2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,4,6-tri-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranoside | 128200-62-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,4,6-tri-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranoside
• 英文别名: 2-(trimethylsilyl)ethyl-2,3,6-tri-O-benzyl-4-O-(2,4,6-tri-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranoside；Bn(-2)[Bn(-4)][Bn(-6)]Gal(a1-4)[Bn(-2)][Bn(-3)][Bn(-6)]Gal(b)-O-EtTMS；(2R,3R,4S,5R,6R)-2-[(2R,3S,4S,5R,6R)-4,5-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-6-(2-trimethylsilylethoxy)oxan-3-yl]oxy-3,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-4-ol
• CAS: 128200-62-4
• 化学式: C₅₉H₇₀O₁₁Si
• 分子量: 983.284
• InChiKey: JDOGHRUAWRSVKJ-RVDBEPSGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.31
• 重原子数：
  71
• 可旋转键数：
  26
• 环数：
  8.0
• sp3杂化的碳原子比例：
  0.39
• 拓扑面积：
  113
• 氢给体数：
  1
• 氢受体数：
  11

反应信息

• 作为反应物：
  描述：

  2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,4,6-tri-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranoside 在 palladium on activated charcoal 4 A molecular sieve 、 氢气 、 silver trifluoromethanesulfonate 、 1,1,3,3-四甲基脲 作用下， 以 二氯甲烷 、 溶剂黄146 为溶剂， 反应 31.0h， 生成
  参考文献：
  名称：

  Synthesis of the 2''-Hydroxy, 4''-Deoxy and 4''-Epi Analogues of beta-D-GalNAc-(1->3)-alpha-D-Gal-(1->4)-beta-D-Gal, the Terminal Trisaccharide of Globotetraose.

  摘要：

  Radical deoxygenation of methyl 3,6-di-O-benzoyl-2-deoxy-4-0-imidazol-1-yl-thiocarbonyloxy-2-phthalimido-beta-D-glucopyranoside 5 gave methyl 3,6-di-O-benzoyl-2,4-dideoxy-2-phthalimido-beta-D-glucopyranoside 6, which was converted into the corresponding methyl thioglycoside donor 9. Methylsulfenyl trifluoromethane-sulfonate-promoted glycosylation of 2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,4,6-tri-O-benzyl-alpha-D-galactopyranosyl)-beta-D-galactopyranoside 10, followed by removal of protecting groups gave the 4''-deoxy analogue 12 of the terminal trisaccharide of globotetraose. Silver trifluoromethanesulfonate-promoted glycosylation of the same disaccharide alcohol 10 with 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-alpha/beta-D-glucopyranosyl bromide 13 and 2.3,4,6-tetra-0-acetyl-alpha-D-galactopyranosyl bromide 16, followed by deblocking, gave the 2''-hydroxy and 4''-epi analogues 15 and 18. respectively.

  DOI：

  10.3891/acta.chem.scand.48-0356
• 作为产物：
  描述：

  2-(trimethylsilyl)ethyl 4-O-(3-O-allyl-2,4,6-tri-O-benzyl-α-D-galactopyranosyl)-2,3,6-tri-O-benzyl-α,β-D-galactopyranoside 在 palladium dichloride 作用下， 以 甲醇 为溶剂， 反应 2.0h， 以75%的产率得到2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,4,6-tri-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranoside
  参考文献：
  名称：

  球四糖四糖和末端三糖和二糖片段的合成。

  摘要：

  球四糖[β-D-GalNAc-（1-> 3）-alpha-D-Gal-（1-> 4）-beta-D-Gal-的2-（三甲基甲硅烷基）乙基（TMSEt）β-糖苷（1-> 4）-D-Glc]和末端三糖，以及末端二糖的甲基α-糖苷1，是由三氟甲磺酸银促进适当保护的半乳糖苷，galabioside和globotrioside的β-糖基化合成的醇与3,4,6-三-O-乙酰基-2-脱氧-2-邻苯二甲酰亚胺基-β-D-吡喃半乳糖苷氯，然后除去保护基。用三氟乙酸-二氯甲烷除去三糖四糖苷和末端三糖的异头TMSEt基团，得到相应的半缩醛糖8和3。末端三糖的TMSEt糖苷通过1-乙酸盐转化，

  DOI：

  10.1016/0008-6215(94)90010-8

文献信息

• Synthesis of the globotetraose tetrasaccharide and terminal tri- and di-saccharide fragments
  作者：Ulf Nilsson、Asim K. Ray、Göran Magnusson

  DOI：10.1016/0008-6215(94)90010-8

  日期：1994.1

  groups. Removal of the anomeric TMSEt group of the globotetraoside and of the terminal trisaccharide, using trifluoroacetic acid-dichloromethane, gave the corresponding hemiacetal sugars 8 and 3. The TMSEt glycoside of the terminal trisaccharide was converted, via the 1-acetate, into the corresponding isobutyl (4) and 3-butylsulfonyl-2-[(butylsulfonyl)methyl]propyl (5) glycosides and into the TMSEt thioglycoside

  球四糖[β-D-GalNAc-（1-> 3）-alpha-D-Gal-（1-> 4）-beta-D-Gal-的2-（三甲基甲硅烷基）乙基（TMSEt）β-糖苷（1-> 4）-D-Glc]和末端三糖，以及末端二糖的甲基α-糖苷1，是由三氟甲磺酸银促进适当保护的半乳糖苷，galabioside和globotrioside的β-糖基化合成的醇与3,4,6-三-O-乙酰基-2-脱氧-2-邻苯二甲酰亚胺基-β-D-吡喃半乳糖苷氯，然后除去保护基。用三氟乙酸-二氯甲烷除去三糖四糖苷和末端三糖的异头TMSEt基团，得到相应的半缩醛糖8和3。末端三糖的TMSEt糖苷通过1-乙酸盐转化，
• Synthesis of the 2''-Hydroxy, 4''-Deoxy and 4''-Epi Analogues of beta-D-GalNAc-(1->3)-alpha-D-Gal-(1->4)-beta-D-Gal, the Terminal Trisaccharide of Globotetraose.
  作者：Ulf Nilsson、Anikó Wendler、Göran Magnusson、Man Shun Soon Huang、Thorleif Anthonsen、Hari N. Pati、Kirpal S. Bisht、Virinder S. Parmar、George W. Francis

  DOI：10.3891/acta.chem.scand.48-0356

  日期：——

  Radical deoxygenation of methyl 3,6-di-O-benzoyl-2-deoxy-4-0-imidazol-1-yl-thiocarbonyloxy-2-phthalimido-beta-D-glucopyranoside 5 gave methyl 3,6-di-O-benzoyl-2,4-dideoxy-2-phthalimido-beta-D-glucopyranoside 6, which was converted into the corresponding methyl thioglycoside donor 9. Methylsulfenyl trifluoromethane-sulfonate-promoted glycosylation of 2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,4,6-tri-O-benzyl-alpha-D-galactopyranosyl)-beta-D-galactopyranoside 10, followed by removal of protecting groups gave the 4''-deoxy analogue 12 of the terminal trisaccharide of globotetraose. Silver trifluoromethanesulfonate-promoted glycosylation of the same disaccharide alcohol 10 with 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-alpha/beta-D-glucopyranosyl bromide 13 and 2.3,4,6-tetra-0-acetyl-alpha-D-galactopyranosyl bromide 16, followed by deblocking, gave the 2''-hydroxy and 4''-epi analogues 15 and 18. respectively.