Methyl (E)-2,3-di-O-benzyl-6,7,8-trideoxy-α-D-galacto-oct-6-enopyranoside, a potential precursor to lincosamine, has been prepared from both methyl α-D-galactopyranoside and methyl α-D-glucopyranoside, with the required inversion at C4 in the latter sequence being effected by a conventional oxidation-reduction. As well, (E)-6,7-dideoxy-1,2: 3,4-di-O-isopropylidene-α-D-galacto-oct-6-enose and (E)- and (Z)-6,7,8- trideoxy-1,2:3,4-di-O-isopropylidene-α-D-galacto-oct-6-enose have been prepared from 1,2: 3,4-di-O-isopropylidene-α-D-galactose.
甲基(E)-2,3-二-O-苄基-6,7,8-三脱氧-α-D-半乳糖-辛-6-烯吡喃糖苷是一种潜在的林可胺前体,已从甲基α-D-吡喃半乳糖苷和甲基α-D-吡喃葡萄糖苷中制备出来,后者序列中 C4 所需的反转是通过传统的氧化还原法实现的。此外,(E)-6,7-二脱氧-1,2:3,4-二-O-异亚丙基-α-D-半乳糖-辛-6-烯糖和(E)-和(Z)-6,7,8-三脱氧-1,2:3,4-二-O-异亚丙基-α-D-半乳糖-辛-6-烯糖也是由 1,2:3,4-二-O-异亚丙基-α-D-半乳糖制备的。