(−)<i>-</i>Duryne and Its Homologues, Cytotoxic Acetylenes from a Marine Sponge <i>Petrosia</i> sp.
作者:Yuki Hitora、Kentaro Takada、Shigeru Okada、Yuji Ise、Shigeki Matsunaga
DOI:10.1021/np200271n
日期:2011.5.27
Six linear acetylenes, (-)-duryne (1) and (-)-durynes B-F (2-6), were isolated from the marine sponge Petrosia sp. Their structures were elucidated by NMR and tandem FABMS analyses. The positions of the olefinic bonds were confirmed by ozonolysis experiments, and the absolute configurations were determined by the modified Mosher's method. Compound 1 was found to be the enantiomer of duryne, a previously reported sponge metabolite. Compounds 1-6 show cytotoxicity against HeLa cells with IC(50) values between 0.08 and 0.50 mu M.