The cyclic sulfite 6 prepared from enantiomerically pure N-[(2S)-2,3-d
ihydroxypropan-1-yl]phthalimide 2 derived from D-mannitol upon treatme
nt with KCN in DMF afforded N-[(2S)-3-cyano-2-hydroxy propan-1-yl]phth
alimide which was hydrolysed to furnish good yield of GABOB. Copyright
(C) 1996 Elsevier Science Ltd