The genus Lilium comprises 119 taxa,primarily native to temperate and alpine regions of the Northern Hemisphere,extending to the northern Philippines.In this study,we report the first occurrence of Lilium candidum L.i...The genus Lilium comprises 119 taxa,primarily native to temperate and alpine regions of the Northern Hemisphere,extending to the northern Philippines.In this study,we report the first occurrence of Lilium candidum L.in Morocco,specifically in the jbel Sidi Ali El Jawzi area,within the territorial commune of Asjen,Ouezzane Province(Pre-Rif region).During a botanical survey conducted in May 2022,a population of L.candidum was identified,marking its first recorded presence in the country.Morphological characteristics were analyzed and compared with existing descriptions in the literature to confirm species identification.The species was found in a humid microclimate with calcareous soils,suggesting specific ecological requirements that facilitated its establishment.This unexpected discovery raises several questions regarding its biogeographical history,potential introduction pathways,and adaptation mechanisms in the Moroccan environment.Given its limited distribution and ecological specificity,its conservation status should be carefully evaluated,as human activities,habitat disturbance,and climate change may pose significant threats.Further studies,including genetic analyses and ecological monitoring,are needed to determine its origin,assess population stability,and establish conservation strategies.The presence of L.candidum in the Pre-Rif region expands the known distribution of the species and highlights the importance of continuous botanical exploration in North Africa,particularly in understudied mountainous ecosystems.展开更多
Two new C 27 steroidal glycosides, named ophiopojaponin A (1) and B (2), together with two known ones, were isolated from the tubers of the famous traditional Chinese herb Ophiopogon japonicus Ker_Gawl. The spect...Two new C 27 steroidal glycosides, named ophiopojaponin A (1) and B (2), together with two known ones, were isolated from the tubers of the famous traditional Chinese herb Ophiopogon japonicus Ker_Gawl. The spectroscopic and chemical evidence revealed their structures to be pennogenin 3_O_[2′_O_acetyl_α_L_rhamnopyranosyl (1→2)]_β_D_xylopyranosyl (1→3)_β_D_glucopyranoside (1), 26_O_β_D_glucopyranosyl_(22ξ, 25R)_3β, 14α, 22ξ, 26_tetrahydroxyfurost_5_ene 3_O_α_L_rhamnopyranosyl (1→2)_β_D_glucopyranoside (2), diosgenin 3_O_[α_L_rhamnopyranosyl (1→2)]_β_D_xylopyrano_syl (1→3)_β_D_glucopyranoside (3) and ruscogenin 1_O_[α_L_rhamnopyranosyl (1→2)]_β_D_xylopyranosyl (1→3)_β_D_fucopyranoside (4).展开更多
We investigated the chemical constituents of the fibrous root of Ophiopogon japonicus and their cytotoxicities against Hela and Hep2 cells.Ten compounds were purified by various chromatographic techniques.Their struct...We investigated the chemical constituents of the fibrous root of Ophiopogon japonicus and their cytotoxicities against Hela and Hep2 cells.Ten compounds were purified by various chromatographic techniques.Their structures were identified as 2 - hydroxylophiopogonone A（1）,5,8-dimethoxy-6-methyl-7-hydroxy-3-（2 -hydroxy-4 -methoxybenzyl） chroman-4-one（2）,5,7- dihydroxy-6,8-dimethyl-3-（4 -hydroxybenzyl） chroman-4-one（3）,7,4 -dihydroxy-5-methoxyflavanone（4）,N-trans-coumaroyltyramine （5）,N-trans-coumaroyloctopamine（6）, N-trans-feruloyltyramine （7）, 4-hydroxycinnamic acid （8）, caffeic acid （9）, and ferulic acid （10） on the basis of spectroscopic analyses. Compounds 4, 6, 7, 9, 10 were obtained from this genus for the first time. The cytotoxic activities of 1, 2, 4, 5, 6, 7, 9 and 10 against Hela and Hep2 cells are described.展开更多
