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Dehydroconicasterol and Aurantoic Acid, a Chlorinated Polyene Derivative, from the Indonesian Sponge Theonella swinhoei

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journal contribution
posted on 28.12.2009, 00:00 by Rihab F. Angawi, Barbara Calcinai, Carlo Cerrano, Henny Adeleida Dien, Ernesto Fattorusso, Fernando Scala, Orazio Taglialatela-Scafati
The chlorinated polyene aurantoic acid (1) and the 4-methylene sterol dehydroconicasterol (2) were isolated from the Indonesian sponge Theonella swinhoei, and their structures were elucidated by interpretation of spectroscopic data. Aurantoic acid is a unique member in the class of naturally occurring conjugated polyene derivatives, while dehydroconicasterol is the likely biogenetic precursor of the major Theonella 4-methylene sterols.

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