1,3,6-tri-O-acetyl-2-deoxy-2-phthalimido-4-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-α-D-glucopyranose | 76542-62-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 1,3,6-tri-O-acetyl-2-deoxy-2-phthalimido-4-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-α-D-glucopyranose
• 英文别名: [(2R,3S,4R,5R,6R)-4,6-diacetyloxy-5-(1,3-dioxoisoindol-2-yl)-3-[(2S,3R,4S,5S,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxyoxan-2-yl]methyl acetate
• CAS: 76542-62-6
• 化学式: C₃₄H₃₉NO₁₉
• 分子量: 765.679
• InChiKey: AOLPEHDFTRGREH-GTHYQXBSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.1
• 重原子数：
  54
• 可旋转键数：
  19
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  249
• 氢给体数：
  0
• 氢受体数：
  19

反应信息

• 作为反应物：
  描述：

  1,3,6-tri-O-acetyl-2-deoxy-2-phthalimido-4-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-α-D-glucopyranose 在 盐酸 、 对甲苯磺酸 calcium sulfate 、 sodium methylate 、 mercury dichloride 、 mercury(II) oxide 作用下， 以 1,4-二氧六环 、 吡啶 、 甲醇 、 二氯甲烷 、 乙酸酐 、 溶剂黄146 为溶剂， 反应 71.5h， 生成 methyl 3,6-di-O-acetyl-2-deoxy-4-O-(2,6-di-O-acetyl-3,4-O-isopropylidene-β-D-galactopyranosyl)-2-phthalimido-β-D-glucopyranoside
  参考文献：
  名称：

  Syntheses of linear tetra-, hexa-, and octa-saccharide fragments of the i-blood group active poly-(N-acetyl-lactosamine) series. Blockwise methods for the synthesis of repetitive oligosaccharide sequences

  摘要：

  N-Phthaloylation of lactosamine gave various glycosyl donors (beta-chloride, beta-trichloroacetimidate) and glycosyl acceptors (3',4'-diol). Coupling of the chloride with a methyl beta-D-glycoside led to the tetrasaccharide fragment, beta-D-Galp-(1----4)-beta-D-GlcpNac-(1----3)-beta-D-Galp-(1----4)- beta-D-GlcpNAcOMe. Acetolysis of the protected tetrasaccharide, followed by treatment with hydrogen chloride, gave a tetrasaccharide chloride which was coupled with the methyl beta-glycoside of lactosamine. A hexasaccharide fragment, [beta-D-Galp-(1----4)-beta-D-GlcpNAc-(1----3)]2-beta-D-Galp-(1----4)-bet a- D-GlcpNAcOMe, was thus obtained by this ("n + 1") method. A more efficient ("n + n") method was applied for the synthesis of an octasaccharide fragment, [beta-D-Galp-(1----4)-beta-D-GlcpNAc-(1----3)]3-beta-D-Galp- (1----4)-beta-D-GlcpNAcOMe (38), where di- and tetra-saccharide intermediates having a 3,4-O-isopropylidene-beta-D-galactopyranosyl nonreducing terminal group and a benzyl beta-D-glycoside group were precursors, either as glycosyl donors (beta-trichloroacetimidates) or glycosyl acceptors (3,4-diols as nonreducing terminal groups). Thus, doubling the length of the repetitive oligosaccharide sequence could be efficiently accomplished at each glycosylation step.

  DOI：

  10.1016/0008-6215(90)80002-k
• 作为产物：
  描述：

  Acetic acid (2R,3S,4R)-2-acetoxymethyl-5-azido-6-nitrooxy-3-((2S,3R,4S,5S,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-4-yl ester 在 palladium on activated charcoal 吡啶 、 氢气 、 sodium carbonate 作用下， 以 乙醇 、 乙酸乙酯 为溶剂， 25.0 ℃ 、399.99 kPa 条件下， 反应 3.0h， 生成 1,3,6-tri-O-acetyl-2-deoxy-2-phthalimido-4-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-α-D-glucopyranose
  参考文献：
  名称：

