Anti-spasmdoic agents having an acetylenic bond

Abstract

Abstract A new class of anti-spasmodic compounds having two branch chains is provided. The compounds have the general formula: ##STR1## where Y is H or OH; j is an integer from 0 to 4; k is an integer from 0 to 4, and wherein m is an integer from 1 to 4; n is an integer from 1 to 4; p is an integer from 1 to 4; and X may be nonexistent or may be O, S, NH or CH 2 or salts thereof, but when X is nonexistent the terminal group in which both the n-chain and the p-chain is a methyl group. ##STR2## The reaction was performed under reflux condensation. Following the reaction, which was usually complete within a few hours, the acid chlorides were vacuum distilled and reacted with a thiol compound as described above. The compounds of this invention are anti-muscarinic agents (cholinergic-muscarinic receptor antagonists) which inhibit the actions of acetylcholine on autonomic effectors innervated by postganglionic cholinergic nerves as well as on smooth muscle that lacks cholinergic innervation. Since a major component of parasympathetic control of smooth muscle occurs via muscarinic receptors, these compounds are effective as modifiers of smooth muscle activity. Thiphenamil hydrochloride has been shown to decrease spasm of the gastrointestinal tract, biliary tract, ureter and uterus without producing characteristic atropinic side effects on salivary and sweat glands, GI glands, the eye or the cardiovascular system. This invention results in compounds which are as efficacious as thiphenamil hydrochloride, or more so, in relaxing various smooth muscle systems while at the same time demonstrating thiphenamil hydrochloride's lack of associated side-effects.

Inventors

• 👤 William M. Davis

Bibliographic Details