N-benzyloxycarbonyl-O-tosyl-(Z)dehydrotyrosine | 145763-43-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂酸及其衍生物
• 英文名称: N-benzyloxycarbonyl-O-tosyl-(Z)dehydrotyrosine
• CAS: 145763-43-5
• 化学式: C₂₄H₂₁NO₇S
• 分子量: 467.499
• InChiKey: VKVILDUSBHLCKQ-JCMHNJIXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.11
• 重原子数：
  33.0
• 可旋转键数：
  8.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  119.0
• 氢给体数：
  2.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  N-benzyloxycarbonyl-O-tosyl-(Z)dehydrotyrosine 在 N-甲基吗啉 、 [Rh((R,R)-DIPAMP)(COD)]BF₄ 、 氢气 、 N,N'-二环己基碳二亚胺 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 25.0 ℃ 、1000.0 kPa 条件下， 反应 66.0h， 生成
  参考文献：
  名称：

  Diastereoselective hydrogenation of monodehydro enkephalins controlled by chiral rhodium catalysts

  摘要：

  Protected (Z)dehydrophenylalanyl-Leu-enkephalin, (Z)dehydrotyrosyl-Leu-enkephalin and (Z)dehydrotyrosyl-(R)Ala2-Leu-enkephalin, have been synthesized. These compounds have been hydrogenated to give protected Leu-enkephalins in the presence of various chiral rhodium complexes. Deprotection of the product gave Leu-enkephalins or epimers, ytterbium in liquid ammonia allows smooth deprotection of NHCBz or OTs groups on small amounts of peptides. Strong stereocontrol could be achieved by suitable choice of the chiral catalyst. This method has good potential for stereospecific labelling of enkephalins and other small peptides.

  DOI：

  10.1016/s0957-4166(00)82083-2
• 作为产物：
  描述：

  4-tosyloxybenzaldehyde 在 sodium hydroxide 、 potassium tert-butylate 作用下， 以 丙酮 为溶剂， 反应 6.17h， 生成 N-benzyloxycarbonyl-O-tosyl-(Z)dehydrotyrosine
  参考文献：
  名称：

  Diastereoselective hydrogenation of monodehydro enkephalins controlled by chiral rhodium catalysts

  摘要：

  Protected (Z)dehydrophenylalanyl-Leu-enkephalin, (Z)dehydrotyrosyl-Leu-enkephalin and (Z)dehydrotyrosyl-(R)Ala2-Leu-enkephalin, have been synthesized. These compounds have been hydrogenated to give protected Leu-enkephalins in the presence of various chiral rhodium complexes. Deprotection of the product gave Leu-enkephalins or epimers, ytterbium in liquid ammonia allows smooth deprotection of NHCBz or OTs groups on small amounts of peptides. Strong stereocontrol could be achieved by suitable choice of the chiral catalyst. This method has good potential for stereospecific labelling of enkephalins and other small peptides.

  DOI：

  10.1016/s0957-4166(00)82083-2