20（R）-ginsenoside-Rh2,ginsenoside-Rg3 and 20（S）-ginsenoside Rg3 were prepared by the hydrolysis of leaf saponins of Panax notoginseng（Burk.）F.H.Chen with solution of 50% acetic acid and then column chromatograph...20（R）-ginsenoside-Rh2,ginsenoside-Rg3 and 20（S）-ginsenoside Rg3 were prepared by the hydrolysis of leaf saponins of Panax notoginseng（Burk.）F.H.Chen with solution of 50% acetic acid and then column chromatography on silica gel.Their structures were characterized by spectroscopic analysis,chemical degradation and comparison with authentic samples.展开更多
Plants of Schisandraceae formily are rich sources of lignans,which have been found to possess some beneficial pharmacological effects including antihepatitis,antitumor and anti HIV activities.In order to search for mo...Plants of Schisandraceae formily are rich sources of lignans,which have been found to possess some beneficial pharmacological effects including antihepatitis,antitumor and anti HIV activities.In order to search for more bioactive natural products and avoid confusion arisen from the same structures under different names by authors in the literature,the paper has reviewed 150 new lignans from plants of Schisandraceae in the literature published mainly after 1990, including dibenzocyclooctadiene,spirobenzofuranoid dibenzocyclooctadiene,4 aryltetralin,2,3 dimetheyl 1,4 diarylbutane and 2,5 diaryl tetrahydrofuran lignans.展开更多
Eight dibenzocyclooctadiene lignans were isolated from the stems of Schisandra propinqua(Wall.)Hook. f. et Thoms. Their structures were elucidated as acetylgomisin R(1), angeloylgomisin R(2), gomisins A(3), B(4), N(5)...Eight dibenzocyclooctadiene lignans were isolated from the stems of Schisandra propinqua(Wall.)Hook. f. et Thoms. Their structures were elucidated as acetylgomisin R(1), angeloylgomisin R(2), gomisins A(3), B(4), N(5) and O(6), 6 O benzoylgomosin O(7) and schisantherin A(8) by spectral studies. Among them, compound 1 was a new one, compound 2 was discovered in the genus Schisandra for the first time and the others were originally isolated from Schisandra propinqua .展开更多
文摘20（R）-ginsenoside-Rh2,ginsenoside-Rg3 and 20（S）-ginsenoside Rg3 were prepared by the hydrolysis of leaf saponins of Panax notoginseng（Burk.）F.H.Chen with solution of 50% acetic acid and then column chromatography on silica gel.Their structures were characterized by spectroscopic analysis,chemical degradation and comparison with authentic samples.
文摘Plants of Schisandraceae formily are rich sources of lignans,which have been found to possess some beneficial pharmacological effects including antihepatitis,antitumor and anti HIV activities.In order to search for more bioactive natural products and avoid confusion arisen from the same structures under different names by authors in the literature,the paper has reviewed 150 new lignans from plants of Schisandraceae in the literature published mainly after 1990, including dibenzocyclooctadiene,spirobenzofuranoid dibenzocyclooctadiene,4 aryltetralin,2,3 dimetheyl 1,4 diarylbutane and 2,5 diaryl tetrahydrofuran lignans.
文摘Eight dibenzocyclooctadiene lignans were isolated from the stems of Schisandra propinqua(Wall.)Hook. f. et Thoms. Their structures were elucidated as acetylgomisin R(1), angeloylgomisin R(2), gomisins A(3), B(4), N(5) and O(6), 6 O benzoylgomosin O(7) and schisantherin A(8) by spectral studies. Among them, compound 1 was a new one, compound 2 was discovered in the genus Schisandra for the first time and the others were originally isolated from Schisandra propinqua .
