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A set of 17 novel ketolides bearing an aryltetrazolyl-substituted alkyl side chain were synthesized and evaluated for their antibacterial activities, which the aryltetrazolyl group was selected to replace the hetero-aryl moiety of the side chain in telithromycin for designing new compounds. The synthesis of aryltetrazolyl alkylamines was reported in detail. The antibacterial activities of new ketolides were evaluated against a number of pathogens including macrolide-resistant organisms by using telithromycin as the reference. Many of the evaluated compounds exhibited remarkable activities against both erythromycin-susceptible and erythromycin-resistant organisms such as Staphylococcus aureus (except S. aureus AD-08), Pseudomonas aeruginosa and Escherichia coli. Among these, the compound 11e exhibited excellent antibacterial potency against all the strains in comparison with others.


Qiu-Ling Song, Bao-Qin Guo, Wen Zhang, Ping Lan, Ping-Hua Sun, Wei-Min Chen. Design, synthesis and antibacterial activity of novel ketolides bearing an aryltetrazolyl-substituted alkyl side chain. The Journal of antibiotics. 2011 Aug;64(8):571-81

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PMID: 21772308

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