Condensation of benzyl 2-acetamido-4,6-O-benzylidene-2-deoxy-a-D-galactopyranoside with 2,3,4-tri-o-acetyl-a-D-fucopyranosyl bromide in 1: 1 nitromethane-benzene, in the presence of powdered mercuric cyanide, afforded benzyl 2-acetamido-4,6-O-benzylidene-2-deoxy-3-0-(2,3,4-tri-O-acetyl-P-D-fucopyran
249. 2,3,4,6-Tetra-O-benzyl-D-galactosyl chloride and its use in the synthesis of αand β-D-galactopyranosides
✍ Scribed by Austin, P. W. ;Hardy, F. E. ;Buchanan, J. G. ;Baddiley, J.
- Book ID
- 120287939
- Publisher
- The Royal Society of Chemistry
- Year
- 1965
- Weight
- 677 KB
- Volume
- 0
- Category
- Article
- ISSN
- 0368-1769
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📜 SIMILAR VOLUMES
## Note The Koenig+Knorr reaction of benzyl 4,6-O-benzylidene-fl-o-galactopyranoside with 2,3,4,6-tetra-O-acetyl-a-D-galactopyranosyl bromide In continuation of our studiesle5 on the relative reactivity ot' HO-2 and -3 in 4,6-O-benzylidene-D-glucopyranosides towards u-glucosylation 111 reactions o
Methyl 3-O-(3,6-anhydro-beta-D-galactopyranosyl)-alpha-D-galactopyranoside (3) and methyl 3,6-anhydro-4-O-beta-D-galactopyranosyl-alpha-D-galactopyranoside (4) have been synthesised stereoselectively using three coupling procedures. Acceptable yields were achieved using acetylated derivatives as don