Methyl 5,6-dideoxy-2,3-O-isopropylidene-6-nitro-α-D-lyxo-hex-5-enofuranoside (10) was prepared from D-mannose in 7 steps. Addition of methyl methylphosphinate to 10, followed by the catalytic hydrogenation and diazotization, afforded methyl 5-deoxy-2,3-O-isopropylidene-5-[(methoxy)methylphosphinyl]-α-D-lyxo-hexofuranoside, which was then converted into 6-O-triphenylmethyl and 6-O-tetrahydropyranyl
甲基 5,6-dideoxy-2,3-O-isopropylidene-6-nitro-α-D-lyxo-hex-5-enofuranoside (10) 由
D-甘露糖分 7 个步骤制备。甲基
次膦酸甲酯加成到 10,然后催化氢化和重氮化,得到甲基 5-deoxy-2,3-O-isopropylidene-5-[(甲氧基)methylphosphinyl]-α-D-lyxo-hexofuranoside,然后将其转化转化为 6-O-三苯甲基和 6-O-
四氢吡喃基衍
生物 (14, 15)。通过用二氢双(2-甲氧基乙氧基)
铝酸钠还原,然后酸
水解,14 和 15 都提供了 D-
吡喃
甘露糖(连同小比例的 L-
吡喃
葡萄糖),其具有甲基亚膦基代替环氧。这些被转化为 1,2,3,4,6-penta-O-乙酰衍
生物,其结构和构象由光谱学确定。