Cbz-Val-DL-Tic-DL-Val-CF3 | 137302-26-2

• 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: Cbz-Val-DL-Tic-DL-Val-CF3
• 英文别名: benzyl N-[(2S)-3-methyl-1-oxo-1-[3-[(1,1,1-trifluoro-4-methyl-2-oxopentan-3-yl)carbamoyl]-3,4-dihydro-1H-isoquinolin-2-yl]butan-2-yl]carbamate
• CAS: 137302-26-2；137429-52-8；137429-53-9；137429-54-0
• 化学式: C₂₉H₃₄F₃N₃O₅
• 分子量: 561.601
• InChiKey: IKRCWAVITYKYTF-VHYCJAOWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.5
• 重原子数：
  40
• 可旋转键数：
  10
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  105
• 氢给体数：
  2
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  (S)-(S)-2-(((benzyloxy)carbonyl)amino)-3-methylbutanoic (ethyl carbonic) anhydride 在 氢氧化钾 、 戴斯-马丁氧化剂 、 三乙胺 、 N,N'-羰基二咪唑 、 三氟乙酸 作用下， 以 四氢呋喃 、 乙醇 、 二氯甲烷 为溶剂， 反应 66.0h， 生成 Cbz-Val-DL-Tic-DL-Val-CF3
  参考文献：
  名称：

  Inhibition of human leukocyte elastase (HLE) by N-substituted peptidyl trifluoromethyl ketones

  摘要：

  A series of tripeptides possessing trifluoromethyl or aryl ketone residues at P1 were prepared and evaluated both in vitro and in vivo as potential inhibitors of human leukocyte elastase (HLE). Tripeptides containing non naturally occurring N-substituted glycine residues at the P2-position have been demonstrated to be potent in vitro inhibitors of HLE, with IC50 values in the submicromolar range. Sterically demanding substituents on the P2-nitrogen have no detrimental effect on in vitro potency. The inhibition process presumably acts via hemiketal formation with the active site Ser195 of HLE, and is facilitated by the strongly electron withdrawing trifluoromethyl functionality. Deletion of the amino acid at the P3-subsite region affords inactive compounds. Valine is the preferred residue at the P1-position, whereas the corresponding glycine, alanine, alpha,alpha-dimethylglycine, or phenylalanine analogues are all inactive. The compounds described herein all confer a high degree of in vitro specificity when tested against representative cysteine, aspartyl, metallo, and other serine proteases. One of the most potent in vitro inhibitors is (3RS)-N-[4-[[[(4-chlorophenyl)sulfonyl]amino]carbonyl]phenyl]oxomethyl]-L-valyl-N-(2,3-dihydro-1H-inden-2-yl)glycine N-[3-(1,1,1-trifluoro-4-methyl-2-oxopentyl)]amide (20i; BI-RA-260) (IC50 = 0.084-mu-M). Compound 20i was also tested in hamsters in an elastase-induced pulmonary hemorrhage (EPH) model. In this model, intratracheal (it.) administration of 20i, 5 min prior to HLE challenge, effectively inhibited hemorrhage in a dose-dependent manner with an ED50 of 4.8-mu-g. The inhibitor 20i, 20-mu-g administered it. 24, 48, and 72 h prior to HLE challenge, exhibits significant inhibition against hemorrhage at all time points (97%, 64% and 49%, respectively). In a 21-day chronic model of emphysema in hamsters, 200-mu-g of HLE administered it. caused an elastase-induced emphysema in the lungs which can be quantitated histologically utilizing image analysis. In this assay, 20i significantly inhibited pulmonary lesions associated with septal destruction and increased alveolar spaces, when dosed at 20-mu-g it. 5 min prior to challenge with HLE.

  DOI：

  10.1021/jm00082a005

文献信息

• Inhibition of human leukocyte elastase (HLE) by N-substituted peptidyl trifluoromethyl ketones
  作者：Jerry W. Skiles、Victor Fuchs、Clara Miao、Ronald Sorcek、Karl G. Grozinger、Scott C. Mauldin、Jana Vitous、Philip W. Mui、Stephen Jacober

  DOI：10.1021/jm00082a005

  日期：1992.2

  A series of tripeptides possessing trifluoromethyl or aryl ketone residues at P1 were prepared and evaluated both in vitro and in vivo as potential inhibitors of human leukocyte elastase (HLE). Tripeptides containing non naturally occurring N-substituted glycine residues at the P2-position have been demonstrated to be potent in vitro inhibitors of HLE, with IC50 values in the submicromolar range. Sterically demanding substituents on the P2-nitrogen have no detrimental effect on in vitro potency. The inhibition process presumably acts via hemiketal formation with the active site Ser195 of HLE, and is facilitated by the strongly electron withdrawing trifluoromethyl functionality. Deletion of the amino acid at the P3-subsite region affords inactive compounds. Valine is the preferred residue at the P1-position, whereas the corresponding glycine, alanine, alpha,alpha-dimethylglycine, or phenylalanine analogues are all inactive. The compounds described herein all confer a high degree of in vitro specificity when tested against representative cysteine, aspartyl, metallo, and other serine proteases. One of the most potent in vitro inhibitors is (3RS)-N-[4-[[[(4-chlorophenyl)sulfonyl]amino]carbonyl]phenyl]oxomethyl]-L-valyl-N-(2,3-dihydro-1H-inden-2-yl)glycine N-[3-(1,1,1-trifluoro-4-methyl-2-oxopentyl)]amide (20i; BI-RA-260) (IC50 = 0.084-mu-M). Compound 20i was also tested in hamsters in an elastase-induced pulmonary hemorrhage (EPH) model. In this model, intratracheal (it.) administration of 20i, 5 min prior to HLE challenge, effectively inhibited hemorrhage in a dose-dependent manner with an ED50 of 4.8-mu-g. The inhibitor 20i, 20-mu-g administered it. 24, 48, and 72 h prior to HLE challenge, exhibits significant inhibition against hemorrhage at all time points (97%, 64% and 49%, respectively). In a 21-day chronic model of emphysema in hamsters, 200-mu-g of HLE administered it. caused an elastase-induced emphysema in the lungs which can be quantitated histologically utilizing image analysis. In this assay, 20i significantly inhibited pulmonary lesions associated with septal destruction and increased alveolar spaces, when dosed at 20-mu-g it. 5 min prior to challenge with HLE.