Ruthenium(II)- and Palladium(II)-catalyzed position-divergent C H oxygenations of arylated quinones: Identification of hydroxylated quinonoid compounds with potent trypanocidal activity
作者:Talita B. Gontijo、Renato L. de Carvalho、Luiza Dantas-Pereira、Rubem F.S. Menna-Barreto、Torben Rogge、Lutz Ackermann、Eufrânio N. da Silva Júnior
DOI:10.1016/j.bmc.2021.116164
日期:2021.6
A diversity-oriented synthesis of hydroxylated aryl-quinones via C–H oxygenation reactions and their evaluation against Trypanosoma cruzi, the etiological agent of Chagas disease, was accomplished. With the use of ruthenium(II)- or palladium(II)-based catalysts, complementary regioselectivities were observed in the hydroxylation reactions and we have identified 9 compounds more potent than benznidazole
完成了通过C-H 氧化反应以多样性为导向的羟基化芳基醌合成及其对锥虫病(恰加斯病的病原体)的评估。通过使用基于钌 (II) 或钯 (II) 的催化剂,在羟基化反应中观察到互补的区域选择性,我们已经在这些新型芳基化和羟基化醌中鉴定了 9 种比苯并硝唑 (Bz) 更有效的化合物。例如,5-羟基-2-[4-(三氟甲基)苯基]-1,4-萘醌 ( 4h ) 的 IC 50/24 h 值为 22.8 µM,比最先进的药物 Bz 的活性高 4.5 倍。本文提供了第一个应用 C-H 活化用于芳基化醌的位置选择性羟基化以及将这些化合物鉴定为杀锥虫药物候选物的例子。