期刊
JOURNAL OF MEDICINAL CHEMISTRY
卷 52, 期 22, 页码 6966-6978出版社
AMER CHEMICAL SOC
DOI: 10.1021/jm900340a
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资金
- Global Alliance for TB Drug Development
Both in vitro and in vivo metabolism studies suggested that 5-(2,8-bis(trifluoromethyl)quinolin-4-yloxymethyl)isoxazole-3-carboxylic acid ethyl ester (compound 3) with previously reported anti-tuberculosis activity is rapidly converted to two metabolites 3a and 3b. In order to improve the metabolic stability of this series, chemistry efforts were focused on the modification of the oxymethylene linker of compound 3 in the present study. Compound 9d with an alkene linker was found to be both more metabolically stable and more potent than compound 3, with a minimum inhibitory concentration (MIC) of 0.2 mu M and 2.6 mu M against replicating and nonreplicating Mycobaterium tuberculosis, respectively. These attributes make 9d ail interesting lead compound. A number of modifications were made to the structure of 9d, and it series of active Compounds were discovered. Although some neurotoxicity was observed at it high dosage, this new series was endowed with both improved in vitro anti-TB activity and metabolic stability in comparison to compound 3.
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