[NH3:1].C([O:4][C:5]([CH:7]([NH:17][C:18]1[C:27]2[C:22](=[CH:23][CH:24]=[C:25]([Cl:28])[CH:26]=2)[N:21]=[CH:20][N:19]=1)[C:8]1[CH:13]=[CH:12][C:11]2[O:14][CH2:15][O:16][C:10]=2[CH:9]=1)=O)C>C(O)C>[C:5]([CH:7]([NH:17][C:18]1[C:27]2[C:22](=[CH:23][CH:24]=[C:25]([Cl:28])[CH:26]=2)[N:21]=[CH:20][N:19]=1)[C:8]1[CH:13]=[CH:12][C:11]2[O:14][CH2:15][O:16][C:10]=2[CH:9]=1)(=[O:4])[NH2:1]20 ml of a 10% solution of ammonia in ethanol was added to 200 mg of 4-(α-ethoxycarbonyl-3,4-methylenedioxybenzyl)amino-6-chloroquinazoline. The obtained mixture was stirred at room temperature for 3 days. The crystal thus precipitated was recovered by filtration. Thus, 60 mg of the title compounds was obtained.
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