A New Series of Bisbenzimidazole Derivatives: Synthesis, Antitumor Activity and Low Toxicity on PBMC
摘要:
Herein, a new series of bis-benzimidazole derivatives were designed and synthesized. Most of these new compounds showed significant in vitro anticancer activity when compared to Hoechst 33258 and 5-FU. Among them, the most potent compound 8 had the IC50 values of 0.78 mu M for U937 tumor cell line, 5.62 mu M for HL60 tumor cell line and 6.97 mu M for Hela tumor cell line. Molecular modeling, fluorescence and viscosimetry study showed that compound 8 could bind into the minor groove of DNA. Subsequent toxicity study on human peripheral blood mononuclear cells (PBMC), shows that compound 8 exhibited less toxicity than paclitaxel and 5-FU.
摘要 独特的温度、溶剂和 pH 值驱动花瓶 在喹喔啉空腔中 达到 风筝平衡,允许客人可逆地吸收和释放。然而,与这种构象转换相关的腔呼吸会降低复合强度。已经为腔体刚性提出了有限数量的解决方案,使用 H 键合、金属配位或共价连接。在这里,我们报告了基于喹喔啉的空腔篮的合成和结构表征,它们呈现了连接在一起的两个远端喹喔啉壁。篮子 A 和 B 是通过使用两种不同的二喹喔啉部分从 AC 二喹喔啉桥连的空腔开始的桥连反应获得的。在这两种情况下,都获得了两种异构体:异构体 C 2,连接单元穿过腔口,异构体C s,具有侧向的连接体。通过1 H NMR分析鉴定异构体 。在篮子 AC s的情况下,解析的分子结构证实 了篮子的 C s对称性。