Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Two New Bibenzyl Glucosides from Dendrobium chrysotoxum

  • Dong, Fa-Wu (College of Life Sciences, Anhui University) ;
  • Luo, Huai-Rong (State Key Laboratory of Phytochemistry and Plant Resource in West China, Kunming Institute of Botany, Chinese Academy of Sciences) ;
  • Wan, Qin-Li (State Key Laboratory of Phytochemistry and Plant Resource in West China, Kunming Institute of Botany, Chinese Academy of Sciences) ;
  • Xu, Feng-Qing (State Key Laboratory of Phytochemistry and Plant Resource in West China, Kunming Institute of Botany, Chinese Academy of Sciences) ;
  • Fan, Wei-Wei (State Key Laboratory of Phytochemistry and Plant Resource in West China, Kunming Institute of Botany, Chinese Academy of Sciences) ;
  • Wang, Kai-Jin (College of Life Sciences, Anhui University) ;
  • Li, Ning (College of Life Sciences, Anhui University) ;
  • Hu, Jiang-Miao (State Key Laboratory of Phytochemistry and Plant Resource in West China, Kunming Institute of Botany, Chinese Academy of Sciences)
  • Received : 2011.11.04
  • Accepted : 2012.04.02
  • Published : 2012.07.20
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Abstract

Two new bibenzyl glucosides, 3,3',4',5-tetramethoxybibenzyl-4-O-${\beta}$-D-glucopyranoside (1) and 3,4,4',5-tetramethoxybibenzyl-3'-O-${\beta}$-D-glucopyranoside (2), together with five known ones, chrysotobibenzyl (3), erianin (4), chrysotoxine (5), gigantol (6) and tristin (7) were isolated from the stems of Dendrobium chrysotoxum. The structures of those compounds were elucidated by extensive spectroscopic analysis. Moreover, compounds 1-7 were assessed for inhibitory activity of two enzymes-AChE (acetylcholine esterase) and BChE (butyrylcholine esterase).

Keywords

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