The Structures of Sinapic Acid Esters and Their Metabolism in Cotyledons of Raphanus sativus

Open Access
Publisher Website
Google Scholar
Abstract
Five sinapic acid esters were isolated from cotyledons of Raphanus sativus and have been iden­tified with the aid of electron impact (El)-, field desorption (FD)-mass spectrometry and NMR spectroscopy: 6,3′-disinapoylsucrose, sinapoylcholine (sinapine), 6-sinapoylglucoraphenine, 1-si- napoylglucose, and sinapoylmalate. Three of these derivatives are metabolically related in the se­quence sinapoylcholine →1 -sinapoylglucose →sinapoylmalate.