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Letters in Organic Chemistry

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ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

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Research Article

Synthesis of Some New Polycyclic Heterocyclic Compounds of Anticipated Biological Activity

Author(s): Taghreed A. Alsufyani, Hosam A. Saad* and Asmaa A.A. Al-otaibi

Volume 18, Issue 3, 2021

Published on: 07 February, 2020

Page: [240 - 249] Pages: 10

DOI: 10.2174/1570178617666200207105344

Price: $65

Abstract

Novel polyheterocyclic nitrogen systems such as 2-amino-1H-pyrazolo[5',1':3,4][1,2,4]- triazino[5,6-b]indole-3-carbonitrile 2, which has been synthesized for the first time in the present work, is considered as starting material for the synthesis of more novel polyheterocyclic systems with five fused rings and sometimes eight fused rings via heterocyclization with α,β-bifunctional reagents under different conditions. The formed structures of the products were established from their correct elemental analysis and spectral data. Some of the compounds were evaluated for their antimicrobial activity using the Agar Well Diffusion method. Compounds 2, 4, 5, 6, 8 were found to be biologically active (Supplementary information).

Keywords: Polyheterocyclic nitrogen, triazino[5, 6-b]indole-3-carbonitrile, Pyrazolo[5', 1':3, 4][1, 2, 4]triazino[5, 6-b]indole, biological activity.

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