Abstract
Two novel steroidal 24-O-xylosides, designated as rathbuniosides R(1) (1) and R(2) (2), and the known amurensoside A (3) and 3-O-sulfomarthasterone (4) have been isolated from the starfish Asterias rathbuni. The structures of all the compounds were determined from their spectroscopic data, including one- and two-dimensional NMR methods. The compounds 1 and 4 inhibit the cell division of fertilized sea urchin eggs at doses of 7.0 x 10(-5) and 2.9 x 10(-5) M, respectively.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Cell Division / drug effects*
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Chromatography, High Pressure Liquid
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Dose-Response Relationship, Drug
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Female
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Glycosides / chemistry
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Glycosides / isolation & purification*
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Glycosides / pharmacology
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Magnetic Resonance Spectroscopy
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Marine Toxins / pharmacology*
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Molecular Structure
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Ovum / cytology
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Ovum / drug effects
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Ovum / metabolism
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Sea Urchins
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Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
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Starfish / chemistry*
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Steroids / chemistry
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Steroids / isolation & purification*
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Steroids / pharmacology
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Structure-Activity Relationship
Substances
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3-O-sulfomarthasterone
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Glycosides
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Marine Toxins
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Steroids
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amurensoside A
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rathbunioside R1
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rathbunioside R2