JPH0224828B

The invention relates to 3-methylflavone derivatives represented by the general formula and salts thereof: …… as well as manufacture methods therefor and pharmaceutical agents containing them as main ingredient(s) wherein R , R and R are same or different and are hydrogen, halogen, lower alkyl with one to ten main chain carbons, or lower alkoxy with one to four main chain carbons, R is hydroxyl, lower alkoxy with one to three main chain carbons, hydroxyalkyloxy with one to three main chain carbons or …… (where R is hydrogen or lower alkyl with one to seven main chain carbons, R is lower alkyl with one to seven main chain carbons,or cyclo alkyl with five to seven members, the case where R and R are combined forming a five to seven membered ring is included.