abstract |
Process for the preparation of quinazolone derivatives of the formula **(Formula)** in which A means one of the groups -CH=CH- and -CH=N-; R1 signifies hydrogen, a lower alkoxy radical or -COOH; R2 means -COOH and, if R1 is -COOH, also a lower alkoxy radical, in the form of free compounds or as salts with acids or possibly with bases. |