Thioester hydrolysis reactivity of zinc hydroxide complexes: investigating reactivity relevant to glyoxalase II enzymes
作者:Lisa M. Berreau、Amrita Saha、Atta M. Arif
DOI:10.1039/b512515d
日期:——
zinc α-hydroxycarboxylate complex, [(L2)Zn(O2CCH(OH)Ph)]ClO4·1.5H2O (4) or [(L3)Zn(O2CCH(OH)Ph)]ClO4·1.5H2O (5), and CH3SH. These reactions, to our knowledge, are the first reported examples of thioester hydrolysis mediated by zinc hydroxide complexes. The results of this study suggest that a terminal Zn–OH moiety may be required for hydrolysis reactivity with a thioester substrate.
最近报道的双核氢氧化锌络合物[(L 1 Zn 2)(μ-OH)](ClO 4)2(1,L 1 = 2,6-双[(双(2-吡啶基甲基)氨基)甲基] -4检查含有单个桥连氢氧化物的-甲基苯酚单阴离子)的硫酯水解反应性。在干燥的CD 3 CN中用羟苯基硫代乙酸S-甲酯处理1,导致在45(1)°C约65小时后无反应。双核锌氢氧化物的配合物Ñ甲基ñ - ((6-新戊基-2-吡啶基)甲基) - ñ - ((2-吡啶基)甲基)胺(L 2)和Ñ甲基ñ - ((6-新戊基-2-吡啶基)甲基) - ñ - ((2-吡啶基)乙基)胺(L 3)通过用锌的摩尔相当量的各配体的(制备螯合配体ClO 4)2 ·6H 2 O和KOH的甲醇溶液。这些络合物,[(L 2 Zn)2(µ-OH)2 ](ClO 4)2(2)和[(L 3 Zn)2(µ-OH)2 ](ClO 4)2(3)(已通过X射线晶体学进行了结构表征)在乙腈中的