- PYRIDYL ALKYLAMINE COMPOUNDS WHICH ARE USEFUL AGAINST HISTAMINE H1 AND H2 RECEPTORS
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Arylalkylamine derivatives of the general formula STR1 are described which, owing to their anatagonistic action against histamine H. sub.1-and H 2-receptors, can be used for the prophylaxis and treatment of disorders in which histamine is involved. They are prepared in a manner known per se.
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- ANTIULCER BENZIMIDAZOLE DERIVATIVES
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Compounds of formula I STR1 in which R 1 and R 2, which may be the same or different, are hydrogen, a C 1 to C 3 alkyl group or R 1 and R 2 together with the nitrogen to which they are attached form an optionally substituted heterocyclic ring; R 3 and R. sub.4, which may be the same or different are hydrogen, a C 1 to C. sub.3 alkyl or an optionally substituted C 3 to C 6 cycloalkyl group, or R 3 and R 4 together with the nitrogen to which they are attached form an optionally substituted heterocyclic ring; m is 0, 1 or 2; p is 0, 1 or 2; E is an alkylene group connected to or interrupted by an oxygen or a sulphur atom; J is hydrogen or a substituent group; and their pharmaceutically acceptable salts have utility as histamine H 2-receptor antagonists.
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- Histamine H2 receptor antagonists. 1. Synthesis of N-cyano and N-carbamoyl amidine derivatives and their biological activities.
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A large number of N-cyano amidine derivatives were prepared as potential histamine H2 receptor antagonists and evaluated for their inhibitory action on histamine-stimulated chronotropic response of isolated right atria from guinea pigs. Several selected c
- Yanagisawa,Hirata,Ishii
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p. 849 - 857
(2007/10/02)
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- 1,2,4-TRIAZOLE-3,5-DIAMINE DERIVATIVES
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The invention relates to compounds of the formula (I) STR1 and physiologically acceptable salts, hydrates and bioprecursors thereof, in whichR 1 and R 2 represent hydrogen, an aliphatic or cycloaliphatic group, or R 1 and R 2 together with the nitrogen atom form a 5 to 10 membered heterocyclic ring:Alk represents a straight or branched alkylene chain;Q represents furan, thiophen or benzene ring which is incorporated into the rest of the molecule; X represents--CH 2--, STR2--O--or--S--where R 6 represents hydrogen or methyl;n represents zero, 1 or 2; m represents 2, 3 or 4;R 3 represents hydrogen, a substituted or unsubstituted aliphatic or aryl group and;R 4 and R 5, which may be the same or different, each represent hydrogen, a substituted or unsubstituted aliphatic, aryl, or together with the nitrogen atom form a heterocyclic group.
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