A PRACTICAL SYNTHESIS OF DEOXYMANNOJIRIMYCIN AND OF (2S,3R,4R,5R)-3,4,5-TRIHYDROXYPIPECOLIC ACID FROM D-GLUCOSE

Article abstract of DOI:10.1016/0040-4020(89)80060-2

Deoxymannojirimycin <1,5-dideoxy-1,5-imino-D-mannitol> may be prepared in moderate amounts in an overall yield of 35percent 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,3R,4R,5R)-3,4,5-trihydroxypipecolic acid is reported.