Amp. Koskinen et La. Otsomaa, A NEW ACCESS TO ENANTIOMERICALLY PURE DEOXY AMINOHEXOSES - METHYL 4-AMINO-4,6-DIDEOXYGULOPYRANOSIDE AND EPI-TOLYPOSAMINE, Tetrahedron, 53(18), 1997, pp. 6473-6484
New efficient synthetic routes have been developed starting from the f
ully protected L-threonine derivative 1 for some deoxy-4-aminohexoses:
methyl 4-amino-4,6-dideoxy gulopyranoside 2 and epi-tolyposamine 3. T
he title compounds were synthesized using an improved Horner-Emmons re
action of the threonine derived aldehyde 7. A new method for selective
removal of the aminal protection is also reported. (C) 1997 Elsevier
Science Ltd.