Recovery of difluoro sugar

Details Recovery of difluoro sugar Recovery of difluoro sugar

1989-11-13

1990-09-04

Griffin, Ronald W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536122, 536 184, 536124, 536 23, 536 24, 549295, 549324, 549325, C07H 100, C07H 500, C07D30700

Patent

active

049546236

ABSTRACT:
A process for recycling the difluoro sugar in the synthesis of 2,2-difluoronucleosides proceeds by removing the base moiety of .alpha.-difluoronucleosides by reduction and hydrolysis, followed by oxidation to put the difluro sugar in a form conventiently recycled into the synthesis, and intermediates useful therefor.

REFERENCES:
patent: 3227736 (1966-01-01), Tschesche et al.
patent: 3320285 (1967-05-01), Martel et al.
patent: 4526988 (1985-07-01), Hertel
patent: 4692434 (1987-09-01), Hertel
patent: 4808614 (1989-02-01), Hertel
Ennifar et al., J.C.S. Chem. Comm., 41-42 (1977).
Codington et al., Carbohydrate Res. I, 455-466 (1966).
Yamaguchi et al., Chem. Pharm. Bull. 32, 1441-1450 (1984).
Osamu Kitagawa, et al., Tetrahedron Letters, 29(15), 1803-1806, (1988).
An and Bobek, Tetrahedron Letters, 17(28), 3219-3222, (1986).

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