Tetrahedron Letters p. 4421 - 4424 (1990)
Update date:2022-08-05
Topics:
Urban, Frank J.
Moore, Bernard S.
Breitenbach, Ralph
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 disaccharide α-trichloroacetimidates.Zinc bromide was superior to BF3*Et2O for coupling these disaccharide α-trichloroacetimidates with the steroid tigogenin.
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