3-(4-nitrobenzylidene)pentane-2,4-dione | 29197-16-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 3-(4-nitrobenzylidene)pentane-2,4-dione
• 英文别名: 3-(4-nitrophenyl)methylene-2,4-pentanedione；3-[(4-Nitrophenyl)methylidene]pentane-2,4-dione
• CAS: 29197-16-8
• 化学式: C₁₂H₁₁NO₄
• 分子量: 233.224
• InChiKey: YZFGYWARVCXNKL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  80
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  3-(4-nitrobenzylidene)pentane-2,4-dione 在 4-二甲氨基吡啶 、 sodium hydroxide 、 1-(3-二甲基氨基丙基)-3-乙基碳二亚胺 作用下， 以 乙醇 、 二氯甲烷 、 丙酮 为溶剂， 反应 14.0h， 生成 Ethyl 1-[3-[[5-acetyl-2,6-dimethyl-4-(4-nitrophenyl)-1,4-dihydropyridine-3-carbonyl]amino]propyl]-4-phenylpiperidine-4-carboxylate
  参考文献：
  名称：

  Design and Synthesis of Novel α_1a Adrenoceptor-Selective Dihydropyridine Antagonists for the Treatment of Benign Prostatic Hyperplasia

  摘要：

  We report the synthesis and evaluation of novel alpha(1a) adrenoceptor subtype-selective antagonists. Systematic modification of the lipophilic 4,4-diphenylpiperidinyl moiety of the dihydropyridine derivatives 1 and 2 provided several highly selective and potent alpha(1a), antagonists. From this series, we identified the 4-(methoxycarbonyl)-4-phenylpiperidine analogue SNAP 5540 (-) [(-)-63] for further characterization. When examined in an isolated human prostate tissue assay, this compound was found to have a K-i of 2.8 nM, in agreement with the cloned human receptor binding data (K-i = 2.42 nM). Further evaluation of the compound in isolated dog prostate tissue showed a K-i of 3.6 nM and confirmed it to be a potent antagonist (K-b = 1.6 nM). In vivo, this compound effectively blocked the phenylephrine-stimulated increase in intraurethral pressure (IUP) in mongrel dogs, at doses which did not significantly affect the arterial pressure (diastolic blood pressure, DBP), with a DBP K-b/IUP K-b ratio of 16. In addition, (-)-63 also showed greater than 40 000-fold selectivity over the rat L-type calcium channel and 200-fold selectivity over several G protein-coupled receptors, including histamine and serotonin subtypes. These findings prove that alpha(1a) adrenoceptor-subtype selective antagonists such as (-)-63 may be developed as uroselective agents for an improved treatment of BPH over nonselective alpha(1) antagonists such as prazosin and terazosin, with fewer side effects.

  DOI：

  10.1021/jm980506g
• 作为产物：
  描述：

  3-[(4-硝基苯基)甲基]戊烷-2,4-二酮 在 溶剂黄146 、 sodium nitrite 作用下， 以 水 为溶剂， 生成 3-(4-nitrobenzylidene)pentane-2,4-dione
  参考文献：
  名称：

  NITROXYL ION SOURCE WITH SECOND ORDER REACTION NITROXYL RELEASE

  摘要：

  C-亚硝基化合物在血液中以二阶反应释放亚硝酰离子。

  公开号：

  US20100094060A1

文献信息

• Efficient Solvent-Free Knoevenagel Condensation Between β-Diketone and Aldehyde Catalyzed by Silica Sulfuric Acid
  作者：Fuyi Zhang、Yu-Xin Wang、Feng-Ling Yang、Hong-Yu Zhang、Yu-Fen Zhao

  DOI：10.1080/00397910903576594

  日期：2011.1.25

  utilized as an efficient heterogeneous recyclable catalyst for Knoevenagel condensation between poorly reactive β-diketones and aldehydes under solvent-free conditions. This protocol also works well with more reactive β-ketoesters. The condensation is efficient, clean, and mild. The scope and generality of the Knoevenagel condensation were investigated. The procedure led only to the Knoevenagel product,

