(1) Pacific Institute of Bioorganic Chemistry, Far-East Division, Russian Academy of Sciences, 690022 Vladivostok, pr. 100 Years to Vladivostok, 159
Abstract:
NMR spectroscopy, capillary GLC, and GLC-MS are used to study the composition of free and sulfated sterols from the far-east starfishLeptasterias alaskensis asiatica(Fischer) andL. Fisheri(Djakonov). The total free sterols of both species are shown to have similar qualitative and quantitative compositions and contain mainly7-sterols. Sterol sulfate fractions contain cholesterol sulfate as the main component but differ in the ratios of5:0:7-sterol derivatives. Possible reasons for these differences are discussed. A new steroid, 3-hydroxycholest-5-en-7-one sulfate, was isolated.