allyl 4,6-di-O-benzoyl-α-D-mannopyranoside | 631919-00-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: allyl 4,6-di-O-benzoyl-α-D-mannopyranoside
• CAS: 631919-00-1
• 化学式: C₂₃H₂₄O₈
• 分子量: 428.439
• InChiKey: IUZUZGFGAYDUQX-MZSWFSNMSA-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 4,6-di-O-benzoyl-α-D-mannopyranoside 在 吡啶 、 N-碘代丁二酰亚胺 、 三氟甲磺酸三甲基硅酯 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 生成 allyl 2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl-(1->3)-2,4,6-tri-O-benzoyl-α-D-mannopyranoside
  参考文献：
  名称：

  A practical synthesis of α-d-Manp-(1→3)-α-d-Manp-(1→2)-[α-d-Glcp-(1→3)]-α-d-Manp-(1→2)-α-d-Manp-(1→2)-α-d-Manp, an O-specific heterohexasaccharide fragment of Citrobacter braakii O7a, 3b, 1c

  摘要：

  An O-specific heterohexasaccharide fragment of Citrobacter braakii O7a, 3b, 1c, alpha-D-Manp-(1-->3)-alpha-D-Manp-(1-->2)-[alpha-D-Glcp(1-->3)] alpha-D-Manp-(1-->2)-alpha-D-Manp-(1-->2)-alpha-D-Manp was synthesized as its methyl glycoside. Acetylation of allyl 4,6-O-benzylidene-alpha-D-mannopyranoside, followed by debenzylidenization and benzoylation gave allyl 2,3-di-O-acetyl-4,6-di-O-benzoyl-alpha-D-mannopyranoside (3), and subsequent deacetylation of 3 with CH3COCl-MeOH gave the monosaccharide acceptor 4. Condensation of isopropyl 2,3,4,6-tetra-O-benzyl-1-thio-beta-D-glucopyranoside (6) with 4 selectively afforded the alpha-(l-->3)-linked disaccharide 7. Condensation of 7 with the (1-->3)-linked disaccharide donor 9, followed by deallylation and trichloroacetimidation, afforded the tetrasaccharide donor 12. Coupling of 12 with disaccharide acceptor 13, followed by debenzylation and deacylation, furnished the target heterohexasaccharide 16. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(03)00381-1
• 作为产物：
  描述：

  allyl 2,3-di-O-acetyl-α-D-mannopyranoside 在 吡啶 、 乙酰氯 作用下， 以 甲醇 为溶剂， 反应 4.0h， 生成 allyl 4,6-di-O-benzoyl-α-D-mannopyranoside
  参考文献：
  名称：

  A practical synthesis of α-d-Manp-(1→3)-α-d-Manp-(1→2)-[α-d-Glcp-(1→3)]-α-d-Manp-(1→2)-α-d-Manp-(1→2)-α-d-Manp, an O-specific heterohexasaccharide fragment of Citrobacter braakii O7a, 3b, 1c

  摘要：

  An O-specific heterohexasaccharide fragment of Citrobacter braakii O7a, 3b, 1c, alpha-D-Manp-(1-->3)-alpha-D-Manp-(1-->2)-[alpha-D-Glcp(1-->3)] alpha-D-Manp-(1-->2)-alpha-D-Manp-(1-->2)-alpha-D-Manp was synthesized as its methyl glycoside. Acetylation of allyl 4,6-O-benzylidene-alpha-D-mannopyranoside, followed by debenzylidenization and benzoylation gave allyl 2,3-di-O-acetyl-4,6-di-O-benzoyl-alpha-D-mannopyranoside (3), and subsequent deacetylation of 3 with CH3COCl-MeOH gave the monosaccharide acceptor 4. Condensation of isopropyl 2,3,4,6-tetra-O-benzyl-1-thio-beta-D-glucopyranoside (6) with 4 selectively afforded the alpha-(l-->3)-linked disaccharide 7. Condensation of 7 with the (1-->3)-linked disaccharide donor 9, followed by deallylation and trichloroacetimidation, afforded the tetrasaccharide donor 12. Coupling of 12 with disaccharide acceptor 13, followed by debenzylation and deacylation, furnished the target heterohexasaccharide 16. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(03)00381-1