A nitro sugar mediated synthesis of 6-amino-1,5,6-trideoxy-1,5-imino-d-glucitol (6-amino-1,6-dideoxynojirimycin)
作者:M. Begoña Pampín、Fernando Fernández、Juan C. Estévez、Ramón J. Estévez
DOI:10.1016/j.tetasy.2009.02.033
日期:2009.3
6-Benzoylamino-3-0-benzyl-1,5,6-trideoxy-N-(1,1-diphenylmethyl)-1,5-imino-D-glucitol 12a and its epimer 6-benzoylamino-3-O-benzyl-1,5,6-trideoxy-N-(1,1-diphenylmethyl)-1,5-imino-L-iditol 12b, the protected forms of 6-amino-1,6-dideoxynojirimycin 4 and its C-5 epimer 5, respectively, were easily prepared from diacetone-D-glucose via 6-O-benzoyl-3-O-benzyl-1,2-O-isopropylidene-5-C-nitromethyl-alpha-D-glucofuranose 7a or 6-O-benzoyl-3-O-benzyl-1,2-O-isopropylidene-5-C-nitromethyl-beta-L-idofuranose 7b. 6-Amino-1,6-dideoxynojirimycin 4 (an important precursor of a wide range of glycosidase inhibitors) was easily prepared from 1,5-imino-D-glucitol 12a. (c) 2009 Elsevier Ltd. All rights reserved.