作者:J. S. Yadav、V. Rajender、Y. Gangadhara Rao
DOI:10.1021/ol9026842
日期:2010.1.15
A convergent approach to the total synthesis of pteridic acid A, having potent plant growth regulator activity, is described. Key steps include the desymmetrization of bicyclic olefin with Brown’s chiral hydroboration, acid-mediated spiroketalization, and zirconium-catalyzed ethylmagnesation protocol to install the ethyl stereocenter at C14.
描述了一种具有有效的植物生长调节剂活性的总合成蝶呤酸A的收敛方法。关键步骤包括用Brown手性硼氢化法对双环烯烃进行脱对称化,酸介导的螺缩酮化反应和锆催化的乙基氧化反应方案,以将乙基立体中心安装在C14上。