Process to prepare n-cyano-n'-methyl-n''-(2-¬(4-...

C - Chemistry – Metallurgy – 07 – D

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C07D 233/64 (2006.01) C07C 279/28 (2006.01) C07C 323/44 (2006.01) C07D 233/54 (2006.01)

Patent

CA 1121363

ABSTRACT A process for preparing N-cyano-N'-methyl-N"-{2-[(4-methyl-5-imidazolyl)- methylthio]-ethyl} guanidine of the formula Image characterized in that 4-thiomethyl-5-methyl imidazole is reacted with N- cyano-N'-methyl-N''-(2-chloroethyl) guanidine in a two-phase system under the conditions of phase transfer catalysis. The compound is an extraordinarily efficient antagonist of hystamine on H2 receptors. It has a hindering effect upon basal as well as stimulated secretion of gastric acid and pepsin.

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