Issue 0, 1985

Starfish saponins. Part 17. Steroidal glycoside sulphates from the starfish Ophidiaster ophidianus(lamarck) and Hacelia attenuata(gray)

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)

Article information

Article type
Paper

J. Chem. Soc., Perkin Trans. 1, 1985, 655-660

Starfish saponins. Part 17. Steroidal glycoside sulphates from the starfish Ophidiaster ophidianus(lamarck) and Hacelia attenuata(gray)

R. Riccio, C. Pizza, O. Squillace-Greco and L. Minale, J. Chem. Soc., Perkin Trans. 1, 1985, 655 DOI: 10.1039/P19850000655

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