Abstract
Humulanes, drimanes, ent-kaurane, lupane, cycloartane, flavanone, flavones and quinol derivatives were isolated from Malagasy Cussonia vantsilana, Helichrysum gymnocephalum, Phyllarthron madagascariense, Gomphocarpus fructicosus, Cinnamosma sp. and C. fragrans, and their structures elucidated by using extensive NMR analysis. A mixture of a few flavones and/or lupane triterpene showed antimicrobial activity against Mycobacterium smegmatis and Pseudomonas aeruginosa.
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