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2010年10月12日

【期刊论文】Two Phaeophytin Type Analogues from Marine Sponge Dysidea sp.

林文翰， Peng Fei JIN ，， Zhi Wei DENG ， Yue Hu PEI ， Wen Han LIN *

Chinese Chemical Letters Vol. 16, No.2, pp 209-211, 2005，-0001，（）：

-1年11月30日

摘要

A new compound named 13b (S)-hydroxy-17c-ethoxypheaophorbide a (2) together with a known compound 17c-ethoxypheaophorbide a (1) were isolated from marine sponge Dysidea sp. collected in South China sea. The structures were elucidated by spectroscopic analysis as well as comparison with those reported in literatures.

Marine sponge， Dysidea sp， 17c-ethoxypheaophorbide a， 13b(， S)， -hydroxy-17c-ethoxypheaophorbide a.，

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2010年10月12日

【期刊论文】Steroids from the soft coral Dendronephthya sp.

林文翰， Guoqiang Li b， c， Zhiwei Deng d， Huashi Guan b， Leen van Ofwegen e， Peter Proksch f， Wenhan Lin a， *

Steroids 70(2005)13-18，-0001，（）：

-1年11月30日

摘要

Fifteen steroids were isolated from the soft coral Dendronephthya sp., of which five are determined as new compounds, namely (22E)-3-O-β-formylcholest-5,22-diene (1), (22E)-3-O-β-formyl-24-methyl-cholest-5,22-diene (2), 2-ethoxycarbonyl-2-β-hydroxy-A-nor-cholest-5-ene-4-one (3), (22E)-2-ethoxycarbonyl-2-β-hydroxy-A-nor-cholest-5,22-diene-4-one (4), and (22E)-2-ethoxycarbonyl-2-β-hydroxy-24-mthyl-Anor-cholest-5,22-diene-4-one (5). 1 and 2 belonged to 3-O-formylated cholesterol analogues, and 3 to 5 are unique ring A-contracted steroids.Their structures were elucidated by extensive 2D NMR in association with IR, MS analysis.

Dendronephthya sp.，， 3-Formyloxysterols， A-nor-steroids

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北京大学，北京

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