METACHROMINS J AND K,NEW SESQUITERPENOIDS FROM MARINE SPONGE SPONGIA SPECIES

摘要

Two new cytotoxic sesquiterpenoids,metachromins J(1)and K(2),have been isolated from an Okinawan marine sponge Spongia sp.(SS-1037).The structures of 1 and 2 were elucidated on the basis of the spectroscopic data.Marine sponges contain a number of unique secondary metabolites with a diversity of biological activities.Marine sponges of the genus Spongia are a rich source of terpenoids and polyketides.Our recent study of extracts of an Okinawan sponge Spongia sp.