PREPARATION OF METHYL 4,6-O-BENZYLIDENE-2-CHLORO- AND -2-BROMO-α- AND β-D-xylo-HEXOPYRANOSID-3-ULOSES AND THEIR α-D-ribo ISOMERS, AND FORMATION OF GLYCOSID-3-ULOSE HYDRATES FOR THE β-D-xylo ISOMERS

Article abstract of DOI:10.1016/0008-6215(89)85067-0

The title glycosid-3-uloses were prepared from 3-nitro-β-D-threo-hex-2-eno-pyranoside derivatives. 1H-N.m.r. spectral studies revealed that the 2-bromo- and 2-chloro-β-D-xylo-hexopyranosid-3-uloses readily equilibrated with their hydrates, but the remaini