The direct synthesis of 6-amino-6-deoxyaldonic acids as monomers for the preparation of polyhydroxylated nylon 6
作者:Ludovic Chaveriat、Imane Stasik、Gilles Demailly、Daniel Beaupère
DOI:10.1016/j.tetasy.2006.04.018
日期:2006.5
6-Azido-6-deoxy-D-galactitol and D-mannitol were obtained quantitatively via the reduction of the corresponding 6-azido-6deoxy-D-hexono-1,4-lactones, and 6-azido-6-deoxy-D-glucitol was obtained by the reduction of 6-azido-6-deoxyglucose in good yields. The reduction of monoazidodeoxyhexitols by catalytic hydrogenation gave the monoaminohexitol analogues in 95-98% yields. Oxidation of these afforded the corresponding 6-amino-6-deoxy-D-aldonic acids in moderate yields. Alternatively, saponification of 6-azido-6-deoxy-D-hexonolactones gave 6-azido-6-deoxyaldonic acid salts which, after reduction followed by neutralization, led to the expected compounds in 82-88% overall yields. (c) 2006 Elsevier Ltd. All rights reserved.