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Guaiane sesquiterpenoids (1, 2) were isolated from the gorgonian Menella woodin and their structures elucidated by extensive spectroscopic analysis. A complex approach was used to determine the configurations of the asymmetric centres in these natural products, based on the application of Mosher’s method, and the calculation of stable conformations of the rings along with a comparison of experimental...
Four new polyoxygenated sterol derivatives (1–4) along with the compounds (5–7) previously known from other biological sources were isolated from the gorgonian Menella woodin, collected from the Vietnamese waters. Structures of 1–4 were elucidated by the detailed NMR spectroscopic and mass-spectrometric analyses as well as comparison with those reported in literature data. Compounds 1, 4, and 6 decrease...
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