Yun-Fen Hua

Publications (3)2.68 Total impact

• Source

  Available from: PubMed Central

  Article: Gibberellin A4 monohydrate.

  Yun-Fen Hua, Hai Yan Li, Lin Lin Ma, Xing Zhang, Zhi Min Jin
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  ABSTRACT: The title compond, C(19)H(24)O(5)·H(2)O, has two gibberellin A4 mol-ecules and two water mol-ecules in the asymmetric unit. The A and B rings have chair conformations, whereas the C and D rings have envelope conformations; the two rings which contain the lactone and carbonyl bridge adopt chair and envelope conformations. The crystal structure is established by O-H⋯O hydrogen bonds and supported by C-H⋯O hydrogen bonds.
  Acta Crystallographica Section E Structure Reports Online 01/2007; 64(Pt 1):o30. · 0.35 Impact Factor
• Article: Structural characterization of a 2-O-acetylglucomannan from Dendrobium officinale stem.

  Yun-Fen Hua, Ming Zhang, Cheng-Xin Fu, Zhang-Hui Chen, Gilbert Yuk Sing Chan
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  ABSTRACT: A heteropolysaccharide obtained from an aqueous extract of dried stem of Dendrobium officinale Kimura and Migo by anion-exchange chromatography and gel-permeation chromatography, was investigated by chemical techniques and NMR spectroscopy, and is demonstrated to be a 2-O-acetylglucomannan, composed of mannose, glucose, and arabinose in 40.2:8.4:1 molar ratios. It has a backbone of (1-->4)-linked beta-d-mannopyranosyl residues and beta-d-glucopyranosyl residues, with branches at O-6 consisting of terminal and (1-->3)-linked Manp, (1-->3)-linked Glcp, and a small proportion of arabinofuranosyl residues at the terminal position. The acetyl groups are substituted at O-2 of (1-->4)-linked Manp and Glcp. The main repeating unit of the polysaccharides is reported.
  Carbohydrate Research 10/2004; 339(13):2219-24. · 2.33 Impact Factor
• Article: [Advances in research on pharmacogenomics].

  Yun-fen Hua, Zhen-huan Ming, Ming Zhang
  Yao xue xue bao = Acta pharmaceutica Sinica 09/2002; 37(8):668-72.