(S)-N^α-phthaloyl-O-2,6-dichlorobenzyltyrosinylglycine tert-butyl ester | 306775-52-0

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: (S)-N^α-phthaloyl-O-2,6-dichlorobenzyltyrosinylglycine tert-butyl ester
• 英文别名: Pht-Tyr(2,6-Cl2-Bn)-Gly-OtBu；tert-butyl 2-[[(2S)-3-[4-[(2,6-dichlorophenyl)methoxy]phenyl]-2-(1,3-dioxoisoindol-2-yl)propanoyl]amino]acetate
• CAS: 306775-52-0
• 化学式: C₃₀H₂₈Cl₂N₂O₆
• 分子量: 583.468
• InChiKey: NUYGRDINJAEBGI-VWLOTQADSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.9
• 重原子数：
  40
• 可旋转键数：
  11
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  102
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  (S)-N^α-phthaloyl-O-2,6-dichlorobenzyltyrosinylglycine tert-butyl ester 在 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 以100%的产率得到(S)-N^α-phthaloyl-O-2,6-dichlorobenzyltyrosinylglycine
  参考文献：
  名称：

  Efficient Synthesis of (S)-4-Phthalimido-1,3,4,5- tetrahydro-8-(2,6-dichlorobenzyloxy)-3-oxo-2H-2-benzazepin-2-acetic Acid (Pht-Hba(2,6-Cl₂-Bn)-Gly-OH)¹

  摘要：

  4-Amino-2-benzazepin-3-ones have proven very useful for studying the biologically active conformations of peptides. The synthesis of Pht-Aba-Xaa-OH by reaction of the corresponding 1,3-oxazolidin-5-one with trifluoromethanesulfonic acid (TFMSA) has been reported in the literature. However, when this procedure was applied to the preparation of Pht-Hba(Bn)-Gly-OH 8, many byproducts were formed and the yield of the desired aminobenzazepinones 7 and 8 was very low. We report in this paper an efficient methodology for the synthesis of Pht-Hba(2,6-Cl-2-Bn)-Gly-OH 17 starting from the commercially available tyro sine. In our procedure, the dipeptide Pht-Tyr(2,6-Cl-2-Bn)-Gly-OH 15 is converted,to the 1,3-oxazolidin-5-one 16 Which then undergoes Friedel-Crafts cyclization in the presence of tin tetrachloride to afford the desired 4-phthalimido-1,3,4,5-tetrahydro-8-(2,6-dichlorobenzyloxy)-2-benzazepin-3-one 17 in excellent yield.

  DOI：

  10.1021/jo000530d
• 作为产物：
  描述：

  2,6-二氯苄基溴 在 sodium hydroxide 、 (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、 1-羟基苯并三唑 、 copper(II) sulfate 、 三乙胺 、 N,N-二异丙基乙胺 作用下， 以 1,4-二氧六环 、 甲醇 、 二氯甲烷 、 水 为溶剂， 反应 15.0h， 生成 (S)-N^α-phthaloyl-O-2,6-dichlorobenzyltyrosinylglycine tert-butyl ester
  参考文献：
  名称：

  Efficient Synthesis of (S)-4-Phthalimido-1,3,4,5- tetrahydro-8-(2,6-dichlorobenzyloxy)-3-oxo-2H-2-benzazepin-2-acetic Acid (Pht-Hba(2,6-Cl₂-Bn)-Gly-OH)¹

  摘要：

  4-Amino-2-benzazepin-3-ones have proven very useful for studying the biologically active conformations of peptides. The synthesis of Pht-Aba-Xaa-OH by reaction of the corresponding 1,3-oxazolidin-5-one with trifluoromethanesulfonic acid (TFMSA) has been reported in the literature. However, when this procedure was applied to the preparation of Pht-Hba(Bn)-Gly-OH 8, many byproducts were formed and the yield of the desired aminobenzazepinones 7 and 8 was very low. We report in this paper an efficient methodology for the synthesis of Pht-Hba(2,6-Cl-2-Bn)-Gly-OH 17 starting from the commercially available tyro sine. In our procedure, the dipeptide Pht-Tyr(2,6-Cl-2-Bn)-Gly-OH 15 is converted,to the 1,3-oxazolidin-5-one 16 Which then undergoes Friedel-Crafts cyclization in the presence of tin tetrachloride to afford the desired 4-phthalimido-1,3,4,5-tetrahydro-8-(2,6-dichlorobenzyloxy)-2-benzazepin-3-one 17 in excellent yield.

  DOI：

  10.1021/jo000530d