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

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.