Synthesis and Properties of Novel Biologically Interesting Polycyclic 1,3,4-Oxadiazoles Containing Acridine/Acridone Moieties
作者:Ján Imrich、Zdenka Fröhlichová、Jana Tomaščiková、Pavol Kristian、Ivan Danihel、Stanislav Böhm、Danica Sabolová、Mária Kožurková、Karel D. Klika
DOI:10.3987/com-08-s(f)80
日期:——
A series of polycyclic 1,3,4-oxadiazoles bearing acridine and acridone pharmacophores were synthesized as potential noncovalent DNA-binding and antitumor agents. The synthesis of oxadiazoles with acridone moiety was performed exploring oxidative cyclization of corresponding aldimines via bromine and the acridine derivatives by cyclization of acylthiosemicarbazides with mercuric oxide. The spectroscopic properties of the compounds in the case of acridonoxadiazoles showed an efficient binding activity to DNA (K = 5.3-9.2 x 10(4) M-1), whereas the acridine analogues are suitable as biomarkers. The structure of compounds were characterized by spectral methods (UV-vis, IR, H-1, C-13, and 2D NMR) and quantum-chemical calculations (DFT, ZINDO).