4-Substituted <scp>d</scp>-Glutamic Acid Analogues: The First Potent Inhibitors of Glutamate Racemase (MurI) Enzyme with Antibacterial Activity
作者:Alfonso de Dios、Lourdes Prieto、Jose Alfredo Martín、Almudena Rubio、Jesus Ezquerra、Mark Tebbe、Beatriz López de Uralde、Justina Martín、Ana Sánchez、Deborah L. LeTourneau、James E. McGee、Carole Boylan、Thomas R. Parr,、Michele C. Smith
DOI:10.1021/jm020901d
日期:2002.9.1
structure-activity relationship (SAR) studies led to benzothienyl derivatives such as 69 and 74 with increased potency (IC(50) = 0.036 and 0.01 microg/mL, respectively, HPLC assay). These compounds showed potent whole cell antibacterial activity against S. pneumoniae PN-R6, and good correlation with the enzyme assay. Compounds 69, 74 and biaryl derivative 52 showed efficacy in an in vivo murine thigh infection
描述了显示全细胞抗菌活性的第一种有效的谷氨酸消旋酶(MurI)抑制剂。具有(2R,4S)立体化学并且带有芳基,杂芳基,肉桂基或联芳基甲基取代基的光学纯的4-取代的D-谷氨酸类似物代表一类新型的谷氨酸消旋酶抑制剂。对D-Glu核心的探索导致了对铅化合物(-)-8和10的鉴定。发现2-萘基甲基衍生物10是有效的竞争性谷氨酸消旋酶活性抑制剂(K(i)= 16 nM,圆二色性)分析; IC(50)= 0.1 microg / mL高效液相色谱(HPLC)分析)。彻底的结构-活性关系(SAR)研究导致苯并噻吩衍生物(例如69和74)具有更高的效价(HPLC法分别测定IC(50)= 0.036和0.01 microg / mL)。这些化合物对肺炎链球菌PN-R6表现出强大的全细胞抗菌活性,并且与酶法测定具有良好的相关性。化合物69、74和联芳基衍生物52在体内鼠大腿感染模型中显示抗肺炎链球菌的功效。本