Jaspiferins H–J, New Isomalabaricane-Type Terpenoids from the South China Sea Marine Sponge Jaspis stellifera

Three new isomalabaricane-type terpenoids, jaspiferins H (1), I (2), and J (3), were isolated from the marine sponge Jaspis stellifera collected from the South China Sea. The structures of the new metabolites were elucidated on the basis of extensive spectroscopic methods.