A new compound, named heteraltaic acid was isolated from the flowers of Heteropappus altaicus (willd) Novopokr.. The compound was elucidated as (5R, 6S, 8aS) –5- [2-(3-furyl ) ethyl-5, 6, 8a-trimethyl-4a, 5, 6, 7, 8,...A new compound, named heteraltaic acid was isolated from the flowers of Heteropappus altaicus (willd) Novopokr.. The compound was elucidated as (5R, 6S, 8aS) –5- [2-(3-furyl ) ethyl-5, 6, 8a-trimethyl-4a, 5, 6, 7, 8, 8a -hexahydro-1-naphthalenecarboxylic acid] by the combination of 1D and 2D NMR techniques (HSQC, HMBC) and X-ray analysis.展开更多
A new dihydroflavone glycoside was isolated from the underground parts of Glycyrrhiza uralensis. Its structure was elucidated as 7-hydroxyl-4'-O-β-D-(6'-O-α-hydroxylpropionyl) glucopyranosyl dihydroflavone b...A new dihydroflavone glycoside was isolated from the underground parts of Glycyrrhiza uralensis. Its structure was elucidated as 7-hydroxyl-4'-O-β-D-(6'-O-α-hydroxylpropionyl) glucopyranosyl dihydroflavone by spectral methods.展开更多
From the ethanolic extract of the whole plant of Hemistepta lyrata Bunge., a new lignan, named hemislin B glucoside, has been isolated and identified as a-(trans-3-methoxy-4-O-b-D-glucopyranosylbenzylidene)-b-(3,4-dim...From the ethanolic extract of the whole plant of Hemistepta lyrata Bunge., a new lignan, named hemislin B glucoside, has been isolated and identified as a-(trans-3-methoxy-4-O-b-D-glucopyranosylbenzylidene)-b-(3,4-dimethoxybenzyl)-g-butyrolactone. Its structure has been established on the basis of UV, IR, FABMS, 1H-NMR, 13C-NMR, HMQC and HMBC spectral analysis.展开更多
文摘A new compound, named heteraltaic acid was isolated from the flowers of Heteropappus altaicus (willd) Novopokr.. The compound was elucidated as (5R, 6S, 8aS) –5- [2-(3-furyl ) ethyl-5, 6, 8a-trimethyl-4a, 5, 6, 7, 8, 8a -hexahydro-1-naphthalenecarboxylic acid] by the combination of 1D and 2D NMR techniques (HSQC, HMBC) and X-ray analysis.
文摘A new dihydroflavone glycoside was isolated from the underground parts of Glycyrrhiza uralensis. Its structure was elucidated as 7-hydroxyl-4'-O-β-D-(6'-O-α-hydroxylpropionyl) glucopyranosyl dihydroflavone by spectral methods.
文摘From the ethanolic extract of the whole plant of Hemistepta lyrata Bunge., a new lignan, named hemislin B glucoside, has been isolated and identified as a-(trans-3-methoxy-4-O-b-D-glucopyranosylbenzylidene)-b-(3,4-dimethoxybenzyl)-g-butyrolactone. Its structure has been established on the basis of UV, IR, FABMS, 1H-NMR, 13C-NMR, HMQC and HMBC spectral analysis.
