作者:Jian-Feng Zheng、Pei-Qiang Huang、Li-Jiao Jiang、Hong-Qiao Lan、Jian-Liang Ye
DOI:10.1055/s-0028-1087672
日期:——
Regioselective Grignard reagent additions to 3-methoxymaleimides and subsequent diastereoselective reductive dehydroxylation of the resulting N,O-acetals were studied. On the basis of these studies, a flexible and highly regio- and diastereoselective approach to methyl 5-alkyltetramate derivatives was disclosed. The method is the first direct and flexible asymmetric cationic synthon-based approach, and allows for the synthesis of various methyl (5S)-5-alkyltetramate derivatives that are otherwise inaccessible by the commonly used methods based on α-amino acids.
研究了区域选择性的格氏试剂添加到3-甲氧基马来酰亚胺及随后对生成的N,O-缩醛进行立体选择性的还原脱羟基反应。基于这些研究,揭示了一种灵活且具有高度区域和立体选择性的合成甲基5-烷基四酸酯衍生物的方法。这种方法是首个直接且灵活的基于不对称阳离子合成单元的方法,并允许合成各种甲基(5S)-5-烷基四酸酯衍生物,这些衍生物在常用的基于α-氨基酸的方法中是难以获得的。