New Ophiuroid-Type Steroids from the Starfish Pteraster tesselatus

Two new steroid sulfates have been isolated and a new minor steroid sulfate identified from the starfish Pteraster tesselatus. The structures of the new steroids were established on the basis of spectroscopic data as the 3,21-disulfate of (20R,25R)-24-methyl-5α-cholest-24(28)-ene-2β,3α,21,26-tetraol...

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Bibliographic Details
Published in:Journal of natural products (Washington, D.C.) D.C.), 1998-11, Vol.61 (11), p.1423-1426
Main Authors: Levina, Eleonora V, Andriyaschenko, Polina V, Kalinovsky, Anatoly I, Stonik, Valentin A
Format: Article
Language:English
Subjects:
Marine
Pteraster tesselatus
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Summary:Two new steroid sulfates have been isolated and a new minor steroid sulfate identified from the starfish Pteraster tesselatus. The structures of the new steroids were established on the basis of spectroscopic data as the 3,21-disulfate of (20R,25R)-24-methyl-5α-cholest-24(28)-ene-2β,3α,21,26-tetraol (1) and the 2,21-disulfate of (20R,25R,S)-cholest-5-ene-2β,3α,21,26-tetraol (2). The new minor steroid proved to be the 3,21-disulfate of (20R,25R)-5α-cholestane-2β,3α,21,26-tetraol (3). All the compounds have structural features characteristic for ophiuroid-type steroids.
ISSN:0163-3864
1520-6025
DOI:10.1021/np9801864