Acta Cryst. (2005). E61, o596-o598  [ doi:10.1107/S1600536805003594 ]

Scandenin

K. Ravikumar, B. Sridhar, A. Sridhar Rao and J. Madhusudana Rao

Abstract: The crystal structure of scandenin [systematic name: 4-hydroxy-3-(4-hydroxyphenyl)-5-methoxy-8,8-dimethyl-6-(3-methyl-2-butenyl)-2H,8H-pyrano[2,3f]chromen-2-one], C₂₆H₂₆O₆, has been determined. The compound crystallizes in the monoclinic space group P2₁/c with two independent but chemically identical molecules in the asymmetric unit. In both molecules, the coumarin moiety is planar and the angularly fused pyran ring is in a sofa conformation. The crystal structure is stabilized by intra- and intermolecular O-HO hydrogen bonds, with OO distances in the range 2.601  (1)-2.699  (2)  Å.

Online 12 February 2005

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