Studies on chemical constituents of the marine sponge Topsentia sp. from the South China Sea / 中国海洋药物

ABSTRACT

Six organic compounds were isolated from the marine sponge Topsentia sp. collected from the South China Sea. Their chemical structures were identified by 1H-NMR, 13C-NMR,IR,MS and GC-MS as cholesterol(Ⅰ); 24-ethylidenecholest-5-en-3?-ol(Ⅱ); phenylacetic acid(Ⅲ); 4-hydroxybenzaldehyde(Ⅳ);indole-3-carboxaldehyde(Ⅴ); thymine(Ⅵ).