Easy PC: α‐Hydroxy phosphonates were synthesized by copper/tert‐butyl hydroperoxide (TBHP)‐catalyzed oxidative addition reactions of H‐phosphonates with alcohols or ethers. Diverse α‐hydroxy phosphonates were obtained from substituted benzyl alcohols or alkyl alcohols and alkyl ethers in moderate to good yields.
, with the exception of 1a, behaved as competitive inhibitors for the three subclasses. Apart from 13 and 21, all the mercaptophosphonates tested exhibit a good inhibitory effect on the subclass B2 MBL CphA with low inhibition constants (Ki < 15 μM). Interestingly, compound 18 turned out to be a potent broad spectrum MBL inhibitor. The crystallographic structures of the CphA−10a and CphA−18 complexes
尽管目前已将商业化的活性位点丝氨酸β-内酰胺酶抑制剂与抗生素疗法并用,但尚未发现临床上有用的金属β-内酰胺酶(MBLs)抑制剂。在本文中,我们研究了巯基膦酸酯衍生物对MBL的三个亚类(B1,B2和B3)的抑制作用。除1a外,所有14种经测试的巯基膦酸酯均作为这三个亚类的竞争性抑制剂。除13和21外,所有测试的巯基膦酸酯均对B2 MBL CphA亚类表现出良好的抑制作用,且抑制常数较低(K i < 15μM )。有趣的是,化合物18事实证明它是一种有效的广谱MBL抑制剂。CphA- 10a和CphA- 18配合物的晶体结构表明10a的硫原子和18的膦酸酯基分别与Zn 2+离子相互作用。分子模型研究化合物10a和18与VIM-4(B1),CphA(B2)和FEZ-1(B3)酶之间相互作用的机理,取决于该酶和抑制剂的不同结合方式,与晶体结构。