Inhibitory Effect of Di- and Trihydroxy Triterpenes from the Flowers of Compositae on 12-.OMICRON.-Tetradecanoylphorbol-13-acetate-Induced Inflammation in Mice.

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Abstract
Ten dihydroxy- and trihydroxy triterpenes, viz., four taraxastanes: faradiol, heliantriol B0, heliantriol C and arnidiol; two lupanes: calenduladiol and heliantriol B2; two oleananes: maniladiol and longispinogenin; and two ursanes: brein and uvaol, isolated from the nonsaponifiable lipids of the flower extracts of Compositae plants were evaluated with respect to their anti-inflammatory activity against 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced inflammation in mice. All the triterpenes were found to possess marked inhibitory activity. The 50% inhibitory dose of these compounds with respect to TPA-inflammation (1 microgram) was 0.03-0.2 mg/ear.

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