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Biologically active glycosides from asteroidea, XVIII.1H-NMR spectroscopy and biological activities of polyhydroxylated steroids from the starfishAsterina pectinifera Müller et Troschel

✍ Scribed by Higuchi, Ryuichi ;Noguchi, Yuko ;Komori, Tetsuya ;Sasaki, Takuma

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
544 KB
Volume
1988
Category
Article
ISSN
0947-3440

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✦ Synopsis

The acetates of polyhydroxylated steroids obtained from the starfish .4sieririci prciinifrru Miillcr ct Troschcl were studied by 'H-N M R spectroscopy. The 'H-NMK spectra of five kinds ofacctates or polyhydroxylated cholestanes were measured in deuteriochloroform and deuteriopyridine solutions and then compared. Marked diflerences wcre obscrvcd between the spcctra obtained in both solvcnts. The spcctra in deuteriopyridinc were morc useful than thosc in dcutcriochlorororm in providing information on the structurc of ihc parent polyhydroxylatcd cholestanes. The isolation and structurcs of thc two ncw polyhydroxylated cholestanes I and 8 are also described. Moreover. thc antitumor activities of some polyhydroxylated steroids from this starfish were examined.

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