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Paper | Regular issue | Vol 68, No. 8, 2006, pp.1617-1630
Published online, 8th June, 2006
DOI: 10.3987/COM-06-10769
Stilbenoids with One Epoxy Group from Cotylelobium lanceolatum

Tetsuro Ito,* Zulfiqar Ali, Toshiyuki Tanaka, Ken-ichi Nakaya, Jin Murata, Dedy Darnaedi, and Munekazu Iinuma

*Gifu Prefectrual Institute of Health and Environmental Sciences, 1-1 Nakafudogaoka, Kakamigahara, Gifu 504-0838, Japan


A phytochemical investigation of an acetone extract of Cotylelobium lanceolatum stem resulted in the isolation of two orange pigments-two stilbene trimer derivatives, cotylelophenols D and E and an artifact derivative, cotylelophenol F. The structure and relative configuration were confirmed by 1D and 2D NMR spectral data. Cotylelophenols D and E are the first examples of stilbene oligomers bearing an epoxy group. The biogenetic relationships between the isolates are also discussed.