Jp. Shilvock et Gwj. Fleet, THE SYNTHESIS OF DEOXYGALACTOSTATIN AND 2,6-IMINO-HEPTITOL DERIVATIVES VIA STANNANE MEDIATED HYDROXYMETHYLATION OF 5-AZIDO-1,4-LACTONES, Synlett, (5), 1998, pp. 554
Deoxygalactostatin, homogalactonojirimycin derivatives and other 2,6-i
mino-heptitols are accessed via the nucleophilic addition of a hydroxy
methyl anion equivalent to 5-azido-1,4-lactones to afford 6-azido-lact
ols. Subsequent hydrogenation induces intramolecular reductive aminati
on to produce the desired piperidine ring systems.