2-(5-chlorothiophen-2-yl)-7,7-dimethyl-7,8-dihydro-6H-quinolin-5-one | 1276536-39-0

• 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: 2-(5-chlorothiophen-2-yl)-7,7-dimethyl-7,8-dihydro-6H-quinolin-5-one
• 英文别名: 2-(5-Chloro-2-thienyl)-7,7-dimethyl-6,8-dihydroquinolin-5-one；2-(5-chlorothiophen-2-yl)-7,7-dimethyl-6,8-dihydroquinolin-5-one
• CAS: 1276536-39-0
• 化学式: C₁₅H₁₄ClNOS
• 分子量: 291.801
• InChiKey: ZZIZEBKQNDBMKA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  19
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  58.2
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-(5-chlorothiophen-2-yl)-7,7-dimethyl-7,8-dihydro-6H-quinolin-5-one 、 氨基硫脲 在 硫酸 作用下， 以 甲醇 为溶剂， 以82%的产率得到(E)-2-(2-(5-chlorothiophen-2-yl)-7,7-dimethyl-7,8-dihydroquinolin-5(6H)-ylidene)hy drazinecarbothioamide
  参考文献：
  名称：

  Synthesis, in vitro, and in vivo (Zebra fish) antitubercular activity of 7,8-dihydroquinolin-5(6H)-ylidenehydrazinecarbothioamides

  摘要：

  We, herein, describe the synthesis of a series of novel aryl tethered 7,8-dihydroquinolin-5(6H)-ylidenehydrazinecarbothioamides 4a-v, which showed in vitro and in vivo antimycobacterial activity against Mycobacterium tuberculosis (Mtb) H37Rv. The intermediates dihydro-6H-quinolin-5-ones 3a-v were synthesized from beta-enaminones, reacting with cyclochexane-1,3-dione/5,5-dimethylcyclohexane-1,3-dione and ammonium acetate using a modified Bohlmann-Rahtz reaction conditions. They were further reacted with thiosemicarbazide to give the respective hydrazine carbothioamides 4a-v. All the new analogues 4a-v, were characterized by their NMR and mass spectral data analysis. Among the twenty-two compounds screened for in vitro antimycobacterial activity against Mycobacterium tuberculosis H37Rv (ATCC27294), two compounds, 4e and 4j, exhibited the highest inhibition with an MIC of 0.39 mu g/mL. Compounds 4a, 4g, and 4k were found to inhibit Mtb at an MIC of 0.78 mu g/mL. Hydrazinecarbothioamides 4a-k, exhibited enhanced activity than dihydroquinolinones 3a-k. The observed increase in potency provides a clear evidence that hydrazinecarbothioamide is a potential pharmacophore, collectively imparting synergistic effect in enhancing antitubercular activity of the dihydroquinolinone core. The in vivo (Zebra fish) antimycobacterial screening of the in vitro active molecules led to the identification of a hit compound, 4j, with significant activity in the Mtb nutrient starvation model (2.2-fold reduction). Docking studies of 4j showed a hydrogen bond with the P156 residue of the protein.

  DOI：

  10.1016/j.bioorg.2020.103626
• 作为产物：
  描述：

  2-乙酰基-5-氯噻酚 在 cerium(III) chloride heptahydrate 、 ammonium acetate 、 sodium iodide 作用下， 以 N,N-二甲基乙酰胺 、 异丙醇 、 甲苯 为溶剂， 反应 11.0h， 生成 2-(5-chlorothiophen-2-yl)-7,7-dimethyl-7,8-dihydro-6H-quinolin-5-one
  参考文献：
  名称：

  Pd-catalyzed site selective C–H acetoxylation of aryl/heteroaryl/thiophenyl tethered dihydroquinolinones

