Abstract: Synthesis of 2-(ω-chloroacetonyl)-3-substituted-phenyl-6-halo/6, 8- dihaloquinazolin-4 (3H)-ones 6-10, 2-(ω-hydrazinoacetonyl)-3-substituted-phenyl-6-halo/6, 8-dihaloquinazolin-4 (3H) ones 11-15 and 1'-[3H-3-substituted-phenyl-4-oxo-6-halo/6, 8- dihaloquinazolin-2-acetonyl]-3׳-aryl-5'-(2-substituted-indol-3-yl)-Δ 2-pyrazolines 16-30 have been described. All the compounds have been tested in vivo for their anti-inflammatory, ...