New variotin analogues from Aspergillus viridi-nutans.
Chhabra, S. C.
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Besides the antifungal agents variotin (1), wasabidienone B(0) (4), and phomaligin A (5), two new but inactive metabolites, viriditin (2) and O-methylviriditin (3), were isolated from extracts of the culture filtrate of liquid cultures of a strain of Aspergillus viridi-nutans. In addition, wasabidienone B(1) (6) was isolated and characterized by spectroscopy.