作者:Chunrong Ma、Xiaoxiang Liu、Shu Yu、Shuo Zhao、James M. Cook
DOI:10.1016/s0040-4039(98)02497-6
日期:1999.1
A concise synthesis of optically active trytophan derivatives was developed via diastereoselective alkylation of the Schöllkopf chiral auxiliary 4 to provide alkyne 2 which underwent palladium-catalyzed heteroannulation with iodoanilines 1 to furnish protected tryptophans 3. Hydrolysis and subsequent saponification of 3 provided the desired tryptophans 12 in good yields.
通过Schöllkopf手性助剂4的非对映选择性烷基化开发了一种光学活性色氨酸衍生物的简明合成方法,以提供炔2,后者与碘代苯胺1进行钯催化的杂环化反应,从而提供受保护的色氨酸3。水解和随后的皂化3提供所需的色氨酸12以良好的收率。