A practical synthesis of deoxymannojirimycin and of (2s,3R,4R,5R)-3,4,5-trihydroxypipecolic acid from D-glucose
作者:George W.J. Fleet、Nigel G. Ramsden、David R Witty
DOI:10.1016/0040-4020(89)80060-2
日期:1989.1
Deoxymannojirimycin [1,5-dideoxy-1,5-imino-D-mannitol] may be prepared in moderate amounts in an overall yield of 35% in ten steps from diacetone glucose; the key step is formation of the piperidine ring by intramolecular nucleophilic displacement of a triflate at C-2 of a methyl glucofuranoside by a nitrogen function at C-6, irrespective of the anomeric configuration of the sugar. A synthesis of (2S
脱氧甘露糖霉素[1,5-二脱氧-1,5-亚氨基-D-甘露糖醇]可以由二丙酮葡萄糖经十步以中等量制备,总收率为35%。关键步骤是无论糖的端基构型如何,都通过C-6处的氮官能团通过甲基葡糖呋喃糖苷的C-2处三氟甲磺酸酯的分子内亲核取代形成哌啶环。报道了(2S,3R,4R,5R)-3,4,5-三羟基哌酸的合成。