methyl (2R,4S,5R,6R)-5-acetamido-6-[(R)-[(2R,6R,8R,9R,10S)-9-acetamido-10-hydroxy-5-oxo-8-[(1R,2R)-1,2,3-trihydroxypropyl]-1,7-dioxa-4-azaspiro[5.5]undecan-2-yl]-hydroxymethyl]-4-hydroxy-2-(2-trimethylsilylethoxy)oxane-2-carboxylate | 173911-63-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl (2R,4S,5R,6R)-5-acetamido-6-[(R)-[(2R,6R,8R,9R,10S)-9-acetamido-10-hydroxy-5-oxo-8-[(1R,2R)-1,2,3-trihydroxypropyl]-1,7-dioxa-4-azaspiro[5.5]undecan-2-yl]-hydroxymethyl]-4-hydroxy-2-(2-trimethylsilylethoxy)oxane-2-carboxylate
• CAS: 173911-63-2
• 化学式: C₂₈H₄₉N₃O₁₅Si
• 分子量: 695.794
• InChiKey: ZBGOHGDDDVRUNL-UVJQLRSXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -4.19
• 重原子数：
  47
• 可旋转键数：
  13
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.86
• 拓扑面积：
  272
• 氢给体数：
  9
• 氢受体数：
  15

反应信息

• 作为反应物：
  描述：

  methyl (2R,4S,5R,6R)-5-acetamido-6-[(R)-[(2R,6R,8R,9R,10S)-9-acetamido-10-hydroxy-5-oxo-8-[(1R,2R)-1,2,3-trihydroxypropyl]-1,7-dioxa-4-azaspiro[5.5]undecan-2-yl]-hydroxymethyl]-4-hydroxy-2-(2-trimethylsilylethoxy)oxane-2-carboxylate 在 sodium hydroxide 作用下， 以 甲醇 为溶剂， 反应 24.0h， 以85%的产率得到Sodium; (2R,4S,5R,6R)-5-acetylamino-6-{(R)-[(2R,6R,8R,9R,10S)-9-acetylamino-10-hydroxy-5-oxo-8-((1R,2R)-1,2,3-trihydroxy-propyl)-1,7-dioxa-4-aza-spiro[5.5]undec-2-yl]-hydroxy-methyl}-4-hydroxy-2-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-2-carboxylate
  参考文献：
  名称：

  Synthesis of a Bis(sialic acid) 8,9-Lactam

  摘要：

  Methyl [2-(trimethylsilyl)ethyl 5-acetamido-9-azido-4-O-benzoyl-3,5,9-trideoxy-D-glycero-alpha-D-galacto- 2-nonulopyranosid]onate was sialylated with methyl (ethyl 5-acetamido-4,7,8,9-tetra-O-acetyl-2-thio-3-(phenylthio)- 2,3,5-trideoxy-D-erythro-alpha-L-gluco-2-nonulopyranosid)onate to give the corresponding bis(sialic acid) derivative in 23% yield. Removal of protecting groups, reduction of the azido group to an amino group, and removal of the auxiliary thiophenyl group gave the desired bis(sialic acid) 8,9-lactam. Comparison of the H-1 NMR spectra and energy-minimized (MM3) structures of the bis(sialic acid) lactam with those of the corresponding bis(sialic acid) lactone showed the conformations of the two compounds to be very similar (RMS = 0.027 Angstrom).

  DOI：

  10.1021/jo950994p
• 作为产物：
  描述：

  methyl (2R,4S,5R,6R)-5-acetamido-6-[(R)-[(2R,6S,8R,9R,10R,11S)-9-acetamido-10-hydroxy-5-oxo-11-phenylsulfanyl-8-[(1R,2R)-1,2,3-trihydroxypropyl]-1,7-dioxa-4-azaspiro[5.5]undecan-2-yl]-hydroxymethyl]-4-hydroxy-2-(2-trimethylsilylethoxy)oxane-2-carboxylate 在 镍 、 三苯基膦 作用下， 生成 methyl (2R,4S,5R,6R)-5-acetamido-6-[(R)-[(2R,6R,8R,9R,10S)-9-acetamido-10-hydroxy-5-oxo-8-[(1R,2R)-1,2,3-trihydroxypropyl]-1,7-dioxa-4-azaspiro[5.5]undecan-2-yl]-hydroxymethyl]-4-hydroxy-2-(2-trimethylsilylethoxy)oxane-2-carboxylate
  参考文献：
  名称：

  Synthesis of a Bis(sialic acid) 8,9-Lactam

  摘要：

  Methyl [2-(trimethylsilyl)ethyl 5-acetamido-9-azido-4-O-benzoyl-3,5,9-trideoxy-D-glycero-alpha-D-galacto- 2-nonulopyranosid]onate was sialylated with methyl (ethyl 5-acetamido-4,7,8,9-tetra-O-acetyl-2-thio-3-(phenylthio)- 2,3,5-trideoxy-D-erythro-alpha-L-gluco-2-nonulopyranosid)onate to give the corresponding bis(sialic acid) derivative in 23% yield. Removal of protecting groups, reduction of the azido group to an amino group, and removal of the auxiliary thiophenyl group gave the desired bis(sialic acid) 8,9-lactam. Comparison of the H-1 NMR spectra and energy-minimized (MM3) structures of the bis(sialic acid) lactam with those of the corresponding bis(sialic acid) lactone showed the conformations of the two compounds to be very similar (RMS = 0.027 Angstrom).

  DOI：

  10.1021/jo950994p