Seven new marine polyhydroxysteroids, (1)–(7), of which four have a 27-norcholestane skeleton, have been isolated by droplet counter-current chromatography and reversed-phase h.p.l.c. from the starfish Archaster typicus. Characterization was accomplished by FAB m.s., and 1H and 13C n.m.r. spectroscopy including two-dimensional proton–carbon chemical-shift correlation (direct and long range) n.m.r. spectroscopy.
R. Riccio, O. S. Greco, L. Minale, D. Laurent and D. Duhet, J. Chem. Soc., Perkin Trans. 1, 1986, 665 DOI: 10.1039/P19860000665
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