Methyl 5-acetamido-4-O-benzyl-3,5-dideoxy-8,9-O-isopropylidene-3-phenylthio-β-D-erythro-L-gluco-2-nonulopyranosonate-diethylphosphite | 353301-93-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: Methyl 5-acetamido-4-O-benzyl-3,5-dideoxy-8,9-O-isopropylidene-3-phenylthio-β-D-erythro-L-gluco-2-nonulopyranosonate-diethylphosphite
• CAS: 353301-93-6
• 化学式: C₃₄H₄₆NO₁₂PS
• 分子量: 723.779
• InChiKey: XYAHVJGQZODIJA-YRPGNGHASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.91
• 重原子数：
  49.0
• 可旋转键数：
  16.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  146.31
• 氢给体数：
  1.0
• 氢受体数：
  13.0

反应信息

• 作为反应物：
  描述：

  Methyl 5-acetamido-4-O-benzyl-3,5-dideoxy-8,9-O-isopropylidene-3-phenylthio-β-D-erythro-L-gluco-2-nonulopyranosonate-diethylphosphite 、 methyl (2S,4S,5S,6R)-5-acetamido-4-[tert-butyl(dimethyl)silyl]oxy-6-[(1R,2R)-3-[tert-butyl(dimethyl)silyl]oxy-1,2-dihydroxypropyl]-2-[(2S,3R,4S,5S,6R)-2-[(2R,3R,4S,5R,6R)-5-(2,2-dimethylpropanoyloxy)-4,6-bis(phenylmethoxy)-2-(phenylmethoxymethyl)oxan-3-yl]oxy-5-hydroxy-3-phenylmethoxy-6-(phenylmethoxymethyl)oxan-4-yl]oxyoxane-2-carboxylate 在 三氟甲磺酸三甲基硅酯 作用下， 以 乙腈 为溶剂， 反应 2.0h， 以54%的产率得到methyl (2R,3S,4R,5S,6R)-5-acetamido-2-[(1S,2R)-1-[(2R,3S,4S,6S)-3-acetamido-4-[tert-butyl(dimethyl)silyl]oxy-6-[(2S,3R,4S,5S,6R)-2-[(2R,3R,4S,5R,6R)-5-(2,2-dimethylpropanoyloxy)-4,6-bis(phenylmethoxy)-2-(phenylmethoxymethyl)oxan-3-yl]oxy-5-hydroxy-3-phenylmethoxy-6-(phenylmethoxymethyl)oxan-4-yl]oxy-6-methoxycarbonyloxan-2-yl]-3-[tert-butyl(dimethyl)silyl]oxy-1-hydroxypropan-2-yl]oxy-6-[(S)-acetyloxy-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]methyl]-4-phenylmethoxy-3-phenylsulfanyloxane-2-carboxylate
  参考文献：
  名称：

  Synthesis of Ganglioside GD3 and its Comparison with Bovine GD3 with Regard to Oligodendrocyte Apoptosis Mitochondrial Damage

  摘要：

  2,3-Dehydroneuraminic acid derivative 5 was transformed in five efficient steps into sialyl donor 2, which has a phenylthio group on the beta-side of the 3-position for anchimeric assistance and a diethyl phosphite residue as leaving group at the anomeric carbon. The known GM3 intermediate 10 was transformed into the 4b,4c,8c-O-unprotected acceptor 3, which was then allowed to react with 2 by using TMSOTf as catalyst and acetonitrile as solvent to afford the desired tetrasaccharide 12, which has an alpha(2-8)-linkage between two neuraminic acid residues. Removal of the phenylthio group gave intermediate 13, which was transformed into O-tetraosyl trichloroacetimidate 16 as glycosyl donor. Application of the azidosphingosine glycosylation procedure furnished GD3 (1) in high overall yield. Comparison of synthetic GD3 with bovine-brain-derived GD3 showed that there were similar effects in GD3-triggered uncoupling of mitochondrial respiration and in induction of apoptosis in oligodendrocytes.

  DOI：

  10.1002/1521-3765(20010518)7:10<2178::aid-chem2178>3.0.co;2-e
• 作为产物：
  描述：

  methyl 5-acetamido-8,9-O-isopropylidene-2,3,5-trideoxy-D-glycero-D-galacto-non-2-enopyranosonate 在 吡啶 、 N-溴代丁二酰亚胺(NBS) 、 sodium hydride 、 N,N-二异丙基乙胺 作用下， 以 四氢呋喃 、 水 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 3.17h， 生成 Methyl 5-acetamido-4-O-benzyl-3,5-dideoxy-8,9-O-isopropylidene-3-phenylthio-β-D-erythro-L-gluco-2-nonulopyranosonate-diethylphosphite
  参考文献：
  名称：

  Synthesis of Ganglioside GD3 and its Comparison with Bovine GD3 with Regard to Oligodendrocyte Apoptosis Mitochondrial Damage

  摘要：

  2,3-Dehydroneuraminic acid derivative 5 was transformed in five efficient steps into sialyl donor 2, which has a phenylthio group on the beta-side of the 3-position for anchimeric assistance and a diethyl phosphite residue as leaving group at the anomeric carbon. The known GM3 intermediate 10 was transformed into the 4b,4c,8c-O-unprotected acceptor 3, which was then allowed to react with 2 by using TMSOTf as catalyst and acetonitrile as solvent to afford the desired tetrasaccharide 12, which has an alpha(2-8)-linkage between two neuraminic acid residues. Removal of the phenylthio group gave intermediate 13, which was transformed into O-tetraosyl trichloroacetimidate 16 as glycosyl donor. Application of the azidosphingosine glycosylation procedure furnished GD3 (1) in high overall yield. Comparison of synthetic GD3 with bovine-brain-derived GD3 showed that there were similar effects in GD3-triggered uncoupling of mitochondrial respiration and in induction of apoptosis in oligodendrocytes.

  DOI：

  10.1002/1521-3765(20010518)7:10<2178::aid-chem2178>3.0.co;2-e