Abstract
Abstract: Chloroquine (CQ) was found to exhibit antiviral activity against novel coronaviruses, which makes the preparation of CQ enantiomers particularly important. In this work, we developed an efficient method for the preparation of CQ enantiomers by crystallization resolution and palladium-catalyzed coupling. The obtained chiral CQ had been fully assigned by 1H-1H COSY, 1H-13C HSQC, and 1H-13C HMBC spectra. Moreover, the enantiomeric excess value of CQ was rapidly detected by binaphthol phosphate as a chiral NMR shift reagent.
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