2017
DOI: 10.1107/s2414314617008124
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Methyl (6R*,6aR*,12bR*)-2,4-dimethyl-6-(2-methylphenyl)-1,3-dioxo-2,3,4,6a,7,12b-hexahydro-1H,6H-chromeno[4′,3′:4,5]pyrano[2,3-d]pyrimidine-6a-carboxylate

Abstract: In the title compound, C 24 H 24 N 2 O 6 , the mean planes of the pyran rings (A and B) are inclined to one another by 69.2 (1) , while the aromatic ring (D) of the chromene ring system makes dihedral angles of 63.42 (11) and 66.81 (12) with the pyrimidine (C) and benzene (E) rings, respectively. Pyran ring A has an halfchair conformation, while pyran ring B has an envelope conformation, with the spiro C atom as the flap. In the crystal, molecules are linked by C-HÁ Á ÁO hydrogen bonds, forming a supramole… Show more

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