Abstract The block synthesis starting with 3,6-di- O -acetyl-2-deoxy-2-phthalimido-4- O -(2,3,4,6-tetra- O -acetyl-β- d -galactopyranosyl)-β- d -glucopyranosyl bromide ( 2 ) to form β-glycosidic linkages has proved to be very effective for the preparation of more complex oligosaccharides. The coupling of 2 with O -(3,4,6-tri- O -benzyl-α- d -mannopyranosyl)-(1→6)- O -(3- O -allyl-2,4-di- O -benzyl-β-
摘要从3,6-二-O-乙酰基-2-脱氧-2-邻苯二甲
酰亚胺-4-O-(2,3,4,6-四-O-乙酰基-β-d-
吡喃半
乳糖基)-开始的嵌段合成已证明形成β-糖苷键的β-d-
吡喃
葡萄糖基
溴化物(2)对于制备更复杂的
寡糖非常有效。2与O-(3,4,6-三-O-苄基-α-d-甘露
吡喃糖基)-(1→6)-O-(3-O-烯丙基-2,4-二-O-的偶
联苄基-β-d-甘露
吡喃糖基)-(1→4)-1,6-脱
水-2-
叠氮基-3-O-苄基-2-脱氧-β-d-
吡喃
葡萄糖和O-(3,4,6-三-O-苄基-α-d-甘露
吡喃糖基)-(1→3)-O-(6-O-乙酰基-2,4-二-O-苄基-β-d-甘露
吡喃糖基)-(1→4) -1,6-脱
水-2-
叠氮基-3-O-苄基-2-脱氧-β-d-
吡喃
葡萄糖,以及与O-(3,4,6-三-O-苄基-α-d-甘露
吡喃糖基)-(1→3)-O-[(3,4,6-三-O-苄基-α-d-甘露
吡喃糖基)-(1→6)]-O-(2