Synthesis, antioxidant activity and SAR study of novel spiro-isatin-based Schiff bases
作者:Fatih Sonmez、Zuhal Gunesli、Belma Zengin Kurt、Isil Gazioglu、Davut Avci、Mustafa Kucukislamoglu
DOI:10.1007/s11030-018-09910-7
日期:2019.11
AbstractA new series of 21 Schiff bases of spiro-isatin was synthesized, and their DPPH, CUPRAC and ABTS cation radical scavenging abilities were investigated for antioxidant activity. The results showed that all the synthesized compounds exhibited antioxidant activity for each assay. 5̍-(2,3-Dihydroxybenzylideneamino)spiro[[1,3] dioxolane-2,3̍-indoline]-2̍-on (5c) (IC50 = 4.49 µM, for DPPH; IC50 = 0
摘要合成了一系列新的21个螺旋-isatin席夫碱,并研究了其DPPH,CUPRAC和ABTS阳离子自由基清除能力的抗氧化活性。结果表明,所有合成的化合物在每次测定中均表现出抗氧化活性。(5c)上的5′-(2,3-二羟基亚苄基氨基)螺[[1,3]二氧戊环-2,3′-二氢吲哚] -2′-( DPPH的IC 50 = 4.49 µM; ABTS的IC 50 = 0.39 µM)。 + ;且A 0.50 = 0.42μM,对于CUPRAC)显示显著更好ABTS,CUPRAC和DPPH自由基清除比槲皮素能力(IC 50 = 8.69μM,对DPPH; IC 50 = 15.49微米,对于ABTS +。 ;以及A 0.50 = 18.47 µM(对于CUPRAC),用作标准。SAR研究表明,合成的化合物具有比DPPH和CUPRAC活性更高的ABTS 。+活性。此外,含有两个羟基的化合物(5c和