Stereoselective Synthesis of α-Amino(phenyl)methyl(phenyl)phosphinic Acids with<i>O</i>-Pivaloylated D-Galactosylamine as Chiral Auxiliary
作者:Yadan Wang、Yangyun Wang、Jipan Yu、Zhiwei Miao、Ruyu Chen
DOI:10.1002/chem.200901419
日期:2009.9.21
The diastereospecific formation of β‐N‐glycoside‐linked α‐amino phosphonic acid derivatives has been achieved in high yield by a Mannich‐type reaction. The reaction was performed by using O‐pivaloylated galactosylamine as a chiral template and SnCl4 as a promoter in THF (see scheme).
通过Mannich型反应可以高收率实现β- N-糖苷连接的α-氨基膦酸衍生物的非对映异构形成。通过使用邻氨基苯甲酸酯化的半乳糖胺作为手性模板,使用SnCl 4作为促进剂在THF中进行反应(参见方案)。