A fungal fusicoccane with ophiobolane-type functionalities: structure determination by n.m.r. spectroscopy aided by biosynthetic incorporation of [1,2-13C2]acetate
Abstract
The structure of a diterpene aldehyde isolated from a fungus provisionally identified as Cercospora traversiana Saccardo was elucidated as (1) mainly by extensive 1H and 13C n.m.r. studies and confirmed by the labelling patterns of the substance enriched with [1,2-13C2]acetate.