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Glycosylation of cardenolides. IV. Strophanthidin 5-α-L-rhamnoside and 3,5-bisglycosides

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Summary

1. The Koenigs-Knorr condensation of acetobromorhamnose with strophanthidin acetate has given strophanthidin L-rhamnoside substituted at the C5 hydroxyl, and its condensation with free strophanthidin has given strophanthidin di-α-O-rhamnoside substituted at the C3 and C5 hydroxy groups.

2. Under similar conditions, methyl 2,3,4-tri-O-acetyl-l-bromo-1-deoxy-α-D-galacturonate and strophanthidin have given the corresponding strophanthidin diglycoside substituted at the C3 and C5 hydroxyls.

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Authors
  1. N. Sh. Pal'yants
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  2. M. V. Gorovits
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  3. N. K. Abubakirov
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Additional information

Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 765–772, November–December, 1976.

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Pal'yants, N.S., Gorovits, M.V. & Abubakirov, N.K. Glycosylation of cardenolides. IV. Strophanthidin 5-α-L-rhamnoside and 3,5-bisglycosides. Chem Nat Compd 12, 687–692 (1976). https://doi.org/10.1007/BF00564960

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  • DOI: https://doi.org/10.1007/BF00564960

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