BENZOXAZOLE DERIVATIVES AND MEDICAMENTS COMPRISING SAID DERIVATIVES AS ACTIVE INGREDIENT

摘要

Compounds represented by general formula (1) or salts thereof which are usef ul as the active ingredient of drugs for preventing and/or treating irritable bowel syndrome, systemic functional disorder of digestive tract or diarrhea, wherein R1 represents halogeno; R2 represents hydrogen or lower alkyl; and R 3 represents hydrogen, lower alkyl, lower alkoxy, hydroxy(lower alkyl), haloge no or amino optionally having a substituent selected from the group consisting of lower alkyl, lower alkenyl, lower alkylcarbony and amino-protective groups.< /SDOAB>