Flavanes from Dracaena cambodiana

Jian Liu, Hao-Fu Dai, Jiao Wu, Yan-Bo Zeng, Wen-Li Mei
2008 Zeitschrift für Naturforschung. B, A journal of chemical sciences  
Two new flavanes, (2S)-4′ ,7-dihydroxy-6,8-dimethylflavane (1), and (2S)-5,7-dihydroxy-4′-methoxy- 8-methylflavane (2), together with five known flavanes, (2S)-3′ ,7-dihydroxy-4′-methoxy-8- methylflavane (3), (2R)-4′,7-dihydroxy-8-methylflavane (4), (±)-3′,7-dihydroxy-4′-methoxyflavane (5), (±)-4′,7-dihydroxy-3′-methoxyflavane (6), and (2S)-4′,7-dihydroxyflavane (7), were isolated from the stem of Dracaena cambodiana. Their structures were determined by spectroscopic techniques (UV, IR, 1D and
more » ... es (UV, IR, 1D and 2D NMR). Their antimicrobial activities were preliminarily examined by the filter paper disc agar diffusion method.
doi:10.1515/znb-2008-1210 fatcat:53xpcsgdhrgdvduxjnmvya6xb4