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The title pyrimidine derivative, C 18 H 21 N 3 O 6 , was obtained by the reaction of methyl 2-[2-(benzyl­oxycarbon­yl)amino­propan-2-yl]-5-hy­droxy-6-oxo-1,6-dihydro­pyrimidine-4-carboxyl­ate with dimethyl sulfate in dimethyl sulfoxide. The mol­ecule has a V-shaped structure, the phenyl and the pyrimidine rings making a dihedral angle of 43.1 (1)°. The methyl group substituting the pyrimidine ring deviates slightly from the ring mean-plane [C—N—C—C torsion angle = 5.49 (15)°], and the methyl ester substituent has a conformation suitable for the formation of an intra­molecular O—H⋯O hydrogen bond with the hydroxyl functionality. In the crystal, molecules are linked into chains along the  b  axis by N—H⋯O hydrogen bonds.

Methyl 2-[2-(benzyloxycarbonylamino)propan-2-yl]-5-hydroxy-1-methyl-6-oxo-1,6-dihydropyrimidine-4-carboxylate