Stereocontrolled construction of the dihydrothiopyrano[2,3-b]indole skeleton via an organocatalyzed asymmetric cascade sulfa-Michael-aldol reaction
作者:Lulu Wu、Youming Wang、Zhenghong Zhou
DOI:10.1016/j.tetasy.2014.09.005
日期:2014.10
We have developed an organocatalyzed asymmetric cascade sulfa-Michael-aldol reaction between 2-mercaptoindole-3-carbaldehydes and enals, which provides efficient access to the stereocontrolled construction of dihydrothiopyrano[2,3-b]indole skeletons. Under the catalysis of chiral diphenylprolinol TMS ether, the reactions ran smoothly to give the corresponding synthetically useful and pharmaceutically
我们已经开发了2-巯基吲哚-3-甲醛和烯醛之间的有机催化的不对称级联磺胺-迈克尔-醛醇反应,它提供了对二氢硫代吡喃并[2,3- b ]吲哚骨架的立体控制结构的有效访问。在手性二苯基脯氨醇TMS醚的催化下,反应进行得很顺利,以高收率和ee的64-96%得到了相应的合成有用的和药学上有价值的二氢硫吡喃并[2,3- b ]吲哚。