Synthesis, structures, electrochemical studies and antioxidant activity of 5-aryl-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-7-carboxylic acids
作者:Jairo Quiroga、Pablo E. Romo、Alejandro Ortiz、José Hipólito Isaza、Braulio Insuasty、Rodrigo Abonia、Manuel Nogueras、Justo Cobo
DOI:10.1016/j.molstruc.2016.05.045
日期:2016.9
Abstract The synthesis of 5-aryl-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-7-carboxylic acids 3 from the reaction of 6-aminopyrimidines 1 with arylidene derivatives of pyruvic acid 2 under microwave and ultrasound irradiation is described. The orientation of cyclization process was determined by NMR measurements. The methodology provides advantages such as high yields and friendly to the environment
摘要 6-氨基嘧啶1与丙酮酸2的亚芳基衍生物反应合成5-芳基-4-氧代-3,4,5,8-四氢吡啶并[2,3-d]嘧啶-7-羧酸3描述了在微波和超声波照射下。环化过程的取向由NMR测量确定。该方法在不使用溶剂的情况下提供了诸如高产率和对环境友好等优点。研究了新型吡啶并嘧啶的抗氧化性能、DPPH 自由基清除能力、ORAC 和阳极氧化电位。