3 rezultātiem
Seven coumarin derivatives (imperatorin, heraclenin, xanthotoxin, marmesin, chelepin, oxypeucedanin, esculin) and a furan derivative (nimbolide) were screened on 6 Ames tester strains (TA92, TA94, TA97, TA98, TA100, TA102). The eight compounds are chemicals isolated from three Nigerian medicinal
The isolation of the coumarins xanthyletin, imperatorin, (+)-heraclenin and xanthoxyletin from the rootbark of A. Paniculata (Schum. et Thonn.) Engl. is reported. From the heartwood of the same plant the coumarins scoparon, xanthotoxin, imperatorin, (+)-heraclenin, 6-hydroxy-7-methoxy-coumarin and
Eight compounds were isolated from the stem bark of the plant Afraegle paniculata. One of them, a dimethyl ether of S-trans-marmin (1), is reported as a new natural product. The structures were determined by comprehensive analyses of their 1D and 2D NMR spectroscopic and HREIMS data. The remaining