ethyl 1-[(2S,3S)-2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]-4-phenylbutyl]pyrazole-4-carboxylate | 1470073-14-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: ethyl 1-[(2S,3S)-2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]-4-phenylbutyl]pyrazole-4-carboxylate
• CAS: 1470073-14-3
• 化学式: C₂₁H₂₉N₃O₅
• 分子量: 403.478
• InChiKey: SDIXSTULAXKPMM-ROUUACIJSA-N

物化性质

• 沸点：
  583.6±50.0 °C(predicted)
• 密度：
  1.18±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  29
• 可旋转键数：
  11
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.48
• 拓扑面积：
  103
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  ethyl 1-[(2S,3S)-2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]-4-phenylbutyl]pyrazole-4-carboxylate 在 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 N,N-二异丙基乙胺 、 三氟乙酸 、 sodium hydroxide 作用下， 以 四氢呋喃 、 乙醇 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 5.0h， 生成 1-[(2S,3S)-3-[[3-[[(1R)-1-(4-fluorophenyl)ethyl]carbamoyl]-5-[methyl(methylsulfonyl)amino]benzoyl]amino]-2-hydroxy-4-phenylbutyl]pyrazole-4-carboxylic acid
  参考文献：
  名称：

  Discovery of pyrazole as C-terminus of selective BACE1 inhibitors

  摘要：

  We recently discovered and reported dual inhibitor 5 of AChE and BACE1 with N-benzylpiperidine ethyl as C-terminus. Compound 5 showed potent inhibitory activities for BACE1, and could reduce endogenous A beta(1-40) production in APP transgenic mice. In present work, we rapidly identified substituted triazole as the C-terminus of compound 5 by replacing the benzylpiperidine ethyl group with click chemistry and tested these synthesized compounds by in situ screening assay. As revealed by the crystal structures of BACE1 in complex with our triazole compound 12, we found that Pro70 and Thr72 located in the flap region were the critical components for binding with these inhibitors. With the aid of the crystal structure, a new series of five-membered heterocyclic compounds was prepared in order to explore the structure activity relationship (SAR) of this class of molecules. From these efforts, pyrazole was discovered as a novel C-terminus of BACE1 inhibitors. After further modification of pyrazole with variable substituents, compound 37 exhibited good potency in enzyme inhibition assay (IC50 = 0.025 mu M) and compound 33 showed moderate inhibition effects on A beta production of APP transfected HEK293 cells. Moreover, these pyrazole derivatives demonstrated good selectivity versus cathepsin D. Our results indicated that the vicinity of Pro70 and Thr72 might be utilized as a subsite, and the discovered pyrazole derivatives might provide useful hints for developing novel BACE1 inhibitors as anti-AD drugs. (C) 2013 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2013.06.027
• 作为产物：
  描述：

  4-吡唑甲酸乙酯 、 (1S)-1-(2R)-环氧乙基-2-苯乙基氨基甲酸叔丁酯 在 potassium carbonate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 1.0h， 生成 ethyl 1-[(2S,3S)-2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]-4-phenylbutyl]pyrazole-4-carboxylate
  参考文献：
  名称：

  Discovery of pyrazole as C-terminus of selective BACE1 inhibitors

  摘要：

  We recently discovered and reported dual inhibitor 5 of AChE and BACE1 with N-benzylpiperidine ethyl as C-terminus. Compound 5 showed potent inhibitory activities for BACE1, and could reduce endogenous A beta(1-40) production in APP transgenic mice. In present work, we rapidly identified substituted triazole as the C-terminus of compound 5 by replacing the benzylpiperidine ethyl group with click chemistry and tested these synthesized compounds by in situ screening assay. As revealed by the crystal structures of BACE1 in complex with our triazole compound 12, we found that Pro70 and Thr72 located in the flap region were the critical components for binding with these inhibitors. With the aid of the crystal structure, a new series of five-membered heterocyclic compounds was prepared in order to explore the structure activity relationship (SAR) of this class of molecules. From these efforts, pyrazole was discovered as a novel C-terminus of BACE1 inhibitors. After further modification of pyrazole with variable substituents, compound 37 exhibited good potency in enzyme inhibition assay (IC50 = 0.025 mu M) and compound 33 showed moderate inhibition effects on A beta production of APP transfected HEK293 cells. Moreover, these pyrazole derivatives demonstrated good selectivity versus cathepsin D. Our results indicated that the vicinity of Pro70 and Thr72 might be utilized as a subsite, and the discovered pyrazole derivatives might provide useful hints for developing novel BACE1 inhibitors as anti-AD drugs. (C) 2013 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2013.06.027