Asymmetric synthesis of (R)-(+)-6-(1,4-dimethoxy-3-methyl-2-naphthyl)-6-(4-hydroxyphenyl)hexanoic acid as a key intermediate for a neurodegenerative disease agent
作者:Tomomi Ikemoto、Toshiaki Nagata、Mitsuhisa Yamano、Tatsuya Ito、Yukio Mizuno、Kiminori Tomimatsu
DOI:10.1016/j.tetlet.2004.08.045
日期:2004.10
An asymmetric synthesis of (R)-(+)-6-(1,4-dimethoxy-3-methyl-2-naphthyl)-6-(4-hydroxyphenyl)hexanoic acid 2 as a key intermediate for a neurodegenerative disease agent 1 has been developed. A key reaction was an asymmetric hydrogenation of hindered acrylic acid 13 catalyzed by the Rh-JOSIPHOS system in the presence of a base to afford a chiral acid up to 93% ee.
(R)-(+)-6-(1,4-二甲氧基-3-甲基-2-萘基)-6-(4-羟苯基)己酸2的不对称合成作为神经退行性疾病药物1的关键中间体已经被开发出来。关键反应是在碱的存在下,由Rh-JOSIPHOS系统催化的受阻丙烯酸13的不对称氢化,可提供高达93%ee的手性酸。