(S)-4-(o-tolyl)azetidin-2-one

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酰胺类
• 英文名称: (S)-4-(o-tolyl)azetidin-2-one
• 英文别名: (4S)-4-(2-methylphenyl)azetidin-2-one
• 化学式: C₁₀H₁₁NO
• 分子量: 161.203
• InChiKey: AOXGPABNMZJZPT-VIFPVBQESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  29.1
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (S)-4-(o-tolyl)azetidin-2-one 在 盐酸 、 水 作用下， 以77%的产率得到2-氨基-3-(2-甲基苯基)丙酸
  参考文献：
  名称：

  Enzymatic preparation of (S)-3-amino-3-(o-tolyl)propanoic acid, a key intermediate for the construction of Cathepsin inhibitors

  摘要：

  Enantiomerically pure (S)-3-amino-3-(o-tolyl)propanoic acid [(S)-6], identified as the preferred enantiomeric form for the construction of novel beta-amino acid derivatives as inhibitors of Cathepsin, was prepared through both indirect and direct enzymatic strategies. Resolution of hydroxymethylated beta-lactam (+/-)-1 through Burkholderia cepacia lipase PSIM-catalysed R-selective butyrylation (E > 200) was first carried out in t-BuOMe. Treatment of the unreacted (S)-1 with 18% HCl then furnished the desired (S)-6 center dot HCl. Next, Candida antarctica lipase B catalysed the ring cleavage of racemic 4-(o-tolyl)azetidin-2-one [(+/-)-2] with excellent R enantioselectivity (E > 200), either in t-BuOMe with added H2O as nucleophile or in H2O at 60 degrees C. Hydrolysis of the less reactive beta-lactam enantiomer [(S)-2] with 18% HCl afforded (S)-6 center dot HCl. A direct enzymatic route to enantiomeric (S)-6 was finally optimized through the lipase PSIM-catalysed S-enantioselective (E>200) hydrolysis of racemic ethyl 3-amino-3-(o-tolyl)propanoate [(+/-)-3] in t-BuOMe with added H2O at 45 degrees C or in H2O at 3 degrees C. (C) 2013 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcatb.2013.04.001
• 作为产物：
  描述：

  2-甲基苯乙烯 在 水 作用下， 以 甲基叔丁基醚 、 甲苯 为溶剂， 反应 5.0h， 生成 (S)-4-(o-tolyl)azetidin-2-one
  参考文献：
  名称：

  Enzymatic preparation of (S)-3-amino-3-(o-tolyl)propanoic acid, a key intermediate for the construction of Cathepsin inhibitors

  摘要：

  Enantiomerically pure (S)-3-amino-3-(o-tolyl)propanoic acid [(S)-6], identified as the preferred enantiomeric form for the construction of novel beta-amino acid derivatives as inhibitors of Cathepsin, was prepared through both indirect and direct enzymatic strategies. Resolution of hydroxymethylated beta-lactam (+/-)-1 through Burkholderia cepacia lipase PSIM-catalysed R-selective butyrylation (E > 200) was first carried out in t-BuOMe. Treatment of the unreacted (S)-1 with 18% HCl then furnished the desired (S)-6 center dot HCl. Next, Candida antarctica lipase B catalysed the ring cleavage of racemic 4-(o-tolyl)azetidin-2-one [(+/-)-2] with excellent R enantioselectivity (E > 200), either in t-BuOMe with added H2O as nucleophile or in H2O at 60 degrees C. Hydrolysis of the less reactive beta-lactam enantiomer [(S)-2] with 18% HCl afforded (S)-6 center dot HCl. A direct enzymatic route to enantiomeric (S)-6 was finally optimized through the lipase PSIM-catalysed S-enantioselective (E>200) hydrolysis of racemic ethyl 3-amino-3-(o-tolyl)propanoate [(+/-)-3] in t-BuOMe with added H2O at 45 degrees C or in H2O at 3 degrees C. (C) 2013 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcatb.2013.04.001

文献信息

• Enzymatic preparation of (S)-3-amino-3-(o-tolyl)propanoic acid, a key intermediate for the construction of Cathepsin inhibitors
  作者：Enikő Forró、Gábor Tasnádi、Ferenc Fülöp

  DOI：10.1016/j.molcatb.2013.04.001

  日期：2013.9

  Enantiomerically pure (S)-3-amino-3-(o-tolyl)propanoic acid [(S)-6], identified as the preferred enantiomeric form for the construction of novel beta-amino acid derivatives as inhibitors of Cathepsin, was prepared through both indirect and direct enzymatic strategies. Resolution of hydroxymethylated beta-lactam (+/-)-1 through Burkholderia cepacia lipase PSIM-catalysed R-selective butyrylation (E > 200) was first carried out in t-BuOMe. Treatment of the unreacted (S)-1 with 18% HCl then furnished the desired (S)-6 center dot HCl. Next, Candida antarctica lipase B catalysed the ring cleavage of racemic 4-(o-tolyl)azetidin-2-one [(+/-)-2] with excellent R enantioselectivity (E > 200), either in t-BuOMe with added H2O as nucleophile or in H2O at 60 degrees C. Hydrolysis of the less reactive beta-lactam enantiomer [(S)-2] with 18% HCl afforded (S)-6 center dot HCl. A direct enzymatic route to enantiomeric (S)-6 was finally optimized through the lipase PSIM-catalysed S-enantioselective (E>200) hydrolysis of racemic ethyl 3-amino-3-(o-tolyl)propanoate [(+/-)-3] in t-BuOMe with added H2O at 45 degrees C or in H2O at 3 degrees C. (C) 2013 Elsevier B.V. All rights reserved.