The highly enantioselective preparation of drug-like oxa-spirocyclic indanone derivatives employing a multicomponent cascade reaction is described. This approach utilizes an organocatalytic Michael reaction followed by a Henry–acetalization sequence that yields the desired chiral spirocyclic backbone, bearing four contiguous stereogenic centers and multiple functional groups, in good yields and high
描述了使用多组分级联反应制备类药物氧杂-螺环
茚满酮衍
生物的高度对映选择性制备。这种方法利用有机催化迈克尔反应,然后是亨利
缩醛化序列,产生所需的手性螺环骨架,带有四个连续的立体中心和多个官能团,具有良好的产率和高立体选择性(高达 99% ee 和 95:5 dr) .