Abstract
In studying the synthesis of tigogenyl β-O-cellobioside 1 via the trichloroacetimidate method of Schmidt, cesium carbonate was found to be an efficient reagent for the synthesis of peracetylated disacchadde α-trichloroacetimidates. Zinc bromide was superior to BF 3·Et 2O for coupling these disaccharide α-trichloroacetimidates with the steroid tigogenin.
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