Synthesis of Substituted 1,3-Dimethyl-1H-quinoxalin-2-ones from Aniline Derivatives
摘要:
Substituted 1,3-dimethyl-1H-quinoxalin-2-ones (7) have been synthesized through the procedures of acylation, nitration, reduction, intramolecular alkylation, oxidation, and N-methylation starting from 3,4-disubstituted aniline.
Copper(I)-Catalyzed One-Pot Synthesis of 2<i>H</i>-1,4-Benzoxazin-3-(4<i>H</i>)-ones from <i>o</i>-Halophenols and 2-Chloroacetamides
作者:Enguang Feng、He Huang、Yu Zhou、Deju Ye、Hualiang Jiang、Hong Liu
DOI:10.1021/jo802818s
日期:2009.4.3
We developed an efficient and convenient method for preparing N-substituted 2H-1,4-benzoxazin-3-(4H)-ones from 2-halophenols via a nucleophilic substitution with 2-chloroacetamides followed by a CuI-catalyzed coupling cyclization. A broad spectrum of substrates can be effectively employed to afford the desired products in good yields. Since this method involves simple reaction conditions, a short reaction
我们开发了一种高效便捷的方法,可通过2-氯乙酰胺的亲核取代反应从2-卤代苯酚制备N-取代的2 H -1,4-苯并恶嗪-3-(4 H)-酮,然后进行CuI催化的偶联环化反应。可以有效地使用各种各样的底物,以高产率提供所需的产物。由于该方法涉及简单的反应条件,较短的反应时间和较宽的底物范围,因此对于有效制备生物学上和医学上感兴趣的分子特别有吸引力。
An Old Story in the Parallel Synthesis World: An Approach to Hydantoin Libraries
作者:Andrey V. Bogolubsky、Yurii S. Moroz、Olena Savych、Sergey Pipko、Angelika Konovets、Maxim O. Platonov、Oleksandr V. Vasylchenko、Vasyl V. Hurmach、Oleksandr O. Grygorenko
DOI:10.1021/acscombsci.7b00163
日期:2018.1.8
An approach to the parallel synthesis of hydantoin libraries by reaction of in situ generated 2,2,2-trifluoroethylcarbamates and α-amino esters was developed. To demonstrate utility of the method, a library of 1158 hydantoins designed according to the lead-likeness criteria (MW 200–350, cLogP 1–3) was prepared. The success rate of the method was analyzed as a function of physicochemical parameters
Beiträge zum reaktionsverhalten von derivaten der imidodithiokohlensäure—I
作者:W. Walek、M. Pallas、M. Augustin
DOI:10.1016/s0040-4020(01)93783-4
日期:1976.1
The reaction of potassium-alkyl-cyanoimidodithiocarbonate 1 with α-CH-acid halo compounds to 4-aminothiazoles 3, with monochloramine to 3-amino-1,2,4-thiadiazoles 5, and with α-halocarboxylic acid anilides to 4-thiazolidinones derivatives 12 is described. Characteristics of mass- and IR-spectra of the synthesized compounds are discussed.
Here, we describe the optimization, synthesis, and associated pharmacological analgesic activities of a newseries of bifunctional piperidinamide derivatives as sigma-1 receptor (σ1R) antagonists and mu opioid receptor (MOR) agonists. The new compounds were evaluated in vitro in σ1R and MOR binding assays. The most promising compound 114 (also called HKC-126), showed superior affinities for σ1R and
在这里,我们描述了一系列新的双功能哌啶酰胺衍生物作为 sigma-1 受体 (σ 1 R) 拮抗剂和 mu 阿片受体 (MOR) 激动剂的优化、合成和相关药理镇痛活性。新化合物在 σ 1 R 和 MOR 结合测定中进行了体外评估。最有前途的化合物114 (也称为HKC-126 )对 σ 1 R 和 MOR 显示出优异的亲和力,并且对与疼痛相关的其他受体具有良好的选择性。化合物114在醋酸扭体试验、福尔马林试验、热板试验和慢性压迫性损伤(CCI)神经病理性疼痛模型中显示出强大的剂量依赖性镇痛作用。与等量镇痛剂量的芬太尼相比,化合物114产生的阿片样副作用较少,例如奖赏倾向、呼吸抑制、身体依赖性和镇静作用。最后,该药物的药代动力学特性也是可接受的,这些结果表明化合物114作为混合 σ 1 R/MOR 配体,具有治疗神经性疼痛的潜力。