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Glycosides from the bark of Machilus robusta.
|Title||Glycosides from the bark of Machilus robusta.|
|Publication Type||Journal Article|
|Year of Publication||2013|
|Authors||Bu P-B, Li Y-R, Jiang M, Wang F, Wang X-L, Lin S, Zhu C-G, Shi J-G|
|Journal||Journal of Asian natural products research|
Six new glycosidic constituents (1-6), together with 10 known analogs, have been isolated from the bark of Machilus robusta. Structures of the new compounds, including the absolute configurations, were determined by spectroscopic and chemical methods as ( - )-nectandrin B-β-d-glucopyranoside (1), ( - )-(7R,7'R,8S,8'R)-4,4'-dihydroxy-3,3'-dimethoxy-7,7'-epoxylignan-4-O-β-d-glucopyranoside (2), ( - )-(7R,7'R,8S,8'R)-4,4'-dihydroxy-3,3'-dimethoxy-7,7'-epoxylignan-4'-O-β-d-glucopyranoside (3), ( - )-(8S,8'R)-4,4'-dihydroxy-3,3',5'-trimethoxylignan-4'-O-β-d-glucopyranoside (4), ( - )-(7R,8R)-syringylglycerol-8-O-β-d-glucopyranoside (5), and ( - )-3-hydroxy-2-methyl-4-pyrone-3-O-β-d-xylopyranosyl-(1 → 6)-O-β-d-glucopyranoside (6), respectively.
|Alternate Journal||J Asian Nat Prod Res|