Synthesis, In Vitro Antitubercular Activity and 3D-QSAR of Novel Quinoxaline Derivatives
作者:Ayarivan Puratchikody、Ramalakshmi Natarajan、Mohanapriya Jayapal、Mukesh Doble
DOI:10.1111/j.1747-0285.2011.01246.x
日期:2011.12
Twenty new quinoxalines bearing azetidinone and thiazolidinone groups were synthesized by cyclocondensation of Schiff bases of quinoxaline‐2, 3‐dione and were characterized with several analytical tools. They were tested against Mycobacterium tuberculosis H37Rv at a concentration of 10 μg/mL by Microplate Alamar Blue Assay method. Quinoxaline derivatives with 2‐chloro, dimethylamino and nitro substitutions exhibited in vitro activity, comparable to that of the drug, isoniazid. Three‐dimensional quantitative structure–activity relationship studies indicated that electrostatic and steric field descriptors could explain the observed activity. The developed model fits the data well and has good predictive capability (r2 = 0.81, q2 = 0.71, F = 27.06, r2_pred = 0.84, r2 m = 0.84, r2 BS = 0.80). Electronegative groups play an important role in the antitubercular activity.