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From the aerial parts of Herissantia tiubae (K. Schum.) Brizicky two flavonol glycosides were isolated by means of chromatographic methods, kaempferol 3,7-di-O-a-L-rhamnopyranoside and kaempferol 3-O-b-D-(6’’-E-p-coumaroyl) glucoside. Their structural identification was made by IV, 1H and 13C NMR spectroscopy, including two dimensional techniques, together with comparison with literatura data. Preliminary tests were carried out with kaempferol 3,7-di-O-a-L-rhamnopyranoside in order to study its possible cardiovascular effect.

The N-salicyloyltryptamine (NST) is an indole derivative compound analogue to the alkaloid N-benzoyltryptamine. In the present study, the antiedematogenic activity of NST was investigated in animal models. Firstly, the acute toxicity for NST was assessed according to the OECD Guideline no. 423. The potential NST-induced antiedematogenic activity was evaluated by carrageenan-induced paw edema in rats, as well as by dextran-, compound 48/80-, histamine-, serotonin-, capsaicine-, and prostaglandin E2-induced paw edema in mice. The effect of NST on compound 48/80-induced ex vivo mast cell degranulation on mice mesenteric bed was investigated. No death or alteration of behavioral parameters was observed after administration of NST (2000 mg/kg, i.p.) during the observation time of 14 days. The NST (100 and 200 mg/kg, i.p.) inhibited the carrageenan-induced edema from the 1st to the 5th hour (**p