Two new homoisoflavanones were isolated from the rhizomes of Polygonatum odoratum(Mill.) Druce and their structures were elucidated as(3R)-5,7-dihydroxy-8-methoxy-3-(4-methoxybenzyl)-6-methylchrom-an-4-one(1) and(3R)-...Two new homoisoflavanones were isolated from the rhizomes of Polygonatum odoratum(Mill.) Druce and their structures were elucidated as(3R)-5,7-dihydroxy-8-methoxy-3-(4-methoxybenzyl)-6-methylchrom-an-4-one(1) and(3R)-5,7,8-trihydroxy-3-(4- hydroxybenzyl)-6-methylchroman-4-one(2),on the basis of spectral analysis.展开更多
A new enolate derivative of furostanol glycoside, named asparagusin A, was isolated from the roots of Asparagus filicinus and established as 3-O-beta-D-xylopyranosyl(1-->4)-beta-D-glucopyranosyl (25S)-furost-20(22)...A new enolate derivative of furostanol glycoside, named asparagusin A, was isolated from the roots of Asparagus filicinus and established as 3-O-beta-D-xylopyranosyl(1-->4)-beta-D-glucopyranosyl (25S)-furost-20(22)-ene-3 beta, 26-diol 26-O-beta-D-glucopyranoside (1) by spectroscopic and chemical methods. Asparagusin A (1) exhibited a cytotoxic activity effect on PC12 cells.展开更多
Phytochemicalinvestigation onthe whole plants of Ypsilandra yunnanensiswas carried out forthe firsttime andledtothe isolation of five new cholestanol glycosides,ypsiyunnosides A–E(1–5),and one known analogue.Their s...Phytochemicalinvestigation onthe whole plants of Ypsilandra yunnanensiswas carried out forthe firsttime andledtothe isolation of five new cholestanol glycosides,ypsiyunnosides A–E(1–5),and one known analogue.Their structures were determined mainly by detailed spectroscopic analysis,including extensive 1D and 2D NMR,MS and UV,as well as chemical methods.Among them,compound 1 possessed a rare 6/6/6/5/5 fused-rings cholestanol sketelon,which was identified as(23R,25R)-3β,16α,26-triol-16,23-cyclocholest-5,17(20)-dien-22-one.Their induced platelet aggregation activities and cytotoxicities were evaluated.Graphical Abstract Five new cholestanol glycosides,ypsiyunnosides A–E(1–5),were isolated from the whole plants of Ypsilandra yunnanensis.Compound 1 possessed a rare 6/6/6/5/5 fused-rings cholestanol sketelon.Their structures were elucidated by a combination of 1D and 2D NMR,MS and chemical analysis.展开更多
Two new furostanol oligoglycosides named as aspacochioside A (1) and B (2) were isolated from the roots of Asparagus cochinchinensis (Lour.) Merr.. Their structures were elucidated to be 3-O-[{a-L-rhamnopyranosyl-(14)...Two new furostanol oligoglycosides named as aspacochioside A (1) and B (2) were isolated from the roots of Asparagus cochinchinensis (Lour.) Merr.. Their structures were elucidated to be 3-O-[{a-L-rhamnopyranosyl-(14)}{b-D-glucopyranosyl}]-26-O-[b-D-glucopy- ranosyl]-(25S)-5b-furostane-3b,22a,26-triol 1 and 3-O-[{a-L-rhamnopyranosyl-(14)}{b-D-glu- copyranosyl}]-26-O-[b-D-glucopyranosyl]-22a-methoxy-(25S)-5b-furostane-3b,26-diol 2 on the basis of spectroscopic techniques and chemical methods.展开更多
Two new C-27 steroidal: glycosides, named ophiopojaponin A(1)and B(2), were isolated from the tubers of famous traditional Chinese herb-Ophiopogon japonicus. The spectroscopic and chemical evidences revealed their str...Two new C-27 steroidal: glycosides, named ophiopojaponin A(1)and B(2), were isolated from the tubers of famous traditional Chinese herb-Ophiopogon japonicus. The spectroscopic and chemical evidences revealed their structures to be Pennogenin 3-O-[2'-O-acetyl-alpha-L-rhamnopyranosyl (1-->2)]-beta-D-xylopyranosyl (1-->3)-beta-D-glucopyranoside (1) and 26-O-beta-D-glucopyranosyl-(22 xi, 25R)-3 beta, 14 alpha, 22 xi, 26-tetrahydroxyfurost-5-ene 3-O-alpha-L-rhamnopyranosyl (1-->2)-beta-D-glucopyranoside (2), respectively.展开更多
