作者:Takayuki Yakura、Yuya Yoshimoto、Chisaki Ishida、Shunsuke Mabuchi
DOI:10.1016/j.tet.2007.03.079
日期:2007.5
Stereoselective synthesis of an immunomodulator (+)-conagenin was achieved. Both amine and carboxylic acid moieties were prepared from commercially available optically active methyl 3-hydroxy-2-methylpropanoate using dirhodium(II)-catalyzed C–H amination and chelation-controlled reductions as key steps. In addition, demethyl analogs of conagenin were synthesized using similar procedures.
立体选择性合成了免疫调节剂(+)-刀豆蛋白。胺基和羧酸基团都是由市场上可买到的旋光性3-羟基-2-甲基丙酸甲酯制备的,其中使用了ho(II)催化的CH胺化反应和螯合控制的还原反应为关键步骤。另外,刀豆蛋白的脱甲基类似物使用相似的方法合成。