One-pot double intramolecular homolytic aromatic substitution routes to dialicyclic ring fused imidazobenzimidazolequinones and preliminary analysis of anticancer activity
作者:Vincent Fagan、Sarah Bonham、Michael P. Carty、Fawaz Aldabbagh
DOI:10.1039/c003511d
日期:——
Bu3SnH/1,1′-azobis(cyclohexanecarbonitrile) (ACN)-mediated five, six, and seven-membered double alkyl radical cyclizations onto imidazo[5,4-f]benzimidazole and imidazo[4,5-f]benzimidazole are described. The quinone derivatives evaluated show selective toxicity towards human cervical (HeLa) and prostate (DU145) cancer cell lines (with negligible toxicity towards a normal human cell line, GM00637). Only the Fremy oxidation of the 6-aminoimidazo[5,4-f]benzimidazole gave iminoquinone, which showed high specificity towards the prostate cancer cell line (DU145).
介绍了 Bu3SnH/1,1′-偶氮双(环己烷腈)(ACN)介导的咪唑并[5,4-f]苯并咪唑和咪唑并[4,5-f]苯并咪唑的五元、六元和七元双烷基环化反应。所评估的醌衍生物对人类宫颈癌(HeLa)和前列腺癌(DU145)细胞系具有选择性毒性(对正常人细胞系 GM00637 的毒性可忽略不计)。只有 6-氨基咪唑并[5,4-f]苯并咪唑的 Fremy 氧化反应产生了亚氨基醌,它对前列腺癌细胞株(DU145)具有高度特异性。