4-Oxo-6-p-tolyl-4H-pyran-2-carboxylic acid ethyl ester | 76781-76-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: 4-Oxo-6-p-tolyl-4H-pyran-2-carboxylic acid ethyl ester
• 英文别名: Ethyl 6-(4-methylphenyl)-4-oxopyran-2-carboxylate
• CAS: 76781-76-5
• 化学式: C₁₅H₁₄O₄
• 分子量: 258.274
• InChiKey: JUCNHOXUQMGKCU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  19
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  4-Oxo-6-p-tolyl-4H-pyran-2-carboxylic acid ethyl ester 在 盐酸 、 氯化亚砜 、 氨 、 三乙胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 43.0h， 生成 4-chloro-6-(4-methylphenyl)-N-(2H-tetrazol-5-yl)pyridine-2-carboxamide
  参考文献：
  名称：

  Antiallergic agents. 2. N-(1H-Tetrazol-5-yl)-6-phenyl-2-pyridinecarboxamides

  摘要：

  A new series of N-(1H-tetrazol-5-yl)-6-phenyl-2-pyridinecarboxamides was prepared to determine the effects of substituents on the benzene and pyridine rings on antiallergic activity in the rat passive cutaneous anaphylaxis (PCA) assay after oral administration. One member of this series, N-(1H-tetrazol-5-yl)-4-methyl-6-[4-(methylamino)-phenyl]-2- pyridinecarboxamide (231), has an ED50 value of 0.8 mg/kg po and is 85 times more potent than disodium cromoglycate (DSCG) on intravenous administration. Further evaluation of 231 as a clinically useful antiallergic agent is in progress.

  DOI：

  10.1021/jm00364a026

文献信息

• Studies on antiallergic agents. I. Phenyl-substituted heterocycles with a 5-tetrazolyl or N-(5-tetrazolyl)carbamoyl group.
  作者：YASUSHI HONMA、YASUO SEKINE、TOMIKI HASHIYAMA、MIKIO TAKEDA、YASUTOSHI ONO、KEI TSUZURAHARA

  DOI：10.1248/cpb.30.4314

  日期：——

  A series of phenyl-substituted pyrones, pyridines, and pyrimidines bearing a 5-tetrazolyl or N-(5-tetrazolyl) carbamoyl group as an acidic moiety was synthesized. The compounds were tested for antiallergic activity by passive cutaneous anaphylaxis (PCA) assay in rats after oral administration. Among the compounds synthesized. N-(5-tetrazolyl)-6-phenylpyridine-2-carboxamides (53, 54 and 55) were found to display remarkably high potency.

  合成了一系列以 5-四唑基或 N-(5-四唑基)氨基甲酰基为酸性分子的苯基取代的吡喃、吡啶和嘧啶。这些化合物在大鼠口服后通过被动皮肤过敏试验（PCA）测试其抗过敏活性。合成的化合物包括发现 N-（5-四唑基）-6-苯基吡啶-2-甲酰胺（53、54 和 55）具有显著的高效力。
• HONMA, YASUSHI;SEKINE, YASUO;HASHIYAMA, TOMIKI;TAKEDA, MIKIO;ONO, YASUTOS+, CHEM. AND PHARM. BULL., 1982, 30, N 12, 4314-4324
  作者：HONMA, YASUSHI、SEKINE, YASUO、HASHIYAMA, TOMIKI、TAKEDA, MIKIO、ONO, YASUTOS+

  DOI：——

  日期：——
• Antiallergic agents. 2. N-(1H-Tetrazol-5-yl)-6-phenyl-2-pyridinecarboxamides
  作者：Yasushi Honma、Kuniyuki Oda、Tomiki Hashiyama、Kyoji Hanamoto、Hideo Nakai、Hirozumi Inoue、Akihiko Ishida、Mikio Takeda、Yasutoshi Ono、Kei Tsuzurahara

  DOI：10.1021/jm00364a026

  日期：1983.10

  A new series of N-(1H-tetrazol-5-yl)-6-phenyl-2-pyridinecarboxamides was prepared to determine the effects of substituents on the benzene and pyridine rings on antiallergic activity in the rat passive cutaneous anaphylaxis (PCA) assay after oral administration. One member of this series, N-(1H-tetrazol-5-yl)-4-methyl-6-[4-(methylamino)-phenyl]-2- pyridinecarboxamide (231), has an ED50 value of 0.8 mg/kg po and is 85 times more potent than disodium cromoglycate (DSCG) on intravenous administration. Further evaluation of 231 as a clinically useful antiallergic agent is in progress.