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

Chemistry of Natural Compounds
2011.0

Abstract

A new cyclic heptapeptide containing -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.

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