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![[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
An unusual bidentate methionine ruthenium(II) complex: photo-uncaging and antimicrobial activity
Aurideia P de Sousa1, Ana C S Gondim1, Eduardo H S Sousa1
1Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Campus do Pici s/n, Cx. Postal 12200, Fortaleza, CE, 60440-900, Brazil.
Abstract:
The cis-[Ru(bpy)2(Met)](PF6)2 complex, where Met = L-methionine and bpy = 2,2'-bipyridine, was prepared and fully characterized. This complex was subjected to blue and green light photolysis (453 and 505 nm, respectively) in aqueous solution, leading to the release of methionine and formation of the cis-[Ru(bpy)2(H2O)2]2+ ion. This latter photoproduct was shown to subsequently interact with DNA, while DNA photocleavage was noticed. In agreement with these reactivities, this compound exhibited an exciting antibacterial action, particularly against Gram-positive bacteria Staphylococcus aureus and Staphylococcus epidermidis, which was enhanced upon blue light irradiation. Altogether, these results showed that our strategy was successful in producing light-triggered DNA-binding agents with pharmacological potential and a likely blocking reagent for efficient peptide chemistry formation.
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