3,6-DIDEOXY-3,6-IMINO-1,2-O-ISOPROPYLIDENE-ALPHA-D-GLUCOFURANOSE AS A DIVERGENT INTERMEDIATE FOR THE SYNTHESIS OF HYDROXYLATED PYRROLIDINES - SYNTHESIS OF 1,4-DIDEOXY-1,4-IMINO-L-GULITOL, 1,4-DIDEOXY-1,4-IMINO-D-LYXITOL, 2S,3S,4R-3,4-DIHYDROXYPROLINE AND (1S,2R,8S,8AR)-1,2,8-TRIHYDROXYOCTAHYDROINDOLIZINE [8-EPI-SWAINSONINE] - X-RAY CRYSTAL-STRUCTURE OF (1S,2R,8S,8AR)-1,2,8-TRIHYDROXY-5-OXO-OCTAHYDROINDOLIZINE - Austin, G; Baird, P; Fleet, G; Peach, J; Smith, P; Watkin, D (1987)