通过苯胺与萘醌的氧化偶合,然后钯催化的氧化C H官能化和一锅还原甲基化反应,制备了新颖的高蓝色荧光N-甲基-6,11-二甲氧基苯并[2,3- b ]咔唑衍生物。对苯并咔唑荧光团进行了光物理表征,并研究了取代基的作用。(TD)-DFT计算忠实地再现了苯并咔唑的实验光物理性质,并揭示了取代基如何影响这些化合物的光物理性质。
Synthesis and studies of the antifungal activity of 2-anilino-/2,3-dianilino-/2-phenoxy- and 2,3-diphenoxy-1,4-naphthoquinones
作者:Elisa Leyva、Lluvia I. López、Ramón F. García de la Cruz、Claudia G. Espinosa-González
DOI:10.1007/s11164-016-2732-3
日期:2017.3
Several synthetic and natural naphthoquinone derivatives have been associated with antifungal activity. Candida albicans is a fungus that is known to exist in the normal human flora, but under certain conditions it can cause mild to fatal infections. Its pathogenicity has been associated with fungus conversion from cellular yeast to filamentous form Y – M . Inhibition of this process by several anilino-
几种合成的和天然的萘醌衍生物与抗真菌活性有关。 白色念珠菌 是一种已知存在于正常人类菌群中的真菌,但在某些条件下会引起轻度至致命的感染。其致病性与真菌从细胞酵母转化为丝状 Y – M有关 。为了发现结构,氧化还原性质和生物活性之间的相关性,研究了几种苯胺基,二苯胺基,苯氧基和二苯氧基-1,4-萘醌对这一过程的抑制作用。
Acid-Free Synthesis of Carbazoles and Carbazolequinones by Intramolecular Pd-Catalyzed, Microwave-Assisted Oxidative Biaryl Coupling Reactions - Efficient Syntheses of Murrayafoline A, 2-Methoxy-3-methylcarbazole, and Glycozolidine
作者:Vellaisamy Sridharan、M. Antonia Martín、J. Carlos Menéndez
DOI:10.1002/ejoc.200900537
日期:2009.9
A mild and efficient methodology for the synthesis of oxygenated carbazoles from diarylamines under non-acidic conditions was developed, based on a palladium-catalyzed, microwave-assisted double C–H bond activation process. This new protocol was successfully applied to the synthesis of three naturally occurring carbazoles, namely murrayafoline A, 2-methoxy-3-methylcarbazole, and glycozolidine. The
2-Phenylaminonaphthoquinones and related compounds: Synthesis, trypanocidal and cytotoxic activities
作者:Ivan Sieveking、Pablo Thomas、Juan C. Estévez、Natalia Quiñones、Mauricio A. Cuéllar、Juan Villena、Christian Espinosa-Bustos、Angélica Fierro、Ricardo A. Tapia、Juan D. Maya、Rodrigo López-Muñoz、Bruce K. Cassels、Ramon J. Estévez、Cristian O. Salas
DOI:10.1016/j.bmc.2014.07.030
日期:2014.9
A series of new 2-aminonaphthoquinones and relatedcompounds were synthesized and evaluated in vitro as trypanocidal and cytotoxic agents. Some tested compounds inhibited epimastigote growth and trypomastigote viability. Several compounds showed similar or higher activity and selectivity as compared with current trypanocidal drug, nifurtimox. Compound 4l exhibit higher selectivity than nifurtimox against
C−H Functionalization of 1,4-Naphthoquinone by Oxidative Coupling with Anilines in the Presence of a Catalytic Quantity of Copper(II) Acetate
作者:Cinthia da S. Lisboa、Vanessa G. Santos、Boniek G. Vaz、Nanci C. de Lucas、Marcos N. Eberlin、Simon J. Garden
DOI:10.1021/jo200354u
日期:2011.7.1
(2) with 1,4-naphthoquinone (3) to give N-aryl-2-amino-1,4-naphthoquinones (1) was found to be catalyzed by copper(II) acetate. In the absence of the catalyst, the reactions are slower and give lower yields with the formation of many colateral products. In the presence of 10 mol % hydrated copper(II) acetate, the reactions are generally more efficient in that they are cleaner, higher yielding, and faster
2-alkylamino-1,4-naphthoquinones with aromatic or aliphatic aldehydes can be achieved in high yields when a solution of N-substituted 2-amino-1,4-naphthoquinones and an aldehyde in benzene is irradiated in the presence of benzophenone. Irradiation of 2-anilino-1,4-naphthoquinones and cyclic ethers, such as tetrahydrofuran or dioxane, in the presence of benzophenone led to analogous photoalkylation products