ethyl 8,8-dimethyl-2-oxo-2,6,7,8-tetrahydropyrano[3,2-g]chromene-3-carboxylate | 263903-43-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: ethyl 8,8-dimethyl-2-oxo-2,6,7,8-tetrahydropyrano[3,2-g]chromene-3-carboxylate
• 英文别名: Ethyl 2,2-dimethyl-8-oxo-3,4-dihydropyrano[3,2-g]chromene-7-carboxylate
• CAS: 263903-43-1
• 化学式: C₁₇H₁₈O₅
• 分子量: 302.327
• InChiKey: FBNONIBCRJGUQB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  22
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.41
• 拓扑面积：
  61.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  2,4-二羟基苯甲醛 在 哌啶 、 三氟化硼乙醚 作用下， 以 1,4-二氧六环 、 乙腈 为溶剂， 反应 4.5h， 生成 ethyl 8,8-dimethyl-2-oxo-2,6,7,8-tetrahydropyrano[3,2-g]chromene-3-carboxylate
  参考文献：
  名称：

  Pancreatic α-amylase inhibition and free radical scavenging activity of substituted pyranochromenone derivatives

  摘要：

  Pyranochromenone derivatives 3a-d, 6a-j and 2H-chromenones 8a-b were synthesized and screened for their in vitro alpha-amylase inhibitory and ABTS(aEuro cent+) [2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)] free radical scavenging activities. Compounds 3a, 3c, and 6d displayed dual function of ABTS(aEuro cent+) radical scavenging as well as alpha-amylase inhibition. Compound 6h was found to be most potent alpha-amylase inhibitor in present series of compounds. Docking studies suggest that these compounds occupy active site of the human pancreatic alpha-amylase similar to that of acarbose which inhibits enzyme by hydrophobic interactions. These compounds have potential to be developed as therapeutics targeted against diet-induced hyperglycemia in diabetes.Series of pyranochromenone derivatives 3a-d, 6a-j, and 8a-b were synthesized, among these compound 6h shown potent intestinal alpha-amylase inhibitory activity. Compounds 3a, 3c, and 6d were shown dual properties such as alpha-amylase inhibitory and antioxidant activities. These derivatives may serve as a model compounds for design and development of therapeutics based agents.

  DOI：

  10.1007/s00044-013-0867-y

文献信息

• Condensation of salicylaldehydes with ethyl 4,4,4-trichloro-3-oxobutanoate: a facile approach for the synthesis of substituted 2H-chromene-3-carboxylates
  作者：Mudulkar Sairam、Gannerla Saidachary、Bhimapaka China Raju

  DOI：10.1016/j.tetlet.2015.01.114

  日期：2015.3

  A highly efficient and simple protocol has been developed for the preparation of ethyl 2-oxo-2H-chromene-3-carboxylates 3a–v by the condensation of salicylaldehydes 1a–v with ethyl 4,4,4-trichloro-3-oxobutanoate 2 for the first time. The reaction is proceeding via Knoevenagel pathway followed by a selective addition of the phenolic hydroxyl group to the carbonyl group adjacent to the CCl3 group rather

  通过将水杨醛1a - v与4,4,4-三氯-3-氧代丁酸乙酯缩合，已开发出一种高效且简单的方案，用于制备2-oxo-2 H-色烯-3-羧酸乙酯3a – v第一次2。该反应通过Knoevenagel途径进行，随后由于强的电子吸收作用，将酚羟基选择性地添加到与CCl 3基团相邻的羰基上而不是酯羰基上，并且生成了香豆素衍生物3a，消除了CHCl 3。