturing processes and pharmaceutical compositions are also described.