[(1,5-环辛二烯)(NHC)RhCl)](4 a – c),[(对苯甲基)(NHC)RuCl 2)型萘二甲酰亚胺基N杂环卡宾(NHC)络合物(5 a – c)和[(NHC)CuBr](6 a – c)被合成并作为靶向DNA的抗增殖剂进行了研究。细胞毒性作用主要由萘嵌二酰亚胺结构驱动,萘嵌二苯结构是DNA插入部分。关于金属中心,铑配合物具有最高的活性,而钌衍生物的细胞毒活性则明显较低。选定配合物4 b的NHC配体的稳定配位确认了溶液中的5b和5b,并通过UV / Vis光谱,质谱和圆二色性研究了它们的DNA结合特性。高DNA结合常数表明,对于所有选定的基于萘二甲酰亚胺的复合物,DNA均能稳定地嵌入到DNA中。在铑配合物4b的情况下观察到特别有效的结合。对4b的更详细的生物学研究表明,它对多药耐药的Nalm-6细胞具有积极的作用,并证实了线粒体途径在4b诱导的细胞凋亡中具有重要作用。
Palladium(II)/N-Heterocyclic Carbene-Catalyzed Regioselective Heteroannulation of Tertiary Propargyl Alcohols and<i>o</i>-Haloanilines to form 2-Alkenylindoles
Monometallic and bimetallic palladium(II)/N‐heterocyclic carbene complexes appended with naphthalimide or bisnaphthalimide moieties were designed, synthesized, and characterized. Employment of these catalysts brings about the step‐economic and regioselective heteroannulation of tertiary propargyl alcohols with o‐haloanilines resulting in biologically and pharmaceutically relevant 2‐alkenylindoles. Basis