Two new cardenolide glycosides, biondianosides A and B, were isolated from the roots of endemic plant of Biondia hemsleyana (Warb.) Tsiang. Their structures were elucidated as periplogenin-3-O--D-glucopyranosyl-(16)--...Two new cardenolide glycosides, biondianosides A and B, were isolated from the roots of endemic plant of Biondia hemsleyana (Warb.) Tsiang. Their structures were elucidated as periplogenin-3-O--D-glucopyranosyl-(16)--D-glucopyranosyl-(14)--D-cymaropyranoside (1) and 17釮-periplogenin-3-O--D-cymaropyranoside (2) by the spectroscopic and chemical methods.展开更多
From the stems ofMarsdenia tenacissima two new polyoxypregnanes were isolated, their structures were elucidated by 1D, 2D-NMR as 11α,12β-di-O-tigloyl-tenacigenin B （1） and tenacigenoside E （2）.
A new monoterpene glycoside, together with nine known ones, 3-O-methylpaeoniflorin, mudanpioside J, paeoniflorin, benzoylpaeoniflorin, oxypaeoniflorin, benzoyloxypaeoniflorin, oxybenzoylpaeoniflorin, albiflorin and la...A new monoterpene glycoside, together with nine known ones, 3-O-methylpaeoniflorin, mudanpioside J, paeoniflorin, benzoylpaeoniflorin, oxypaeoniflorin, benzoyloxypaeoniflorin, oxybenzoylpaeoniflorin, albiflorin and lactiflorin, was isolated from the roots of Paeonia lactiflora Pall.. The structure of the new compound was elucidated as galloylalbiflorin by the spectro- scopic evidence including ESI-MS, 1D- and 2D-NMR spectra.展开更多
Two new norditerpenoid alkaloids were isolated from the roots of Aconitum nagarum.Their structures were elucidated as 13-hydroxyfranchetine 1 and 10-dehydroxyflavaconitine 2,respectively, by 1D and 2D NMR experiments.
A novel ursane triterpene, named swinhoeic acid, was isolated from the roots of Rubus swinhoei. Its structure was elucidated as 18, 19-seco, 2 alpha, 3 beta -dihydroxy-19-oxo-urs-11, 13(18)-dien-28-oic acid by means o...A novel ursane triterpene, named swinhoeic acid, was isolated from the roots of Rubus swinhoei. Its structure was elucidated as 18, 19-seco, 2 alpha, 3 beta -dihydroxy-19-oxo-urs-11, 13(18)-dien-28-oic acid by means of MS, 1 DNMR and 2DNMR.展开更多
Two new xanthone glycosides, tetraswerosides A and B, were isolated from the whole plant of Swertia tertraptera. Their structures were determined as 3-O-beta -D-glucopyranosyl-1-hydroxy-4,7-dimethoxyxanthone and 3-O-[...Two new xanthone glycosides, tetraswerosides A and B, were isolated from the whole plant of Swertia tertraptera. Their structures were determined as 3-O-beta -D-glucopyranosyl-1-hydroxy-4,7-dimethoxyxanthone and 3-O-[beta -D-xylopyranosyl-(1-->6)-beta -D-glucopyranosyl]-1- hydroxy-4,7-dimethoxyxanthone by spectroscopic methods.展开更多
A new daphnane diterpene was isolated from the root barks of Daphne tangutica Maxim. Its structure was elucidated as 1, 2α-dihydro-20-palimoyldaphnctoxin by the spectroscopic evidence including 2D-NMR.
Two new steroidal saponins, diuranthosides D and E, were isolated from the whole plant of Diuranthera inarticulata Wang et K. Y. Lang. By means of spectral and chemical analysis, the structure of the new compounds wer...Two new steroidal saponins, diuranthosides D and E, were isolated from the whole plant of Diuranthera inarticulata Wang et K. Y. Lang. By means of spectral and chemical analysis, the structure of the new compounds were established as neotigogenin-3-O-(-D-glucopyranosyl (1?3)-(-D-xylopyranosyl-(1?3)-[(-D-glucopyranosyl(1?2)]-(-D-glucopyranosyl(1?4)-(-D-galactopyranoside (1) and neotigogenin-3-O-(-D-glucopyranosyl(1?3)-(-D-glucopyranosyl (1?3)-(-D-xylopyranosyl(1?3)-[(-D-glucopyranosyl(1?2)]-(-D-glucopyranosyl(1?4)-(-D-galactopyranoside (2) respectively.展开更多
A novel monoterpene glycoside, mileenside, was isolated from Swertia mileensis by repeated normal and reverse phase silica gel chromatography and its structure was elucidated mainly based on spectral evidence.
A new triterpenoid bisglycoside, named raddeanoside R19, was isolated from the roots of Anemone raddeana. Its structure was elucidated on the basis of ESI-MS, ^13C NMR, and chemical methods.
A new sesquiterpene lactone glucoside, notoserolide C (1), was isolated from the whole plant of Notoseris psilolepis Shih. By means of spectral analysis including MS, NMR (H-1 NMR, C-13 NMR, H-1-H-1 COSY, HMQC, HMBC) ...A new sesquiterpene lactone glucoside, notoserolide C (1), was isolated from the whole plant of Notoseris psilolepis Shih. By means of spectral analysis including MS, NMR (H-1 NMR, C-13 NMR, H-1-H-1 COSY, HMQC, HMBC) and X-ray diffraction, the structure of notoserolide C was established as cichorioside B angelate.展开更多
文摘Two new cardenolide glycosides, biondianosides A and B, were isolated from the roots of endemic plant of Biondia hemsleyana (Warb.) Tsiang. Their structures were elucidated as periplogenin-3-O--D-glucopyranosyl-(16)--D-glucopyranosyl-(14)--D-cymaropyranoside (1) and 17釮-periplogenin-3-O--D-cymaropyranoside (2) by the spectroscopic and chemical methods.
文摘From the stems ofMarsdenia tenacissima two new polyoxypregnanes were isolated, their structures were elucidated by 1D, 2D-NMR as 11α,12β-di-O-tigloyl-tenacigenin B （1） and tenacigenoside E （2）.
文摘A new monoterpene glycoside, together with nine known ones, 3-O-methylpaeoniflorin, mudanpioside J, paeoniflorin, benzoylpaeoniflorin, oxypaeoniflorin, benzoyloxypaeoniflorin, oxybenzoylpaeoniflorin, albiflorin and lactiflorin, was isolated from the roots of Paeonia lactiflora Pall.. The structure of the new compound was elucidated as galloylalbiflorin by the spectro- scopic evidence including ESI-MS, 1D- and 2D-NMR spectra.
文摘Two new norditerpenoid alkaloids were isolated from the roots of Aconitum nagarum.Their structures were elucidated as 13-hydroxyfranchetine 1 and 10-dehydroxyflavaconitine 2,respectively, by 1D and 2D NMR experiments.
基金the Sichuan Sci & Tech Foundation for Young Scientists.
文摘A novel ursane triterpene, named swinhoeic acid, was isolated from the roots of Rubus swinhoei. Its structure was elucidated as 18, 19-seco, 2 alpha, 3 beta -dihydroxy-19-oxo-urs-11, 13(18)-dien-28-oic acid by means of MS, 1 DNMR and 2DNMR.
基金This work was supported by the''Xi Bu Zhi Guang''Foundation of the Chinese Academy of Sciences.
文摘Two new xanthone glycosides, tetraswerosides A and B, were isolated from the whole plant of Swertia tertraptera. Their structures were determined as 3-O-beta -D-glucopyranosyl-1-hydroxy-4,7-dimethoxyxanthone and 3-O-[beta -D-xylopyranosyl-(1-->6)-beta -D-glucopyranosyl]-1- hydroxy-4,7-dimethoxyxanthone by spectroscopic methods.
文摘A new daphnane diterpene was isolated from the root barks of Daphne tangutica Maxim. Its structure was elucidated as 1, 2α-dihydro-20-palimoyldaphnctoxin by the spectroscopic evidence including 2D-NMR.
基金the Special Project of Biological Science and Technology of the Chinese Academy of Sciences (STZ-97-3-08).
文摘Two new steroidal saponins, diuranthosides D and E, were isolated from the whole plant of Diuranthera inarticulata Wang et K. Y. Lang. By means of spectral and chemical analysis, the structure of the new compounds were established as neotigogenin-3-O-(-D-glucopyranosyl (1?3)-(-D-xylopyranosyl-(1?3)-[(-D-glucopyranosyl(1?2)]-(-D-glucopyranosyl(1?4)-(-D-galactopyranoside (1) and neotigogenin-3-O-(-D-glucopyranosyl(1?3)-(-D-glucopyranosyl (1?3)-(-D-xylopyranosyl(1?3)-[(-D-glucopyranosyl(1?2)]-(-D-glucopyranosyl(1?4)-(-D-galactopyranoside (2) respectively.
文摘A novel monoterpene glycoside, mileenside, was isolated from Swertia mileensis by repeated normal and reverse phase silica gel chromatography and its structure was elucidated mainly based on spectral evidence.
文摘A new triterpenoid bisglycoside, named raddeanoside R19, was isolated from the roots of Anemone raddeana. Its structure was elucidated on the basis of ESI-MS, ^13C NMR, and chemical methods.
基金the Special Project of Biological Science and Technology of the Chinese Academy of Sciences (STZ-97-3-08).
文摘A new sesquiterpene lactone glucoside, notoserolide C (1), was isolated from the whole plant of Notoseris psilolepis Shih. By means of spectral analysis including MS, NMR (H-1 NMR, C-13 NMR, H-1-H-1 COSY, HMQC, HMBC) and X-ray diffraction, the structure of notoserolide C was established as cichorioside B angelate.