The whole plants of Ypsilandra thibetica have been analyzed as part of a systematic study on saponin constituents of medicinal plants.This has resulted in the isolation of two new bisdesmosidic furostanol saponins,nam...The whole plants of Ypsilandra thibetica have been analyzed as part of a systematic study on saponin constituents of medicinal plants.This has resulted in the isolation of two new bisdesmosidic furostanol saponins,named ypsilandroside P(1)and ypsilandroside Q(2),and one new pregnane glycoside,named ypsilandroside R(3),together with nine known steroidal glycosides.Their structures were elucidated on the basis of extensive spectroscopic analysis,including that of 2D NMR data,and the results of acidic hydrolysis.Ypsilandroside P(1)was cytotoxicity against two human tumor cell lines.展开更多
Two new spirostanol saponins, (25S)-spirostane-1β,3β,5β-triol 3-O-β-D-glucopyrano- side 1 and rhodeasapogenin 3-O-β-D-glucopyranosyl-(1 → 4)-β-D-glucopyranoside 2, together with a known saponin, rhodeasapogenin...Two new spirostanol saponins, (25S)-spirostane-1β,3β,5β-triol 3-O-β-D-glucopyrano- side 1 and rhodeasapogenin 3-O-β-D-glucopyranosyl-(1 → 4)-β-D-glucopyranoside 2, together with a known saponin, rhodeasapogenin 3-O-β-D-glucopyranoside 3, were isolated from the underground parts of Tupistra chinensis Bak.. Their structures were determined by spectroscopic analysis.展开更多
The current state of coenotic populations of rare and endangered species of Uzbekistan-Tulipa lehmanniana Merckl. is given. Within the western part of the area (Kyzylkum desert) in different ecological and phytocenoti...The current state of coenotic populations of rare and endangered species of Uzbekistan-Tulipa lehmanniana Merckl. is given. Within the western part of the area (Kyzylkum desert) in different ecological and phytocenotic conditions, 8 coenotic populations of the species were identified. Based on the number of organism and population traits, the current state of coenotic populations of the species was evaluated. It was revealed that the vast majority of coenopopulations are in pessimal state. Coenopopulation only growing on the eastern part of the mountain Kuljuktau was assessed as optimal.展开更多
Steroidal alkaloids possess the basic steroidal skeleton with a nitrogen atom in rings or side chains incorporated as an integral part of the molecule.They have demonstrated a wide range of biological activities,and s...Steroidal alkaloids possess the basic steroidal skeleton with a nitrogen atom in rings or side chains incorporated as an integral part of the molecule.They have demonstrated a wide range of biological activities,and some of them have even been developed as therapeutic drugs,such as abiraterone acetate(Zytiga®),a blockbuster drug,which has been used for the treatment of prostate cancer.Structurally diverse natural steroidal alkaloids present a wide spectrum of biological activities,which are attractive for natural product chemistry and medicinal chemistry communities.This review comprehensively covers the structural classification,isolation and various biological activities of 697 natural steroidal alkaloids discovered from 1926 to October 2021,with 363 references being cited.展开更多
Phytochemical investigation of the rhizomes of Paris polyphylla var.stenophylla led to the isolation of two new highly oxygenated spirostanol saponins,named paristenosides A(1)and B(2),together with seven known compou...Phytochemical investigation of the rhizomes of Paris polyphylla var.stenophylla led to the isolation of two new highly oxygenated spirostanol saponins,named paristenosides A(1)and B(2),together with seven known compounds.Their structures were established mainly on the base of NMR spectroscopic techniques and mass spectrometry,as well as chemical methods.In addition,the cytotoxicity of the two new saponins was tested.Graphical Abstract Two new highly oxygenated spirostanol saponins,paristenosides A(1)and B(2),were isolated from the rhizomes of Paris polyphylla var.stenophylla.Their structures were established mainly based on NMR spectroscopic techniques and mass spectrometry,as well as chemical methods.展开更多
A new furostanoside, aspafilioside D (1) has been isolated from the root of Asparagus filicinus. Its structure was determined by spectral and chemical methods.
