Vatdiospyroidol (1), a novel cytotoxic resveratrol tetramer, was isolated from the stems of Vaticadiospyroides Sym. (Dipterocarpaceae) by bioassay-guided fractionation monitored with a human
oral epidermoid carcinoma (KB) cell line. Another novel resveratrol tetramer, vaticaphenol A (2),
was obtained as a noncytotoxic constituent, along with the known compounds, bergenin, betulin,
betulinic acid, mangiferonic acid, and (E)-resveratrol 3-O-β-d-glucopyranoside. The structures of
compounds 1 and 2 were elucidated by spectral analysis, including 1D and 2D NMR experiments,
and by molecular modeling.
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Seo, Eun-Kyoung; Chai, Heebyung; Constant, Howard L.; Santisuk, Thawatchai; Reutrakul, Vichai; Beecher, Christopher W. W.; et al. (2016). Resveratrol Tetramers from Vaticadiospyroides. ACS Publications. Collection. https://doi.org/10.1021/jo9902087