3-ethoxy-4-iodo-5-methyl-1H-pyrazole | 1338378-32-7

• 分子结构分类: 有机化合物 - 有机卤素化合物
• 英文名称: 3-ethoxy-4-iodo-5-methyl-1H-pyrazole
• CAS: 1338378-32-7
• 化学式: C₆H₉IN₂O
• 分子量: 252.055
• InChiKey: BPVOQZGUHQNIQG-UHFFFAOYSA-N

物化性质

• 熔点：
  104-105 °C
• 沸点：
  344.0±42.0 °C(Predicted)
• 密度：
  1.802±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  10
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  37.9
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3-ethoxy-4-iodo-5-methyl-1H-pyrazole 在 正丁基锂 、 caesium carbonate 作用下， 以 四氢呋喃 、 环己烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 1.17h， 生成 2-(3-ethoxy-5-methyl-4-(phenylthio)-1H-pyrazol-1-yl)-5-ethylpyrimidine
  参考文献：
  名称：

  Original 2-(3-Alkoxy-1H-pyrazol-1-yl)pyrimidine Derivatives as Inhibitors of Human Dihydroorotate Dehydrogenase (DHODH)

  摘要：

  From a research program aimed at the design of new chemical entities followed by extensive screening on various models of infectious diseases, an original series of 2-(3-alkoxy-1H-pyrazol-1-yl)pyrimidines endowed with notable antiviral properties were found. Using a whole cell measles virus replication assay, we describe here some aspects of the iterative process that, from 2-(4-benzyl-3-ethoxy-5-methyl-1H-pyrazol-1-yl)pyrimidine, led to 2-(4-(2,6-difluorophenoxy)-3-isopropoxy-5-methyl-1H-pyrazol-1-yl)-5-ethylpyrimidine and a 4000-fold improvement of antiviral activity with a subnanomolar level of inhibition. Moreover, recent precedents in the literature describing antiviral derivatives acting at the level of the de novo pyrimidine biosynthetic pathway led us to determine that the mode of action of this series is based on the inhibition of the cellular dihydroorotate dehydrogenase (DHODH), the fourth enzyme of this pathway. Biochemical studies with recombinant human DHODH led us to measure IC50 as low as 13 nM for the best example of this original series when using 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone (coenzyme Q(1)) as a surrogate for coenzyme Q(10), the cofactor of this enzyme.

  DOI：

  10.1021/jm501446r
• 作为产物：
  描述：

  3-乙氧基-5-甲基-1H-吡唑 在 碘 、 potassium carbonate 、 sodium iodide 作用下， 以 乙醇 、 水 为溶剂， 反应 1.0h， 以90%的产率得到3-ethoxy-4-iodo-5-methyl-1H-pyrazole
  参考文献：
  名称：

  简单制备4和5碘代吡唑作为有用的结构单元

  摘要：

  吡唑核最近已成为作物科学和肿瘤学研究领域的复发支架。我们在这里报告了一系列4-和5-碘代吡唑衍生物的制备，例如4-碘-3-三氟甲基吡唑或乙基5-碘-4-羧基-3-三氟甲基吡唑。这项工作为人们提供了许多新的吡唑衍生物的途径，包括16种碘化结构单元中的11种，从而为具有吡唑核的新化学实体提供了途径。

  DOI：

  10.1016/j.tet.2011.09.029

文献信息

• DMF-Catalyzed Direct and Regioselective C-H Functionalization: Electrophilic/Nucleophilic 4-Halogenation of 3-Oxypyr­azoles
  作者：Yuanyuan Liu、Guangke He、Kai Chen、Yin Jin、Yufeng Li、Hongjun Zhu

  DOI：10.1002/ejoc.201100571

  日期：2011.9

  A novel, straightforward, and highly regioselective 4-chlorination of 3-oxypyrazole derivatives in boiling thionyl chloride (SOCl2) in the presence of catalytic N,N-dimethylformamide (DMF) has been developed. This reaction likely proceeds through a DMF-catalyzed electrophilic/nucleophilic chlorination mechanism and involves electrophilic attack by SOCl2 and nucleophilic substitution by Cl– as the key

