背景:Strecker反应是首次报道的用于制备α-氨基腈的多组分反应。α-氨基腈是各种氨基酸,1,2-二嗪,杂环和生物活性化合物(如Saframycin A和Ecteinascidin 746)的重要中间体。采用Strecker方法使用MCR制备α-氨基腈,由于原子经济性而避免了多步操作,因此吸引了许多研究小组的注意。合成并遵循绿色化学原理。 方法:在纯净条件下,在一锅中以Cu(BF4)2.xH2O为催化剂,通过Strecker反应,通过TMSCN处理醛,胺,合成了A-氨基腈。已经用不同的伯胺和仲胺研究了各种芳族和脂族醛。 结果:通过在各种溶剂下选择模型反应来优化反应条件,并在纯净条件下发现良好的收率。此外,还研究了各种催化量的Cu(BF4)2.xH2O,发现3摩尔%的产率更高。已经用醛和胺的不同底物研究了该反应。通过比较其光谱数据(1 H NMR,13 C NMR,IR和MS)和物理
Design, synthesis, acetylcholinesterase inhibition and larvicidal activity of girgensohnine analogs on Aedes aegypti, vector of dengue fever
作者:Aurora L. Carreño Otero、Leonor Y. Vargas Méndez、Jonny E. Duque L.、Vladimir V. Kouznetsov
DOI:10.1016/j.ejmech.2014.03.067
日期:2014.5
Girgensohnine alkaloid was used as a natural model in the design and generation of new alkaloid-like alpha-aminonitrile series that was completed by the use of SSA-catalyzed Strecker reaction between commercial and inexpensive substituted benzaldehydes, piperidine (pyrrolidine, morpholine and N-methylpiperazine) and acetone cyanohydrin. Calculated ADMETox parameters of the designed analogs revealed their good pharmacokinetic profiles indicating lipophilic characteristics. In vitro AChE enzyme test showed that obtained alpha-aminonitriles could be considered as AChEIs with micromolar IC50 values ranging from 42.0 to 478.0 mu M (10.3-124.0 mu g/mL). Among this series, the best AChE inhibitor was the Pyrrolidine alpha-aminonitrile 3 (IC50 = 42 mu M) followed by the piperidine alpha-aminonitriles 2 and 6 (IC50 = 45 mu M and IC50 = 51 mu M, respectively), and the compound 7 (IC50 = 51 mu M). In vivo insecticidal activity of more active AChEIs against Aedes aegypti larvae was also performed showing a good larvicidal activity at concentrations less than 140 ppm, highlighting products 2 and 7 that could serve as lead compounds to develop new potent and selective insecticides. (C) 2014 Elsevier Masson SAS. All rights reserved.
A Catalytic, One-pot and Green Synthesis of α-Amino Nitriles: Cu(BF4)2.x H2O an Efficient Catalyst
作者:Krishnaji Tadiparthi、S. Raghavendra、Ahmed Kamal
DOI:10.2174/1570178614666170321124549
日期:2017.6.14
avoid multistep synthesis and to follow Green chemistry principles. Methods: A-aminonitriles have been synthesized usingStreckerreaction by treatment of aldehydes, amines, with TMSCN in the presence of Cu(BF4)2.xH2O as a catalyst in one pot under neat conditions. Various aromatic and aliphatic aldehydes have been studied with different primary and secondary amines. Results: The reaction condition has
背景:Strecker反应是首次报道的用于制备α-氨基腈的多组分反应。α-氨基腈是各种氨基酸,1,2-二嗪,杂环和生物活性化合物(如Saframycin A和Ecteinascidin 746)的重要中间体。采用Strecker方法使用MCR制备α-氨基腈,由于原子经济性而避免了多步操作,因此吸引了许多研究小组的注意。合成并遵循绿色化学原理。 方法:在纯净条件下,在一锅中以Cu(BF4)2.xH2O为催化剂,通过Strecker反应,通过TMSCN处理醛,胺,合成了A-氨基腈。已经用不同的伯胺和仲胺研究了各种芳族和脂族醛。 结果:通过在各种溶剂下选择模型反应来优化反应条件,并在纯净条件下发现良好的收率。此外,还研究了各种催化量的Cu(BF4)2.xH2O,发现3摩尔%的产率更高。已经用醛和胺的不同底物研究了该反应。通过比较其光谱数据(1 H NMR,13 C NMR,IR和MS)和物理