Antitermite activity of 7-alkoxycoumarins and related analogs against Coptotermes formosanus Shiraki

► 23 kinds of 7-alkoxycoumarins were synthesized. ► 7-Cyclohexyloxycoumarin exhibited the highest termiticidal activity. ► 7-Ethoxycoumarin demonstrated the highest antifeedant activity. ► Cyclohexyloxy and aryloxy groups at C-7 of coumarin skeleton was important.