Two New Polyhydroxylated Sterol Derivatives from the Sponge Topsentia sp. Collected from the South China Sea
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Further chemical investigation of the marine sponge Topsentio sp. collected from the South China Sea led to the isolation of two new polyhydroxylated sterol derivatives, topsensterol D (1) and 4β-hydroxyhalistanol (2). Their structures were elucidated by detailed analysis of the spectroscopic data including 1D and 2D NMR spectral data. Their cytotoxic activities were evaluated.
Keywordssponge Topsentia sp. polyhydroxylated steroid topsensterol
This work was supported by the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (No. 16KJB350005), the National Natural Science Foundation of China (Nos. 81703411, 41130858, and U1406402-1), the National High Technology Research and Development Program of China (863 Program) (2013AA093001), and the Taishan Scholars Program, China.