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Identification de stérols à chaîne latérale oxygénée dans une éponge de l'espèce Hyrtios

✍ Scribed by Patrick Koch; Carl Djerassi; Vijai Lakshmi; Francis J. Schmitz

Publisher: John Wiley and Sons
Year: 1983
Tongue: German
Weight: 261 KB
Volume: 66
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19830660806

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✦ Synopsis

Thirty‐two sterols are identified in the sponge Hyrtios sp. In addition to fourteen monohydroxylated compounds, the sterol fraction contains eight functionalized sidechain sterols, three of them new: 3 β‐hydroxy‐24‐norchol‐5‐en‐23‐al (19), (22‐trans)‐3 β‐hydroxycholest‐5, 22‐dien‐24‐one (20) and (22__R__, 23__R__, 24__S__) or (22__S__, 23__S__, 24__S__)‐ 22,23‐epoxy‐24‐methylchoest‐5‐en‐3 β‐ol (24). The probable biological origin, rather than artifact production, of these undescribed components is discussed.

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✍ Claude Delseth; R. M. K. Carlson; Carl Djerassi; Timothy R. Erdman; Paul J. Sche 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 German ⚖ 473 KB

**Identification of short side chain sterols in the sponge __Damiriana hawaiiana__** The steroidal composition of the sponge __Damiriana hawaiiana__ is examined. Twenty‐seven components are identified. In addition to the C~26~‐C~29~, Δ^5^‐mono and diunsaturated sterols, the sponge contains sterols