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New resveratrol oligomers in the stem bark of Vatica pauciflora |
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| Authors: | Tetsuro Ito Toshiyuki TanakaMunekazu Iinuma Ibrahim IliyaKen-ichi Nakaya Zulfiqar AliYoshikazu Takahashi Ryuichi SawaYoshiaki Shirataki Jin MurataDedy Darnaedi |
| Affiliation: | a Gifu Prefectural Institute of Health and Environmental Sciences, Naka-fudogaoka, Kakamigahara, Gifu 504-0838, Japan b Gifu Pharmaceutical University, 5-6-1 Mitahora-higashi, Gifu 502-8585, Japan c Institute of Microbial Chemistry, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan d Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai Sakado, Saitama 350-0295, Japan e Botanical Gardens, Koishikawa, Graduate School of Science, University of Tokyo, 3-7-1, Hakusan, Bunkyo-Ku, Tokyo, 112-0001, Japan f Indonesian Institute of Sciences, Jalan Ir. H. Juanda 13, Bogor 16122, Indonesia |
| Abstract: | Five new resveratrol oligomers; pauciflorols A-C (1-3), isovaticanols B (6) and C (8), and three new oligostilbene glucosides; pauciflorosides A (11), B (13), C (14), were isolated from the stem bark of Vatica pauciflora (Dipterocarpaceae) together with known 17 resveratrol oligomers (4, 5, 7, 9, 10, 12 and 15-25) and bergenin (26). The structures of isolates were established on the basis of detailed spectroscopic analysis. The typical and characteristic spectral properties of some resveratrol oligomers were also discussed. |
| Keywords: | Vatica pauciflora resveratrol oligomer dipterocarpaceae structure elucidation spectral property |
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