Isolation of Spirastrellolides A and B from a Marine Sponge Epipolasis sp. and Their Cytotoxic Activities

Isolation of Spirastrellolides A and B from a Marine Sponge <i>Epipolasis</i> sp. and Their Cytotoxic Activities Metabolites from the marine sponge Epipolasis kushimotoensis. Stellettins L and M, Cytotoxic Isomalabaricane-Type Triterpenes, and Sterols from the Marine Sponge Stelletta tenuis Spiculoic Acids A and B, New Polyketides Isolated from the Caribbean Marine Sponge <i>Plakortis </i><i>a</i><i>ngulospiculatus</i> Globostellatic Acids A−D, New Cytotoxic Isomalabaricane Triterpenes from the Marine Sponge <i>Stelletta globostellata</i> Novel Cytotoxic Oxygenated C29 Sterols from the Colombian Marine Sponge <i>Polymastia </i><i>t</i><i>enax</i> Bioactive Isomalabaricane Triterpenes from the Marine Sponge <i>Rhabdastrella </i><i>g</i><i>lobostellata</i> Three New Cytotoxic Metabolites from the Marine Sponge Plakortis halichondrioides Cytotoxic Sphingosine 4-Sulfates from the Sponge <i>Spirastrella </i><i>a</i><i>bata</i> A New Epidioxy Sterol as an Antifouling Substance from a Palauan Marine Sponge, <i>Lendenfeldia </i><i>c</i><i>hondrodes</i>