中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1,6-dideoxy-1,6-epithio-β-D-glucopyranose | 4984-68-3 | C6H10O4S | 178.209 |
Phenyl tetra-O-benzoyl-1-telluro-β-D-glucopyranoside, when treated with 1,2:3,4-di-O-isopropylidene-α-D-galactose in the presence of N-iodosuccinimide and trifluoromethanesulfonic acid, immediately forms the expected β-disaccharide derivative. A subsequent experiment involving both a telluroglycoside and a selenoglycoside as donors with the one alcohol acceptor showed complete preference for the telluroglycoside. This result has led to an extension of the investigation to establish a ‘reactivity scale’ for various telluro, seleno and thio sugars.
Derivatives of 1,6-dideoxy-1,6-epithio- and 1,6-dideoxy-1,6-episeleno-β-D-glucopyranose have been shown to be effective glycosyl donors toward carbohydrate alcohols under the agency of N- iodosuccinimide/trifluoromethanesulfonic acid. Reduction of the intermediate disulfides and diselenides affords 6-deoxy-β-D-glucopyranosides. The synthesis of a range of such 6′-deoxy disaccharide derivatives is reported.
Starting 1,2,3,4-tetra-