Oxygenated 4‐Methylidene Sterols from the South China Sea Sponge Theonella swinhoei
- 15 June 2010
- journal article
- research article
- Published by Wiley in Helvetica Chimica Acta
- Vol. 93 (6) , 1120-1126
Abstract
Two new O‐bearing 4‐methylidene sterols, 9α‐hydroxy‐15‐oxoconicasterol (1) and 8β‐hydroxy‐B‐norconicasta‐6α‐aldehyde (2), were isolated from the EtOH extract of the marine sponge Theonella swinhoei collected from the South China Sea. Their structures were elucidated by spectroscopic data and comparison with known compounds. In addition, spectroscopic data reported for the known 4‐methylidene sterol 7α‐hydroxyconicasterol (3) were revised.Keywords
This publication has 14 references indexed in Scilit:
- Strategies and Tools for Structure Determination of Natural Products Using Modern Methods of NMR SpectroscopyChemistry & Biodiversity, 2005
- Diverse metabolites of coral reef organismsPure and Applied Chemistry, 2005
- 7α-Hydroxytheonellasterol, a Cytotoxic 4-Methylene Sterol from the Philippines Sponge Theonella swinhoeiJournal of Natural Products, 2000
- Bioactive secondary metabolites from Okinawan sponges and tunicates2000
- Swinhosterols A−C, 4-Methylene Secosteroids from the Marine Sponge Theonella swinhoeiJournal of Natural Products, 1997
- Structures of nine oxygenated 4-methylene sterols from Hachijo marine sponge Theonella swinhoeiSteroids, 1995
- Structure and Absolute Stereochemistry of Bisconicasterone from the Marine Sponge Theonella swinhoeiChemistry Letters, 1994
- Marine Natural Products. XXX. Two New 3-Keto-4-methylene Steroids, Theonellasterone and Conicasterone, and a Diels-Alder Type Dimeric Steroid Bistheonellasterone, from the Okinawan Marine Sponge Theonella swinhoei.Chemical and Pharmaceutical Bulletin, 1992
- Sterols in marine invertebrates. 22. Isolation and structure elucidation of conicasterol and theonellasterol, two new 4-methylene sterols from the Red Sea sponges Theonella conica and Theonella swinhoeiThe Journal of Organic Chemistry, 1981
- Carbon-13 nuclear magnetic resonance spectra of hydroxy steroidsThe Journal of Organic Chemistry, 1976