DNA-binding studies and biological activities of new nitrosubstituted acyl thioureas
作者:Shaista Tahir、Amin Badshah、Raja Azadar Hussain、Muhammad Nawaz Tahir、Saira Tabassum、Jahangir Ali Patujo、Muhammad Khawar Rauf
DOI:10.1016/j.molstruc.2015.06.024
日期:2015.11
Four new nitrosubstituted acylthioureas i.e. 1-acetyl-3-(4-nitrophenyl)thiourea (TU1), 1-acety1-3-(2-methyl-4-nitrophenyl)thiourea (TU2), 1-acetyl-3-(2-methoxy-4-nitrophenyl)thiourea (TU3) and 1-acety1-3-(4-chloro-3-nitrophenyl)thiourea (TU4) have been synthesized and characterized (by C-13 and H-1 nuclear magnetic resonance, Fourier transform infrared spectroscopy and single crystal X-ray diffraction). As a preliminary investigation of the anti-cancer potencies of the said compounds, DNA interaction studies have been carried out using cyclic voltammetry and UV-vis spectroscopy along with verification from computational studies. The drug-DNA binding constants are found to be in the order, K-TU3 9.04 x 10(6) M-1 > K-TU4 8.57 x 10(6) M-1 > K-TU2 6.05 x 10(6) M-1 > K-TU1 1.16 x 10(6) M-1. Furthermore, the antioxidant, cytotoxic, antibacterial and antifungal activities have been carried out against DPPH (1,1-diphenyl-2-dipicrylhydrazyl), Brine shrimp eggs, gram positive (Micrococcus luteus, Staphylococcus aureus) and gram negative (Bordetella bronchiseptica, Salmonella typhimurium, Enterobacter aerogens) and fungal cultures (Aspergillus fumigatus, Mucor species, Aspergillus niger, Aspergillus flavus) respectively. (C) 2015 Elsevier B.V. All rights reserved.