Novel compounds and methods related to the activation of the TrkB receptor are provided. The methods include administering in vivo or in vitro a therapeutically effective amount of 7,8-dihydroxyflavone or derivative thereof. Specifically, methods and compounds for the treatment of disorders including neurologic disorders, neuropsychiatric disorders, and metabolic disorders (e.g., obesity) are provided. For example, a first method is provided of treating or reducing the risk of depression, anxiety, or obesity in a subject, which includes selecting a subject with or at risk of developing depression, anxiety, or obesity, and administering to the subject a therapeutically effective amount of 7,8-dihydroxyflavone or a derivative thereof. A further method of promoting neuroprotection in a subject also is provided, which includes selecting a subject in need of neuroprotection, and administering to the subject a therapeutically effective amount of 7,8-dihydroxyflavone or a derivative thereof.
