Free and Sulfated Sterols of Two Far-East Leptasterias Starfish
Authors: Kapustina, I.I.; Ponomarenko, L.P.; Moiseenko, O.P.; Stonik, V.A.
Source: Chemistry of Natural Compounds, Volume 37, Number 6, November 2001 , pp. 515-519(5)
Abstract:NMR spectroscopy, capillary GLC, and GLC-MS are used to study the composition of free and sulfated sterols from the far-east starfish Leptasterias alaskensis asiatica (Fischer) and L. Fisheri (Djakonov). The total free sterols of both species are shown to have similar qualitative and quantitative compositions and contain mainly Δ^7-sterols. Sterol sulfate fractions contain cholesterol sulfate as the main component but differ in the ratios of Δ^5: ^0: ^7-sterol derivatives. Possible reasons for these differences are discussed. A new steroid, 3-hydroxycholest-5-en-7-one sulfate, was isolated.
Document Type: Regular Paper
Affiliations: Pacific Institute of Bioorganic Chemistry, Far-East Division, Russian Academy of Sciences, 690022, Vladivostok, pr. 100 Years to Vladivostok, 159 email@example.com
Publication date: November 1, 2001