Benzopyran compound as well as preparation method and application thereof

The invention discloses a benzopyran compound as well as a preparation method and an application thereof. The benzopyran compound has variable degrees of oxidative stress injury protective effects, can effectively reduce membrane potential reducing amplitude caused by H2O2-induced human umbilical vein endothelial cell damage and is a potential heart and cerebral vessel protection drug; and meanwhile, the benzopyran compound is reasonable in design, operation is easy, and a new active ingredient is provided for drugs used for treating the heart and cerebral vessel diseases.