5-Amino-4-<(1'R)-<(2'-azido-1'-tert-butyldimethylsilyl)oxy>ethyl>-1-(2'-cyanoethyl)imidazole | 151256-29-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 5-Amino-4-<(1'R)-<(2'-azido-1'-tert-butyldimethylsilyl)oxy>ethyl>-1-(2'-cyanoethyl)imidazole
• 英文别名: 5-Amino-4-{(1'R)-[(2'-azido-1'-tert-butyldimethylsilyl)oxy]ethyl}-1-(2'-cyanoethyl)imidazole；3-[5-amino-4-[(1R)-2-azido-1-[tert-butyl(dimethyl)silyl]oxyethyl]imidazol-1-yl]propanenitrile
• CAS: 151256-29-0
• 化学式: C₁₄H₂₅N₇OSi
• 分子量: 335.484
• InChiKey: FWVWLVJVZGILFD-LLVKDONJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.75
• 重原子数：
  23
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  91.2
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  5-Amino-4-<(1'R)-<(2'-azido-1'-tert-butyldimethylsilyl)oxy>ethyl>-1-(2'-cyanoethyl)imidazole 在 1,3-丙二硫醇 、 5A molecular sieve 、 三乙胺 、 三氟乙酸 作用下， 以 甲醇 为溶剂， 反应 3.0h， 生成 (8R)-3-(2'-Cyanoethyl)-8-<(tert-butyldimethylsilyl)oxy>-3,6,7,8-tetrahydroimidazo<4,5-d><1,3>diazepine
  参考文献：
  名称：

  Chirospecific synthesis of the tetrahydroimidazodiazepinol aglycon of pentostatin and its analogs

  摘要：

  A high-yield, versatile method is presented for the stereo- and regiospecific synthesis of the aglycon of pentostatin and its analogues using the L-vinylglycine 1 as the chiral educt. From this four-carbon asymmetric core, containing the contiguous carbons of the target ring system, the synthetic process proceeds with development of the R absolute stereochemistry for the hydroxyl group at C-8 and nitrogen or potential nitrogen functions at the other three carbons. Conversion of the alpha-amino ester to an alpha-amino nitrile is followed by formation of the 1,4,5-trisubstituted aminoimidazole. After generating another amine by reduction of an azide, the diazepine is then annealed by treatment with orthoformate. Using this process, a series of (8R)-8-hydroxy-substituted tetrahydroimidazodiazepinols has been prepared. The protecting group protocol allows specific deprotection at N-3 for subsequent glycosylation and other substitution.

  DOI：

  10.1021/jo00074a041
• 作为产物：
  描述：

  (2S,3R)-4-Azido-2-<(tert-butoxycarbonyl)amino>-3-<(tert-butyldimethylsilyl)oxy>butanamide 在 吡啶 、 5A molecular sieve 、 对甲苯磺酰氯 、 三氟乙酸 作用下， 以 二氯甲烷 、 水 、 乙腈 为溶剂， 反应 100.75h， 生成 5-Amino-4-<(1'R)-<(2'-azido-1'-tert-butyldimethylsilyl)oxy>ethyl>-1-(2'-cyanoethyl)imidazole
  参考文献：
  名称：

  Chirospecific synthesis of the tetrahydroimidazodiazepinol aglycon of pentostatin and its analogs

  摘要：

  A high-yield, versatile method is presented for the stereo- and regiospecific synthesis of the aglycon of pentostatin and its analogues using the L-vinylglycine 1 as the chiral educt. From this four-carbon asymmetric core, containing the contiguous carbons of the target ring system, the synthetic process proceeds with development of the R absolute stereochemistry for the hydroxyl group at C-8 and nitrogen or potential nitrogen functions at the other three carbons. Conversion of the alpha-amino ester to an alpha-amino nitrile is followed by formation of the 1,4,5-trisubstituted aminoimidazole. After generating another amine by reduction of an azide, the diazepine is then annealed by treatment with orthoformate. Using this process, a series of (8R)-8-hydroxy-substituted tetrahydroimidazodiazepinols has been prepared. The protecting group protocol allows specific deprotection at N-3 for subsequent glycosylation and other substitution.

  DOI：

  10.1021/jo00074a041

文献信息

• Chirospecific synthesis of the tetrahydroimidazodiazepinol aglycon of pentostatin and its analogs
  作者：Thien Van Truong、Henry Rapoport

  DOI：10.1021/jo00074a041

  日期：1993.10

  A high-yield, versatile method is presented for the stereo- and regiospecific synthesis of the aglycon of pentostatin and its analogues using the L-vinylglycine 1 as the chiral educt. From this four-carbon asymmetric core, containing the contiguous carbons of the target ring system, the synthetic process proceeds with development of the R absolute stereochemistry for the hydroxyl group at C-8 and nitrogen or potential nitrogen functions at the other three carbons. Conversion of the alpha-amino ester to an alpha-amino nitrile is followed by formation of the 1,4,5-trisubstituted aminoimidazole. After generating another amine by reduction of an azide, the diazepine is then annealed by treatment with orthoformate. Using this process, a series of (8R)-8-hydroxy-substituted tetrahydroimidazodiazepinols has been prepared. The protecting group protocol allows specific deprotection at N-3 for subsequent glycosylation and other substitution.