3,3-diethyl-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-2-azetidinone | 143818-55-7

• 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: 3,3-diethyl-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-2-azetidinone
• 英文别名: Tert-butyl 4-(3,3-diethyl-4-oxoazetidin-2-yl)oxybenzoate
• CAS: 143818-55-7
• 化学式: C₁₈H₂₅NO₄
• 分子量: 319.401
• InChiKey: MLKWQSRLZFEPSX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  23
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  64.6
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  3,3-diethyl-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-2-azetidinone 在 盐酸 、 4-二甲氨基吡啶 、 ammonium hydroxide 、 草酰氯 、 苯甲醚 、 三乙胺 、 N,N-二甲基甲酰胺 、 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 反应 6.0h， 生成 4-<(4-carboxyphenyl)oxy>-3,3-diethyl-1-<<<(4-carbamoylphenyl)methyl>amino>carbonyl>-2-azetidinone
  参考文献：
  名称：

  Orally active .beta.-lactam inhibitors of human leukocyte elastase-1. Activity of 3,3-diethyl-2-azetidinones

  摘要：

  A thorough analysis of the mechanism of inhibition of human leukocyte elastase (HLE) by a monocyclic beta-lactam and the mechanism of beta-lactam hydrolysis led to the preparation of potent and highly stable inhibitors of HLE. This work led to the identification of 4-[(4-carboxyphenyl)-oxy]-3,3-diethyl-1-[[(phenylmethyl)amino]carbonyl]-2-azetidinone (2) as the first orally active inhibitor of human leukocyte elastase (HLE). Analogs of 2 with different substituents on the urea N were synthesized and evaluated for their activity in vitro against HLE as well as in vivo in a hamster lung hemorrhage model. Compounds with a methyl or a methoxy group in the para position of the benzene ring were very potent in both assays. The results are discussed on the basis of the proposed model for the binding of this class of inhibitors to HLE and a possible mechanism of inhibition is presented.

  DOI：

  10.1021/jm00099a003
• 作为产物：
  描述：

  2-ethyl-1-butenyl acetate 以 二氯甲烷 、 丙酮 为溶剂， 反应 0.5h， 生成 3,3-diethyl-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-2-azetidinone
  参考文献：
  名称：

  Orally active .beta.-lactam inhibitors of human leukocyte elastase-1. Activity of 3,3-diethyl-2-azetidinones

  摘要：

  A thorough analysis of the mechanism of inhibition of human leukocyte elastase (HLE) by a monocyclic beta-lactam and the mechanism of beta-lactam hydrolysis led to the preparation of potent and highly stable inhibitors of HLE. This work led to the identification of 4-[(4-carboxyphenyl)-oxy]-3,3-diethyl-1-[[(phenylmethyl)amino]carbonyl]-2-azetidinone (2) as the first orally active inhibitor of human leukocyte elastase (HLE). Analogs of 2 with different substituents on the urea N were synthesized and evaluated for their activity in vitro against HLE as well as in vivo in a hamster lung hemorrhage model. Compounds with a methyl or a methoxy group in the para position of the benzene ring were very potent in both assays. The results are discussed on the basis of the proposed model for the binding of this class of inhibitors to HLE and a possible mechanism of inhibition is presented.

  DOI：

  10.1021/jm00099a003

文献信息

• Orally active .beta.-lactam inhibitors of human leukocyte elastase. 2. Effect of C-4 substitution
  作者：William K. Hagmann、Amy L. Kissinger、Shrenik K. Shah、Paul E. Finke、Conrad P. Dorn、Karen A. Brause、Bonnie M. Ashe、Hazel Weston、Alan L. Maycock

  DOI：10.1021/jm00058a015

  日期：1993.3

  concern. Fortunately, compounds containing 4-hydroxybenzoic acid and 4-hydroxyphenylacetic acid ethers at C-4 were among the most active analogs. These phenolic acids are also found as urinary metabolites in healthy humans. Other heteroaryls at C-4 were also orally active in this model despite relatively modest enzyme activity.

  探索了改变3,3-二乙基-1-[（（苄氨基）羰基] -2-氮杂环丁酮的C-4取代基对HLE的抑制作用以及在HLE诱导的仓鼠肺损伤模型中的作用。在最有效的化合物中，k（obs）/ [I] = 6900 M-1 s-1的化合物在该位置的取代物似乎不与HLE强烈相互作用。但是，该位置的取代基对体内活性具有显着影响。用C-4芳基羧酸醚（在30 mg / kg po时抑制60-85％）实现了肺出血试验中最大的口服活性。基于这些化合物所建立的抑制机理，C-4取代基将被释放，因此，这些C-4取代基的药理学潜力受到极大关注。幸好，在C-4处含有4-羟基苯甲酸和4-羟基苯基乙酸醚的化合物是活性最高的类似物。这些酚酸也被发现是健康人的尿中代谢产物。尽管该酶活性相对适中，但在该模型中C-4处的其他杂芳基也具有口服活性。
• LABELLED ELASTASE INHIBITORS
  申请人：AMERSHAM INTERNATIONAL plc

  公开号：EP0927049A2

  公开（公告）日：1999-07-07
• US6375926B1
  申请人：——

  公开号：US6375926B1

  公开（公告）日：2002-04-23
• [EN] LABELLED ELASTASE INHIBITORS<br/>[FR] INHIBITEURS D'ELASTASE MARQUES
  申请人：——

  公开号：WO1998010800A2

  公开（公告）日：1998-03-19

  [EN] A human leucocyte elastase (HLE) inhibitor labelled with a detector moiety where the inhibitor is synthetic and has a molecular weight of less than 2000, is useful for the diagnostic imaging of sites of inflammation or infection in vivo, for labelling leucocytes in vitro, or for radiotherapy of arthritis. The HLE inhibitor is preferably a beta -lactam or an azetidinone.
  [FR] Inhibiteur d'élastase de leucocytes humains (HLE) marqué à l'aide d'une fraction de détection, qui est synthétique et possède un poids moléculaire inférieur à 2000. Ledit inhibiteur est utile pour l'imagerie diagnostique de sites d'inflammation ou d'infection in vivo, pour marquer des leucocytes in vitro ou pour la radiothérapie de l'arthrite. Ledit inhibiteur de HLE est de préférence un beta -lactame ou une azétidinone.
• Orally active .beta.-lactam inhibitors of human leukocyte elastase-1. Activity of 3,3-diethyl-2-azetidinones
  作者：Shrenik K. Shah、Conrad P. Dorn、Paul E. Finke、Jeffrey J. Hale、William K. Hagmann、Karen A. Brause、Gilbert O. Chandler、Amy L. Kissinger、Bonnie M. Ashe

  DOI：10.1021/jm00099a003

  日期：1992.10

  A thorough analysis of the mechanism of inhibition of human leukocyte elastase (HLE) by a monocyclic beta-lactam and the mechanism of beta-lactam hydrolysis led to the preparation of potent and highly stable inhibitors of HLE. This work led to the identification of 4-[(4-carboxyphenyl)-oxy]-3,3-diethyl-1-[[(phenylmethyl)amino]carbonyl]-2-azetidinone (2) as the first orally active inhibitor of human leukocyte elastase (HLE). Analogs of 2 with different substituents on the urea N were synthesized and evaluated for their activity in vitro against HLE as well as in vivo in a hamster lung hemorrhage model. Compounds with a methyl or a methoxy group in the para position of the benzene ring were very potent in both assays. The results are discussed on the basis of the proposed model for the binding of this class of inhibitors to HLE and a possible mechanism of inhibition is presented.