中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl 6-O-benzoyl-2,3,4-tri-O-benzyl-α-D-glucopyranosyl-(1->6)-2,3,4-tri-O-benzoyl-β-D-glucopyranosyl-(1->3)-2-azido-2-deoxy-4,6-O-benzylidene-α-D-galactopyranoside | 1073182-55-4 | C75H71N3O19 | 1318.4 |
—— | Benzoic acid (2R,3R,4S,5R,6R)-6-((2R,3R,4R,5R,6S)-5-azido-2-benzyloxymethyl-4-hydroxy-6-methoxy-tetrahydro-pyran-3-yloxy)-3,4,5-tris-benzyloxy-tetrahydro-pyran-2-ylmethyl ester | 893443-61-3 | C48H51N3O11 | 845.946 |
—— | methyl 2,3,4-tri-O-benzoyl-6-O-chloracetyl-β-D-glucopyranosyl-(1->3)-2-azido-4,6-O-benzylidene-2-deoxy-α-D-galactopyranoside | 1073182-16-7 | C43H40ClN3O14 | 858.255 |
—— | (S)-2-Amino-N-[(2S,3R,4R,5R,6R)-6-hydroxymethyl-2-methoxy-4,5-bis-((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-3-yl]-propionamide | 893443-77-1 | C22H40N2O16 | 588.563 |
Penta-O-pivaloyl-galactopyranose and tetra-O-pivaloyl-galactopyranosyl bromide after electrophilic activation reacted with 6-O-protected 2-azido-galactosides to give the precursor structures of the Thomsen-Friedenreich antigen disaccharide with high regioselectivity, but low yield.With 4,6-Obenzylidene protected 2-azidogalactosides and 2-O-pivaloyl phenylthio galactosides, T-antigen disaccharides of this type were obtained in good yields. Glycosylation reactions of 4,6-O-benzylidene protected glucosamine derivatives with O-pivaloyl protected galactosyl bromide efficiently gave lactolactosamine disaccharides. Even a thioglycoside was efficiently galactosylated by this method resulting in the formation of a disaccharide thioglycoside useful itself as a potential glycosyl donor.