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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Short side chain sterols from the tunicate Polizoa opuntia.

The sterol composition of the Patagonian tunicate Polizoa opuntia was examined, and twenty-four compounds were identified as having either a delta 5, delta 7, or delta 0 nucleus. Two of them, the rare 20-methylpregn-5-en-3 beta-ol and 20-ethylpregn-5-en-3 beta-ol, were previously unreported as natural products from tunicates. These compounds were present only as trace components; therefore, their structures were confirmed by synthesis from suitable precursors and by comparison of the spectral and chromatographic constants of the synthetic and natural compounds.[1]

References

  1. Short side chain sterols from the tunicate Polizoa opuntia. Palermo, J.A., Brasco, M.F., Hughes, E.A., Seldes, A.M., Balzaretti, V.T., Cabezas, E. Steroids (1996) [Pubmed]
 
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