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Steroid glycosides from the starfishEchinaster sepositus

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Abstract

Two new steroid glycosides, which have been called echinasterosides B1 and B2 have been isolated from the starfishEchinaster sepositus. Using chemical transformations (methylation, hydrolysis) and also spectral methods (1H and13C NMR spectroscopy and GLC-MS) the complete chemical structure of B1 has been established as 15α-acetoxy-5α-cholestane-3β,4β,6β,8,24ξ-pentaol 24-O[O-(2)O÷ methyl-β-D-xylopyranosyl)-(1→3)-α-L-arabinofuranoside] (I) and that of glycoside B2 as 5α-cholestane-3β,4β,6β,8,15α,24ξ-hexaol 24-O-[O÷(2-O-methyl-β-D-xylopyranosyl)-(1→3)-α-L-arabinofuranoside] (II).

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Authors
  1. É. B. Levina
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  2. A. I. Kalinovskii
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  3. P. V. Andriyashchenko
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  4. A. A. Kich
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Additional information

Pacific Ocean Institute of Bioorganic Chemistry, Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. Translated from Khimiya Pirodnykh Soedinenii, No. 2, pp. 246–249, March–April, 1987.

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Levina, É.B., Kalinovskii, A.I., Andriyashchenko, P.V. et al. Steroid glycosides from the starfishEchinaster sepositus . Chem Nat Compd 23, 206–209 (1987). https://doi.org/10.1007/BF00598759

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  • DOI: https://doi.org/10.1007/BF00598759

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