Secondary mould metabolites. Part 16. Stemphyltoxins, new reduced perylenequinone metabolites from Stemphylium botryosum var. Lactucum
- 1 January 1986
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 3,p. 525-530
- https://doi.org/10.1039/p19860000525
Abstract
The structure and stereochemistry of Stemphyltoxins I–IV (1)–(4), four epoxy derivatives of reduced perylenequinones isolated from the fungus Stemphylium botryosum var. Lactucum, have been elucidated, mainly on the basis of n.m.r. evidence. A further metabolite, stemphyperylenol (5), is a hexahydro-1,4,7,10-tetrahydroxyperylene-3,9-quinone, a structure which suggests an unusual head-to-tail biosynthetic coupling of two pentaketide units.This publication has 0 references indexed in Scilit: