A new anthraquinone, Glyceroyl-1,6,8-trihydroxy-3-methyl-9, 10-dioxo-2-anthracene carboxylate I, was isolated from Clinopodium polycephalum. The chemical structure was determined by spectroscopic methods.
Two new glycosides 1,5-dihydroxyxathanone-6-o-beta-D-glucoside and flavanonol-taxifolin-3, 7-o-alpha-L-dirhamnoside. were isolated from the aerial parts of Hypericum japonicum Thunb, ex Murray, The chemical structures...Two new glycosides 1,5-dihydroxyxathanone-6-o-beta-D-glucoside and flavanonol-taxifolin-3, 7-o-alpha-L-dirhamnoside. were isolated from the aerial parts of Hypericum japonicum Thunb, ex Murray, The chemical structures were determined by spectroscopic methods and chemical evidences展开更多
A now lignan, neoarctin A, has been isolated from the seeds of Arctium lappa L. and the structure elucidated on the basis of spectral analysis. In the previous paper([1]) we reported the isolation and identification o...A now lignan, neoarctin A, has been isolated from the seeds of Arctium lappa L. and the structure elucidated on the basis of spectral analysis. In the previous paper([1]) we reported the isolation and identification of chemical constituents from the roots of Arctium lappa collected from Akesu, the Xinjiang Autonomous Region. In the present paper,we report the structure elucidation of a new lignan from the roots of the same plant.展开更多
A new alpha-pyrone derivative, epimedokoreanone A was isolated from the aerial parts of Epimedium koreanum Nakai. Its structure was determined by spectroscopic methods (IR, MS, H-1 NMR, C-13 NMR, DEPT, H-1-C-13 COSY a...A new alpha-pyrone derivative, epimedokoreanone A was isolated from the aerial parts of Epimedium koreanum Nakai. Its structure was determined by spectroscopic methods (IR, MS, H-1 NMR, C-13 NMR, DEPT, H-1-C-13 COSY and H-1-C-13 long range COSY)展开更多
The structure of a new triterpenoid, named gonolactone A, isolated from the fruiting body of Ganoderma lucidum,was determined by spectroscopic methods. This compound was identified as 7 beta -hydroxy-3. 11,15-trioxo-l...The structure of a new triterpenoid, named gonolactone A, isolated from the fruiting body of Ganoderma lucidum,was determined by spectroscopic methods. This compound was identified as 7 beta -hydroxy-3. 11,15-trioxo-lanosta-8-en-24 --> 20 lactone.展开更多
From the aerial part of Hypericum japonicum Thunb. ex Murray, two new chromone glycosides, 5, 7-Dihydroxy-2-(1-methylpropyl) chromone-8-beta-D-glucoside and 5, 7-Dihydroxy-2-isopropylchromone-8-beta-D-glucoside, were ...From the aerial part of Hypericum japonicum Thunb. ex Murray, two new chromone glycosides, 5, 7-Dihydroxy-2-(1-methylpropyl) chromone-8-beta-D-glucoside and 5, 7-Dihydroxy-2-isopropylchromone-8-beta-D-glucoside, were isolated and their structures were determined on basis of spectroscopic evidences.展开更多
A new ellagic acid glycoside named ducheside A has been isolated from Duchesnea indica Focke, and its structure was elucidated as 3'-0-methyl-ellagic acid-4-0-beta-D-xylopyranoside on the basis of spectral analysi...A new ellagic acid glycoside named ducheside A has been isolated from Duchesnea indica Focke, and its structure was elucidated as 3'-0-methyl-ellagic acid-4-0-beta-D-xylopyranoside on the basis of spectral analysis and hydrolysis.展开更多
From the aerial part of Hypericum japonicum Thunb. ex Murray, two new pyrones, japonicumone-A and -B, were isolated and their structures were determined on basis of spectroscopic evidence.
