Structural and Spectroscopic Study of Reactions between Chelating Zinc-Binding Groups and Mimics of the Matrix Metalloproteinase and Disintegrin Metalloprotease Catalytic Sites: The Coordination Chemistry of Metalloprotease Inhibition
作者:Hongshan He、David T. Puerta、Seth M. Cohen、Kenton R. Rodgers
DOI:10.1021/ic050723p
日期:2005.10.1
displace the aqua ligand in [Tp(Ph,Me)Zn(OH2)]+ to yield complexes having 1H NMR spectra consistent with the formation of five membered chelates. The 1H resonance frequencies of the chelating ligands typically shift upfield upon coordination to the zinc center, due to ring current effects from the pendant phenyl groups of the (Tp(Ph,Me))- ligand. Thus, the 1H NMR spectra provide a convenient and sensitive
为了解锌结合基团(ZBGs)与基质金属蛋白酶(MMPs)和整联蛋白金属蛋白酶(ADAMs)中催化性锌中心的配位化学,我们围绕三(3,5-甲基苯并吡唑基)氢硼酸锌(II)进行了模型化合物研究)氢氧化物和水络合物(分别为[[Tp(Ph,Me)ZnOH]和[Tp(Ph,Me)Zn(OH2)] + )硼酸盐)及其与一类螯合席夫碱配体的反应产物。结果表明质子配体HL(HL = N-丙基-1-(5-甲基-2-咪唑基)甲胺(5-Me-4-ImHPr),N-丙基-1-(4-咪唑基)甲胺(4-ImHPr)和N-丙基-1-(2-咪唑基)甲胺(2-ImHPr))与[Tp(Ph,Me)ZnOH]反应,得到通式[Tp(Ph,Me )ZnL],而与中性非质子配体的反应,L'(L'= N-丙基-1-(1-甲基-2-咪唑基)甲亚胺(1-Me-2-ImPr)和N-丙基-1-(2-噻唑基)甲胺(2-TaPr)),得到相应的[Tp(Ph,Me)ZnL]