Construction of Druglike 2-Amido Benzo[<i>d</i>]imidazole Analogues via Desulfurative Cyclization of Thiourea Intermediate Resin on Solid-Phase
作者:Hyun-Jeong Ryu、Seung-Ju Yang、Gee-Hyung Lee、Young-Dae Gong
DOI:10.1021/acscombsci.8b00004
日期:2018.5.14
A 2-amido benzo[d]imidazole library has been constructed by solid-phase synthesis. The key step of this solid-phase synthesis involves the preparation of polymer-bound 2-amino benzo[d]imidazole resin through desulfurative cyclization of thiourea resin using 2-chloro-1,3-dimethylimidazolinium chloride and N,N-diisopropylethylamine in dichloromethane (DCM), and the resin is then functionalized by acylation
通过固相合成已经构建了2-氨基苯并[ d ]咪唑文库。该固相合成的关键步骤涉及使用2-氯-1,3-二甲基咪唑啉鎓氯化物和N,N-二异丙基乙胺的二氯甲烷溶液,通过硫脲树脂的脱硫环化反应,制备与聚合物结合的2-氨基苯并[ d ]咪唑树脂。 (DCM),然后通过在2-胺位置上进行酰化将树脂官能化,得到2-酰胺基苯并[ d ]咪唑树脂。在具有p -I或m -NO 2的2-酰胺基苯并[ d ]咪唑树脂的情况下,通过Suzuki / Sonogashira-偶联将树脂进一步官能化(p -I)还原为伯胺(m -NO 2),然后进行酰化。最后,通过用三氟乙酸和DCM的混合物处理,将官能化的2-酰胺基-苯并[ d ]咪唑树脂从聚合物载体上裂解下来。结果,我们以高收率和良好的纯度获得了2-酰胺基苯并[ d ]咪唑类似物。