New Dihydroxytyrosyl Esters from Dicarboxylic Acids: Synthesis and Evaluation of the Antioxidant Activity In Vitro (ABTS) and in Cell-Cultures (DCF Assay)
作者:Elia Roma、Elena Mattoni、Paolo Lupattelli、Seyed Sepehr Moeini、Tecla Gasperi、Roberta Bernini、Sandra Incerpi、Daniela Tofani
DOI:10.3390/molecules25143135
日期:——
New dihydroxytyrosyl esters 2a, 2c–2j of dicarboxylic acids were synthesized from methyl orthoformate protected hydroxytyrosol 3 and diacyl chlorides. New compounds were characterized (HRMS, FT-IR, 1H- and 13C-NMR), and tested for antioxidant activity both in vitro (ABTS) and on L6 myoblasts and THP1 leukemic monocytes cell culture by DCF assay. According to the ABTS assay, compounds 2a, 2c–2j showed
由原甲酸甲酯保护的羟基酪醇 3 和二酰氯合成了二元羧酸的新二羟基酪氨酸酯 2a、2c-2j。对新化合物进行了表征(HRMS、FT-IR、1H-和 13C-NMR),并通过 DCF 测定测试了体外 (ABTS) 和 L6 成肌细胞和 THP1 白血病单核细胞培养物的抗氧化活性。根据 ABTS 测定,化合物 2a、2c-2j 的抗氧化能力 TEAC 值高达 Trolox 的两倍。在细胞环境中获得了非常高或完全的 ROS 保护,其中二羧酸结构的亲脂性和刚性似乎促进了抗氧化作用。MTT测定和增殖试验用于评估细胞活力。这些化合物可被视为一类新的食品或化妆品防腐剂。