Methyl 6-(4-chloro-phen-yl)-2,4-dimethyl-1,3-dioxo-1,2,3,4,6,6a,7,12b- octahydrochromeno[4′,3′:4,5]pyrano[2,3-d]pyrimidine-6a-carboxylate

Abstract

In the title compound, C 24H 21ClN 2O 6, the two fused six-membered pyran rings adopt half-chair conformations. The dihedral angle between the pyrimidine ring and the chloro-phenyl ring is 51.55 (3)°. In the crystal, molecules are linked by pairs of weak inter-molecular C - H⋯O hydrogen bonds, forming inversion dimers. A C - H⋯π inter-action is also observed.