Synthesis, characterization, and antimicrobial activity of novel hydrazone-bearing tricyclic quinazolines
- 24 Downloads
A series of novel substituted hydrazone-bearing (unsymmetrical azines, RR1C=N–N=CR2R3) tricyclic quinazoline derivatives are reported. All novel compounds were characterized by 1H, 13C nuclear magnetic resonance (NMR), and Fourier-transform infrared (FT-IR) analyses. An important intermediate (E/Z)-hydrazono-1,2,3,9-tetrahydropyrrolo[2,1-b]quinazoline (8) was synthesized from tricyclic quinazoline-4-thione 7 using 80 % of hydrazine hydrate. In addition, the antimicrobial activity of all synthesized novel compounds against three types of pathogenic microorganism was tested, revealing that some compounds showed satisfactory good activity and could serve as lead compounds for further drug discovery and development.
KeywordsQuinazoline Quinazoline-thione Hydrazone Thioamide Antimicrobial activity
This work was funded by grants from the Chinese Academy of Sciences President’s International Fellowship Initiative (K. Bozorov, grant no. 2019PT054), the Central Asia Drug Research and Development Center of Chinese Academy of Sciences, and the Academy of Sciences of the Republic of Uzbekistan (grant no. VA-FA-F-7-006).
- 11.V. Alapati, M.N. Noolvi, S.N. Manjula, K.J. Pallavi, H.M. Patel, B.S. Tippeswamy, S.V. Satyanarayana, Eur. Rev. Med. Pharmacol. Sci. 16, 1753 (2012)Google Scholar
- 25.C.L. Ventola, Pharmacol. Ther. 40, 277 (2015)Google Scholar