Secondary mould metabolites: Part 45. Isolation and structure elucidation of sulcatine G, a novel sesquiterpene from Laurilia sulcata

The structure and the relative configuration of sulcatine G 1a, a new sesquiterpene isolated from still cultures of Laurilia sulcata, has been assigned on the basis of 1H and 13C NMR spectroscopy studies; sulcatine G possesses a new ring skeleton which may be derived by contraction of the six-membered ring of a protoilludene sesquiterpenoid.