title: Microbiological transformation of chromone, chromanone, and ring A hydroxyflavones.
abstract: Microbial transformation of chromone, chromanone, and 3 ring A hydroxyflavones (5-hydroxy-, 6-hydroxy-, and 7-hydroxyflavones) was attempted using thirty-two microorganisms. While chromone was not biotransformed, chromanone was transformed to chromone and chromanol by Aspergillus niger in 2% yield. Ring A hydroxylated flavones were transformed to the corresponding C-4' hydroxylated metabolites, and the yields and rate of product formation were found to correlate with the distance between the C-4 carbonyl group and the hydroxyl group in ring A.
authors.affiliation: Department of Medicinal Chemistry, College of Pharmacy, University of Minnesota, Minneapolis 55455.
authors.forename: A R
authors.initials: AR
authors.lastname: Ibrahim
authors.forename: Y J
authors.initials: YJ
authors.lastname: Abul-Hajj
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D001711:Biotransformation; D002867:Chromones / Q000737:chemistry / Q000378:metabolism*; D005419:Flavonoids / Q000737:chemistry / Q000378:metabolism*; D005658:Fungi / Q000378:metabolism*; D006900:Hydroxylation; D009682:Magnetic Resonance Spectroscopy
chemical_list: D002867:Chromones; D005419:Flavonoids; C068514:4-chromanone; C068515:4-chromone