FREE AND BOUND 6,9-DIHYDROXYMEGASTIGM-7-EN-3-ONE IN VITIS VINIFERA GRAPES AND WINE

Article abstract of DOI:10.1016/0031-9422(92)83154-Q

4-Hydroxy-4-(3-hydroxy-1-butenyl)-3,3,5-trimethylcyclohexanone (6,9-dihydromegastigm-7-en-3-one) was synthesized from vomifoliol and was identified for the first time as a common constituent of Vitis vinifera grapes in both free and conjugated forms, as well as a minor constituent of French and American oakwood extracts.The corresponding β-D-glucopyranoside was isolated from a Riesling wine. Key words: Vitis vinifera; grape; wine; oakwood; glucoside; norisoprenoid.