series of new isatin–mesalamine conjugates (9a–g) were synthesized via conjugation of isatin (3a) and its derivatives (3b–3d, 4, 5, and 6) with mesalamine (7) by using chloroacetyl chloride as a bifunctional linker. Compounds 3a–3d were prepared by employing Sandmeyer reaction. Compounds 4, 5, and 6 were obtained from isatin (3a) via previously reported methods. The synthesized compounds were characterized
一系列新的
靛红-
美沙拉嗪共轭物(图9a -克)的合成通过
靛红(缀合图3a)和它的衍
生物(图3b - 3D,4,5,和6用
美沙拉嗪()7通过使用
氯乙酰氯作为双功能接头) 。化合物3a - 3d是通过使用Sandmeyer反应制备的。化合物4,5和6是从
靛红(获得3A)经由先前报道的方法。通过IR,质谱,1 H NMR和13 C NMR光谱技术对合成的化合物进行表征。合成的化合物(3A - d,4,5,6,和图9a -克)的用于评价在体外通过
DPPH试验方法抗氧化活性使用
抗坏血酸作为标准。杂种9b(IC 50 = 368.6±3.5μM)和9f(IC 50 = 335.1± 2.9μM )表现出比其母体化合物3a(IC 50)更好的抗氧化活性 = 556.8±2.9μM),5(IC 50 = 511.9± 3.6μM )和7(IC 50 = 768.9±2.7μM)。选择了
乙酸诱发的大