methyl (phenyl 4,7,8-tri-O-benzyl-9-O-triphenylmethyl-3-deoxy-2-thio-β-D-glycero-D-galacto-2-nonulopyranosid)onate | 243866-51-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 三苯基化合物
• 英文名称: methyl (phenyl 4,7,8-tri-O-benzyl-9-O-triphenylmethyl-3-deoxy-2-thio-β-D-glycero-D-galacto-2-nonulopyranosid)onate
• 英文别名: methyl (2R,4S,5R,6R)-6-[(1R,2R)-1,2-bis(phenylmethoxy)-3-trityloxypropyl]-5-hydroxy-4-phenylmethoxy-2-phenylsulfanyloxane-2-carboxylate
• CAS: 243866-51-5
• 化学式: C₅₆H₅₄O₈S
• 分子量: 887.106
• InChiKey: CPPUPVYKHGMCHY-LDSDOFHPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.5
• 重原子数：
  65
• 可旋转键数：
  21
• 环数：
  8.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  118
• 氢给体数：
  1
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  methyl (phenyl 4,7,8-tri-O-benzyl-9-O-triphenylmethyl-3-deoxy-2-thio-β-D-glycero-D-galacto-2-nonulopyranosid)onate 在 Dowex 50W-X₈ (H⁺ form) 、 sodium hydride 作用下， 以 甲醇 、 氯仿 、 N,N-二甲基甲酰胺 为溶剂， 反应 41.0h， 生成 methyl (phenyl 4,5,7,8-tetra-O-benzyl-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：

  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 barium hydroxide octahydrate 、 barium(II) oxide 作用下， 以 N,N-二甲基甲酰胺 、 甲醇 为溶剂， 反应 29.0h， 以71%的产率得到methyl (phenyl 4,7,8-tri-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

文献信息

• Selective Protecting Method for the Individual Hydroxyl Groups of Kdn
  作者：Shoji Akai、Takahiro Nakagawa、Yasuhiro Kajihara、Ken-ichi Sato

  DOI：10.1080/07328309908544026

  日期：1999.1

  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.