Journal of Inorganic Biochemistry 2015-08-01

Synthesis, crystal structure and anaerobic DNA photocleavage of ruthenium complexes [Ru(tpy)(dpoq)Cl](+) and [Ru(tpy)(dpoq)CH3CN](2.).

Hui-juan Yu, Shu-mei Huang, Hui Chao, Liang-nian Ji

文献索引：J. Inorg. Biochem. 149 , 80-7, (2015)

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摘要

Two new Ru(II) complexes [Ru(tpy)(dpoq)Cl](+)1 and [Ru(tpy)(dpoq)CH3CN](2+)2 (tpy = 2,2':6',2''-terpyridine; dpoq = dipyrido[1,2,5]oxadiazolo[3,4-b]quinoxaline) have been synthesized and characterized by elemental analysis, (1)H NMR, electrospray ionization mass spectra (ESI-MS) and X-ray crystallographic study. The experimental results of spectra titration, thermal denaturation and viscosity measurements suggest that the two complexes intercalatively bind to DNA. When irradiated under light, the two complexes could efficiently photocleave DNA both under aerobic and anaerobic condition. The mechanism studies reveal that the photocleavage reaction functions through both oxygen-independent (photoinduced electron transfer, type III reaction) and oxygen-dependent (singlet oxygen generation, type II reaction) pathways and the oxygen-independent pathway is the major process. These complexes will be more promising photodynamic therapy (PDT) candidates used for treating hypoxic tumors.Copyright © 2015 Elsevier Inc. All rights reserved.

相关化合物

  • 溴化乙啶
  • 四正丁基高氯酸铵
  • 哒螨灵

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