  在催化 N,N-二甲基甲酰胺 (DMF) 存在下，在沸腾的亚硫酰氯 (SOCl2) 中开发了一种新颖、直接且高度区域选择性的 3-羟基吡唑衍生物 4-氯化。该反应可能通过 DMF 催化的亲电/亲核氯化机制进行，并涉及 SOCl2 的亲电攻击和 Cl- 的亲核取代作为关键步骤。基于这种机理，通过分别向反应体系中加入 Br- 和 I-， 3-羟基吡唑类的相应 4-溴化和 4-碘化也得到了很好的收率。这种卤化方法可以快速访问许多原始的 4-halo-3-oxypyrazole 系列。
• Pyrazole derivatives as dihydroorotate dehydrogenase (DHODH) inhibitors
  申请人：INSTITUT PASTEUR

  公开号：EP2929883A1

  公开（公告）日：2015-10-14

  The present invention relates to compounds of formula (I) for their use in the treatment and/or prevention of auto-immune or auto-immune related diseases, cancer, viral infections, and central nervous system diseases and disorders, by inhibiting human dehydroorate dehydrogenase (DHODH): Wherein R1, R2, R3, R4 and Ar are as defined in claim 1.

  本发明涉及式（I）化合物，通过抑制人脱氢脱氢酶（DHODH），用于治疗和/或预防自身免疫或自身免疫相关疾病、癌症、病毒感染以及中枢神经系统疾病和失调： 其中 R1、R2、R3、R4 和 Ar 如权利要求 1 所定义。
• WO2015/155680
  申请人：——

  公开号：——

  公开（公告）日：——
• Mild regioselective iodination of pyrazoles using n-butyltriphenylphosphonium peroxodisulfate
  作者：M. Gorjizadeh、M. Afshari、M. Naseh

  DOI：10.1134/s1070363216080259

  日期：2016.8

  A practical, efficient and inexpensive method of synthesis of iodopyrazoles by the reaction of pyrazoles with iodine using n-butyltriphenylphosphonium peroxodisulfate as an oxidant at room temperature is reported. The use of n-butyltriphenylphosphonium peroxodisulfate is feasible due to its easy preparation and handling, high stability and activity.
• Original 2-(3-Alkoxy-1<i>H</i>-pyrazol-1-yl)azines Inhibitors of Human Dihydroorotate Dehydrogenase (DHODH)
  作者：Marianne Lucas-Hourani、Hélène Munier-Lehmann、Farah El Mazouni、Nicholas A. Malmquist、Jane Harpon、Eloi P. Coutant、Sandrine Guillou、Olivier Helynck、Anne Noel、Artur Scherf、Margaret A. Phillips、Frédéric Tangy、Pierre-Olivier Vidalain、Yves L. Janin

  DOI：10.1021/acs.jmedchem.5b00606

  日期：2015.7.23

  Following our discovery of human dihydroorotate dehydrogenase (DHODH) inhibition by 2-(3-alkoxy-1H-pyrazol-1-yl)pyrimidine derivatives as well as 2-(4-benzyl-3-ethoxy-5-methyl-1H-pyrazol-1-yl)-5-methylpyridine, we describe here the syntheses and evaluation of an array of azine-bearing analogues. As in out previous report, the structure activity study of this series of human DHODH inhibitors was based on a phenotypic assay measuring measles virus replication. Among other inhibitors, this round of syntheses and biological evaluation iteration led to the highly active 5-cyclopropyl-2-(4-(2,6-difluorophenoxy)-3-isopropoxy-5-methyl-1H-pyrazol-1-yl)-3-fluoropyridine. Inhibition of DHODH by this compound was confirmed in an array of in vitro assays, including enzymatic tests and cell-based assays for viral replication and cellular growth. This molecule was found to be more active than the known inhibitors of DHODH, brequinar and teriflunomide, thus opening perspectives for its Use as a tool or for the design of an original series of immunosuppressive agent. Moreover, because other Series of inhibitors of human DHODH have been found to also affect Plasmodium falciparum DHODH, all the compounds were assayed for their effect on P. falciparum growth. However, the modest in vitro inhibition solely observed for two compounds did not correlate with their inhibition of P. falciparum DHODH.