Dehydroconicasterol and aurantoic acid, a chlorinated polyene derivative, from the Indonesian sponge Theonella swinhoei.

@article{Angawi2009DehydroconicasterolAA,
  title={Dehydroconicasterol and aurantoic acid, a chlorinated polyene derivative, from the Indonesian sponge Theonella swinhoei.},
  author={Rihab F. Angawi and Barbara Calcinai and Carlo Cerrano and Henny Adeleida Dien and Ernesto Fattorusso and Fernando Scala and Orazio Taglialatela‐Scafati},
  journal={Journal of natural products},
  year={2009},
  volume={72 12},
  pages={
          2195-8
        }
}
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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