allyl 2,3-di-O-benzoyl-β-D-galactopyranoside | 153448-98-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: allyl 2,3-di-O-benzoyl-β-D-galactopyranoside
• CAS: 153448-98-7
• 化学式: C₂₃H₂₄O₈
• 分子量: 428.439
• InChiKey: JJEAETSANJSYMT-WNPAHNIUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.72
• 重原子数：
  31.0
• 可旋转键数：
  8.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  111.52
• 氢给体数：
  2.0
• 氢受体数：
  8.0

反应信息

• 作为反应物：
  描述：

  allyl 2,3-di-O-benzoyl-β-D-galactopyranoside 在 二乙胺基三氟化硫 、 sodium methylate 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 55.0h， 生成
  参考文献：
  名称：

  Enzymic transfer of 6-modified d-galactosyl residues: synthesis of biantennary penta- and hepta-saccharides having two 6-deoxy-d-galactose residues at the nonreducing end and evaluation of 6-deoxy-d-galactosyl transfer to glycoprotein using bovine β-(1 → 4)-galactosyltransferase and UDP-6-deoxy-d-galactose

  摘要：

  UDP-6-Deoxy-D-galactose and UDP-6-deoxy-6-fluoro-D-galactose were synthesized and their transfer to 2-acetamido-2-deoxy-D-glucose (N-acetyl-D-glucosamine) by beta-(1 --> 4)galactosyltransferase was examined. The transfer rates of 6-deoxy-D-galactose and 6-deoxy-6-fluoro-D-galactose were 1.3 and 0.2% of that of D-galactosyl transfer, respectively. The 2-acetamido-4-O-(6-deoxy-beta-D-galactopyranosyl)-2-deoxy-D-glucopyranose (6'-deoxy-N-acetyllactosamine) and methyl 2-acetamido-4-O-(6-deoxy-6-fluoro-beta-D-galactopyranosyl)-2-deoxy-D-glucopyranoside (6'-deoxy-6'-fluoro-N-acetyllactosamine) were synthesized enzymatically in 30 and 59% yields, respectively. Further, 6-deoxy-D-galactose could be completely transferred to N-linked type biantennary oligosaccharides having two N-acetyl-D-glucosaminyl residues at the nonreducing end to give the corresponding penta- and hepta-saccharides in 55 and 57% yields, respectively. An assay of 6-deoxy-D-galactosyl transfer using asialo agalacto alpha(1)-acid glycoprotein as an acceptor suggested that 6-deoxy-D-galactose was transferred to about 30% of the N-acetyl-D-glucosaminyl residues in the N-linked oligosaccharides of the glycoprotein.

  DOI：

  10.1016/0008-6215(94)00369-q
• 作为产物：
  描述：

  Allyl-2,3-di-O-benzoyl-4,6-O-benzyliden-β-D-galactopyranosid 在 溶剂黄146 作用下， 反应 1.5h， 生成 allyl 2,3-di-O-benzoyl-β-D-galactopyranoside
  参考文献：
  名称：

  Enzymic transfer of 6-modified d-galactosyl residues: synthesis of biantennary penta- and hepta-saccharides having two 6-deoxy-d-galactose residues at the nonreducing end and evaluation of 6-deoxy-d-galactosyl transfer to glycoprotein using bovine β-(1 → 4)-galactosyltransferase and UDP-6-deoxy-d-galactose

  摘要：

  UDP-6-Deoxy-D-galactose and UDP-6-deoxy-6-fluoro-D-galactose were synthesized and their transfer to 2-acetamido-2-deoxy-D-glucose (N-acetyl-D-glucosamine) by beta-(1 --> 4)galactosyltransferase was examined. The transfer rates of 6-deoxy-D-galactose and 6-deoxy-6-fluoro-D-galactose were 1.3 and 0.2% of that of D-galactosyl transfer, respectively. The 2-acetamido-4-O-(6-deoxy-beta-D-galactopyranosyl)-2-deoxy-D-glucopyranose (6'-deoxy-N-acetyllactosamine) and methyl 2-acetamido-4-O-(6-deoxy-6-fluoro-beta-D-galactopyranosyl)-2-deoxy-D-glucopyranoside (6'-deoxy-6'-fluoro-N-acetyllactosamine) were synthesized enzymatically in 30 and 59% yields, respectively. Further, 6-deoxy-D-galactose could be completely transferred to N-linked type biantennary oligosaccharides having two N-acetyl-D-glucosaminyl residues at the nonreducing end to give the corresponding penta- and hepta-saccharides in 55 and 57% yields, respectively. An assay of 6-deoxy-D-galactosyl transfer using asialo agalacto alpha(1)-acid glycoprotein as an acceptor suggested that 6-deoxy-D-galactose was transferred to about 30% of the N-acetyl-D-glucosaminyl residues in the N-linked oligosaccharides of the glycoprotein.

  DOI：

  10.1016/0008-6215(94)00369-q

文献信息

• Boronic Acids as Phase-Transfer Reagents for Fischer Glycosidations in Low-Polarity Solvents
  作者：Sanjay Manhas、Mark S. Taylor

  DOI：10.1021/acs.joc.7b01880

  日期：2017.11.3

  Protocols employing phenylboronic acid as a phase-transfer reagent for Fischer glycosidations in low-polarity organic solvents are described. In addition to providing rate acceleration, the formation of a substrate-derived boronic ester alters the course of the reaction by selective promotion of a furanoside- or pyranoside-selective pathway. Computational modeling of the relative energies of the glycoside-derived

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• VaporSPOT: Parallel Synthesis of Oligosaccharides on Membranes
  作者：Alexandra Tsouka、Pietro Dallabernardina、Marco Mende、Eric T. Sletten、Sabrina Leichnitz、Klaus Bienert、Kim Le Mai Hoang、Peter H. Seeberger、Felix F. Loeffler

  DOI：10.1021/jacs.2c07285

  日期：2022.11.2

  Automated chemical synthesis has revolutionized synthetic access to biopolymers in terms of simplicity and speed. While automated oligosaccharide synthesis has become faster and more versatile, the parallel synthesis of oligosaccharides is not yet possible. Here, a chemical vapor glycosylation strategy (VaporSPOT) is described that enables the simultaneous synthesis of oligosaccharides on a cellulose membrane

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