Quassinoids from Eurycoma longifolia

Le Thi Huyen, Nguyen Xuan Nhiem, Vu Kim Thu, Bui Huu Tai, Hoang Le Tuan Anh, Pham Hai Yen, Do Thi Trang, Chau Van Minh, Phan Van Kiem


By various chromatographic separations, three quassinoids, pasakbumin-C (1), 13α,21-epoxyeurycomanone (2), and eurylactone A (3) were isolated from the methanol extract of the roots of E. longifolia. Their structures were determined by 1D-NMR, 2D-NMR and in comparison with literature data.


Eurycoma longifolia; quassinoids

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