Structure of Ovarian Asterosaponin-4, an Inhibitor of Spontaneous Oocyte Maturation from the Starfish Asterias amurensis
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概要
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The ovary of the starfish Asterias amurensis contains various kinds of steroidal saponins. The structure of one of the major saponins, designated ovarian asterosaponin4, was elucidated by several chemical modifications and spectroscopic analyses. The structure was formulated as 20α-hydroxy-6α-O-{6-deoxy-β-D-glucopyranosyl(1→2)-β-D-glucopyranosyl(1→4)-[6-deoxy-β-D-glucopyranosyl (1→2)]-β-D-xylopyranosyl(1→3)-6-deoxy-β-D-glucopyranosyl}-3β-sulfo-oxy-5α-cholesta-9(11), 24-diene. Ovarian asterosaponin-4 at 125 μg/ml inhibited spontaneous oocyte maturation of the starfish, and the inhibition could be overcome by adding 1×10-6M of 1-methyladenine, the maturation-inducing substance of the starfishes, to the oocyte.
- 社団法人 日本農芸化学会の論文
著者
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IKEGAMI Susumu
Department of Agricultural Chemistry, University of Tokyo
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OKANO Keiju
Department of Agricultural Chemistry, The University of Tokyo
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OKANO Keiju
Department of Physiology, Teikyo University School of Medicine
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OHKAWA Nobuhiko
Department of Agricultural Chemistry, University of Tokyo
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