(3-Amino-2-oxoalkyl)phosphonic acids and their analogs as novel inhibitors of D-alanine:D-alanine ligase
作者:Prasun K. Chakravarty、William J. Greenlee、William H. Parsons、Arthur A. Patchett、Patricia Combs、Alan Roth、Robert D. Busch、Theodore N. Mellin
DOI:10.1021/jm00128a033
日期:1989.8
The dipeptide D-alanyl-D-alanine is an essential precursor of bacterial peptidoglycan; thus, blocking its formation is a possible target for the design of novel antibacterial agents. The synthesis of this dipeptide by bacterial D-alanine:D-alanine ligase requires ATP. In analogy with glutamine synthetase, we hypothesized a mechanism for this enzyme involving the intermediacy of D-alanyl phosphate.
二肽D-丙氨酰-D-丙氨酸是细菌肽聚糖的重要前体;因此,阻止其形成是设计新型抗菌剂的可能目标。通过细菌D-丙氨酸:D-丙氨酸连接酶合成该二肽需要ATP。与谷氨酰胺合成酶类似,我们假设该酶涉及D-丙氨酰磷酸的中间体。已经合成了几种(3-氨基-2-氧代烷基)膦酸及其类似物,作为该提出的中间体的可能的抑制模拟物。其中最活跃的是(3(R)-氨基-2-氧丁基)膦酸(8a)和相应的氮杂类似物(22),是有效的连接酶抑制剂,尽管它们没有明显的抗菌活性。