R.W.M. van Soest
- New Anti-inflammatory Sterols from the Red Sea Sponges Scalarispongia aqabaensis and Callyspongia siphonella
- Natural Product Communications
- Volume | Issue number
- 5 | 1
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
Bioassay-guided fractionation of the anti-inflammation fractions of the Red Sea sponges Scalarispongia aqabaensis and Callyspongia siphonella yielded two new sterols from chloroform fractions of methanol extracts, namely scalaristerol (5α,8β- dihydroxycholest-6-en-3β -ol) (1) from Scalarispongia aqabaensis, and callysterol (ergosta-5,11-dien-3β-ol) (2) from Callyspongia siphonella. Structure determination was based on extensive NMR studies and mass spectrometry. The antiinflammatory activity of compounds 1 and 2 was assessed using the rat-hind paw edema method and by study of their effect on the release of O2 - and TXB2 from LPS-activated rat neonatal microglia.
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