A new lanostane-type triterpenoid, ganoderic acid DM was isolated from the cultured fruiting body of G. lucidum. The structure of ganoderic acid DM (1) was determined by spectral data. It was ldentifled as 3. 7-dioxo-...A new lanostane-type triterpenoid, ganoderic acid DM was isolated from the cultured fruiting body of G. lucidum. The structure of ganoderic acid DM (1) was determined by spectral data. It was ldentifled as 3. 7-dioxo-8, 24E-dien-lanosta-26-oic acid.展开更多
A new isoflavone designated as eurycarpin A(I) has been isolated from the root of Glycyrrhiza eurycarpa P. C. Li. Based on spectroscopic data, its structure was established as 7, 2',4'-trihydroxy-3'(3,3-di...A new isoflavone designated as eurycarpin A(I) has been isolated from the root of Glycyrrhiza eurycarpa P. C. Li. Based on spectroscopic data, its structure was established as 7, 2',4'-trihydroxy-3'(3,3-dimethylallyl) isoflavone.展开更多
文摘A new anthraquinone, Glyceroyl-1,6,8-trihydroxy-3-methyl-9, 10-dioxo-2-anthracene carboxylate I, was isolated from Clinopodium polycephalum. The chemical structure was determined by spectroscopic methods.
文摘Two new glycosides 1,5-dihydroxyxathanone-6-o-beta-D-glucoside and flavanonol-taxifolin-3, 7-o-alpha-L-dirhamnoside. were isolated from the aerial parts of Hypericum japonicum Thunb, ex Murray, The chemical structures were determined by spectroscopic methods and chemical evidences
文摘A now lignan, neoarctin A, has been isolated from the seeds of Arctium lappa L. and the structure elucidated on the basis of spectral analysis. In the previous paper([1]) we reported the isolation and identification of chemical constituents from the roots of Arctium lappa collected from Akesu, the Xinjiang Autonomous Region. In the present paper,we report the structure elucidation of a new lignan from the roots of the same plant.
文摘A new alpha-pyrone derivative, epimedokoreanone A was isolated from the aerial parts of Epimedium koreanum Nakai. Its structure was determined by spectroscopic methods (IR, MS, H-1 NMR, C-13 NMR, DEPT, H-1-C-13 COSY and H-1-C-13 long range COSY)
文摘The structure of a new triterpenoid, named gonolactone A, isolated from the fruiting body of Ganoderma lucidum,was determined by spectroscopic methods. This compound was identified as 7 beta -hydroxy-3. 11,15-trioxo-lanosta-8-en-24 --> 20 lactone.
文摘From the aerial part of Hypericum japonicum Thunb. ex Murray, two new chromone glycosides, 5, 7-Dihydroxy-2-(1-methylpropyl) chromone-8-beta-D-glucoside and 5, 7-Dihydroxy-2-isopropylchromone-8-beta-D-glucoside, were isolated and their structures were determined on basis of spectroscopic evidences.
文摘A new ellagic acid glycoside named ducheside A has been isolated from Duchesnea indica Focke, and its structure was elucidated as 3'-0-methyl-ellagic acid-4-0-beta-D-xylopyranoside on the basis of spectral analysis and hydrolysis.
文摘From the aerial part of Hypericum japonicum Thunb. ex Murray, two new pyrones, japonicumone-A and -B, were isolated and their structures were determined on basis of spectroscopic evidence.
文摘A new lanostane-type triterpenoid, ganoderic acid DM was isolated from the cultured fruiting body of G. lucidum. The structure of ganoderic acid DM (1) was determined by spectral data. It was ldentifled as 3. 7-dioxo-8, 24E-dien-lanosta-26-oic acid.
文摘A new isoflavone designated as eurycarpin A(I) has been isolated from the root of Glycyrrhiza eurycarpa P. C. Li. Based on spectroscopic data, its structure was established as 7, 2',4'-trihydroxy-3'(3,3-dimethylallyl) isoflavone.
