A Highly Conjugated Dihydroxylated C28 Steroid from a Myxobacterium

Journal of Natural Products
2011.0

Abstract

In the course of our search for novel secondary metabolites, the CHCl3-MeOH extract of the novel myxobacterial strain Sorangiineae SBNa008 was shown to be active against human SW480 colon adinocarcinoma cells. Bioassay-guided fractionation of the extract yielded a highly conjugated novel, sterol 9α,11α-dihydroxyergosta-4,6,8(14),22-tetraen-3-one, 1. The structure and the relative stereochemistry of 1 were established from interpretation of spectroscopic data and X-ray crystallography.

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