2-ethoxycarbonyl-5-(2,5-dichlorphenyl)-1,3,4-oxadiazol | 68496-90-2

• 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: 2-ethoxycarbonyl-5-(2,5-dichlorphenyl)-1,3,4-oxadiazol
• 英文别名: 5-(2,5-dichloro-phenyl)-[1,3,4]oxadiazole-2-carboxylic acid ethyl ester；Ethyl 5-(2,5-dichlorophenyl)-1,3,4-oxadiazole-2-carboxylate；ethyl 5-(2,5-dichlorophenyl)-1,3,4-oxadiazole-2-carboxylate
• CAS: 68496-90-2
• 化学式: C₁₁H₈Cl₂N₂O₃
• mdl: MFCD25565856
• 分子量: 287.102
• InChiKey: LOMLYXOGFJFUSD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.181
• 拓扑面积：
  65.2
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  2-ethoxycarbonyl-5-(2,5-dichlorphenyl)-1,3,4-oxadiazol 在 水 、 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 sodium hydroxide 作用下， 以 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 2.0h， 生成 5-(2,5-dichlorophenyl)-N-(2,6-dimethylphenyl)-1,3,4-oxadiazole-2-carboxamide
  参考文献：
  名称：

  SAR analysis of innovative selective small molecule antagonists of sphingosine-1-phosphate 4 (S1P4) receptor

  摘要：

  Recent evidence suggests an innovative application of chemical modulators targeting the S1P(4) receptor as novel mechanism-based drugs for the treatment of influenza virus infection. Modulation of the S1P(4) receptor may also represent an alternative therapeutic approach for clinical conditions where reactive thrombocytosis is an undesired effect or increased megakaryopoiesis is required. With the exception of our recent research program disclosure, we are not aware of any selective S1P(4) antagonists reported in the literature to date. Herein, we describe complementary structure-activity relationships (SAR) of the high-throughput screening (HTS)-derived hit 5-(2,5-dichlorophenyl)-N-(2,6-dimethylphenyl)furan-2-carboxamide and its 2,5-dimethylphenyl analog. Systematic structural modifications of the furan ring showed that both steric and electronic factors in this region have a significant impact on the potency. The furan moiety was successfully replaced with a thiophene or phenyl ring maintaining potency in the low nanomolar range and high selectivity against the other S1P receptor subtypes. By expanding the molecular diversity within the hit-derived class, our SAR study provides innovative small molecule potent and selective S1P(4) antagonists suitable for in vivo pharmacological validation of the target receptor. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2011.06.132
• 作为产物：
  描述：

  2,5-二氯苯酰肼 在 伯吉斯试剂 、 三乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 11.0h， 生成 2-ethoxycarbonyl-5-(2,5-dichlorphenyl)-1,3,4-oxadiazol
  参考文献：
  名称：

  SAR analysis of innovative selective small molecule antagonists of sphingosine-1-phosphate 4 (S1P4) receptor

  摘要：

  Recent evidence suggests an innovative application of chemical modulators targeting the S1P(4) receptor as novel mechanism-based drugs for the treatment of influenza virus infection. Modulation of the S1P(4) receptor may also represent an alternative therapeutic approach for clinical conditions where reactive thrombocytosis is an undesired effect or increased megakaryopoiesis is required. With the exception of our recent research program disclosure, we are not aware of any selective S1P(4) antagonists reported in the literature to date. Herein, we describe complementary structure-activity relationships (SAR) of the high-throughput screening (HTS)-derived hit 5-(2,5-dichlorophenyl)-N-(2,6-dimethylphenyl)furan-2-carboxamide and its 2,5-dimethylphenyl analog. Systematic structural modifications of the furan ring showed that both steric and electronic factors in this region have a significant impact on the potency. The furan moiety was successfully replaced with a thiophene or phenyl ring maintaining potency in the low nanomolar range and high selectivity against the other S1P receptor subtypes. By expanding the molecular diversity within the hit-derived class, our SAR study provides innovative small molecule potent and selective S1P(4) antagonists suitable for in vivo pharmacological validation of the target receptor. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2011.06.132

文献信息

• Photoredox Catalysis Enables Decarboxylative Cyclization with Hypervalent Iodine(III) Reagents: Access to 2,5-Disubstituted 1,3,4-Oxadiazoles
  作者：Jian Li、Xue-Chen Lu、Yue Xu、Jin-Xia Wen、Guo-Quan Hou、Li Liu

  DOI：10.1021/acs.orglett.0c03663

  日期：2020.12.18

  A novel approach to 2,5-disubstituted 1,3,4-oxadiazoles derivatives via a decarboxylative cyclization reaction by photoredox catalysis between commercially available α-oxocarboxylic acids and hypervalent iodine(III) reagent is described. This powerful transformation involves the coupling reaction between two different kinds of radical species and the formation of C–N and C–O bonds.

  描述了一种新颖的方法，该方法通过可商购的α-氧代羧酸和高价碘（III）试剂之间的光氧化还原催化脱氧环化反应来进行2,5-二取代的1,3,4-恶二唑衍生物。这种有力的转变涉及两种不同种类的自由基之间的偶联反应以及C–N和C–O键的形成。