2-(5-Chlorothiophen-2-yl)-7,8-dihydroquinolin-5(6H)-one | 1276536-36-7

• 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)-7,8-dihydroquinolin-5(6H)-one
• 英文别名: 2-(5-chlorothiophen-2-yl)-7,8-dihydro-6H-quinolin-5-one
• CAS: 1276536-36-7
• 化学式: C₁₃H₁₀ClNOS
• 分子量: 263.748
• InChiKey: ZZIREKIKUDJMEC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  17
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.23
• 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)-7,8-dihydroquinolin-5(6H)-one 、 氨基硫脲 在 硫酸 作用下， 以 甲醇 为溶剂， 以86%的产率得到(E)-2-(2-(5-chlorothiophen-2-yl)-7,8-dihydroquinolin-5(6H)ylidene)hydrazinecarbo thioamide
  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)-7,8-dihydroquinolin-5(6H)-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

• 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.
• Synthesis, in vitro, and in vivo (Zebra fish) antitubercular activity of 7,8-dihydroquinolin-5(6H)-ylidenehydrazinecarbothioamides
  作者：Sandeep kumar Marvadi、Vagolu Siva Krishna、Goverdhan Surineni、Rudraraju Srilakshmi Reshma、Balasubramanian Sridhar、Dharmarajan Sriram、Srinivas Kantevari

  DOI：10.1016/j.bioorg.2020.103626

  日期：2020.3

  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.
• Pd-catalyzed site selective C–H acetoxylation of aryl/heteroaryl/thiophenyl tethered dihydroquinolinones
  作者：Santhosh Reddy Patpi、Balasubramanian Sridhar、Prabhakar Rao Tadikamalla、Srinivas Kantevari

  DOI：10.1039/c3ra41312h

  日期：——

  Described herein is an efficient protocol for the site selective oxidative C–H activation/acetoxylation of a series of 2-aryl/heteroaryl/thiophenyl tethered dihydroquinolinones using palladium acetate as the catalyst and iodobenzene diacetate as an oxidant. All these transformations progressed well at less sterically encumbered and electronically favourable C–H bonds to give corresponding ortho-acetoxylated derivatives in good yields. Further, acetoxylation of thiophenyl embedded dihydroquinolinones resulted in single regioisomers, acetoxylated at the C-2 position on the thiophenyl moiety. However, when the C-2 position on the thiophene unit was blocked, the acetoxy group was exclusively installed at the C-4 position. Further, we noticed that acetoxylation of dihydroquinolin-5(6H)-one-oxime did not alter ligand preferentiality to give the ortho-acetoxylated product.

  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。