State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
Molecules. 2013 May 3;18(5):5142-54. doi: 10.3390/molecules18055142.
An efficient synthesis of novel dispirooxindoles has been achieved through three-component 1,3-dipolar cycloaddition of azomethine ylides generated in situ by the decarboxylative condensation of isatin and an α-amino acid with the dipolarophile 5-benzylideneimidazolidine-2,4-dione. The improved procedure features mild reaction conditions, high yields, high diastereoselectivities, a one-pot procedure and operational simplicity.
通过靛红与α-氨基酸的脱羧缩合原位生成亚胺叶立德与偶极子 5-亚苄基咪唑烷-2,4-二酮的三组分 1,3-偶极环加成反应,高效合成了新型双螺环氧化吲哚。改进后的方法具有反应条件温和、产率高、非对映选择性高、一锅法和操作简单的特点。