Autor: | I. I. Kapustina, O. P. Moiseenko, Valentin A. Stonik, Ljudmila P. Ponomarenko |
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Rok vydání: | 2001 |
Předmět: |
Chromatography
biology Chemistry medicine.medical_treatment Starfish Plant Science General Chemistry Leptasterias Nuclear magnetic resonance spectroscopy biology.organism_classification General Biochemistry Genetics and Molecular Biology Sterol Steroid chemistry.chemical_compound Sulfation Biochemistry polycyclic compounds medicine lipids (amino acids peptides and proteins) Composition (visual arts) Sulfate |
Zdroj: | Chemistry of Natural Compounds. 37:515-519 |
ISSN: | 0009-3130 |
DOI: | 10.1023/a:1014856530108 |
Popis: | 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 mainlyΔ7-sterols. Sterol sulfate fractions contain cholesterol sulfate as the main component but differ in the ratios ofΔ5:δ0:δ7-sterol derivatives. Possible reasons for these differences are discussed. A new steroid, 3β-hydroxycholest-5-en-7-one sulfate, was isolated. |
Databáze: | OpenAIRE |
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