(4S,5S,2E)-5-amino-N-diphenylmethylene-1-O-benzyl-2-hexen-1,4-diol | 194146-29-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (4S,5S,2E)-5-amino-N-diphenylmethylene-1-O-benzyl-2-hexen-1,4-diol
• 英文别名: (E,2S,3S)-2-(benzhydrylideneamino)-6-phenylmethoxyhex-4-en-3-ol
• CAS: 194146-29-7
• 化学式: C₂₆H₂₇NO₂
• 分子量: 385.506
• InChiKey: VAIURUHMPNDENE-BFAOIYKGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.05
• 重原子数：
  29.0
• 可旋转键数：
  9.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  41.82
• 氢给体数：
  1.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  (4S,5S,2E)-5-amino-N-diphenylmethylene-1-O-benzyl-2-hexen-1,4-diol 在 potassium dioxotetrahydroxoosmate(VI) 甲基磺酰胺 、 potassium carbonate 、 potassium hexacyanoferrate(III) 、 sodium sulfite 作用下， 以 水 、 叔丁醇 为溶剂， 反应 0.33h， 生成 (4R,5S)-5-(Benzhydrylidene-amino)-1-benzyloxy-hexane-2,3,4-triol
  参考文献：
  名称：

  Glycosidase Inhibitors:  Synthesis of Enantiomerically Pure Aza-Sugars from Schiff Base Amino Esters via Tandem Reduction-Alkenylation and Osmylation

  摘要：

  Nitrogen-in-the-ring "aza-sugars" have been synthesized in enantiomerically pure form from the amino acid L-alanine in excellent overall yield. The O'Donnell's Schiff base of L-alanine methyl ester 9a was converted to ate-sugar L-fuco-1-deoxy-nojirimycin, 18, and to the epimer L-gulo-1-deoxy-nojirimycin, 20, in eight steps. The overall yields were 20 and 29%, respectively. The methodology for the efficient generation of silyl- and benzyl-protected (E)-3-lithio-2-propen-1-ols, and the use of these alkenyllithiums with iBu(5)Al(2)H as nucleophiles in the three-selective tandem reduction-alkenylation of the Schiff base esters is described. Osmium-catalyzed cis-oxygenation of the resulting olefin products was selective for the galacto (fuco) amino polyols in all cases for the acyclic olefins, and was gulo-selective for the cyclic D-4,5-dihydropyridine pivalate, 17c. TEMPO-NaOCl was selective for oxidation of the primary position of the acyclic Schiff bases, and allowed for minimal protection/deprotection of the intermediates. The resulting N-benzhydryl heterocycles were easily deprotected with H-2-Pd at atmospheric pressure.

  DOI：

  10.1021/jo9820115
• 作为产物：
  描述：

  L-丙氨酸,N-(二苯亚甲基)-,甲基酯 、 (E)-{[(3-bromoallyl)oxy]methyl}benzene 在 叔丁基锂 、 i-Bu₂AlH*i-Bu₃Al 作用下， 以 正己烷 为溶剂， 以20%的产率得到(4S,5S,2E)-5-amino-N-diphenylmethylene-1-O-benzyl-2-hexen-1,4-diol
  参考文献：
  名称：

  Glycosidase Inhibitors:  Synthesis of Enantiomerically Pure Aza-Sugars from Schiff Base Amino Esters via Tandem Reduction-Alkenylation and Osmylation

  摘要：

  Nitrogen-in-the-ring "aza-sugars" have been synthesized in enantiomerically pure form from the amino acid L-alanine in excellent overall yield. The O'Donnell's Schiff base of L-alanine methyl ester 9a was converted to ate-sugar L-fuco-1-deoxy-nojirimycin, 18, and to the epimer L-gulo-1-deoxy-nojirimycin, 20, in eight steps. The overall yields were 20 and 29%, respectively. The methodology for the efficient generation of silyl- and benzyl-protected (E)-3-lithio-2-propen-1-ols, and the use of these alkenyllithiums with iBu(5)Al(2)H as nucleophiles in the three-selective tandem reduction-alkenylation of the Schiff base esters is described. Osmium-catalyzed cis-oxygenation of the resulting olefin products was selective for the galacto (fuco) amino polyols in all cases for the acyclic olefins, and was gulo-selective for the cyclic D-4,5-dihydropyridine pivalate, 17c. TEMPO-NaOCl was selective for oxidation of the primary position of the acyclic Schiff bases, and allowed for minimal protection/deprotection of the intermediates. The resulting N-benzhydryl heterocycles were easily deprotected with H-2-Pd at atmospheric pressure.

  DOI：

  10.1021/jo9820115