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The quaternary king: Azithromycin (1), which has improved pharmacological profiles compared with erythromycins, was the target of an enantioselective synthesis. All the stereogenic quaternary carbon centers were elaborated by a desymmetrization of 2-substituted glycerols using a chiral imine/CuCl(2) catalyst.
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Hyoung Cheul Kim (2009) studied this question.
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