ethyl 6,8-difluoro-7-(2,4-dimethyl-4-pyridinyl)-4-oxo-4H-benzothiopyran-3-carboxylate | 151447-03-9

• 分子结构分类: 有机化合物 - 有机杂环化合物
• 英文名称: ethyl 6,8-difluoro-7-(2,4-dimethyl-4-pyridinyl)-4-oxo-4H-benzothiopyran-3-carboxylate
• 英文别名: ethyl 7-(2,6-dimethylpyridin-4-yl)-6,8-difluoro-4-oxothiochromene-3-carboxylate
• CAS: 151447-03-9
• 化学式: C₁₉H₁₅F₂NO₃S
• 分子量: 375.396
• InChiKey: CARUSXINDXUMFK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  26
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  81.6
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  ethyl 6,8-difluoro-7-(2,4-dimethyl-4-pyridinyl)-4-oxo-4H-benzothiopyran-3-carboxylate 在 盐酸 、 溶剂黄146 作用下， 反应 4.0h， 以95%的产率得到6,8-difluoro-7-(2,4-dimethyl-4-pyridinyl)-4-oxo-4H-benzothiopyran-3-carboxylic acid hydrochloride
  参考文献：
  名称：

  Mammalian topoisomerase II inhibitory activity of 1-cyclopropyl-6,8-difluoro-1,4-dihydro-7-(2,6-dimethyl-4-pyridinyl)-4-oxo-3-quinolinecarboxylic acid and related derivatives

  摘要：

  1-Cyclopropyl-6,8-difluoro-1,4-dihydro-7-(2,6-dimethyl-4-pyridinyl)-4-oxo-3-quinolinecarboxylic acid (1), a previously reported potent inhibitor of bacterial DNA gyrase, was found to be interactive with mammalian topoisomerase II (topo II). In a DNA-cleavage assay using topo II isolated from HeLa cells, 1 exhibited an EC50 value of 7.6 muM (VP-16; EC50 = 0.81 muM). A series of analogues modified at the 1-, 2-, 3-, 5-, and 7-positions of 1 were subsequently made and assessed for topo II inhibition. Compound 1 was considerably more potent than derivatives where the 1-substituent was alkyl, aryl, or H, or when N-c-C3H5 was replaced with S. The descarboxyl (i.e., 3-H) analogue had potency comparable to that of 1; when both these compounds were substituted at the 2-position with methyl or phenyl, an interesting relationship between activity and the conformation of the carboxyl group emerged. Upon replacement of the 5-H of 1 with NH2 or F, sustained potency was seen. No enhancement of activity was evident upon replacing the 7-substituent of 1 with other pyridinyl groups, 4-methyl-1-piperazinyl, or pyrrolidinyl groups; however, the 7-(4-hydroxyphenyl) analogue (CP-115,953) was 6-fold more potent than 1. The topo II inhibitory properties of 1 translated to modest in vitro cytotoxicity and in vivo activity versus P388.

  DOI：

  10.1021/jm00071a010
• 作为产物：
  描述：

  4-(tributylstannyl)-2,6-dimethylpyridine 在 bis-triphenylphosphine-palladium(II) chloride 、 硫化氢 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 乙醇 为溶剂， 反应 18.0h， 生成 ethyl 6,8-difluoro-7-(2,4-dimethyl-4-pyridinyl)-4-oxo-4H-benzothiopyran-3-carboxylate
  参考文献：
  名称：

  Mammalian topoisomerase II inhibitory activity of 1-cyclopropyl-6,8-difluoro-1,4-dihydro-7-(2,6-dimethyl-4-pyridinyl)-4-oxo-3-quinolinecarboxylic acid and related derivatives

  摘要：

  1-Cyclopropyl-6,8-difluoro-1,4-dihydro-7-(2,6-dimethyl-4-pyridinyl)-4-oxo-3-quinolinecarboxylic acid (1), a previously reported potent inhibitor of bacterial DNA gyrase, was found to be interactive with mammalian topoisomerase II (topo II). In a DNA-cleavage assay using topo II isolated from HeLa cells, 1 exhibited an EC50 value of 7.6 muM (VP-16; EC50 = 0.81 muM). A series of analogues modified at the 1-, 2-, 3-, 5-, and 7-positions of 1 were subsequently made and assessed for topo II inhibition. Compound 1 was considerably more potent than derivatives where the 1-substituent was alkyl, aryl, or H, or when N-c-C3H5 was replaced with S. The descarboxyl (i.e., 3-H) analogue had potency comparable to that of 1; when both these compounds were substituted at the 2-position with methyl or phenyl, an interesting relationship between activity and the conformation of the carboxyl group emerged. Upon replacement of the 5-H of 1 with NH2 or F, sustained potency was seen. No enhancement of activity was evident upon replacing the 7-substituent of 1 with other pyridinyl groups, 4-methyl-1-piperazinyl, or pyrrolidinyl groups; however, the 7-(4-hydroxyphenyl) analogue (CP-115,953) was 6-fold more potent than 1. The topo II inhibitory properties of 1 translated to modest in vitro cytotoxicity and in vivo activity versus P388.

  DOI：

  10.1021/jm00071a010