Synthesis and activity study of phosphonamidate dipeptides as potential inhibitors of VanX
作者:Ke-Wu Yang、Xu Cheng、Chuan Zhao、Cheng-Cheng Liu、Chao Jia、Lei Feng、Jian-Min Xiao、Li-Sheng Zhou、Hui-Zhou Gao、Xia Yang、Le Zhai
DOI:10.1016/j.bmcl.2011.09.020
日期:2011.12
In an effort to develop inhibitors of VanX, the phosphonamidate analogs of d-Ala-d-Ala dipeptides, N-[(1-aminoethyl) hydroxyphosphinyl]-glycine (1a), -alanine (1b), -valine (1c), -leucine (1d) and -phenylalanine (1e) were synthesized, characterized and evaluated using recombinant VanX. The crystal structure of the intermediate 6d was obtained (Deposition number: CCDC 839134), and structural analysis
为了开发VanX抑制剂,d -Ala- d -Ala二肽,N -[((1-氨基乙基)羟基膦基]]-甘氨酸(1a),-丙氨酸(1b),-缬氨酸(1c)的膦酰胺类似物,使用重组VanX合成,表征和评估了-亮氨酸(1d)和-苯丙氨酸(1e)。获得了中间体6d的晶体结构(沉积编号:CCDC 839134),结构分析表明,该晶体为正交晶,空间群为P2(1)2(1)2(1),PN的键长为1.62Å,C–N–P角为123.6°。磷酰胺酯1(a–e)证明是VanX的抑制剂,IC 50值分别为0.39、0.70、1.12、2.82和4.13 mM,这表明磷酸氨基酰胺的抑制活性取决于它们的R取代基的大小,其中最好的抑制剂具有最小取代基的1a。此外,1a对金黄色葡萄球菌(ATCC 25923)表现出抗菌活性,MIC值为0.25μg/ ml。