Two new monosaccharide steroidal saponins,named ypsilandroside S(1)and ypsilandroside T(2),have been isolated from the whole plants of Ypsilandra thibetica.Their structures were elucidated as heloniogenin 3-O-b-D-apio...Two new monosaccharide steroidal saponins,named ypsilandroside S(1)and ypsilandroside T(2),have been isolated from the whole plants of Ypsilandra thibetica.Their structures were elucidated as heloniogenin 3-O-b-D-apiofuranoside(1)and pregna 5,16-dien-3b,12a-diol-20-one-3-O-b-D-apiofuranoside(2)by spectroscopic techniques(1D and 2D NMR,MS).Compounds 1 and 2 were tested for their inhibitory effects on lipopolysaccharide-induced nitric oxide production in RAW 264.7 cells.展开更多
Two new steroidal glucosides, 26-O-β-D-glucopyranosyl （25S）-furost-5-ene-1β,3β,22α,26-tetraol l-O-β-D-xylopyranosyl- （1 → 3）-[α-h-rhamnopyranosyl-（1 → 2）]-[β-D-fueopyranoside and （25R） spirost-5-ene-3...Two new steroidal glucosides, 26-O-β-D-glucopyranosyl （25S）-furost-5-ene-1β,3β,22α,26-tetraol l-O-β-D-xylopyranosyl- （1 → 3）-[α-h-rhamnopyranosyl-（1 → 2）]-[β-D-fueopyranoside and （25R） spirost-5-ene-3β,14α-diol-3-β-O-β-L-rhanmopyranosyl- （1 → 2）-[β-D-xylopyranosyl（1 → 4）]-[-β-D-glucopyranoside, were isolated from the Ophiopogon japonicus （L.f.） Ker-Gaw. Their structures were elucidated by spectroscopic methods.展开更多
文摘The genus Lilium comprises 119 taxa,primarily native to temperate and alpine regions of the Northern Hemisphere,extending to the northern Philippines.In this study,we report the first occurrence of Lilium candidum L.in Morocco,specifically in the jbel Sidi Ali El Jawzi area,within the territorial commune of Asjen,Ouezzane Province(Pre-Rif region).During a botanical survey conducted in May 2022,a population of L.candidum was identified,marking its first recorded presence in the country.Morphological characteristics were analyzed and compared with existing descriptions in the literature to confirm species identification.The species was found in a humid microclimate with calcareous soils,suggesting specific ecological requirements that facilitated its establishment.This unexpected discovery raises several questions regarding its biogeographical history,potential introduction pathways,and adaptation mechanisms in the Moroccan environment.Given its limited distribution and ecological specificity,its conservation status should be carefully evaluated,as human activities,habitat disturbance,and climate change may pose significant threats.Further studies,including genetic analyses and ecological monitoring,are needed to determine its origin,assess population stability,and establish conservation strategies.The presence of L.candidum in the Pre-Rif region expands the known distribution of the species and highlights the importance of continuous botanical exploration in North Africa,particularly in understudied mountainous ecosystems.
文摘Two new C 27 steroidal glycosides, named ophiopojaponin A (1) and B (2), together with two known ones, were isolated from the tubers of the famous traditional Chinese herb Ophiopogon japonicus Ker_Gawl. The spectroscopic and chemical evidence revealed their structures to be pennogenin 3_O_[2′_O_acetyl_α_L_rhamnopyranosyl (1→2)]_β_D_xylopyranosyl (1→3)_β_D_glucopyranoside (1), 26_O_β_D_glucopyranosyl_(22ξ, 25R)_3β, 14α, 22ξ, 26_tetrahydroxyfurost_5_ene 3_O_α_L_rhamnopyranosyl (1→2)_β_D_glucopyranoside (2), diosgenin 3_O_[α_L_rhamnopyranosyl (1→2)]_β_D_xylopyrano_syl (1→3)_β_D_glucopyranoside (3) and ruscogenin 1_O_[α_L_rhamnopyranosyl (1→2)]_β_D_xylopyranosyl (1→3)_β_D_fucopyranoside (4).
基金Program for Changjiang Scholar and Innovative Team in University(Grant No.985-2-063-112).
