| 摘要 |
Title compds. (I; R' and R2 = H, Cl, F C1-C5 alkyl, C1-C5 alkoxy, R1 and R2 formed -OCH2O- or -OCH2CH2O-, R3 - Cl, Br, C1-C5 alkoxy) and their salts, useful for treating allergic bronchoasthma, were prepd. by reacting 1-oxo-1H-6-(R3-substituted) pyrimido (1,2a) quinoline-2-carboxylic acid (II) with coupling agents as N,N'-carbonyldiimidazole, N,N'-carbonyl-di-s-triazine, etc. and then with 5-aminotetrazole.
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