Journal
PHYTOCHEMISTRY
Volume 59, Issue 8, Pages 833-837Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0031-9422(01)00480-0
Keywords
Eurycoma longifolia Jack; Simaroubaceace; bitter principles; spectroscopy; X-ray crystallography; quassinoids; eurycolactone D; eurycolactone E; eurycolactone F
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Three quassinoids, eurycolactone D (1), eurycolactone E (2) and eurycolactone F (3) were isolated from the roots of Eurycoma longifolia Jack, The structures of 1-3 were elucidated by spectroscopic methods, and that of 3 was further confirmed by X-ray crystallography. The known quassinoids, laurycolactone B (4) and eurycomalactone (5) were also identified. (C) 2002 Elsevier Science Ltd. All rights reserved.
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