从容易获得的取代的N-烯丙基-N-苄基苯胺开始,采用四步方案成功合成了一组新的功能化的二苯并[ c,f ]噻唑并[3,2- a ]氮杂s。标题化合物的合成是通过吗啡啶与巯基乙酸的环缩合完成的。通过在二氯甲烷中用氯铬酸吡啶鎓选择性氧化二氢吗啡啶来制备吗啡啶。通过酸催化取代的2-烯丙基-N-苄基苯胺的分子内Friedel-Crafts烷基化反应获得二氢吗啡啶,后者又由N-烯丙基-制备N-苄基苯胺通过芳香氨基-克莱森重排。还报告了通过高分辨率NMR对所有合成化合物的结构解析。 氨基克莱森重排-分子内Friedel-Crafts烷基化-2-烯丙基-N-苄基苯胺-二氢吗啡啶-二苯并[ c,f ]噻唑并[3,2- a ]氮杂
Synthesis, structural elucidation and in vitro antiparasitic activity against Trypanosoma cruzi and Leishmania chagasi parasites of novel tetrahydro-1-benzazepine derivatives
摘要:
Forty six new 1,4-epoxy-2-exo-aryl-and cis-2-aryl-4-hydroxytetrahydro-1-benzazepine derivatives were synthesized and fully characterized. All compounds were tested in vitro against both Trypanosoma cruzi and Leishmania chagasi parasites and also for cytotoxicity using Vero and THP-1 mammalian cell lines. Many of the evaluated compounds showed remarkable activity against the epimastigote and intracellular amastigote forms of T. cruzi, with IC50 values comparable with that of control drug nifurtimox, a nitrofuran derivative currently used in the treatment of Chagas' disease. Other derivatives were found to have good activity against L. chagasi promastigotes, with low toxicity against the mammalian cells, but neither of them was active on intracellular amastigotes of L. chagasi infecting THP-1 macrophages. (C) 2010 Elsevier Ltd. All rights reserved.