Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 88, Issue 11, Pages 7601-7606Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.3c00705
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TBAJ-587, an analogue of bedaquiline (BDQ), exhibits high bacterial potency, low toxicity, and improved pharmacokinetic profile compared to the parent molecule. The first asymmetric synthesis of TBAJ-587 using a synergistic Li/Li bimetallic system is reported, achieving a yield of 90% and an enantiomeric ratio of 80:20. This efficient synthesis method can be scaled up for clinical drug production.
TBAJ-587, an analogue of the antituberculosis drug bedaquiline (BDQ), bearing a diarylquinoline skeleton retains the high bacterial potency, is less toxic, and has a better pharmacokinetic profile than the parent molecule, which has entered phase I clinical trials. In contrast to its fascinating bioactivity, however, the highly efficient synthesis of this molecule is still an unsolved challenge. Herein, the first asymmetric synthesis of TBAJ-587 based on a synergistic Li/Li bimetallic system is reported. The product could be obtained in an excellent yield of 90% and an enantiomeric ratio (er) of 80:20. Furthermore, the reaction could be conducted on a 5 g scale, and the product was obtained with 99.9:0.1 er after a simple recrystallization. The realization of this protocol will greatly aid the demand for clinical drug production.
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