Abstract
In this study, we synthesized a series of 3-triazolo-coumarins and evaluated their antioxidant activities respectively by two methods: trapping 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonate) cationic radical(ABTS+·) and oxidation of DNA which was induced by Cu2+/glutathione(GSH), ·OH and 2,2′-azobis(2-amidinopropane hydrochloride)(AAPH). Among the nine 3-triazolo-coumarins, compounds 6c and 6f-6i were synthesized for the first time, which exhibited the capability of terminating radical propagation-chains in oxidation of DNA induced by AAPH. In this study, we found that phenethylamine moiety, hydroxyl and ortho-methoxy are the key groups to enhance the antioxidant activities of compounds.
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Supported by the National Natural Science Foundation of China(No.90813003).
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Liu, Z., Wang, Y., Sun, J. et al. Design and synthesis of 3-triazolo-coumarins and their applications in scavenging radicals and protecting DNA. Chem. Res. Chin. Univ. 31, 526–533 (2015). https://doi.org/10.1007/s40242-015-5191-2
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DOI: https://doi.org/10.1007/s40242-015-5191-2