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The structures of morusin, 2-(2,4-dihydroxyphenyl)-5-hydroxy-8,8-dimethyl-3-(3-methyl-2-butenyl)- 4H,8H-benzo[1,2-b;3,4-b']dipyran-4-one (C25H24O6) (I) and morusin dimethyl ether, 2-(2,4-dimethoxyphenyl)-5-hydroxy-8,8-dimethyl-3-(3-methyl- 2-butenyl)-4H,8H-benzo[1,2-b;3,4-b']dipyran-4-one (C27H28O6) (II) are reported. In molecules (I) and (II), the benzopyranone moiety is planar. The dihedral angles between benzopyranone moiety and phenyl ring are 66.25 (10) and 85.32 (5)°, respectively. When the dihydroxyphenyl [dimethoxyphenyl for (II)] and 3-methyl-2-butenyl groups are fixed in the same positions to the benzopyranone plane, the pyrano rings of (I) and (II) are enantiomeric.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks I, II, global

CCDC references: 126953; 126954

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