Acetic acid, 2-(4-formylphenoxy)- → Pyrimidin-2,4-dione, 6-amino-5-[(4-carboxymethoxy)benzimidoyl]-1,3-dipr

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[C:1]([CH2:4][O:5][C:6]1[CH:13]=[CH:12][C:9]([CH:10]=O)=[CH:8][CH:7]=1)([OH:3])=[O:2].[NH2:14][C:15]1[C:16](=[O:29])[N:17]([CH2:26][CH2:27][CH3:28])[C:18](=[O:25])[N:19]([CH2:22][CH2:23][CH3:24])[C:20]=1[NH2:21]>CO.C(O)(=O)C>[NH2:21][C:20]1[N:19]([CH2:22][CH2:23][CH3:24])[C:18](=[O:25])[N:17]([CH2:26][CH2:27][CH3:28])[C:16](=[O:29])[C:15]=1[N:14]=[CH:10][C:9]1[CH:12]=[CH:13][C:6]([O:5][CH2:4][C:1]([OH:3])=[O:2])=[CH:7][CH:8]=1

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실험 절차

A representative synthesis of benzylidene adduct is given. Compound A (1.51 g, 8.37 mmol) was dissolved in a mixture of methanol (35 ml) and acetic acid (5 ml) in a 50 ml boiling flask on a steam bath. To this was added a methanolic solution (60 ml) of freshly synthesized 5,6-diamino-1,3-dipropyluracil. After heating 15 minutes, the volume was reduced by evaporation until crystallization occurred. Ether (40 ml) was added and the nearly white solid was collected. Yield 2.80 g (86%), mp 179°-180° C. Analysis (C19H24N4O5): calc. 58.60% C, 6.21% H, 14.39% N; found 58.72% C, 6.16% H, 14.43% N.