Solution phase synthesis of a spiro[pyrrolidine-2,3′-oxindole] library via a three component 1,3-dipolar cycloaddition reaction
作者:Demosthenes Fokas、William J. Ryan、David S. Casebier、David L. Coffen
DOI:10.1016/s0040-4039(98)00234-2
日期:1998.4
A combinatorial library of 26,500 spiro[pyrrolidine-2,3′-oxindoles] was prepared in a single-compound format by a facile intermolecular 1,3-dipolar cycloaddition. An azomethine ylide, generated by the decarboxylative condensation of an isatin 1 with an α-amino acid 2, was trapped by a trans-chalcone3 to afford heterocycles of the general structure 4. The regio- and stereochemistry of a representative
通过容易的分子间1,3-偶极环加成,以单化合物形式制备了26,500个螺[吡咯烷-2,3'-羟吲哚]的组合文库。由靛红1与α-氨基酸2的脱羧缩合生成的甲亚胺叶立德被反式查尔酮3捕获,从而得到具有一般结构4的杂环。代表性产品的区域和立体化学由单晶X射线结构确定。