1,5-Benzoxazepines vs 1,5-Benzodiazepines. One-Pot Microwave-Assisted Synthesis and Evaluation for Antioxidant Activity and Lipid Peroxidation Inhibition
作者:Constantinos G. Neochoritis、Constantinos A. Tsoleridis、Julia Stephanidou-Stephanatou、Christos A. Kontogiorgis、Dimitra J. Hadjipavlou-Litina
DOI:10.1021/jm100739n
日期:2010.12.9
conditions from 2,3-diaminophenol and ketones through microwave assisted acid catalysis, the benzoxazepine/benzodiazepine ratio depending on the R1 and R3 aryl substituents. The otherwise inaccessible and unknown 2,2-dimethyl-4-aryl-1,5-benzodiazepines 8 were also prepared in an analogous manner. The reaction mechanism was investigated by means of DFT calculations. Structural assignments of the new compounds
通过微波辅助酸催化,一锅法,无溶剂条件由2,3-二氨基苯酚和酮合成了氨基1,5,5-苯并二氮杂卓2和5和羟基1,,5-苯并二氮杂卓3和6。比率取决于R 1和R 3芳基取代基。还以类似的方式制备了原本难以接近和未知的2,2-二甲基-4-芳基-1,5-苯并二氮杂s 8。通过DFT计算研究了反应机理。新化合物的结构分配以及1 H和13的完整分配在分析1 H和13 C NMR(1D和2D),IR,MS和元素分析数据的基础上,已明确获得C NMR信号,而在5中存在一个氨基基团和一个C中存在一个羟基基团。通过衍生化证实了6。化合物2,3,图5f,图6a,图6c,图6d,图6f,6H,8C,和12的评价为体外抗氧化剂和过氧化脂质抑制剂。化合物6f也被评估为体内抗炎剂。化合物发现2和6f分别是最有效的脂氧合酶和脂质过氧化抑制剂。