通过铜催化的串联Ullmann C–N偶联/叠氮化物-炔烃环加成反应取代三唑并[1,5- a ] [1,4]苯并二氮杂化物的简便方法
摘要:
已经描述了一种合成三唑并[1,5- a ] [1,4]苯并二氮杂苯的方法,该方法包括铜催化的串联Ullmann C–N偶联反应,然后进行叠氮化物-炔烃环加成反应。在CuI和碱存在下,邻叠氮基苄基溴化物和N-炔丙基化苯胺衍生物的反应导致三唑并[1,5- a ] [1,4]苯并二氮杂卓的形成。通过合成许多三唑并[1,5- a ] [1,4]苯并二氮杂卓衍生物,已成功地成功推广了该反应。
Synthesis and biological evaluation of novel bavachinin analogs as anticancer agents
作者:Nidhi Gupta、Arem Qayum、Arun Raina、Ravi Shankar、Sumeet Gairola、Shashank Singh、Payare L. Sangwan
DOI:10.1016/j.ejmech.2018.01.006
日期:2018.2
A library of 28 analogs of bavachinin including aliphatic and aromatic ethers, epoxide, chalcone, oxime, semicarbazide, oxime ether and triazole derivatives have been synthesized and evaluated for cytotoxicity against four different human cancer cell lines. Bio-evaluation studies exhibited better cytotoxic profile for many analogs compare to bavachinin. Best results were observed for a 1,2,3-triazole
Synthesis and structure-activity relationships for a new class of tetrahydronaphthalene amide inhibitors of Mycobacterium tuberculosis
作者:Hamish S. Sutherland、Guo-Liang Lu、Amy S.T. Tong、Daniel Conole、Scott G. Franzblau、Anna M. Upton、Manisha U. Lotlikar、Christopher B. Cooper、Brian D. Palmer、Peter J. Choi、William A. Denny
DOI:10.1016/j.ejmech.2021.114059
日期:2022.2
tetrahydronaphthalene amides (THNAs) as a new class of ATP synthase inhibitors that are effective in preventing the growth of Mycobacterium tuberculosis (M.tb) in culture. Design, synthesis and comprehensive structure-activityrelationship studies for approximately 80 THNA analogues are described, with a small selection of compounds exhibiting potent (in some cases MIC90 <1 μg/mL) in vitro M.tb growth inhibition
9c displayed significant activity against MCF-7 cells with an IC50 value of 25.03 µM. Density functional calculations at the B3LYP/6-31G* level of theory were used to confirm the high reactivity of the terminalalkyne as a dipolarophile. Quantum calculations were also used to investigate the mechanism of both the uncatalyzed and copper (I)-catalyzed azide–alkyne cycloaddition reaction (CuAAC). The catalyzed
以 (R)-香芹酮末端炔烃衍生物为原料,以 CuSO4,5H2O 为铜 (II),通过 Cu (I) 催化的叠氮化物-炔烃环加成反应合成一系列新型 1,4-二取代 1,2,3-三唑源和抗坏血酸钠作为还原剂,将 Cu (II) 还原为 Cu (I)。所有新合成的 1,2,3-三唑 9a-h 均基于其 HRMS 和 NMR 光谱数据进行了充分鉴定,然后通过 MTS 测定对 HT-1080 纤维肉瘤、A-549 肺癌的细胞生长抑制潜力进行了评估和两种乳腺癌(MCF-7 和 MDA-MB-231)细胞系。化合物9d对HT-1080和MCF-7细胞具有显着的细胞毒作用,IC50值分别为25.77和27.89 µM,而化合物9c对MCF-7细胞具有显着的活性,IC50值为25.03 µM。B3LYP/6-31G* 理论水平的密度泛函计算用于确认末端炔烃作为亲偶极体的高反应性。量子计算也用于研究未催化和铜
An Improved Synthesis of Pyrazolines from Aryl Azides and Acrylic Esters
作者:J. S. Yadav、B. V. Subba Reddy、V. Geetha
DOI:10.1055/s-2002-20482
日期:——
Substituted pyrazoline derivatives are synthesized in high yields through the cycloaddition reactions of azides with acrylates under Baylis-Hillman reaction conditions. Improved yields and enhanced rates are obtained using DABCO as the base.