  摘要：

  本文描述了一种高效的选择性氧化C–H活化/乙酰氧基化协议，适用于一系列连接有2-芳基/杂芳基/噻吩基的二氢喹啉酮，使用醋酸钯作为催化剂，碘苯二乙酸作为氧化剂。所有这些反应在立体障碍较小且电子性质良好的C–H键上进行良好，生成相应的邻位乙酰氧基化衍生物，收率良好。此外，嵌入噻吩基的二氢喹啉酮的乙酰氧基化反应导致产生单一的区域异构体，乙酰氧基在噻吩基部分的C-2位上。然而，当噻吩单元的C-2位被阻塞时，乙酰氧基则会独占性地安装在C-4位上。此外，我们注意到，二氢喹啉-5(6H)-酮-肟的乙酰氧基化并未改变配体的优先性，仍然生成邻位乙酰氧基化产物。

  DOI：

  10.1039/c3ra41312h

文献信息

• Facile Diversity-Oriented Synthesis and Antitubercular Evaluation of Novel Aryl and Heteroaryl Tethered Pyridines and Dihydro-6<i>H</i>-quinolin-5-ones Derived via Variants of the Bohlmann–Rahtz Reaction
  作者：Srinivas Kantevari、Santhosh Reddy Patpi、Dinesh Addla、Siddamal Reddy Putapatri、Balasubramanian Sridhar、Perumal Yogeeswari、Dharmarajan Sriram

  DOI：10.1021/co2000604

  日期：2011.7.11

  nes tethered with aryls and heteroaryls was achieved in very good yields through CeCl3·7H2O-NaI catalyst via variants of the Bohlmann–Rahtz reaction. β-Enaminones derived from various aryl and heteroaryl methyl ketones were regioselectively reacted with ethyl acetoacetate or 5,5-dimethylcyclohexane-1,3-dione or 4,4-dimethylcyclohexane-1,3-dione and ammonium acetate refluxing in 2-propanol. Applicability

  通过CeCl 3 ·7H 2可以很好的收率实现取代的吡啶和与芳基和杂芳基连接的二氢-6 H-喹啉-5-酮的多样性合成通过Bohlmann–Rahtz反应的变体生成O-NaI催化剂。使衍生自各种芳基和杂芳基甲基酮的β-烯酮与乙酰乙酸乙酯或5,5-二甲基环己烷-1,3-二酮或4,4-二甲基环己烷-1,3-二酮和乙酸铵在2-丙醇中回流进行区域选择性反应。无毒铈催化剂的适用性，与宽范围的芳基和杂芳基β-烯胺酮具有高反应活性，从而导致各种类似物，操作简便以及在相对较低的温度下较短的反应时间是已开发方案的突出特点。已评估了这些合成的取代吡啶和二氢-6 H-喹啉-5-酮类似物对结核分枝杆菌的体外抗分枝杆菌活性通过琼脂稀释法获得H37Rv（MTB）。在筛选出的48种化合物中，有6种化合物2-（5-氯噻吩-2-基）-7,7-二甲基-7,8-二氢-6 H-喹啉-5-一4 13,2 }，2-（ 5-溴噻吩-2-基-7
• Synthesis and antitubercular evaluation of novel substituted aryl and thiophenyl tethered dihydro-6H-quinolin-5-ones
  作者：Srinivas Kantevari、Santhosh Reddy Patpi、Balasubramanian Sridhar、Perumal Yogeeswari、Dharmarajan Sriram

  DOI：10.1016/j.bmcl.2010.12.082

  日期：2011.2

  A series of novel aryl and thiophenyl tethered dihydro-6H-quinolin-5-ones have been synthesized in very good yields through CeCl3 center dot 7H(2)O-NaI catalyzed one-pot condensation of beta-enaminones derived from the respective methyl ketones; 1,3-cyclohexanedione & 5,5-dimethyl-1,3-cyclohexanedione and ammonium acetate refluxing in 2-propanol. Dihydro-6H-quinolin-5-ones 3a-f was further derivatized to the respective hydroxymethyl analogs using proline as an organocatalyst in aqueous media. Among the all 18 compounds screened for in vitro antimycobacterial activity against Mycobacterium tuberculosis H(37)Rv (MTB), dihydro-6H-quinolin-5-ones 4e and 4f were found to be most active with MIC 3.13 mu g/mL. (C) 2010 Elsevier Ltd. All rights reserved.