ethyl 5-(4-chlorophenyl)-3,5-dioxopentanoate | 114957-79-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: ethyl 5-(4-chlorophenyl)-3,5-dioxopentanoate
• CAS: 114957-79-8
• 化学式: C₁₃H₁₃ClO₄
• 分子量: 268.697
• InChiKey: PQMLAJXEFQRRIM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  18
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  60.4
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  邻三氟甲基苯甲醛 、 (E)-3-氨基巴豆酸乙酯 、 ethyl 5-(4-chlorophenyl)-3,5-dioxopentanoate 以 乙醇 为溶剂， 反应 18.0h， 以8%的产率得到diethyl (2Z,3S,4R)-2-[2-(4-chlorophenyl)-2-oxoethylidene]-6-methyl-4-[2-(trifluoromethyl)phenyl]-3,4-dihydro-1H-pyridine-3,5-dicarboxylate
  参考文献：
  名称：

  2-(2-Aryl-2-oxoethylidene)-1,2,3,4-tetrahydropyridines. Novel isomers of 1,4-dihydropyridine calcium channel blockers

  摘要：

  The title compounds are novel double bond isomers of 1,4-dihydropyridine-type calcium channel blockers (CCB). These derivatives were prepared by using the Hantzsch dihydropyridine synthesis. The assignment of structure was based on spectroscopic data and a regiochemically unambiguous synthesis. Several of the analogues inhibited [3H]nitrendipine binding with IC50 values as low as 25 nM. By comparison, nifedipine, a clinically useful 1,4-dihydropyridine CCB, inhibits [3H]nitrendipine binding with an IC50 of 1.6 nM. In the Langendorff rat heart preparation, treatment with the more potent derivatives produced marked dose-related increases in coronary flow with little or no effect on heart rate or contractility, except at the highest concentrations tested. The selectivity for vascular versus cardiac effects was similar to that of nifedipine, i.e., the concentration producing vasodilation was approximately 2 orders of magnitude lower than the concentration eliciting cardiodepression. These novel isomers extend the structure-activity relationships for calcium channel blockers into a series closely related to the 1,4-dihydropyridines.

  DOI：

  10.1021/jm00403a030
• 作为产物：
  描述：

  溴乙酸乙酯 、 对氯苯乙酰腈 在 三甲基氯硅烷 、 锌 、 盐酸 作用下， 以 四氢呋喃 、 水 为溶剂， 反应 4.5h， 以74%的产率得到ethyl 5-(4-chlorophenyl)-3,5-dioxopentanoate
  参考文献：
  名称：

  Blaise 反应的变化：3,5-Dioxopentanoates 和 3-Amino-5-oxopent-3-enoates 的合成

  摘要：

  我们通过锌介导的现成 3-氧代丙腈缩合，实现了多种 3,5-二氧代戊酸酯（3,5-二酮酯）和 3-amino-5-oxopent-3-enoates 的简便合成。 α-氰基酮）与溴乙酸乙酯。该反应是经典 Blaise 反应的变体，用于合成具有 3,5-二酮酯或 3-烯氨基 5-酮酯官能团的三官能化合物。我们的研究表明，当两个官能团处于孪生关系时，腈上的 Blaise 反应优先于相邻酮上的 Reformatsky 反应发生，如在 α-氰基酮中发现的，可能是由于锌络合导致亲电性增加腈。

  DOI：

  10.1055/s-0035-1561662

文献信息

• BODGER, EDWARD W.;TAYLOR, MICHAEL D.
  作者：BODGER, EDWARD W.、TAYLOR, MICHAEL D.

  DOI：——

  日期：——
• US4732898A
  申请人：——

  公开号：US4732898A

  公开（公告）日：1988-03-22
• Variations on the Blaise Reaction: Synthesis of 3,5-Dioxopentanoates and 3-Amino-5-oxopent-3-enoates
  作者：H. Rao、Nandurka Muthanna

  DOI：10.1055/s-0035-1561662

  日期：——

  (α-cyano ketones) with ethyl bromoacetate. The reaction is a variation on the classical Blaise reaction, tuned to the synthesis of trifunctional compounds having 3,5-diketo ester or 3-enamino 5-keto ester functional groups. Our studies revealed that the Blaise reaction on the nitrile occurs in preference to the Reformatsky reaction on the neighboring ketone when the two functional groups are in a geminal

  我们通过锌介导的现成 3-氧代丙腈缩合，实现了多种 3,5-二氧代戊酸酯（3,5-二酮酯）和 3-amino-5-oxopent-3-enoates 的简便合成。 α-氰基酮）与溴乙酸乙酯。该反应是经典 Blaise 反应的变体，用于合成具有 3,5-二酮酯或 3-烯氨基 5-酮酯官能团的三官能化合物。我们的研究表明，当两个官能团处于孪生关系时，腈上的 Blaise 反应优先于相邻酮上的 Reformatsky 反应发生，如在 α-氰基酮中发现的，可能是由于锌络合导致亲电性增加腈。
• 2-(2-Aryl-2-oxoethylidene)-1,2,3,4-tetrahydropyridines. Novel isomers of 1,4-dihydropyridine calcium channel blockers
  作者：Michael D. Taylor、Edward W. Badger、Robert P. Steffen、Stephen J. Haleen、Thomas A. Pugsley、Yu Hsin Shih、Ronald E. Weishaar

  DOI：10.1021/jm00403a030

  日期：1988.8

  The title compounds are novel double bond isomers of 1,4-dihydropyridine-type calcium channel blockers (CCB). These derivatives were prepared by using the Hantzsch dihydropyridine synthesis. The assignment of structure was based on spectroscopic data and a regiochemically unambiguous synthesis. Several of the analogues inhibited [3H]nitrendipine binding with IC50 values as low as 25 nM. By comparison, nifedipine, a clinically useful 1,4-dihydropyridine CCB, inhibits [3H]nitrendipine binding with an IC50 of 1.6 nM. In the Langendorff rat heart preparation, treatment with the more potent derivatives produced marked dose-related increases in coronary flow with little or no effect on heart rate or contractility, except at the highest concentrations tested. The selectivity for vascular versus cardiac effects was similar to that of nifedipine, i.e., the concentration producing vasodilation was approximately 2 orders of magnitude lower than the concentration eliciting cardiodepression. These novel isomers extend the structure-activity relationships for calcium channel blockers into a series closely related to the 1,4-dihydropyridines.