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First-generation thiourea-catalysed asymmetric Strecker synthesis of tert -leucine. SJ Zuend et al. Nature 461 , 968 - 970 (2009) doi:10.1038/nature08 484.
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First-generation thiourea-catalysed asymmetric Strecker synthesis of tert-leucine. SJ Zuend et al. Nature461, 968-970 (2009) doi:10.1038/nature08484