  包含末端N-乙酰基-β-D-乳糖胺基残基的三糖，五糖和七糖的合成，糖基糖是糖蛋白的``复合型''碳水化合物部分的一部分

  摘要：

  三氟甲磺酸银促进的3,6-二-O-（2,3,4,6-四-O-乙酰基-β - D-吡喃半乳糖基）-2-脱氧-2-邻苯二甲酰亚胺-β - D-吡喃葡萄糖基溴的缩合反应用苄基3- ö -苄基-4,6- ö苄基偏二-α- d -mannopyranoside，苄基3,6-二- ö苄基α- d -mannopyranoside，和苄基3,6-二- ö -（3,4,6-三-O-苄基-α - D-甘露吡喃糖基）-2,4-二-O-苄基-α - Dβ-甘露糖吡喃糖苷分别以66％，72％和56％的收率得到了受保护的三糖，五糖和七糖衍生物。将2-脱氧-2-邻苯二甲酰亚胺基团交换成2-乙酰氨基-2-脱氧基团并解封后，获得了游离的寡糖。

  DOI：

  10.1039/p19810002070

文献信息

• Synthesis of hepta- and penta-saccharides, part of the complex-type carbohydrate portion of glycoproteins
  作者：Jan Arnarp、Jörgen Lönngren

  DOI：10.1039/c39800001000

  日期：——

  Silver trifluoromethanesulphonate-promoted condensation of 3,6-di-O-acetyl-4-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-2-deoxy-2-phthalimido-β-D-mannopyranoside and benzyl 2,4-di-O-benzyl-3,6-di-O-(3,4,6,-tri-O-benzyl-α-D-mannopyranosyl)-α-D-mannopyranoside gave a protected pentasaccharide and a protected heptasaccharide in 56% and 43% yield, respectively; after deblocking the free penta- and

  三氟甲磺酸银促进的3,6-二-O-乙酰基-4- O-（2,3,4,6-四-O-乙酰基-β - D-吡喃半乳糖基）-2-脱氧-2-邻苯二甲酰亚胺基-缩合反应β - d -mannopyranoside和苄基2,4-二- ø -苄基-3,6-二- ö - （3,4,6， -三- ö苄基α - d -mannopyranosyl） - α - d -甘露糖吡喃糖苷以56％和43％的产率得到被保护的五糖和被保护的七糖。解封后，得到游离的五糖和七糖。
• Synthesis of lactosamine-based building blocks on a practical scale and investigations of their assembly for the preparation of¹⁹F-labelled LacNAc oligomers
  作者：Cecilia Romanò、Stefan Oscarson

  DOI：10.1039/c8ob03066a

  日期：——

  showed that benzylated acceptors significantly improved the yields over acetylated ones, and that, gratifyingly, the almost untried N-trifluoroacetamide (NTFAc) protected donors, already containing the desired 19F-label, were found to be optimal, both considering reaction yields and purification of the glycosylation reactions. The NTFAc group of reducing end acceptors was introduced through N-amide

  普遍存在的二糖N-乙酰乳糖胺（LacNAc 2型，Galβ1,4GlcNAc）通常在癌细胞表面上过表达，并与肿瘤分泌的半乳糖凝集素结合，从而促成与癌症相关的过程，如转移，黏附，肿瘤存活和转移。免疫逃逸。为了促进NMR研究寡聚LacNAc结构与半乳糖凝集素之间的结合相互作用，这种相互作用可以显示外结合和内结合行为，因此需要一个具有区域选择性的19 F标记的寡聚LacNAc结构的文库。这里，各种N在实际规模上的合成据报道，从市售的乳糖胺盐酸盐开始保护-保护的（Troc，Phth，TFAc）乳糖胺供体。用乳糖胺受体对其糖基化以形成含19 F的LacNAc低聚物的研究表明，苄基化的受体比乙酰化的受体显着提高了收率，令人欣喜的是，几乎未尝试的N-三氟乙酰胺（NTFAc）保护的供体已经含有所需的19 F考虑到反应产率和糖基化反应的纯化，发现-标记物是最佳的。NTFAc的还原末端受体是通过N引入的-带有
• Block synthesis of a hexasaccharide hapten of i blood group antigen
  作者：Jocelyne Alais、Alain Veyrieres

  DOI：10.1016/s0040-4039(00)88402-6

  日期：1983.1