Artikel i vetenskaplig tidskrift, 2002

The crystal structure of 2-(3,4-dimethoxyphenyl)-5,7-dimethoxy-3,8-dimethyl-4H-1-benzopyran-4-one (alternatively 3',4'-dimethoxyphenyl-5,7-dimethoxy-3,8-dimethylflavone),C21H22O6, known to be a potent and selective inhibitor of rat heart cytosolic cyclic nucleotide phosphodiesterases, has been determined. In the benzopyran ring system, the pyran ring is slightly puckered. The structure is stabilized by weak C-H...O hydrogen bonds and by π-π interactions between pyran rings.

crystal structure

X-ray diffraction



Rolf Stomberg

Vratislav Langer

Chalmers, Institutionen för oorganisk miljökemi

Marcelle Hauteville

Acta Crystallographica Section E: Structure Reports Online

1600-5368 (ISSN)

Vol. E58 o506-o508


Organisk kemi