| | 1 | Author
| L. Britsch, W. Heller, H. Grisebach | Requires cookie* | | | Title
| Conversion of Flavanone to Flavone, Dihydroflavonol and Flavonol with an Enzyme System from Cell Cultures of Parsley  | | | | Abstract
| Soluble enzyme preparations from irradiated cell suspension cultures of parsley (Petroselinum hortense Hoffm.) catalyse the conversion o f flavanone to flavone, dihydroflavonol and flavonol. These reactions require 2-oxoglutarate, Fe2+ and ascorbate as cofactors. In the presence o f these cofactors conversion of dihydroflavonol to flavonol was also observed. With this system in vitro biosynthesis of radioactive flavone, dihydroflavonol and flavonol from [2-14C]malonyl-CoA and 4-coumaroyl-CoA in good yield and with high specific activity is possible. We postulate that synthesis of flavone and flavonol from flavanone proceeds via 2-hydroxy-and 2,3-dihydroxyflavanone, respectively, with subsequent dehydration. The microsomal fraction of the parsley cells contains an NADPH-dependent flavanone 3'-hydroxylase. | | | |
Reference
| Z. Naturforsch. 36c, 742—750 (1981); received June 3 1981 | | | |
Published
| 1981 | | | |
Keywords
| Flavonoids, Biosynthesis, Dioxygenases, Petroselinum hortense, Cell Cultures | | | |
Similar Items
| Find | | | DEBUG INFO
| | | | | TEI-XML for
| default:Reihe_C/36/ZNC-1981-36c-0742.pdf | | | | Identifier
| ZNC-1981-36c-0742 | | | | Volume
| 36 | |
|
