Starfish saponins. Part 17. Steroidal glycoside sulphates from the starfish Ophidiaster ophidianus(lamarck) and Hacelia attenuata(gray)
- 1 January 1985
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 4,p. 655-660
- https://doi.org/10.1039/p19850000655
Abstract
The major sulphated asterosaponins, ophidianosides B, C, E, and F, isolated from the Mediterranean starfish Ophidiaster ophidianus, have been completely characterized. The more polar compounds, ophidianosides B (1) and C(2), are pentaglycosides and contain a steroidal aglycone with 26 carbon atoms [3β,6α,20ξ-trihydroxy-24-nor-5α-cholest-9(11)-en-23-one (24-northornasterol A)] already found in saponins-derived from Hacelia attenuata. The ophidianoside E was found to be thornasteroside A, first obtained from Acanthaster planci. Ophidianoside F (4) contains the same oligosaccharide moiety as ophidianoside C (2) and the usual C27 aglycone, thornasterol A [i.e. 3β,6α,20ξ-trihydroxy-5α-cholest-9(11)-en-23-one]. The two major saponins from the starfish Hacelia attenuata, which were reported to contain the 24-northornasterol A as the aglycone, have been shown to be identical with ophidianosides B (1) and C (2)This publication has 1 reference indexed in Scilit:
- The Sterols of Marine Invertebrates: Composition, Biosynthesis, and MetabolitesPublished by Elsevier ,1978