Zwitterionic biphenyl quinone methides in photodehydration reactions of 3-hydroxybiphenyl derivatives: laser flash photolysis and antiproliferation study
作者:Nikola Basarić、Nikola Cindro、Damir Bobinac、Lidija Uzelac、Kata Mlinarić-Majerski、Marijeta Kralj、Peter Wan
DOI:10.1039/c1pp05338h
日期:2012.12
ethanolamine) converting them in high quantum yields to the corresponding adducts and photosolvolysis products (for photomethanolysis Φ ∼ 0.1–0.5). Zwitterions 20 and 21 were characterized by laser flashphotolysis in CH3CN–H2O (τ∼7.5 and 25 μs, respectively) and the associated quenching rate constants with nucleophiles azide and ethanolamine determined. In vitro studies of antiproliferative activity of
groups of phenols/naphthols (42 compounds in total) were synthesized and screened against Gram-positive Staphylococcus aureus and Bacillus subtilis , Gram-negative Escherichia coli and Klebsiella pneumoniae , and the fungus Candida albicans . Whereas compounds were found inactive against Gram-negative bacteria, potent activities against Gram-positive bacteria were observed. The activities correlate