Ito T, Tanaka T, Ido Y, Nakaya K, Iinuma M, Riswan S
Gifu Prefectural Institiute of Health and Environmental Sciences, Kakamigahara, Japan.
Chem Pharm Bull (Tokyo). 2000 Dec;48(12):1959-63. doi: 10.1248/cpb.48.1959.
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.