35823-95-1Relevant academic research and scientific papers
GLYCOSYLATION OF BETULIN AND ITS ACETATES IN THE PRESENCE OF CADMIUM CARBONATE
Odinokova, L. E.,Oshitok, G. I.,Denisenko, V. A.,Anufriev, V. F.,Tolkach, A. M.,Uvarova, N. I.
, p. 168 - 173 (1984)
The glycosylation of betulin and its acetates by α-acetobromoglucose in toluene in the presence of cadmium carbonate is considered.It has been shown that the reaction is accompanied by Wagner-Meerwein rearrangements of the initial alcohols in rings A and E.This leads to the formation - in addition to acetates of betulin glycosides - of derivatives of allobetulin - A-nor-Δ3(5)-allobetulin and A-nor-Δ3(5)-betulin - as was shown by 1H and 13C NMR spectroscopy.
GLYCOSYLATION OF TRITERPENE ALCOHOLS OF THE LUPANE SERIES
Odinokova, L. E.,Denisenko, M. V.,Denisenko, V. A.,Uvarova, N. I.
, p. 178 - 183 (2007/10/02)
The glycosylation of lupeol, allobetulin, 3β-28-dihydroxy-18-lupene, 3β-28-dihydroxy-18β,19β-epoxylupane and of betulin monoacetates in acetonitrile with mercury cyanide has ben studied.The 3- and 28-mono- and the 3,28-di-O-β-D-glucopyranosides of 3β-28-dihydroxy-18-lupene and of 3β-28-dihydroxy-18β,19β-epoxylupane have been synthesized for the first time.Preparative methods for the synthesis of glucosides of lupeol, of allobetulin, and of betulin 3- and 28-monoacetates are proposed.
