Chaetoglobosin Vb from Endophytic Chaetomium Globosum: Absolute Configuration of Chaetoglobosins
作者： Min Xue , Qiang Zhang , Jin-Ming Gao , He Li , Jun-Mian Tian
DOI: 10.1002/CHIR.22068
关键词:
摘要: One new cytochalasan alkaloid, chaetoglobosin Vb (1), together with two structurally related known compounds, V (2) and G (3), was isolated from the ethyl acetate extract of a culture endophytic fungus Chaetomium globosum, associated leaves Ginkgo biloba tree. The structures compounds were elucidated by spectroscopic methods including 1D 2D NMR mass spectrometry. absolute configuration (1) established means electronic circular dichroism (CD) spectroscopy, on basis comparison between CD spectrum (+)-1 that calculated time-dependent density functional theory method for simplified model. correlation 1diss, 2, 3 demonstrated biomimetic transformation (3) under mild conditions in chaetoglobosins (1 2). metabolites tested against some phytopathogens. Chirality 24:668–674, 2012. © 2012 Wiley Periodicals, Inc.
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