A Convenient Method for Preparation of α-Imino Carboxylic Acid Derivatives and Application to the Asymmetric Synthesis of Unnatural α-Amino Acid Derivative
作者:Tsubasa Inokuma、Takahisa Jichu、Kodai Nishida、Akira Shigenaga、Akira Otaka
DOI:10.1248/cpb.c17-00158
日期:——
glycine derivatives for the synthesis of α-imino carboxylic acid derivatives. Using this methodology, utilization of unstable glyoxic acid derivatives was avoided. Furthermore, using this methodology we synthesized novel α-imino carboxylic acid derivatives such as α-imino phenyl ester, perfluoroalkyl etsers, imides, and thioester. The asymmetric Mannich reaction of those novel imine derivatives with 1
我们在本文中描述了锰(IV)介导的Np-甲氧基苯基(PMP)保护的甘氨酸衍生物的氧化,用于合成α-亚氨基羧酸衍生物。使用这种方法,避免了不稳定的乙二酸衍生物的利用。此外,使用这种方法,我们合成了新型的α-亚氨基羧酸衍生物,例如α-亚氨基苯基酯,全氟烷基酯,酰亚胺和硫代酯。还描述了这些新型亚胺衍生物与1,3-二羰基化合物的不对称曼尼希反应,与使用常规α-亚氨基酯型底物相比,新型α-亚氨基酰亚胺具有更高的化学收率和立体选择性。 。