SPONGIOLACTONE, AN UNUSUAL β-LACTONE DITERPENE ISOVALERATE BASED ON A NEW REARRANGED SPONGIANE SKELETON FROM SPONGIONELLA GRACILIS.

Article abstract of DOI:10.1016/S0040-4039(00)95546-1

From a further investigation of the extractives of the mediterranean sponge Spongionella gracilis a new diterpene isovalerate, spongiolactone (1), was isolated and its stereostructure elucidated on the basis of chemical and physicochemical evidence.