1-methylcyclopropyl 4-(3-((3-((3,5-bis(trifluoromethyl)benzyl)(methyl)carbamoyl)-1-methyl-2-oxo-1,2-dihydroquinolin-4-yl)oxy)propyl)piperidine-1-carboxylate

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 喹啉及其衍生物
• 英文名称: 1-methylcyclopropyl 4-(3-((3-((3,5-bis(trifluoromethyl)benzyl)(methyl)carbamoyl)-1-methyl-2-oxo-1,2-dihydroquinolin-4-yl)oxy)propyl)piperidine-1-carboxylate
• 英文别名: Sms2-IN-1；(1-methylcyclopropyl) 4-[3-[3-[[3,5-bis(trifluoromethyl)phenyl]methyl-methylcarbamoyl]-1-methyl-2-oxoquinolin-4-yl]oxypropyl]piperidine-1-carboxylate
• 化学式: C₃₄H₃₇F₆N₃O₅
• 分子量: 681.675
• InChiKey: JDQOICVJUDEXEQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.2
• 重原子数：
  48
• 可旋转键数：
  10
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  79.4
• 氢给体数：
  0
• 氢受体数：
  11

反应信息

• 作为产物：
  描述：

  3,5-双三氟甲基苯基-N-甲基甲胺 在 盐酸 、 potassium carbonate 作用下， 以 乙醇 、 乙酸乙酯 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 14.0h， 生成 1-methylcyclopropyl 4-(3-((3-((3,5-bis(trifluoromethyl)benzyl)(methyl)carbamoyl)-1-methyl-2-oxo-1,2-dihydroquinolin-4-yl)oxy)propyl)piperidine-1-carboxylate
  参考文献：
  名称：

  Discovery and characterization of selective human sphingomyelin synthase 2 inhibitors

  摘要：

  Sphingomyelin synthase (SMS) is a membrane enzyme that catalyzes the synthesis of sphingomyelin, is required for the maintenance of plasma membrane microdomain fluidity, and has two isoforms: SMS1 and SMS2. Although these isoforms exhibit the same SMS activity, they are different enzymes with distinguishable subcellular localizations. It was reported that SMS2 KO mice displayed lower inflammatory responses and anti-atherosclerotic effects, suggesting that inhibition of SMS2 would be a potential therapeutic approach for controlling inflammatory responses and atherosclerosis.This study aimed to discover a novel small-molecule compound that selectively inhibits SMS2 enzymatic activity. We developed a human SMS2 enzyme assay with a high-throughput mass spectrometry-based screening system. We characterized the enzymatic properties of SMS2 and established a high throughput screening-compatible assay condition. To identify human SMS2 inhibitors, we conducted compound screening using the enzyme assay. We identified a 2-quinolone derivative as a SMS2 selective inhibitor with an IC50 of 950 nM and >100-fold selectivity for SMS2 over SMS1. The 2-quinolone exhibited efficacy in a cell-based engagement assay. We demonstrated that a more potent derivative directly bound to SMS2-expressing membrane fractions in an affinity selection mass spectrometry assay. Mutational analyses revealed that the interaction of the inhibitor with SMS2 required the presence of the amino acids 5227 and H229, which are located in the catalytic domain of SMS2.In conclusion, we discovered novel SMS2-selective inhibitors. 2-Quinolone SMS2 inhibitors are considered applicable for leading optimization studies. Further investigations using these SMS2 inhibitors would provide validation tools for SMS2-relevant pathways in vitro and in vivo. (C)2017 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2017.04.067

文献信息

• Discovery and characterization of selective human sphingomyelin synthase 2 inhibitors
  作者：Ryutaro Adachi、Kazumasa Ogawa、Shin-ichi Matsumoto、Takuya Satou、Yukiya Tanaka、Jyunichi Sakamoto、Takashi Nakahata、Rei Okamoto、Masahiro Kamaura、Tomohiro Kawamoto

  DOI：10.1016/j.ejmech.2017.04.067

  日期：2017.8

  Sphingomyelin synthase (SMS) is a membrane enzyme that catalyzes the synthesis of sphingomyelin, is required for the maintenance of plasma membrane microdomain fluidity, and has two isoforms: SMS1 and SMS2. Although these isoforms exhibit the same SMS activity, they are different enzymes with distinguishable subcellular localizations. It was reported that SMS2 KO mice displayed lower inflammatory responses and anti-atherosclerotic effects, suggesting that inhibition of SMS2 would be a potential therapeutic approach for controlling inflammatory responses and atherosclerosis.This study aimed to discover a novel small-molecule compound that selectively inhibits SMS2 enzymatic activity. We developed a human SMS2 enzyme assay with a high-throughput mass spectrometry-based screening system. We characterized the enzymatic properties of SMS2 and established a high throughput screening-compatible assay condition. To identify human SMS2 inhibitors, we conducted compound screening using the enzyme assay. We identified a 2-quinolone derivative as a SMS2 selective inhibitor with an IC50 of 950 nM and >100-fold selectivity for SMS2 over SMS1. The 2-quinolone exhibited efficacy in a cell-based engagement assay. We demonstrated that a more potent derivative directly bound to SMS2-expressing membrane fractions in an affinity selection mass spectrometry assay. Mutational analyses revealed that the interaction of the inhibitor with SMS2 required the presence of the amino acids 5227 and H229, which are located in the catalytic domain of SMS2.In conclusion, we discovered novel SMS2-selective inhibitors. 2-Quinolone SMS2 inhibitors are considered applicable for leading optimization studies. Further investigations using these SMS2 inhibitors would provide validation tools for SMS2-relevant pathways in vitro and in vivo. (C)2017 Elsevier Masson SAS. All rights reserved.