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Note | Regular issue | Vol 60, No. 1, 2003, pp.159-166
Published online, 15th November, 2002
DOI: 10.3987/COM-02-9632
■ Six Flavonostilbenes from Gnetum afircanum and Gnetum gnemon

Ibrahim Iliya, Toshiyuki Tanaka,* Zulfiqar Ali, Munekazu Iinuma, Miyuki Furusawa, Ken-ichi Nakaya, Yoshiaki Shirataki, Jin Murata, Dedy Darnaedi, Nobuyasu Matsuura, and Makoto Ubukata

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

Abstract

Six new flavonostilbenes (gnetoflavanols A, B, C, D, E and F) were isolated from the stem of Gnetum africanum and the root of G. gnemon. The structures of the compounds were determined by spectroscopic analysis. The antioxidant activity of the compounds on lipid peroxide inhibition and superoxide scavenging activity were also investigated.