The application discloses
flavonoid compounds with neuroprotective activity, and a preparation method and application thereof, and particularly relates to four specific
ester derivatives of
formononetin, namely, an allyl
carbonate derivative (
compound A), a 2-chlorobenzoic acid ester derivative (compound B), a
cinnamic acid ester derivative (
compound C), and a
propionic acid ester derivative (compound D). The application significantly improves the defects of the parent compound, such as poor liposolubility, low blood-brain
barrier permeability and low
bioavailability, through specific ester group modification. Experiments show that the lipid-water partition coefficients and
bioavailability of the four types of derivatives are significantly improved compared with the parent compound. In addition, the four types of derivatives show better neuroprotective activity than the parent compound and a
positive control drug in Alzheimer's
disease and Parkinson's
disease models, and show a synergistic effect between the parent compound and the modification group. The application further provides a preparation method of the above compounds and application of the above compounds in preparation of drugs for treating neurodegenerative diseases.