文摘We investigated the chemical constituents of the fibrous root of Ophiopogon japonicus and their cytotoxicities against Hela and Hep2 cells.Ten compounds were purified by various chromatographic techniques.Their structures were identified as 2 - hydroxylophiopogonone A（1）,5,8-dimethoxy-6-methyl-7-hydroxy-3-（2 -hydroxy-4 -methoxybenzyl） chroman-4-one（2）,5,7- dihydroxy-6,8-dimethyl-3-（4 -hydroxybenzyl） chroman-4-one（3）,7,4 -dihydroxy-5-methoxyflavanone（4）,N-trans-coumaroyltyramine （5）,N-trans-coumaroyloctopamine（6）, N-trans-feruloyltyramine （7）, 4-hydroxycinnamic acid （8）, caffeic acid （9）, and ferulic acid （10） on the basis of spectroscopic analyses. Compounds 4, 6, 7, 9, 10 were obtained from this genus for the first time. The cytotoxic activities of 1, 2, 4, 5, 6, 7, 9 and 10 against Hela and Hep2 cells are described.
文摘Two new homoisoflavanones were isolated from the rhizomes of Polygonatum odoratum(Mill.) Druce and their structures were elucidated as(3R)-5,7-dihydroxy-8-methoxy-3-(4-methoxybenzyl)-6-methylchrom-an-4-one(1) and(3R)-5,7,8-trihydroxy-3-(4- hydroxybenzyl)-6-methylchroman-4-one(2),on the basis of spectral analysis.
文摘A new enolate derivative of furostanol glycoside, named asparagusin A, was isolated from the roots of Asparagus filicinus and established as 3-O-beta-D-xylopyranosyl(1-->4)-beta-D-glucopyranosyl (25S)-furost-20(22)-ene-3 beta, 26-diol 26-O-beta-D-glucopyranoside (1) by spectroscopic and chemical methods. Asparagusin A (1) exhibited a cytotoxic activity effect on PC12 cells.
基金This work was supported by the National Natural Science Funding of China(Grants 31170333 and 31570363).
文摘Phytochemicalinvestigation onthe whole plants of Ypsilandra yunnanensiswas carried out forthe firsttime andledtothe isolation of five new cholestanol glycosides,ypsiyunnosides A–E(1–5),and one known analogue.Their structures were determined mainly by detailed spectroscopic analysis,including extensive 1D and 2D NMR,MS and UV,as well as chemical methods.Among them,compound 1 possessed a rare 6/6/6/5/5 fused-rings cholestanol sketelon,which was identified as(23R,25R)-3β,16α,26-triol-16,23-cyclocholest-5,17(20)-dien-22-one.Their induced platelet aggregation activities and cytotoxicities were evaluated.Graphical Abstract Five new cholestanol glycosides,ypsiyunnosides A–E(1–5),were isolated from the whole plants of Ypsilandra yunnanensis.Compound 1 possessed a rare 6/6/6/5/5 fused-rings cholestanol sketelon.Their structures were elucidated by a combination of 1D and 2D NMR,MS and chemical analysis.
文摘Two new furostanol oligoglycosides named as aspacochioside A (1) and B (2) were isolated from the roots of Asparagus cochinchinensis (Lour.) Merr.. Their structures were elucidated to be 3-O-[{a-L-rhamnopyranosyl-(14)}{b-D-glucopyranosyl}]-26-O-[b-D-glucopy- ranosyl]-(25S)-5b-furostane-3b,22a,26-triol 1 and 3-O-[{a-L-rhamnopyranosyl-(14)}{b-D-glu- copyranosyl}]-26-O-[b-D-glucopyranosyl]-22a-methoxy-(25S)-5b-furostane-3b,26-diol 2 on the basis of spectroscopic techniques and chemical methods.
基金a key project of Chinese Academy of sciences. We are grateful to the members of Instrument Group of Phytochemistry Laboratory, K
文摘Two new C-27 steroidal: glycosides, named ophiopojaponin A(1)and B(2), were isolated from the tubers of famous traditional Chinese herb-Ophiopogon japonicus. The spectroscopic and chemical evidences revealed their structures to be Pennogenin 3-O-[2'-O-acetyl-alpha-L-rhamnopyranosyl (1-->2)]-beta-D-xylopyranosyl (1-->3)-beta-D-glucopyranoside (1) and 26-O-beta-D-glucopyranosyl-(22 xi, 25R)-3 beta, 14 alpha, 22 xi, 26-tetrahydroxyfurost-5-ene 3-O-alpha-L-rhamnopyranosyl (1-->2)-beta-D-glucopyranoside (2), respectively.
