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Minor and trace sterols from marine invertebrates 29. (22E)-ergosta-5,22,25-trien-3β-ol and (22E,24R)-24,26-dimethylcholesta-5,22,25(27)-trien-3β-ol. Two new marine sterols from the sponge Pseudaxinella lunacharta

✍ Scribed by U. Sjöstrand; J.M. Kornprobst; Carl Djerassi

Book ID: 118978849
Publisher: Elsevier Science
Year: 1981
Tongue: English
Weight: 439 KB
Volume: 38
Category: Article
ISSN: 0039-128X
DOI: 10.1016/0039-128x(81)90070-2

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## Abstract The steroidal components of a Red Sea sponge, __Biemna fortis__, were fractionated through reversed phase HPLC. and analyzed by a combination of physical methods, including high resolution GC./MS. and 360 MHz ^1^H‐NMR. The sponge contains five conventional Δ^5^‐sterols, **1a**–**c**, **