作者:Yujiro Hayashi、Shin Ogasawara
DOI:10.1021/acs.orglett.6b01595
日期:2016.7.15
A time economical 60 min total synthesis of (−)-oseltamivir was accomplished in a single reaction vessel over five steps. One of the key issues is reduction in the number of steps by eliminating lengthy reaction steps with substitution of a rapid epimerization step. A catalytic system consisting of three reagents, namely, diphenylprolinol silyl ether, thiourea, and acid, was developed for a rapid asymmetric
在一个单一的反应容器中,通过五个步骤完成了经济高效的60分钟(-)-奥司他韦的总合成。关键问题之一是通过省去冗长的反应步骤而代之以快速差向异构化步骤,从而减少了步骤数。开发了由三种试剂组成的催化体系,即二苯基脯氨醇甲硅烷基醚,硫脲和酸,可用于快速非对称迈克尔反应,并具有出色的非对映和对映选择性。所有反应不仅在产率和选择性上而且在反应时间上都得到了优化。