The Structures of Sinapic Acid Esters and Their Metabolism in Cotyledons of Raphanus sativus
2014
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.
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