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Two new oligostilbenes with dihydrobenzofuran from the stem bark of Vateria indica |
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| Authors: | Tetsuro Ito Toshiyuki TanakaMunekazu Iinuma Ken-ichi NakayaYoshikazu Takahashi Ryuichi SawaHiroshi Naganawa Veliah Chelladurai |
| Institution: | 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 Survey of Medicinal Plant Unit, Central Council for Research in Ayurveda and Siddha, Tirunelveli, Tamil Nadu 627002, India |
| Abstract: | Two new stilbenoids, vateriaphenols A (1) and B (2), were isolated from the stem bark of Vateria indica along with known 10 stilbenoids (3-12) and bergenin (13). The structures of isolates were established based on spectroscopic analysis. The structures of vateriaphenols A and B were characterized as an octamer and a tetramer of resveratrol, respectively. The spectral properties of the highly condensed vateriaphenol A were also discussed. |
| Keywords: | resveratrol octamer resveratrol tetramer dipterocarpaceae Vateria indica |
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