title: A new flavonoid glycoside from the root bark of Morus alba L.
abstract: A new guibourtinidol glycoside, (2R,3S)-guibourtinidol-3-O-α-d-apiofuranosyl-(1 → 6)-O-β-D-glucopyranoside (1), and three known compounds, quercetin 7-O-β-D-glucopyranoside (2), syringaresinol-4-O-β-D-glucopyranoside (3) and dehydrodiconiferyl alcohol 4,9'-di-O-β-D-glucopyranoside (4), were isolated from the root bark of Morus alba L. through repeated silica gel, octadecyl silica gel and Sephadex LH-20 column chromatography for the n-BuOH fraction. The chemical structure of the compounds was elucidated based on MS, infrared, 1D and 2D NMR spectroscopic data. Compounds 2-4 were also isolated for the first time from the root bark of M. alba L. in this study.
authors.affiliation: a Department of Oriental Medicinal Materials and Processing , Graduate School of Biotechnology, Institute of Life Sciences and Resources, Kyung Hee University , Yongin 446-701 , Republic of Korea.
authors.forename: Ji-Hae
authors.initials: JH
authors.lastname: Park
authors.forename: Ye-Jin
authors.initials: YJ
authors.lastname: Jung
authors.forename: Jae-Woo
authors.initials: JW
authors.lastname: Jung
authors.forename: Sabina
authors.initials: S
authors.lastname: Shrestha
authors.forename: Dong Wook
authors.initials: DW
authors.lastname: Lim
authors.forename: Daeseok
authors.initials: D
authors.lastname: Han
authors.forename: Nam-In
authors.initials: NI
authors.lastname: Baek
mesh_terms: D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D031625:Morus / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D056910:Republic of Korea
chemical_list: C000594459:(2R,3S)-guibourtinidol-3-O-alpha-D-apiofuranosyl-(1-6)-O-beta-D-glucopyranoside; D005419:Flavonoids; D006027:Glycosides
keywords: Morus alba L; flavonoid; guibourtinidol glycoside; lignan