SYNTHESIS AND UTILITY OF NEW POLYCYCLIC COMPOUNDS AS POTENTIAL ANTIMICROBIALS BASED ON CHROMENE MOIETY

MAHMOUD N. ABDELAZIZ; EMAN S. ZARIE; ALAADIN E. SARHAN

doi:10.22159/ijpps.2019v11i9.34338

Authors

MAHMOUD N. ABDELAZIZ Faculty of Science (Girls), Chemistry Department, Al-Azhar University, Nasr City, Cairo, Egypt
EMAN S. ZARIE Nanochemistry and Nanoengineering, School of Chemical Engineering, Department of Chemistry and Materials Science, Aalto University, Kemistintie 1, 00076 Aalto, Finland, Department of Therapeutical Chemistry, Pharmaceutical Division, National Research Centre, Dokki 12311, Giza, Egypt
ALAADIN E. SARHAN Department of Therapeutical Chemistry, Pharmaceutical Division, National Research Centre, Dokki 12311, Giza, Egypt

DOI:

https://doi.org/10.22159/ijpps.2019v11i9.34338

Keywords:

Chromene-3-carbonitrile, Chromenes, Polycyclic compounds, Pyrimidines, Fused ring, Antimicrobial activity

Abstract

Objective: The present research aims to synthesize some new polycyclic compounds including chromene moiety and study their antimicrobial activity.

Methods: Several new polycyclic systems including chromene scaffold incorporated with pyridine, pyrimidine, imidazopyrimidine, and imidazodiazocine were achieved via condensation reaction of chromene derivative under the proper condition with various reagents namely; cyanothioacetamide, phenyl isothiocyanate, malononitrile, carbon disulfide, benzaldehyde, triethyl orthoformate, and 1,4-dichlorobutane. Moreover, a chlorodiazenyl chromene derivative was reacted with some substances possessing active–CH₂-bridge such as ethyl cyanoacetate and malononitrile to end up with hydrazono compounds. Such compounds were eventually cyclized with hydrazine hydrate to form pyrazole and oxopyrazole derivatives. Moreover, compound 1 was treated with benzoyl acetone, and then followed by cyclization with malononitrile to provide the corresponding 2-amino14-(4-methoxyphenyl)-4-methy-5-phenyl-14H-benzo[5,6] chromeno [2,3H][1,6]naphthyridine-3-carbonitrile (20).

Results: The results of the antimicrobial screening in vitro revealed that the inhibition zone (mm) of the synthesized compounds 1-3, 5 and 8 implied their optimum antibacterial activity, while the compounds 4, 6 and 9-13, 15 showed a moderate to weak antibacterial activity against multiple species of B. subtilis, S. aureus, E. coli and P. aeruginosa. In contrast, the compounds 1, 6, 11, 15 showed high antifungal activities against different species of A. flavinand C. albicans, while the other compounds exhibit a moderate to poor antifungal activity.

Conclusion: It is remarkable that a series of chromene derivatives synthesized by a simple and available method leads to a molecule of promising antimicrobial activity. Further research is recommended to approve the importance of polycyclic systems for various applications.