Specificities of enzymatic prenylation and chromanation in the biosynthesis of aspulvinone pigments in Aspergillus terreus
Abstract
Unambiguous syntheses of key intermediates establish that the biosynthesis of aspulvinone (6) from (1)via(3) in Aspergillus terreus proceeds by selective mono-prenylation of (1) leading to intermediate (2a) and by selective ‘chromanation’ of (3) leading to intermediate (4)