6-tri-O-benzyl-beta-D-glucopyranosyl)-3,6-di-O-benzyl-2-deoxy-beta-D-glucopyranoside. Removal of the 2-O-acetyl group, followed by oxidation with acetic anhydridedimethyl sulfoxide, gave a beta-D-arabino-hexosid-2-ulose (25). After reduction with sodium borohydride, removal of the benzyl groups gave crystalline 2-acetamido-2-deoxy-4-O-beta-D-mannopyranosyl-D-glucose (27). The anomeric configuration of the glycosidic
4,6-二-O-乙酰基-2,3-O-羰基-α-D-甘露
吡喃糖基
溴化物与2-
氨基-2-N,3-O-羰基-5.6-O-异亚丙基-
D-葡萄糖的缩合
乙缩醛出乎意料地得到了2-
氨基-2-N,3-O-羰基-2-脱氧-4-O-(4,6-二-O-乙酰基-2,3-O-羰基-α-D (-甘露
吡喃糖基)-5,6-O-异亚丙基-
D-葡萄糖二
乙缩醛,通过去酯化然后乙酰化进一步转化成先前已知的2-
氨基-2-N,3-O-羰基-2-脱氧-5,6-O-异亚丙基-4-O-α-D-甘露
吡喃糖基-
D-葡萄糖二
乙缩醛及其四-O-乙酰基衍
生物。苄基2-乙酰
氨基-3,6-二-O-苄基-2-脱氧-β-
D-吡喃葡萄糖苷与2-O-乙酰基-3,4,6-三-O-苄基-β-
D-吡喃葡萄糖基缩合
溴得到苄基2-乙酰
氨基-4-O-(2-O-乙酰基-3,4,6-三-O-苄基-β-
D-吡喃葡萄糖基)-3,6-二-O-苄基-2-脱氧β-
D-吡喃葡萄糖苷。除去