作者:B. Raju、Sampathkumar Anandan、Shihai Gu、Prudencio Herradura、Hardwin O’Dowd、Bum Kim、Marcela Gomez、Corinne Hackbarth、Charlotte Wu、Wen Wang、Zhengyu Yuan、Richard White、Joaquim Trias、Dinesh V. Patel
DOI:10.1016/j.bmcl.2004.04.036
日期:2004.6
Deoxynegamycin (1b) is a protein synthesis inhibitor with activity against Gram-negative (GN) bacteria. A series of conformationally restricted analogs were synthesized to probe its bioactive conformation. Indeed, some of the constrained analogs were found to be equal or better than deoxynegamycin in protein synthesis assay (1b, IC(50)=8.2 microM; 44, IC(50)=6.6 microM; 35e(2), IC(50)=1 microM). However
脱氧霉素(1b)是一种蛋白质合成抑制剂,对革兰氏阴性(GN)细菌具有活性。合成了一系列构象受限的类似物以探测其生物活性构象。确实,在蛋白质合成测定中发现某些受约束的类似物与脱氧新霉素相同或更好(1b,IC(50)= 8.2 microM; 44,IC(50)= 6.6 microM; 35e(2),IC(50) = 1微米)。然而,脱氧新霉素在体外具有最佳的全细胞抗菌活性(大肠杆菌,MIC = 4-16 microg / mL;肺炎克雷伯菌,MIC = 8 microg / mL),这表明其他因素(例如渗透)也可能对整体有贡献。细胞活性。一个新发现是,脱氧新霉素在大肠杆菌鼠类败血病模型中有效(ED(50)= 4.8 mg / kg),