pH-dependent coordination mode of new bleomycin synthetic analogues with copper(II), iron(II), and zinc(II)

pH-dependent coordination mode of new bleomycin synthetic analogues with copper(II), iron(II), and zinc(II)
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新型博来霉素合成类似物与铜(II)、铁(II)和锌(II)的pH依赖性配位模式

DOI:
10.1021/ic00047a019
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发表时间:
1992
期刊:
影响因子:
--
通讯作者:
M. Shiro
M. Shiro
中科院分区:
--
文献类型:
--
作者:
E. Kimura;H. Kurosaki;Y. Kurogi;M. Shionoya;M. Shiro

文献摘要

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合成了一种新的简化的罗来霉素(BLM)模拟配体L1和L2(=一个脲连接的Li),研究了pH依赖的配位化学.比较L1(25 ° C,I=0.2(NaClO 4)时为9.8,7.3和5.6)和L2(7.8,6.9和3.7)的质子化常数,揭示了尿素基团的重要性,该基团适用于BLM中β-氨基丙氨酸部分相应尿素的主要功能。
The new simplified loleomycin (BLM) mimic ligands L 1 and L 2 (=a carbamide-attached L i ) have been synthesized to study pH-dependent coordination chemistry. Comparison of the protonation constants for L 1 (9.8, 7.3, and 5.6 at 25 o C, I=0.2 (NaClO 4 )) and L 2 (7.8, 6.9, and 3.7) reveals the significance of the carbamide group which is applied to the primary function of the corresponding carbamide of the β-aminoalanine portion in BLM.