Total Synthesis of (−)-4,8,10-Tridesmethyl Telithromycin
摘要:
Novel sources of antibiotics are required to address the serious problem of antibiotic resistance. Telithromycin (2) is a third-generation macrolide antibiotic prepared from erythromycin (1) and used clinically since 2004. Herein we report the details of our efforts that ultimately led to the total synthesis of (-)-4,8,10-tridesmethyl telithromycin (3) wherein methyl groups have been replaced with hydrogens. The synthesis of desmethyl macrolides has emerged as a novel strategy for preparing bioactive antibiotics.
Desmethyl Macrolides: Synthesis and Evaluation of 4,8,10-Tridesmethyl Telithromycin
摘要:
There is an urgent need to discover new drugs to address the pressing problem of antibiotic resistance. Macrolide antibiotics such as erythromycin (1) are safe, broad spectrum antibiotics used in the clinic since 1954. Herein, we report the synthesis and evaluation of 4,8,10-tridesmethyl telithromycin (3), a novel desmethyl analogue of the third-generation drug telithromycin (2), which is a semisynthetic derivative of 1. Analogue 3 was found to possess antibiotic activity and was superior to telithromycin (2) when tested against resistant strains of Staphylococcus aureus possessing an A -> T mutation at position 2058 (Escherichia coli numbering).
Desmethyl Macrolides: Synthesis and Evaluation of 4,8-Didesmethyl Telithromycin
作者:Bharat Wagh、Tapas Paul、Ian Glassford、Charles DeBrosse、Dorota Klepacki、Meagan C. Small、Alexander D. MacKerell、Rodrigo B. Andrade
DOI:10.1021/ml300230h
日期:2012.12.13
sources of antibiotics to address the incessant and inevitable onset of bacterial resistance. To this end, we have initiated a structure-based drug design program that features a desmethylation strategy (i.e., replacing methyl groups with hydrogens). Herein we report the totalsynthesis, molecular modeling and biologicalevaluation of 4,8-didesmethyl telithromycin (5), a novel desmethyl analogue of the