Chemistry of Natural Compounds

, Volume 47, Issue 5, pp 786–788 | Cite as

A new cyclic peptide from the marine fungal strain Aspergillus sp. AF119

  • Shaosong Liu
  • Yuemao Shen

A new cyclic heptapeptide containing γ-aminobutyric acid in the ring, namely unguisin E (1), was isolated from the fermentation culture of Aspergillus sp. AF119. The structure was elucidated by spectroscopic analyses, including 1D and 2D NMR experiments, and HR ESI-Q-TOF mass spectrometry, and by comparison with those reported. Compound 1 was evaluated for its antimicrobial activities by the paper diffusion method.


heptapeptide unguisin E Aspergillus sp. AF119 



This work was financially supported by the Key Grant of the Chinese Ministry of Education (306010) and the 973 Program (2010CB833802).


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Copyright information

© Springer Science+Business Media, Inc. 2011

Authors and Affiliations

  1. 1.Key Laboratory of the Ministry of Education for Cell Biology and Tumor Cell Engineering, School of Life SciencesXiamen UniversityXiamenP. R. China

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