  二氧化硅硫酸已被用作一种有效的多相可回收催化剂，用于在无溶剂条件下反应性差的 β-二酮和醛之间的 Knoevenagel 缩合。该协议也适用于更具反应性的 β-酮酯。冷凝是高效、清洁和温和的。研究了 Knoevenagel 缩合的范围和一般性。该程序仅产生 Knoevenagel 产物，在室温下未检测到源自随后的 β-二酮与烯烃的迈克尔加成反应的副产物。温度升高导致随后的迈克尔加成，并将其应用于 9-芳基-1,8-二氧代-八氢氧杂蒽衍生物的有效合成。
• Enzyme Promiscuity as a Remedy for the Common Problems with Knoevenagel Condensation
  作者：Dominik Koszelewski、Ryszard Ostaszewski

  DOI：10.1002/chem.201901491

  日期：2019.8

  lipase‐catalyzed tandem reaction toward α,β‐enones/enoesters is presented. For the synthesis of the desired products the tandem process based on enzyme‐catalyzed hydrolysis and Knoevenagel reaction starting from enol acetates and aldehyde is developed. The relevant impact of the reaction conditions including organic solvent, enzyme type, and temperature on the course of the reaction was revealed. It

  提出了一种基于脂肪酶对α，β-烯醇/烯酸酯的串联反应的新方案。为了合成所需产物，开发了基于酶催化水解和从烯醇乙酸酯和醛开始的Knoevenagel反应的串联方法。揭示了反应条件（包括有机溶剂，酶类型和温度）对反应过程的相关影响。结果表明，通过酶促反应确保活性亚甲基化合物从相应的烯醇羧酸盐中的可控释放大大减少了不需要的副产物的形成。此外，通过包括与各种醛前体结合的第二串联化学酶转化来扩展该方案。在仔细优化反应条件后，E / Z选择性。
• Synthesis and biological evaluation of a novel series of 1,5-benzothiazepine derivatives as potential antimicrobial agents
  作者：Lanzhi Wang、Ping Zhang、Xuemei Zhang、Yonghong Zhang、Yuan Li、Yongxiang Wang

  DOI：10.1016/j.ejmech.2008.12.021

  日期：2009.7

  Two series of novel 1,5-benzothiazepine derivatives (23 compounds) were efficiently synthesized and evaluated for antibacterial and antifungal activities. The results indicated that the compounds possessed a broad spectrum of activity against the tested microorganisms and showed higher activity against fungi than bacteria. Compound 2e exhibited the greatest antimicrobial activity. Preliminary study

  有效地合成了两个系列的新型1,5-苯并硫氮杂pine衍生物（23个化合物），并评估了其抗菌和抗真菌活性。结果表明，该化合物对被测微生物具有广谱的活性，并且与细菌相比，对真菌的活性更高。化合物2e表现出最大的抗菌活性。对结构-活性关系的初步研究表明，苯环中的取代基对这些化合物的抗菌活性有很大影响。
• Magnesium perchlorate as efficient Lewis acid for the Knoevenagel condensation between β-diketones and aldehydes
  作者：Giuseppe Bartoli、Marcella Bosco、Armando Carlone、Renato Dalpozzo、Patrizia Galzerano、Paolo Melchiorre、Letizia Sambri

  DOI：10.1016/j.tetlet.2008.02.093

  日期：2008.4

  A new protocol for the Knoevenagel condensation between β-diketones and aliphatic and aromatic aldehydes promoted by Mg(ClO4)2 under mild conditions is reported.

  报道了在温和条件下由Mg（ClO 4）2促进β-二酮与脂族和芳族醛之间的Knoevenagel缩合的新方案。
• Reaction of Corey Ylide with α,β-Unsaturated Ketones: Tuning of Chemoselectivity toward Dihydrofuran Synthesis
  作者：Alexey O. Chagarovsky、Ekaterina M. Budynina、Olga A. Ivanova、Elena V. Villemson、Victor B. Rybakov、Igor V. Trushkov、Mikhail Ya. Melnikov

  DOI：10.1021/ol500877c

  日期：2014.6.6

  A straightforward, efficient, and reliable approach to synthetically valuable 2,3-dihydrofurans via a reaction between Corey ylide and α,β-unsaturated ketones has been developed. The use of simple and widely spread starting materials as well as mild reaction conditions and scalability provide a broad scope of 2,3-dihydrofurans.

  通过Corey ylide与α，β-不饱和酮之间的反应，开发了一种合成有价值的2,3-二氢呋喃的简单，有效和可靠的方法。简单且广泛分布的起始原料的使用以及温和的反应条件和可扩展性提供了广泛的2,3-二氢呋喃范围。