allyl 4,6-O-benzylidene-2,3-di-O-mesyl-β-D-galactopyranoside | 1385089-98-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃二恶英
• 英文名称: allyl 4,6-O-benzylidene-2,3-di-O-mesyl-β-D-galactopyranoside
• 英文别名: [(2S,4aR,6R,7R,8S,8aS)-7-methylsulfonyloxy-2-phenyl-6-prop-2-enoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] methanesulfonate
• CAS: 1385089-98-4
• 化学式: C₁₈H₂₄O₁₀S₂
• 分子量: 464.515
• InChiKey: TWMQNUJJVVOARF-CMURFVSUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  30
• 可旋转键数：
  8
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  140
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  allyl 4,6-O-benzylidene-2,3-di-O-mesyl-β-D-galactopyranoside 、 苯甲醇 在 potassium tert-butylate 作用下， 以 苯 为溶剂， 反应 48.0h， 以71%的产率得到allyl 3-O-benzyl-4,6-O-benzylidene-β-D-idopyranoside
  参考文献：
  名称：

  A Scalable Approach to Obtaining Orthogonally Protected β-d-Idopyranosides

  摘要：

  A practical method to obtain orthogonally protected D-idopyranose from D-galactose has been developed, which is the first method to enable synthesis of the challenging beta-D-idopyranoside linkage. The method relies on a key double inversion at O-2 and O-3 in an easily prepared D-galactose derivative, which proceeds regio- and stereoselectively through a 2,3-anhydrotalopyranoside; reaction using a selection of alkoxides affords exclusively the 3-O-alkylidopyranoside, which can be used to generate an orthogonally protected monosaccharide. The process is scalable and requires minimal purification, so it could be used to produce building blocks to aid in the synthesis of various beta-idopyranose-containing oligosaccharide targets to further probe their biological functions.

  DOI：

  10.1021/jo300764k
• 作为产物：
  描述：

  甲基磺酰氯 、 allyl 4,6-O-benzylidene-β-D-galactopyranoside 在 吡啶 作用下， 以 二氯甲烷 为溶剂， 反应 24.0h， 以83%的产率得到allyl 4,6-O-benzylidene-2,3-di-O-mesyl-β-D-galactopyranoside
  参考文献：
  名称：

  A Scalable Approach to Obtaining Orthogonally Protected β-d-Idopyranosides

  摘要：

  A practical method to obtain orthogonally protected D-idopyranose from D-galactose has been developed, which is the first method to enable synthesis of the challenging beta-D-idopyranoside linkage. The method relies on a key double inversion at O-2 and O-3 in an easily prepared D-galactose derivative, which proceeds regio- and stereoselectively through a 2,3-anhydrotalopyranoside; reaction using a selection of alkoxides affords exclusively the 3-O-alkylidopyranoside, which can be used to generate an orthogonally protected monosaccharide. The process is scalable and requires minimal purification, so it could be used to produce building blocks to aid in the synthesis of various beta-idopyranose-containing oligosaccharide targets to further probe their biological functions.

  DOI：

  10.1021/jo300764k

文献信息

• A Scalable Approach to Obtaining Orthogonally Protected β-<scp>d</scp>-Idopyranosides
  作者：Rachel Hevey、Alizée Morland、Chang-Chun Ling

  DOI：10.1021/jo300764k

  日期：2012.8.17

  A practical method to obtain orthogonally protected D-idopyranose from D-galactose has been developed, which is the first method to enable synthesis of the challenging beta-D-idopyranoside linkage. The method relies on a key double inversion at O-2 and O-3 in an easily prepared D-galactose derivative, which proceeds regio- and stereoselectively through a 2,3-anhydrotalopyranoside; reaction using a selection of alkoxides affords exclusively the 3-O-alkylidopyranoside, which can be used to generate an orthogonally protected monosaccharide. The process is scalable and requires minimal purification, so it could be used to produce building blocks to aid in the synthesis of various beta-idopyranose-containing oligosaccharide targets to further probe their biological functions.