A series of novel 11-O-aralkylcarbamoyl-3-O-descladinosylclarithromycin derivatives were designed, synthesized and evaluated for their in vitro antibacterial activity. The results showed that the majority of the target compounds displayed potent activity against erythromycin-susceptible S. pyogenes, erythromycin-resistant S. pneumoniae A22072 expressing the mef gene and S. pneumoniae AB11 expressing the mef and erm genes. Besides, most of the target compounds exhibited moderate activity against erythromycin-susceptible S. aureus ATCC25923 and B. subtilis ATCC9372. In particular, compounds 11a, 11b, 11c, 11e, 11f and 11h were found to exert favorable antibacterial activity against erythromycin-susceptible S. pyogenes with the MIC values of 0.015–0.125 μg/mL. Furthermore, compounds 10e, 11a, 11b and 11c showed superior activity against erythromycin-resistant S. pneumoniae A22072 with the MIC values of 0.25–0.5 μg/mL. Additionally, compound 11c was the most effective against all the erythromycin-resistant S. pneumoniae strains (A22072, B1 and AB11), exhibiting 8-, 8- and 32-fold more potent activity than clarithromycin, respectively.

设计，合成并评价了一系列新颖的11 - O-芳烷基氨基甲酰基-3 - O-去cladinosylclarithromycin衍生物的体外抗菌活性。结果表明，大多数目标化合物对易感红霉素的化脓性链球菌，表达mef基因的抗红霉素的肺炎链球菌A22072和表达mef和erm基因的肺炎链球菌AB11均显示出有效的活性。此外，大多数目标化合物对易受红霉素影响的金黄色葡萄球菌ATCC25923和枯草芽孢杆菌均显示中等活性。ATCC9372。尤其是，发现化合物11a，11b，11c，11e，11f和11h对易感红霉素的化脓性链球菌具有有利的抗菌活性，MIC值为0.015-0.125μg/ mL。此外，化合物10e，11a，11b和11c对于抗红霉素的肺炎链球菌A22072表现出优异的活性，MIC值为0.25-0.5μg/ mL。此外，化合物11c对所有抗红霉素的肺炎链球菌最有效 菌株（A22072，B1和AB11）的有效活性分别比克拉霉素高8倍，8倍和32倍。