20-isosterols from the marine bivalve Macoma balthica.
A fraction of 20-isosterols has been isolated from the Baltic Sea bivalve Macoma balthica. The main component of this fraction, (20S)-cholest-5-en-3 beta-ol, has been characterized by 300 MHz nuclear magnetic resonance spectroscopy. 20-Isosterols in M balthica probably originate from sea-bottom sediments, an important component of a diet of the animal studied.
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Institute of Oceanology, Polish Academy of Sciences, Sopot.
D000107:Acetylation; D000818:Animals; D002774:Cholestadienes / Q000302:isolation & purification; D002782:Cholestenes / Q000302:isolation & purification*; D002784:Cholesterol / Q000302:isolation & purification; D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid; D008401:Gas Chromatography-Mass Spectrometry; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D008974:Mollusca / Q000032:analysis*
D002774:Cholestadienes; D002782:Cholestenes; D002784:Cholesterol