Four new C-glucopyranosides of resveratrol oligomers, hemsleyanosides A-D, were isolated from the bark of Shorea hemsleyana. The structures were established on the basis of spectroscopic evidence, including 1H-1H and 1H-13C long-range couplings and nuclear Overhauser effect experiments in the NMR spectrum.
structure elucidation, Shorea hemsleyana, Dipterocarpaceae, stilbenoid, C-glucopyranoside
NCBI PubMed ID: 11145151Publication DOI: 10.1248/cpb.48.1959Journal NLM ID: 0377775Publisher: Pharmaceutical Society Of Japan
Correspondence: YHY06063@nifty.ne.jp
Institutions: Herbarium Bogoriense, The Indonesian Institute of Science, Research and Development Center for Biology, Bogor, Indonesia, Gifu Prefectural Institiute of Health and Environmental Sciences, Kakamigahara, Japan
Methods: 13C NMR, 1H NMR, NMR-2D, FAB-MS, UV, extraction, optical rotation measurement, CC, HR-FAB-MS, PTLC, VLC