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Chemical examination of the Chinese marine sponge Xestospongia testudinaria resulted in the isolation and characterization of twelve new brominated acetylenic acids, namely xestospongienols A–L (1a–1d, 2a–2d, and 3a–3d), together with the known analog 4. The structures of xestospongienols A–L were determined on the basis of 1D‐ and 2D‐NMR, IR, and MS analysis in association with the modified Mosher...
Chemical examination of the Chinese marine sponge Xestospongia testudinaria led to the isolation of 39 new brominated polyunsaturated compounds, which were designated with the trivial names xestospongienes A–Z and Z 1 –Z 13 . The structures of these compounds were elucidated by analyzing extensive spectroscopic (IR, MS, 1D, and 2D NMR) data and the results from CD spectral assignment,...
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