Copper(II) complexes of salicylic acid combining superoxide dismutase mimetic properties with DNA binding and cleaving capabilities display promising chemotherapeutic potential with fast acting in vitro cytotoxicity against cisplatin sensitive and resistant cancer cell lines

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Abstract

The complexes [Cu(salH) 2(H 2O)] (1), [Cu(dipsH) 2(H 2O)] (2), {Cu(3-MeOsal)(H 2O) 0.75} n (3), [Cu(dipsH) 2(BZDH) 2] (4), [Cu(dipsH) 2(2-MeOHBZDH) 2]•EtOH (5), [Cu(sal)(phen)] (6), [Cu(dips)(phen)]•H 2O (7), and [Cu(3-MeOsal)(phen)] •H 2O (8) (salH 2 = salicylic acid; dipsH 2 = 3,5-diisopropylsalicylic acid; 3-MeOsalH 2 = 3-methoxysalicylic acid; BZDH = benzimidazole; 2-MeOHBZDH = 2 methanolbenzimidazole and phen =1,10-phenanthroline) were prepared and characterized. Structures of 4, 5, and 8 were determined by X-ray crystallography. Compounds 1-8 are potent superoxide dismutase mimetics, and they are inactive as inhibitors of COX-2 activity. Compounds 1, 4, and 5 exhibit moderate inhibition of COX-1. Complexes 6-8 display rapid micromolar cytotoxicity against cisplatin sensitive (breast (MCF-7), prostate (DU145), and colon (HT29)) and cisplatin resistant (ovarian (SK-OV-3)) cell lines compared to 1-5, and they exhibit potent in vitro DNA binding and cleavage capabilities.

Original languageEnglish
Pages (from-to)1957-1968
Number of pages12
JournalJournal of Medicinal Chemistry
Volume55
Issue number5
DOIs
Publication statusPublished - 8 Mar 2012

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