Synthesis, analgesic, anti-inflammatory and antibacterial activities of some novel 2-butyl-3-substituted quinazolin-4-(3H)-ones.

A variety of novel 2-butyl-3-substituted quinazolin-4-(3H)-ones have been synthesized by reacting (2-butyl-4-oxo-3H-quinazolin-3-yl)dithiocarbamic acid methyl ester with a variety of amines; the starting material dithiocarbamate was synthesized from anthranilic acid. The title compounds were investigated for analgesic, anti-inflammatory and antibacterial activities. While the test compounds exhibited significant activity, compounds A1, A2, A3 and A4 showed more potent analgesic activity and compound A4 showed more potent anti-inflammatory activity than the reference diclofenac sodium.