Identification of Chaetoviridin E from a Cultured Microfungus, Chaetomium sp. and Structural Reassignment of Chaetoviridins B and D
Sally R. Kingsland A and Russell A. Barrow A BA Department of Chemistry, College of Science, Australian National University, Canberra, ACT 0200, Australia.
B Corresponding author. Email: rab@anu.edu.au
Australian Journal of Chemistry 62(3) 269-274 https://doi.org/10.1071/CH08259
Submitted: 18 June 2008 Accepted: 29 January 2009 Published: 20 March 2009
Abstract
Chaetoviridins E (1) and B (2) are antibiotic active components isolated from the mycelial extract of an elicited laboratory-cultured coprophilous fungus, Chaetomium sp. obtained from the scat of an emu. The structure of chaetoviridin E was determined to be diastereomeric with the known compound chaetoviridin A, whereas a structure revision of chaetoviridins B and D (10) is proposed, reassigning them to be bicyclic lactol-lactones. The structures of chaetoviridins B and E were determined by detailed spectroscopic analysis, while the revision of chaetoviridin D is through analogy.
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