abstract |
(57) [Summary] [Structure] Formula: [Chemical Formula 1] (In the formula, R 1 is an amidated carboxy group, R 4 is hydrogen, R 2 is hydrogen, R 3 is an aryloxy group, etc., and R 2 and R 3 are at any position of the quinolidinone ring. also located, and bonded to each other -CH 2 CH 2 CH 2 -, Etc.), a coughing / expectorant containing a quinolidinone compound or a salt thereof. |