New polyhydroxy sterols from the marine sponge Callyspongia fibrosa (Ridley & Dendly)

@article{Rao2010NewPS,
  title={New polyhydroxy sterols from the marine sponge Callyspongia fibrosa (Ridley \& Dendly)},
  author={T. P. Rao and N. Sarma and Y. Murthy and V. S. S. Kantamreddi and C. Wright and P. Parameswaran},
  journal={Tetrahedron Letters},
  year={2010},
  volume={51},
  pages={3583-3586}
}
Four new polyhydroxylated sterols are isolated from Marine sponge Callyspongia fibrosa collected from the Gulf of Mannar, western Bay of Bengal (India). The structural assignment is based on 1H and 13C NMR spectra. All sterols are based on the known 24S-24-methyl cholesterol 1 which is also isolated, and contain 3β,6β-dihydroxy system and 25-O-acetate as common features (except in the case of sterol 6 that has a Δ25 in the place of 25-OAc). Additional OH substitution is also present at 5α in 4a… Expand
New 18-oxygenated polyhydroxy steroid from a South China Sea soft coral Sarcophyton sp.
Porifera (Sponges)–3
Marine natural products.
Antiplasmodial Natural Products
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