TY - JOUR
T1 - Stereochemical assignment of five new lignan glycosides from Viscum album by NMR study combined with CD spectroscopy
AU - Nhiem, Nguyen Xuan
AU - Lee, Hwa Young
AU - Kim, Nan Young
AU - Park, Seon Ju
AU - Kim, Eun Sil
AU - Han, Jeong Eun
AU - Yang, Heejung
AU - Kim, Seung Hyun
PY - 2012/11
Y1 - 2012/11
N2 - The chemical study of the leaves and twigs of Viscum album led to the isolation of five new lignan glycosides, namely, ligalbumosides A-E (2-6) and one known lignan glycoside, alangilignoside C (1). The structures of five new lignan glycosides were determined to be (7R,8S,8'S)-4,9,4'-trihydroxy-3,5,3',5'- tetramethoxy-7,9'-epoxylignan 9-O-β-D-glucopyranoside (2), (7S,8S,7'S,8'R)-4,9,4'-trihydroxy-3,5,3',5',7'-pentamethoxy-7,9'-epoxylignan 9-O-β-D-glucopyranoside (3), (7R,8R,7'S,8'S)-4,9,4'-trihydroxy-3,5,3',5', 7'-pentamethoxy-7,9'-epoxylignan 9-O-β-D-glucopyranoside (4), (7S,8R,7'S,8'R)-4,9,4'-trihydroxy-3,5,3',5',7'-pentamethoxy-7,9'-epoxylignan 9-O-β-D-glucopyranoside (5), and (7R,8S,7'R,8'S)-4,9,4',7'-tetrahydroxy-3, 5,3',5'-tetramethoxy-7,9'-epoxylignan 9-O-β-D-glucopyranoside (6) using 1D-, 2D-NMR, and CD spectra, chemical methods, as well as comparing the results with those reported in the literature.
AB - The chemical study of the leaves and twigs of Viscum album led to the isolation of five new lignan glycosides, namely, ligalbumosides A-E (2-6) and one known lignan glycoside, alangilignoside C (1). The structures of five new lignan glycosides were determined to be (7R,8S,8'S)-4,9,4'-trihydroxy-3,5,3',5'- tetramethoxy-7,9'-epoxylignan 9-O-β-D-glucopyranoside (2), (7S,8S,7'S,8'R)-4,9,4'-trihydroxy-3,5,3',5',7'-pentamethoxy-7,9'-epoxylignan 9-O-β-D-glucopyranoside (3), (7R,8R,7'S,8'S)-4,9,4'-trihydroxy-3,5,3',5', 7'-pentamethoxy-7,9'-epoxylignan 9-O-β-D-glucopyranoside (4), (7S,8R,7'S,8'R)-4,9,4'-trihydroxy-3,5,3',5',7'-pentamethoxy-7,9'-epoxylignan 9-O-β-D-glucopyranoside (5), and (7R,8S,7'R,8'S)-4,9,4',7'-tetrahydroxy-3, 5,3',5'-tetramethoxy-7,9'-epoxylignan 9-O-β-D-glucopyranoside (6) using 1D-, 2D-NMR, and CD spectra, chemical methods, as well as comparing the results with those reported in the literature.
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U2 - 10.1002/mrc.3875
DO - 10.1002/mrc.3875
M3 - Article
C2 - 22996565
AN - SCOPUS:84867493908
SN - 0749-1581
VL - 50
SP - 772
EP - 777
JO - Magnetic Resonance in Chemistry
JF - Magnetic Resonance in Chemistry
IS - 11
ER -