Forward- and reverse-synthesis of piperazinopiperidine amide analogs: a general access to structurally diverse 4-piperazinopiperidine-based CCR5 antagonists
作者:Dong-Zhi Feng、Yan-Li Song、Xiao-Hua Jiang、Li Chen、Ya-Qiu Long
DOI:10.1039/b707175b
日期:——
promising CCR5 antagonists. As an effective extension of a previously-reported methodology to synthesize such compounds, forward- and reverse-syntheses were successfully developed in which the convergent synthesis of the piperazinopiperidine nucleus, with a building block of 4-substituent-4-aminopiperidine, served as a common key step. The two-way approach affords a comprehensive access to the piperazinopiperidine
哌嗪基哌啶酰胺类似物是最有希望的CCR5拮抗剂。作为先前报道的合成这类化合物的方法的有效扩展,正向和反向合成成功开发,其中哌嗪子哌啶核的聚合合成以及4-取代基-4-氨基哌啶的组成部分可作为正向和反向合成。共同的关键步骤。双向方法可提供对哌嗪子哌啶模板化文库的全面访问,但药效团位点有所不同。因此,就哌嗪环上取代基的结构和构型,对合成的哌嗪子哌啶基CCR5拮抗剂进行了SAR研究。苄基取代基的S-构型对于CCR5结合至关重要,哌嗪环2位上的庞大或芳基取代基对活性不利。通过使用正向合成方法,可以方便地以优异的产率方便地合成基于手性哌嗪的CCR5拮抗剂系列中的最佳化合物Sch-D(Vicriviroc)。