The sterols of the freshwater sponges E. fluviatilis and S. lacustris were isolated and characterized by reverse-phase HPLC, silver nitrate-silica gel TLC, mass spectrometry, and 1H NMR. E. fluviatilis and S. lacustris have rather similar sterol compn. and contain almost exclusively Δ5-sterols. Cholesterol is the major sterol. In addn. to the Δ5-sterols, E. fluviatilis contains a small amt. of 24-methyl-5α-cholestan-3β-ol. The C-24 configuration of 24-alkyl sterols was detd. Sterols with the 24β configuration predominate over the 24α epimers. A brief review on uncommon sterols in sponges is also given
Steroids in porifera. Sterols from freshwater sponges Ephydatia fluviatilis (L.) and Spongilla lacustris (L.) Full Text / Manconi, R.; Piccialli, Vincenzo; Pronzato, R.; Sica, D.. - In: COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY. - ISSN 0305-0491. - STAMPA. - 91B:2(1988), pp. 237-245.
Steroids in porifera. Sterols from freshwater sponges Ephydatia fluviatilis (L.) and Spongilla lacustris (L.) Full Text
PICCIALLI, VINCENZO;
1988
Abstract
The sterols of the freshwater sponges E. fluviatilis and S. lacustris were isolated and characterized by reverse-phase HPLC, silver nitrate-silica gel TLC, mass spectrometry, and 1H NMR. E. fluviatilis and S. lacustris have rather similar sterol compn. and contain almost exclusively Δ5-sterols. Cholesterol is the major sterol. In addn. to the Δ5-sterols, E. fluviatilis contains a small amt. of 24-methyl-5α-cholestan-3β-ol. The C-24 configuration of 24-alkyl sterols was detd. Sterols with the 24β configuration predominate over the 24α epimers. A brief review on uncommon sterols in sponges is also givenI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
