title: Seven new aminoacyl sugars in Ipomoea batatas.
abstract: An analysis of the polar extracts from sweet potato Ipomoea batatas (Convolvulaceae) led to the isolation of seven unknown aminoacyl sugars. On the basis of 1D, 2D NMR, and mass spectrometry data, the structures of the compounds were elucidated as: beta-D-fructofuranosyl-(2 --> 1)-alpha-D-[2-O-valyl]-glucopyranoside (1), beta-D-fructofuranosyl-(2 --> 1)-alpha-D-[2-O-tyrosyl]-glucopyranoside (2), beta-D-fructofuranosyl-(2 --> 1)-alpha-D-[2-O-threonyl]-glucopyranoside (3), beta-D-fructofuranosyl-(2 --> 1)-alpha-D-[2-O-hystidyl]-glucopyranoside (4), 2-beta-D-fructofuranosyl-(2 --> 1)-alpha-D-[2-O-alanyl]-glucopyranoside (5), beta-D-fructofuranosyl-(2 --> 1)-alpha-D-[2-O-tryptophanyl]-glucopyranoside (6), and beta-D-fructofuranosyl-(2 --> 1)-alpha-D-[2-O-glycyl]-glucopyranoside (7).
authors.affiliation: Dipartimento di Chimica delle Sostanze Naturali, Università di Napoli Federico II, Naples, Italy.
authors.forename: Irene
authors.initials: I
authors.lastname: Dini
authors.forename: Gian Carlo
authors.initials: GC
authors.lastname: Tenore
authors.forename: Elena
authors.initials: E
authors.lastname: Trimarco
authors.forename: Antonio
authors.initials: A
authors.lastname: Dini
mesh_terms: D049148:Aminoacylation; D002236:Carbohydrate Conformation; D002241:Carbohydrates / Q000032:analysis* / Q000737:chemistry; D027723:Ipomoea batatas / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D000432:Methanol; D010936:Plant Extracts / Q000737:chemistry; D035281:Plant Tubers / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013395:Sucrose / Q000032:analysis / Q000737:chemistry
chemical_list: D002241:Carbohydrates; D010936:Plant Extracts; D013395:Sucrose; D000432:Methanol