Syntheses of new water-soluble dicobalt complexes having two cobalt-carbon bonds and their ability for DNA cleavage

被引:35
作者
Shimakoshi, H [1 ]
Kaieda, T [1 ]
Matsuo, T [1 ]
Sato, H [1 ]
Hisaeda, Y [1 ]
机构
[1] Kyushu Univ, Dept Chem & Biochem, Grad Sch Engn, Fukuoka 8128581, Japan
关键词
dicobalt complex; cobalt-carbon bond; water-soluble; DNA cleavage;
D O I
10.1016/S0040-4039(03)01252-8
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
One-pot syntheses of new water-soluble dicobalt complexes having two cobalt-carbon bonds are reported. The complexes were characterized by H-1 NMR and UV-vis spectroscopies as well as ESI-MS. These complexes were photosensitive, and photo-cleavage of the cobalt-carbon bonds upon irradiation with visible light produced methyl radicals which were detected by ESR spin-trapping techniques. The dicobalt complexes exhibited high ability for DNA cleavage in comparison with that for the corresponding monocobalt complex. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:5197 / 5199
页数:3
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