the oxidant, cholinesterase, and carbonic anhydrase inhibitions of essential oils and their major compounds of leiotulus dasyanthus and molecular docking studies of -pinene and -3-carene were evaluated in this study. phenolic constituents and antioxidant activity of samples were determined by folin-ciocalteu's, dpph, and tba processes. cholinesterase inhibition effect was evaluated through ellman's method. gc-fid and gc/ms were used for analysing of essential oils. the root oil got the highest total phenolic content (898.87 mg/g). the utmost activity was shown flower oil (29.31 g/ml) in the dpph test. the root oil indicated considerable inhibition towards acetylcholinesterase (21.92%) and butyrylcholinesterase (91.33%) enzymes, respectively. -pinene and -3-carene indicated high acetylcholinesterase inhibitory activity (66.44 and 48.71%, respectively). cytosolic hca i and ii isoenzymes were influentially inhibited by flower and aerial part oils with 1.694 and 1.677 um ic50 values, respectively. 1-dodecanol (7.8%); -pinene (63.3%), -pinene (20.5%); octyl acetate (14.7%); hexyl octanoate (55.1%) were characterized as principle compounds of aerial parts, roots, flowers, and fruits respectively.