作者:Petr Kočalka、Radek Pohl、Dominik Rejman、Ivan Rosenberg
DOI:10.1016/j.tet.2006.03.078
日期:2006.6
The synthesis of novel 3-pyrrolidinyl derivatives of nucleobases is described. Starting from malic acid, we improved the synthesis of both racemic and optically active N-benzyl-3-hydroxypyrrolidine-2,5-diones, which were transformed in four steps into N-tert-butyloxycarbonyl-3-mesyloxypyrrolidines, the key synthons for the alkylation of purine and pyrimidine nucleobases. Alkylations of cesium salts
描述了核碱基的新型3-吡咯烷基衍生物的合成。从苹果酸开始,我们改善了外消旋和光学活性的合成Ñ -苄基-3-羟基吡咯烷-2,5-二酮类,其中转化在四个步骤进入ñ -叔丁氧基羰基-3- mesyloxypyrrolidines,关键合成子为嘌呤和嘧啶核碱基的烷基化。嘌呤和嘧啶与钠盐的铯盐的烷基化ñ -叔丁氧基羰基-3- mesyloxypyrrolidines顺利进行,得到9-取代的嘌呤衍生物和1-取代的嘧啶衍生物的中等产率的高收率。使用(S)-N - tert-丁氧基羰基-3-甲氧基苯并吡咯烷作为合成两个对映体N -Boc-3-吡咯烷基亚基腺嘌呤的相同中间体,并考虑到产品的手性HPLC分析所获得的结果,我们证明了甲磺酰基基团的亲核取代反应是通过转化和不保留配置。测试了制备的化合物的细胞抑制和抗病毒特性,但未发现明显的活性。