6a,7-Dihydro-2,6-dimethyl-7-phenyl-6H-chromeno[4,3-d]-1,2,4-triazolo[1,5-a]pyrimidin-6a-ol

In the title compound, C₂₀H₁₈N₄O₂, the dihydropyrimidine and dihydropyran rings adopt a distorted sofa conformation. The phenyl substituent at C7 and the hydroxy group at C6a adopt axial positions, whereas the methyl group at C6 is equatorial.

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