Spectroscopic characterization and photoinduced processes of 4-oxoquinoline derivatives

被引:17
|
作者
Barbierikova, Zuzana [1 ]
Bella, Maros [2 ]
Lietava, Jozef [1 ]
Dvoranova, Dana [1 ]
Stasko, Andrej [1 ]
Fuezik, Tibor [3 ,4 ]
Milata, Viktor [2 ]
Jantova, Sona [3 ]
Brezova, Vlasta [1 ]
机构
[1] Slovak Tech Univ, Inst Phys Chem & Chem Phys, Fac Chem & Food Technol, SK-81237 Bratislava, Slovakia
[2] Slovak Tech Univ, Inst Organ Chem Catalysis & Petrochem, Fac Chem & Food Technol, SK-81237 Bratislava, Slovakia
[3] Slovak Tech Univ, Inst Biochem Nutr & Hlth Protect, Fac Chem & Food Technol, SK-81237 Bratislava, Slovakia
[4] Inst Chem Technol, Fac Food & Biochem Technol, Dept Biochem & Microbiol, CZ-16628 Prague 6, Czech Republic
关键词
4-Oxoquinolines (quinolones); UV/vis spectroscopy; FT-IR; Cathodic reduction; EPR spectroscopy; Spin trapping technique; Reactive oxygen species; Cytotoxic activity; HL-60; cells; STRUCTURE-PHOTOTOXICITY RELATIONSHIP; RADICAL-ANION FORMATION; SINGLET OXYGEN; ANTIBACTERIAL ACTIVITY; DNA CLEAVAGE; IN-VITRO; CIPROFLOXACIN; SUPEROXIDE; QUINOLONES; SOLVENT;
D O I
10.1016/j.jphotochem.2011.09.015
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Derivatives of 1,4-dihydro-4-oxoquinoline substituted at 4-pyridone or/and benzene moieties were synthesized (Q1-Q17), and characterized by UV/vis and FT-IR spectroscopy. In dimethylsulfoxide and acetonitrile solvents a significant influence of the substituent's character and position on the quinolone skeleton was observed on the absorption bands in the UVA region (315-400 nm). Electron-withdrawing substituents (nitro, cyano, acetyl or trifluoroacetyl) caused a red shift, resulting in the effective absorption of UVA light. Photoinduced generation of superoxide radical anion and singlet oxygen upon UVA irradiation was followed by EPR spectroscopy using in situ spin trapping technique; 4-hydroxy-2,2,6,6-piperidine (TMP) served for singlet oxygen (O-1(2)) detection. An efficient generation of superoxide radical anions and singlet oxygen was observed predominantly for nitro-substituted quinolones. The effect of quinolones on proliferation of HL-60 cells was monitored, and the values of IC50 evidenced the highest inhibition in the presence of ethyl 1,4-dihydro-6-fluoro-8-nitro-4-oxoquinoline-3-carboxylate (Q17) and ethyl 1,4-dihydro-8-nitro-4-oxoquinoline-3-carboxylate (Q5). (C) 2011 Elsevier BM. All rights reserved.
引用
收藏
页码:123 / 134
页数:12
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