4-[(3-hydroxyphenyl)amino]-6,7-dimethoxy-1-quinazolinium chloride

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氮杂萘
• 英文名称: 4-[(3-hydroxyphenyl)amino]-6,7-dimethoxy-1-quinazolinium chloride
• 英文别名: WHI-P180 hydrochloride；3-(6,7-dimethoxyquinazolin-4-ylamino)phenol hydrochloride；3-[(6,7-dimethoxyquinazolin-4-yl)amino]phenol;hydrochloride
• 化学式: C₁₆H₁₅N₃O₃*ClH
• 分子量: 333.774
• InChiKey: MJLLZROGIFJFJJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.52
• 重原子数：
  23
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  76.5
• 氢给体数：
  3
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  2-氨基-4,5-二甲氧基苯甲酸 在 氯化亚砜 、 N,N-二甲基甲酰胺 作用下， 以 甲乙醚 、 异丙醇 为溶剂， 反应 7.0h， 生成 4-[(3-hydroxyphenyl)amino]-6,7-dimethoxy-1-quinazolinium chloride
  参考文献：
  名称：

  Virtual screening and synthesis of quinazolines as novel JAK2 inhibitors

  摘要：

  JAK2 is an important target in multiple processes associated with tumor growth. In this study, virtual screening was employed for hit compound identification with chemical libraries using SurflexDock. Subsequently, hit optimization for potent and selective candidate JAK2 inhibitors was performed through synthesis of diverse C-1 substituted quinazoline derivatives. A novel compound 5p, (6,7-dimethoxyquinazolin-4-yl)naphthalen-1-ylamine, was thus obtained. JAK2 inhibitory activity of 5p was 43% at 20 mu M and this was comparable to AG490, a representative JAK2 inhibitor. Moreover, 5p showed a positive correlation between JAK2 inhibition and cytotoxicity; 5p treatment in HT-29 cells strongly inhibited JAK2 activation and subsequent STAT3 phosphorylation, reduced anti-apoptotic protein levels, and finally induced apoptosis. This suggests that compound 5p is a candidate inhibitor of JAK2 and its downstream STAT3 signaling pathway for antitumor therapy. In the docking model, the quinazoline template of 5k, the lead compound, occupied a hydrophobic region such as Leu856, Leu855, Ala880, Leu932 and Gly935, and the highly conserved hydrogen bond was created by 6-OMe of the ring template, which binds to the NH of Arg980. Moreover, hydrophobic interactions were identified between morpholine moiety and the hydrophobic region formed by Leu855, Ala880, Tyr931, Val911 and Met929. Also, compound 5k more strongly inhibited JAK2 phosphorylation in mouse embryonic stem cells than AG490. Our study shows the successful application of virtual screening for lead discovery and we propose that the novel compound 5p can be an effective JAK2 inhibitor candidate for further antitumor agent research. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2010.11.057

文献信息

• Design and Structure−Activity Relationship of a New Class of Potent VEGF Receptor Tyrosine Kinase Inhibitors
  作者：Laurent F. Hennequin、Andrew P. Thomas、Craig Johnstone、Elaine S. E. Stokes、Patrick A. Plé、Jean-Jacques M. Lohmann、Donald J. Ogilvie、Mike Dukes、Steve R. Wedge、Jon O. Curwen、Jane Kendrew、Christine Lambert-van der Brempt

  DOI：10.1021/jm990345w

  日期：1999.12.1

  produced the most potent inhibitors of Flt and KDR tyrosine kinases activity with IC(50) values in the nanomolar range (e.g. 10, 12, 13, 16, and 18). Investigation of the quinazoline C-6 and C-7 positions indicates that a large range of substituents are tolerated at C-7, whereas variation at the C-6 is more restricted. At C-7, neutral, basic, and heteroaromatic side chains led to very potent compounds, as

  合成了一系列取代的4-苯胺基喹唑啉和相关化合物，作为血管内皮生长因子（VEGF）受体（Flt和KDR）酪氨酸激酶活性的潜在抑制剂。酶筛查表明，对于双环系统而言，存在窄的构效关系（SAR），喹唑啉，喹啉和cinnolines具有活性，通常优选喹唑啉和喹啉。对苯胺的取代进行了研究，并清楚地表明，在C-4'位置优选使用较小的亲脂性取代基，例如卤素或甲基。在C-2'位置优选小的取代基，例如氢和氟。在苯胺的间位引入羟基会产生最有效的Flt和KDR酪氨酸激酶活性抑制剂，其IC（50）值在纳摩尔范围内（例如10、12、13、16和18）。对喹唑啉C-6和C-7位置的研究表明，在C-7可以容忍大范围的取代基，而C-6的变化受到更大的限制。在C-7处，中性，碱性和杂芳族侧链产生非常有效的化合物，如甲氧基乙氧基衍生物13（IC（50）<2 nM）所示。与与FGF受体相关的抑制剂（50至3800倍）相比，我们的