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E-Journal of Chemistry
Volume 5, S2, Pages 1123-1132

In Vitro Antioxidant Activity of Dibenz[b,f]azepine and its Analogues

H. Vijay Kumar, C. R. Gnanendra, Nagaraja Naik, and D. Channe Gowda

Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore-570 006, Karnataka, India

Received 31 March 2008; Accepted 20 May 2008

Copyright © 2008 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Dibenz[b,f]azepine and its five derivatives bearing different functional groups were synthesized by known methods. The compounds thus synthesized were evaluated for antioxidant potential through different in vitro models such as (DPPH) free radical scavenging activity, ß-carotene-linoleic acid model system, reducing power assay and phosphomolybdenum method. Under our experimental condition among the synthesized compounds dibenz[b,f]azepine (a) and 10-methoxy-5H-dibenz[b,f]azepine (d) exhibited potent antioxidant activity in concentration dependent manner in all the above four methods. Butylated hydroxyl anisole (BHA) and ascorbic acid (AA) were used as the reference antioxidant compounds. The most active compounds like dibenz[b,f]azepine and its methoxy group substituent have shown more promising antioxidant and radical scavengers compared to the standards like BHA and ascorbic acid. It is conceivable from the studies that the tricyclic amines, i.e. dibenz[b, f]azepine and some of its derivatives are effective in their antioxidant activity properties.