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ligularia narynensis/leucemia
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Intermedeol isolated from the leaves of Ligularia fischeri var. spiciformis induces the differentiation of human acute promyeocytic leukemia HL-60 Cells.
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The present work was performed to investigate the effects of intermedeol on proliferation and differentiation of human leukemia-derived HL-60 cells as well as the underlying mechanisms for these effects. Intermedeol exhibited a potent antiproliferative activity against HL-60 cells. In addition, this
Four new terpenoids from the roots of Ligularia narynensis.
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Four new oplopane and guaiane type sesquiterpenoids (1-3), and a monoterpenoid (4) together with three known monoterpenoids (5-7), have been isolated from the roots of Ligularia narynensis. The structures of 1-4 were elucidated as
Absolute structures of monoterpenoids with a δ-lactone-containing skeleton from Ligularia hodgsonii.
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Bioactivity-directed fractionation of a methanol extract of Ligularia hodgsonii afforded two new monoterpenoids, liguhodgcins A (1) and B (2), with an unusual δ-lactone-containing skeleton. Moreover, liguhodgcin A (1) contained a chlorine atom. The structures and absolute configurations of the two
Sesquiterpenes with various carbon skeletons from Ligularia virgaurea spp. oligocephala.
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Two new 8,9-seco-cacalol-type sesquiterpene lactones, ligulolide C (1 and 2) and six known sesquiterpenes, adenostylide (3 and 4), cacalol (5), 1 -hydroxy-2-(3'-pentenyl)-3,7-dimethylbenzofuran (6), 1beta, 6alpha-dihydroxy-4(14)-eudesmene (7) and (+)-oplopanone (8), have been isolated from an
New weakly cytotoxic eremophilane sesquiterpenes from the roots of Ligularia virgaurea.
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Six new eremophilane sesquiterpenes, including a novel nortrieremophilane carbon skeleton, were isolated from the roots of Ligularia virgaurea. Their structures were elucidated as 3 alpha,4 alpha-epoxy-6 alpha-(2'-methylacryloyl)oxy-8 alpha-methoxyeremophil-7(11)-en-8 beta,12-olide (1), 3 alpha,4
Two new compounds from Ligularia dolichobotrys.
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Two new compounds, a stigmasterol (1) and an eremophilenolide (2), were isolated from Ligularia dolichobotrys (Diels) together with ten known sesquiterpenoids, two known triterpenes and five known sterols. Their structures were elucidated by spectroscopic methods (IR, MS, 1H, 13C and 2D NMR). In
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