Synthesis and β-glucuronidase inhibitory activity of 2-arylquinazolin-4(3H)-ones
作者:Khalid Mohammed Khan、Syed Muhammad Saad、Nimra Naveed Shaikh、Shafqat Hussain、Muhammad Imran Fakhri、Shahnaz Perveen、Muhammad Taha、Muhammad Iqbal Choudhary
DOI:10.1016/j.bmc.2014.04.039
日期:2014.7
2-Arylquinazolin-4(3H)-ones 1–25 were synthesized by reacting anthranilamide with various benzaldehydes using CuCl2·2H2O as a catalyst in ethanol under reflux. Synthetic 2-arylquinazolin-4(3H)-ones 1–25 were evaluated for their β-glucuronidase inhibitory potential. A trend of inhibition IC50 against the enzyme in the range of 0.6–198.2 μM, was observed and compared with the standard d-saccharic acid
Antioxidant and ROS Inhibitory Activities of Heterocyclic 2-Aryl-4(3H)-quinazolinone Derivatives
作者:Shahida Perveen、Syed Muhammad Saad、Khalid Mohammed Khan、Muhammad Iqbal Choudhary
DOI:10.2174/1570180818666210427092319
日期:2021.8
Most of the 2-aryl-4(3H)-quinazolinone derivatives showed potent antioxidant activities in superoxide anion radical scavenging assay with IC50 value ranging between 0.57 μM - 48.93 μM, as compared to positive control quercetin dihydrate (IC50 = 94.1 ± 1.1 μM ). Compounds 5, 6, and 14 showed excellent activity in DPPH assay. Compounds 5-8, 12-15, 17, and 20 showed promising activities in the ROS inhibition
2-Arylquinazolin-4(3H)-ones: A novel class of thymidine phosphorylase inhibitors
作者:Sumaira Javaid、Syed Muhammad Saad、Shahnaz Perveen、Khalid Mohammed Khan、M. Iqbal Choudhary
DOI:10.1016/j.bioorg.2015.10.006
日期:2015.12
Thymidine phosphorylase (TP) over expression plays an important role in several pathological conditions, such as rheumatoid arthritis, chronic inflammatory diseases, psoriasis, and tumor angiogenesis. In this regard, a series of twenty-five 2-arylquinazolin-4(3H)-one derivatives 1-25 were evaluated for thymidine phosphorylase inhibitory activity. Six compounds 5, 6, 20, 2, 23, and 3 were found to be active against thymidine phosphorylase enzyme with IC50 values in the range of 42.9-294.6 mu M. 7-Deazaxanthine (IC50 = 41.0 +/- 1.63 mu M) was used as a standard inhibitor. Compound 5 showed a significant activity (IC50 = 42.9 +/- 1.0 mu M), comparable to the standard. The enzyme kinetic studies on the most active compounds 5, 6, and 20 were performed for the determination of their modes of inhibition, and dissociation constants K-i. All active compounds were found to be largely non-cytotoxic against the mouse fibroblast 3T3 cell line. This study identifies a novel class of thymidine phosphorylase inhibitors which may be further investigated as leads to develop therapeutic agents. (C) 2015 Elsevier Inc. All rights reserved.
Perveen, Shama; Saad, Syed Muhammad; Perveen, Shahnaz, Journal of the Chemical Society of Pakistan, 2016, vol. 38, # 2, p. 352 - 357
作者:Perveen, Shama、Saad, Syed Muhammad、Perveen, Shahnaz、Hameed, Abdul、Alam, Muhammad Tanveer、Khan, Khalid Mohammed、Choudhary, M. Iqbal