The invention belongs to the technical field of medicines, and particularly relates to an N-propyl-4-phenylindole derivative as well as a preparation method and application thereof. The structure of the N-propyl-4-phenylindole derivative is as shown in the specification. The compound takes an indole ring as a parent
nucleus, a phenyl
substituent is introduced to the fourth site of the parent
nucleus, a flexible n-propyl connecting chain is connected to the first site of the parent
nucleus, the hydrophobic interaction with a
receptor is enhanced through 4-phenyl, the overall physicochemical properties of molecules are adjusted, diversified alkaline amino fragments are flexibly connected through an N-propyl chain, and the compound is obtained. And the N-propyl-4-phenylindole derivative is obtained. Through the unique structure, strong H3
receptor antagonistic activity and anticonvulsion effect are achieved, and meanwhile, the compound has good safety and
central nervous system penetrability and is expected to be developed into a new generation of high-efficiency and low-
toxicity antiepileptic drug.