Structural revision and synthesis of LL-D253α and related chromanone fungal metabolites
Abstract
The structure of LL-D253α, a Chromanone metabolite of Phoma pigmentivora has been revised by analysis of the 1H-coupled 13C NMR spectrum to 7-hydroxy-8-(2′-hydroxyethyl)-5-methoxy-2-rnethyl-chroman-4-one. This has been further established by the synthesis of the revised and previously proposed structures of LL-D253α.