Diverse reactivity in microwave-promoted catalyst-free coupling of substituted anilines with ethyl trifluoropyruvate and biological evaluation
作者:Chen Zhang、Dao-Min Zhuang、Jia Li、Si-Yuan Chen、Xiao-Long Du、Jian-Yong Wang、Jing-Yun Li、Biao Jiang、Jian-Hua Yao
DOI:10.1039/c3ob40650d
日期:——
Diverse reactivity by coupling of substituted anilines with ethyl trifluoropyruvate was developed under microwave irradiation without catalysts to generate 3-trifluoromethyl-3-hydroxy oxindoles, aromatic hydroxy trifluoromethyl esters, and 1,2-dicarbonyl compounds in a fast and efficient manner. The plausible mechanism for obtaining different products was proposed. Furthermore, the anti-HIV activity of aromatic hydroxy trifluoromethyl esters was first reported. The best inhibitory activity against wild-type HIV-1 IIIB was exemplified by trifluoromethyloxindole 3q with an IC50 = 5.8 μM, which also displayed potential activity against Y181C mutant virus with an IC50 = 7.5 μM. More significantly, the activities of oxindoles 3q and 3r to inhibit K103N/Y181C double mutant HIV-1 reverse transcriptase (RT) are probably similar to that of the second-generation nonnucleoside inhibitor HBY 097 by docking calculation.
在无催化剂条件下,通过微波辐照,将取代苯胺与三氟丙酮酸乙酯耦合,快速高效地合成了三氟甲基-3-羟基二氢吲哚、芳香羟基三氟甲酯和1,2-二羰基化合物。提出了获得不同产物的可能机理。此外,首次报道了芳香羟基三氟甲酯的抗HIV活性。以三氟甲基二氢吲哚3q为例,其对野生型HIV-1 IIIB的IC50 = 5.8 μM,对Y181C突变病毒的IC50 = 7.5 μM,显示出潜在的抑制活性。更显著的是,通过对接计算,二氢吲哚3q和3r抑制K103N/Y181C双重突变HIV-1逆转录酶(RT)的活性可能与第二代非核苷类抑制剂HBY 097相似。