methyl (phenyl 9-O-triphenylmethyl-3-deoxy-2-thio-β-D-glycero-D-galacto-2-nonulopyranosid)onate | 243866-50-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl (phenyl 9-O-triphenylmethyl-3-deoxy-2-thio-β-D-glycero-D-galacto-2-nonulopyranosid)onate
• CAS: 243866-50-4
• 化学式: C₃₅H₃₆O₈S
• 分子量: 616.732
• InChiKey: CLYKTUGQEAFNKV-BAMRBWCQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.89
• 重原子数：
  44.0
• 可旋转键数：
  11.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  125.68
• 氢给体数：
  4.0
• 氢受体数：
  9.0

反应信息

• 作为反应物：
  描述：

  重氮甲烷 、 溴甲苯 、 methyl (phenyl 9-O-triphenylmethyl-3-deoxy-2-thio-β-D-glycero-D-galacto-2-nonulopyranosid)onate 在 sodium hydride 、 sodium methylate 作用下， 以 N,N-二甲基甲酰胺 、 甲醇 为溶剂， 反应 26.0h， 以45%的产率得到methyl (phenyl 4,5,7,8-tetra-O-benzyl-9-O-triphenylmethyl-3-deoxy-2-thio-β-D-glycero-D-galacto-2-nonulopyranosid)onate
  参考文献：
  名称：

  Selective Protecting Method for the Individual Hydroxyl Groups of Kdn

  摘要：

  Selective protection for the individual hydroxyl groups of methyl (phenyl 3-deoxy2-thio-beta-D-glycero-D-galacto-2-nonulopyranodis)onate (2) was examined. The 4-, 5-, and 7-hydroxyl groups of methyl (phenyl 3-deoxy-8,9-O-isopropylidene-2-thio-beta-D-glycero-D-galacto-2-nonulopyranosid)onate (3) were found selectively to be protected by t-butyldimethylsilyl, methoxymethyl, and benzoyl groups, respectively. In order to obtain the 8- and 9-hydroxyl derivatives selectively, methyl (phenyl 4,5,7-tri-O-acetyl-9-O-t-butyldimethylsilyl-3-deoxy-2-thio-beta-D-glycero-D-galacto-2-nonulopyranosid)onate (12) and methyl (phenyl 4,5,7,8-tetra-O-benzyl-9-O-triphenylmethyl-3-deoxy-2-thio-beta-D-glycero-D-galacto-2-nonulopyranosid)onate (19) were prepared in moderate yields.

  DOI：

  10.1080/07328309908544026
• 作为产物：
  描述：

  methyl (phenyl 4,5,7,8,9-penta-O-acetyl-3-deoxy-2-thio-β-D-glycero-D-galacto-2-nonulopyranosid)onate 在 吡啶 、 sodium methylate 作用下， 以 甲醇 为溶剂， 反应 19.0h， 生成 methyl (phenyl 9-O-triphenylmethyl-3-deoxy-2-thio-β-D-glycero-D-galacto-2-nonulopyranosid)onate
  参考文献：
  名称：

  Selective Protecting Method for the Individual Hydroxyl Groups of Kdn

  摘要：

  Selective protection for the individual hydroxyl groups of methyl (phenyl 3-deoxy2-thio-beta-D-glycero-D-galacto-2-nonulopyranodis)onate (2) was examined. The 4-, 5-, and 7-hydroxyl groups of methyl (phenyl 3-deoxy-8,9-O-isopropylidene-2-thio-beta-D-glycero-D-galacto-2-nonulopyranosid)onate (3) were found selectively to be protected by t-butyldimethylsilyl, methoxymethyl, and benzoyl groups, respectively. In order to obtain the 8- and 9-hydroxyl derivatives selectively, methyl (phenyl 4,5,7-tri-O-acetyl-9-O-t-butyldimethylsilyl-3-deoxy-2-thio-beta-D-glycero-D-galacto-2-nonulopyranosid)onate (12) and methyl (phenyl 4,5,7,8-tetra-O-benzyl-9-O-triphenylmethyl-3-deoxy-2-thio-beta-D-glycero-D-galacto-2-nonulopyranosid)onate (19) were prepared in moderate yields.

  DOI：

  10.1080/07328309908544026