作者:Boris A. Czeskis、Douglas D. O'Bannon、William J. Wheeler、Dean K. Clodfelter
DOI:10.1002/jlcr.899
日期:2005.2
accomplished based on Evans' chiral oxazolidinone auxiliary method. Diastereoselective methylation of p-nitrophenylacetic acid derivative was used as a key step. The auxiliary was reductively removed, and the resulting primary alcohol was converted into the corresponding amine. Its sulfonylation, reduction of the aromatic nitro group, and acylation with 3,5-difluorobenzoyl chloride led to the final product
AMPA 增效剂 LY450108-[14C] 的不对称合成包含连接到分子手性中心的 14C 标记,是基于 Evans 的手性恶唑烷酮辅助方法完成的。对硝基苯乙酸衍生物的非对映选择性甲基化被用作关键步骤。助剂被还原除去,所得伯醇转化为相应的胺。其磺酰化、芳族硝基的还原以及与 3,5-二氟苯甲酰氯的酰化作用得到最终产物。氚化 LY450108 的合成也有详细说明。版权所有 © 2005 John Wiley & Sons, Ltd.