Stereoselective Synthesis oftrans-threo-trans-Oligopyrrolidines: Potential Agents for RNA Cleavage
作者:Hans-Dieter Arndt、Rüdiger Welz、Sabine Müller、Burkhart Ziemer、Ulrich Koert
DOI:10.1002/chem.200400181
日期:2004.8.20
The 2,5-trans-substituted oligopyrrolidines constitute a promising class of novel RNA-binding agents as well as potential building blocks for artificial anion channels. A convergent synthesis of terpyrrolidine 1 and pyrrolidino-THF-pyrrolidine 2 is reported, relying upon convergent coupling of 2,5-trans-pyrrolidinecarboxaldehydes through bridging alkyne units under Felkin-Anh control and subsequent
2,5-反式取代的低聚吡咯烷酮构成一类有前途的新型RNA结合剂以及潜在的人造阴离子通道的组成部分。据报道,通过在Felkin-Anh控制下通过桥接炔基单元并随后封闭中心环,2,5-反式-吡咯烷甲醛的收敛偶联,可以实现对吡咯烷1和吡咯烷基-THF-吡咯烷2的收敛合成。完全脱保护后,以优异的产率和纯度分离出游离的多胺产物。特吡咯烷和吡咯烷基-THF-吡咯烷的晶体结构分析证明了它们的螺旋特权构象。然后筛选化合物的RNA切割活性。与仅有的弱活性简单多胺不同,