| abstract |
Compounds of the formula ##SPC1## n Wherein the n R 1 ' s are hydrogen, alkyl of 1 to 3 carbon atoms or together a double-bonded oxygen, n R 2 is hydrogen, fluorine, chlorine, methyl, hydroxyl, methoxy, hydroxy-ethoxy, nitro or --SO 3 H, n R 3 is hydrogen, fluorine, chlorine or methoxy, n R 4 is hydrogen, methyl or methoxy, n R 5 is hydrogen, fluorine, chlorine or methyl, and n R 6 is hydrogen or alkyl of 1 to 8 carbon atoms, and, when R 6 is hydrogen, salts thereof formed with an inorganic or organic base; the compounds as well as the salts are useful as antiallergics. |