Highly Enantioselective Synthesis of N‐Unprotected Unnatural α‐Amino Acid Derivatives by Ruthenium‐Catalyzed Direct Asymmetric Reductive Amination
作者:Le'an Hu、Yuan‐Zheng Wang、Lei Xu、Qin Yin、Xumu Zhang
DOI:10.1002/anie.202202552
日期:2022.6.20
An unprecedented Ru-catalyzed direct asymmetric reductive amination of α-keto amides with ammonium salts has been achieved. This protocol provides an efficient and practical way for the synthesis of diverse enantioenriched α-aryl- or alkyl-substituted N-unprotected unnatural α-amino acids and N-unprotected β-branched α-amino acids. Further follow-up transformations enable access to drug intermediates
已经实现了前所未有的Ru催化的α-酮酰胺与铵盐的直接不对称还原胺化。该协议为合成多种对映体丰富的α-芳基或烷基取代的 N-未保护的非天然 α-氨基酸和 N-未保护的 β-支链 α-氨基酸提供了一种有效且实用的方法。进一步的后续转化能够获得药物中间体、肽和有机催化剂/配体。