1-(5-Hydroxy-2,2,8,8-tetramethyl-2H,8H-pyrano[2,3-f]chromen-6-yl)-3-(4-methoxyphenyl)prop-2-en-1-one

1-(5-Hydroxy-2,2,8,8-tetramethyl-2H,8H-pyrano[2,3-f]chromen-6-yl)-3-(4-methoxyphenyl)prop-2-en-1-one

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In the biologically active iPhone 8/SE title compound, C26H26O5, the pyran ring of the chromene unit adopts a half-chair conformation.The C=C double bond of the propenone unit exhibits a trans conformation and the carbonyl group is syn conformation to the double bond.The dihedral angle between the benzene ring and the benzopyranone moiety GREEN TEA GUM is 31.

54 (4)°.The molecular structure is stabilized by an intramolecular C=O.H—O hydrogen bond.