An improved synthesis of piperazino-piperidine based CCR5 antagonists with flexible variation on pharmacophore sites
作者:Xiao-Hua Jiang、Yan-Li Song、Dong-Zhi Feng、Ya-Qiu Long
DOI:10.1016/j.tet.2004.11.057
日期:2005.1
improved and efficient synthetic route towards piperidino-piperazine based CCR5 antagonists was developed. The new approach was flexible for introducing various substituents in the pharmacophore sites via Grignard reagent addition and reductive amination. l-Amino acids were used as a chiral pool to introduce and then induce the desired stereochemistries, meanwhile rendering the variable substitution. The efficient
开发了一种改进的,有效的合成基于哌啶子基哌嗪的CCR5拮抗剂的合成途径。这种新方法可灵活地通过格氏试剂添加和还原胺化在药效基团位点引入各种取代基。将1-氨基酸用作手性池,以引入并随后诱导所需的立体化学,同时进行可变取代。N 1的关键组成部分以高度收敛的方式实现了哌嗪子素-哌啶核的有效构建。-Boc-4-取代基-4-氨基哌啶,在简洁的合成路线和环境友好的试剂方面,比之前所述的逐步合成方法具有明显优势,在逐步合成方法中,改良的Strecker反应与高毒性试剂(例如二乙基氰化铝)有关。