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Structure of aspochracin, an insecticidal metabolite of aspergillus ochraceus

✍ Scribed by Ryotaro Myokei; Akira Sakurai; Ching-Fun Chang; Yoshinori Kodaira; Nobutaka Takahashi; Saburo Tamura

Publisher
Elsevier Science
Year
1969
Tongue
French
Weight
214 KB
Volume
10
Category
Article
ISSN
0040-4039

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✦ Synopsis

Some of the pathogenic fungi causing silkworm muscardines are known to excrete toxins, of which destruxins A and B, insecticidal depsipeptides produced by Metarrhizium anisopliae, have been extensively studied 1) . Further investigation on metabolites of muscardine fungi led us to the isolation of a new toxic peptide named aspochracin from culture medium of Aspergillus ochraceus WILHELM.

Ethyl acetate extract from the culture filtrate of Asp. ochraceus was chromatographed on a silica gel column. The eluate with a solvent system of benzeneethyl acetate-acetone (45:40:15) was further purified by a silica gel column

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