M. Dos Santos, T. Nagem, L. G. Fonseca e Silva
Dec 1, 2000
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Journal
Magnetic Resonance in Chemistry
Abstract
New prenylated oxanthrones, vismianol A and vismianol B [(1,3,8,10‐tetrahydroxy‐6‐methyl‐4,5‐bis(3‐methylbut‐2‐enyl)anthracen‐9(10H)‐one) (3a and 3c)] were isolated from the roots of Vismia latifolia (Clusiaceae) as a mixture of two enantiomers, in addition to two other known anthraquinones (chrisophanol and physcion). The structures were established by 2D NMR spectroscopic techniques (HMQC, HMBC and NOESY). Copyright © 2000 John Wiley & Sons, Ltd.