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A convenient synthesis of 4-thio-D-galactofuranose

✍ Scribed by Varela, Oscar; Cicero, Daniel; De Lederkremer, Rosa M.


Book ID
120348509
Publisher
American Chemical Society
Year
1989
Tongue
English
Weight
990 KB
Volume
54
Category
Article
ISSN
0022-3263

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πŸ“œ SIMILAR VOLUMES


Synthesis of 5-O-methyl-d-galactofuranos
✍ Marcos L. Sznaidman; Alicia FernΓ‘ndez Cirelli; Rosa M. de Lederkremer πŸ“‚ Article πŸ“… 1986 πŸ› Elsevier Science 🌐 English βš– 555 KB

ABSTRACr 5-0-Methyl-D-galactofuranose (7) was synthesized, for the first time, in five steps from D-galactono-1,4-lactone (1) in good overall yield. Tritylation and further acetylation of 1 gave 2,3,5-tri-O-acetyl-6-O-trityl-D-galactono-l,Clactone (2); prolonged acetylation caused elimination to for

Convenient syntheses of 5-O- and 3,5-di-
✍ Rosa M. de Lederkremer; Carla Marino; Oscar Varela πŸ“‚ Article πŸ“… 1990 πŸ› Elsevier Science 🌐 English βš– 617 KB

Benzoylation of o-galactono-1,4-lactone with 2.2 mol of benzoyl chloride, at -23", gave the 2,6-dibenzoate (2,62%). Tin(IV) chloride-catalyzed glycosylation of 2 with 1,2,3,5,6-penta-0-benzoyl-a#o-galactofuranose (1) afforded 2,6-di-O-benzoyl-5-0-(2,3,5,6-tetra-O-~nzoyl-~-o-galactofuranosyl)-~galact