Carbohydrate Research p. 101 - 110 (1988)
Update date:2022-08-03
Topics: Purification Pharmacokinetics Bioassays Extraction Glycosides Structural Modification SEMISYNTHETIC ANALOGUES GINSENOSIDES
Atopkina, Lyubov N.
Denisenko, Vladimir A.
Uvarova, Nina I.
Elyakov, Georgi B.
Glycosylation of the dammar-24-ene-3,12β,20(S)-triols with 2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide (A) in the presence of silver oxide in dichloromethane gives a mixture of the acetylated 3-, 12-, 20-, 3,12-di-, and 3,20-di-O-β-D-glucopyranosyl derivatives in a total yield of 83-84.5percent.Under similar conditions, the 3-O-acetyl derivatives of dammar-24-ene-3,12β,20(S)-triols give a mixture of 12- and 20-O-β-D-glucopyranosyl derivatives.Condensation of betulafolienetriol
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