Inhibitory effect of 2-(E-2-alkenoylamino)ethyl alkyl sulfides on gastric ulceration in rats. II. Structure and activity relationships of 2(E-n or Z-n-decenoylamino)ethyl alkyl sulfides

Article abstract of DOI:10.1248/cpb.39.1546

The analogues of 2-(E-n or Z-n-decenoylamino)ethyl carbamoylmethyl sulfide, including the modifications of sulfide portion, double bond in decenoyl chain and alkyl sulfide moiety, were synthesized and their inhibitory effects on stress-induced ulceration in rats were compared. Replacing the sulfura atom by methylene group or oxygen atom reduced the effect of potency. Saturation of the double bond in the decenoyl chain tended to reduce the anti-ulcerogenic activity in rats. There was no relationship between the position of double bond in decenoyl chain and the pharmacological activity. On the other hand, compounds with E-configuration showed stronger anti-ulcer activity than the corresponding Z-type of compounds. Among 9 kinds of S substituted alkyl groups for carbamoylmethyl, 2-(E-2-decenoylamino)ethyl 2-cyclohexylethyl sulfide showed the most potent anti-ulcerogenic activity in rats and also showed the lowest acute toxicity in mice.