4-取代的1-苄基-5-二苯基stibano- 1 H -1,2,3-三唑的合成,抗肿瘤活性和细胞毒性
摘要:
在CuBr(5 mol)存在下,通过铜催化的各种乙炔基苯乙烯(1)与苄基叠氮化物(2)的叠氮化物-炔烃环加成反应,合成了三取代的5-organostibano-1 H -1,2,3-三唑(3a–f)。%)在有氧条件下。5-stibanotriazoles与HCl的反应得到C5未取代的1,2,3-三唑(4a–f)。在几种肿瘤细胞系中评估了三取代的5-有机ostibano-1 H -1,2,3-三唑(3a–f)及其5-未取代的1,2,3-三唑(4a–f)的抗肿瘤活性。所有5-stibanotriazoles(3a–f)发挥了出色的抗肿瘤活性。相反,与5-stibanotriazoles(3a-f)相比,分子中不具有二苯基锑基团的5-un取代的1,2,3-三唑(4a-f)表现出非常低的抗肿瘤活性。在这两个系列的化合物中,取代的4-丁基似乎降低了抗肿瘤活性。但是,结果表明,分子中的有机金属(锑)需
Copper-Catalyzed Huisgen and Oxidative Huisgen Coupling Reactions Controlled by Polysiloxane-Supported Amines (AFPs) for the Divergent Synthesis of Triazoles and Bistriazoles
click reactions mediated by a polysiloxane‐supported secondary amine allow the preparation of novel heterocyclic compounds, that is, bistriazoles. Comparably, it is also surprising that the use of a diamine‐functional polysiloxane as ligand led to a classic Huisgen [3+2] cycloaddition in excellent yields. From the results of the present amine‐functional polysiloxanes‐controlledHuisgenreaction or oxidative
third set composed of organic azides. Synthesized triazoles were then tested in vitro against B16 melanomacellline. Amongst them, compounds a1b1 (R1 = p-nitrophenyl, R2 = benzyl), a4b1 (R1 = naphthyl, R2 = benzyl) and a4b5 (R1 = naphthyl, R2 = (R/S)- dioxolane) showed the best activityagainst B16 melanomacells, with IC50 of 5.12, 3.89 and 6.60 muM respectively.
Nonafluorobutanesulfonyl Azide: A Shelf-Stable Diazo Transfer Reagent for the Synthesis of Azides from Primary Amines
作者:José Ramón Suárez、Beatriz Trastoy、M. Eugenia Pérez-Ojeda、Rubén Marín-Barrios、Jose Luis Chiara
DOI:10.1002/adsc.201000417
日期:2010.10.4
Nonafluorobutanesulfonyl azide is an efficient, shelf-stable and cost-effective diazo transfer reagent for the synthesis of azidesfromprimaryamines. The reagent can also be successfully applied to the one-pot regioselective synthesis of 1,2,3-triazoles fromprimaryamines by a sequential diazo transfer and azide–alkyne 1,3-dipolar cycloaddition process catalyzed by copper. The cycloaddition step
Greener synthesis of 1,2,3-triazoles using a copper(<scp>i</scp>)-exchanged magnetically recoverable β-zeolite as catalyst
作者:Elizama R. Costa、Floyd C. D. Andrade、Danilo Yano de Albuquerque、Luanne E. M. Ferreira、Thiago M. Lima、Carolina G. S. Lima、Domingos S. A. Silva、Ernesto A. Urquieta-González、Márcio W. Paixão、Ricardo S. Schwab
DOI:10.1039/d0nj02473b
日期:——
Herein, we describe the preparation and thorough characterization of a novel magnetically recoverable copper(I)-exchanged β-zeolite and its use as an efficient catalyst for the synthesis of 1,2,3-triazoles via the one-pot three-component reaction of organic halides, terminal acetylenes, and sodium azide in water. The magnetically recoverable β-zeolite could be easily separated from the reaction mixture
Synthesis and Characterization of Copper(I)‐Cysteine Complex Supported on Magnetic Layered Double Hydroxide as an Efficient and Recyclable Catalyst System for Click Chemistry Using Choline Azide as Reagent and Reaction Medium
Abstract In this study, Fe 3 O 4 @LDH@cysteine–Cu(I) nanoparticles as a novel and recyclable catalytic system was designed and successfully synthesized. These nanoparticles show high catalytic activity for preparation of the triazole family through reaction of the organic halides with alkynes in the presence of choline azide as reagent and reaction medium. In addition, Fe 3 O 4 @LDH@cysteine–Cu(I)
摘要 在本研究中,设计并成功合成了 Fe 3 O 4 @LDH@半胱氨酸-Cu(I) 纳米粒子作为一种新型可回收的催化体系。这些纳米颗粒在叠氮化胆碱作为试剂和反应介质的情况下,通过有机卤化物与炔烃的反应,对制备三唑族显示出高催化活性。此外,Fe 3 O 4 @LDH@cysteine-Cu(I) 可以很容易地回收和重复使用五次,催化活性没有任何显着损失。图形摘要