Abstract
Extracts from the culture fluids of Lentinus lepideus, Leucopaxillus giganteus, Lyophyllum decastes, and Peniophora resinosa were found to contain Me[C[graphic omitted]C]3·CHCH·CH2OH as the major polyacetylene. The first two contained also the corresponding methyl ether, which was synthesised, and the third contained the corresponding aldehyde. The new polyacetylene (+)-Me[CC]3·CH[graphic omitted]CH·CH(OH) Et was isolated from the last culture.
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