Synthesis of Novel Pyrazolines, Their Boron-Fluorine Complexes, and Investigation of Antibacterial, Antioxidant, and Enzyme Inhibition Activities.

New 3,5-disubstituted-2-pyrazoline derivatives (4-6), their boron-fluorine complexes (boron (3-(2'-aminophenyl),5-(2'-/3'-/4'-pyridyl)pyrazoline, BOAPPY) (7-9) and boron 1,2'-diazaflavone complex (BODAF) (11) were synthesized starting from azachalcones (1-3) to diazaflavone (10), respectively. Biological evaluation of compounds 4-9 and 11 showed remarkable antioxidant, antibacterial, and acetylcholinesterase and tyrosinase enzyme inhibition activities. All newly synthesized compounds 4-9 and 11 showed respectable antibacterial effect with minimum inhibitory concentrations in the range of 4.7-150 µg/mL.