An Efficient Synthesis of (2<b><i>S,</i></b>6S)- and meso-Diaminopimelic Acids via Asymmetric Hydrogenation
作者:Victor Hruby、Wei Wang、Chiyi Xiong、Jianqing Yang
DOI:10.1055/s-2002-19295
日期:——
An efficient synthesis of the title compounds l and 2 has been successfully developed. The key step is the asymmetric hydrogenation of dehydroamino acid 7 using [Rh(I)(COD)-(S,S) or -(R,R)-Et-DuPHOS)] + OTf to produce the optically active, protected amino acid derivatives in high ee (>95%) The approach also can he used for the synthesis of other isomers and analogues.
已成功开发了标题化合物 1 和 2 的有效合成方法。关键步骤是使用 [Rh(I)(COD)-(S,S) 或 -(R,R)-Et-DuPHOS)] + OTf 对脱氢氨基酸 7 进行不对称氢化,以产生具有光学活性的受保护氨基酸高 ee (>95%) 的衍生物 该方法还可用于合成其他异构体和类似物。