基金supported by National Natural Science Funding of China(No.31170333)the Natural Sci-ence Foundation of Yunnan Province(No.2009CC019)+1 种基金the West Light Foundation of the Chinese Academy of Sciences(No.2908025712W1)a fund(No.540806321211)of State Key Laboratory of Phytochemistry and Plant Resources in West China,Germplasm Bank of Wild Species and CAS Innovation Program of Kunming Institute of Botany.
文摘The whole plants of Ypsilandra thibetica have been analyzed as part of a systematic study on saponin constituents of medicinal plants.This has resulted in the isolation of two new bisdesmosidic furostanol saponins,named ypsilandroside P(1)and ypsilandroside Q(2),and one new pregnane glycoside,named ypsilandroside R(3),together with nine known steroidal glycosides.Their structures were elucidated on the basis of extensive spectroscopic analysis,including that of 2D NMR data,and the results of acidic hydrolysis.Ypsilandroside P(1)was cytotoxicity against two human tumor cell lines.
文摘Two new spirostanol saponins, (25S)-spirostane-1β,3β,5β-triol 3-O-β-D-glucopyrano- side 1 and rhodeasapogenin 3-O-β-D-glucopyranosyl-(1 → 4)-β-D-glucopyranoside 2, together with a known saponin, rhodeasapogenin 3-O-β-D-glucopyranoside 3, were isolated from the underground parts of Tupistra chinensis Bak.. Their structures were determined by spectroscopic analysis.
文摘The current state of coenotic populations of rare and endangered species of Uzbekistan-Tulipa lehmanniana Merckl. is given. Within the western part of the area (Kyzylkum desert) in different ecological and phytocenotic conditions, 8 coenotic populations of the species were identified. Based on the number of organism and population traits, the current state of coenotic populations of the species was evaluated. It was revealed that the vast majority of coenopopulations are in pessimal state. Coenopopulation only growing on the eastern part of the mountain Kuljuktau was assessed as optimal.
基金the National Natural Science Foundation of China (32170405)Yunnan Science and Technology Project (202105AE160006,2019FY003004) for partial financial support.
文摘Steroidal alkaloids possess the basic steroidal skeleton with a nitrogen atom in rings or side chains incorporated as an integral part of the molecule.They have demonstrated a wide range of biological activities,and some of them have even been developed as therapeutic drugs,such as abiraterone acetate(Zytiga®),a blockbuster drug,which has been used for the treatment of prostate cancer.Structurally diverse natural steroidal alkaloids present a wide spectrum of biological activities,which are attractive for natural product chemistry and medicinal chemistry communities.This review comprehensively covers the structural classification,isolation and various biological activities of 697 natural steroidal alkaloids discovered from 1926 to October 2021,with 363 references being cited.
基金This work is funded by the National Natural Science Funding of China(Grand No.31570363)the Key Research Program of the Chinese Academy of Sciences(Grand No.KSZDEW-Z-004-03-4)the Natural Science Foundation of Yunnan Province(Grand No.2015FA031).
文摘Phytochemical investigation of the rhizomes of Paris polyphylla var.stenophylla led to the isolation of two new highly oxygenated spirostanol saponins,named paristenosides A(1)and B(2),together with seven known compounds.Their structures were established mainly on the base of NMR spectroscopic techniques and mass spectrometry,as well as chemical methods.In addition,the cytotoxicity of the two new saponins was tested.Graphical Abstract Two new highly oxygenated spirostanol saponins,paristenosides A(1)and B(2),were isolated from the rhizomes of Paris polyphylla var.stenophylla.Their structures were established mainly based on NMR spectroscopic techniques and mass spectrometry,as well as chemical methods.
基金This work was supported by the National Natural Science Fundation of China (30100229) and Science and Technology Development Fundation of Shanghai China (01QB14051) and these supports are gratefully acknowledged.
文摘A new furostanoside, aspafilioside D (1) has been isolated from the root of Asparagus filicinus. Its structure was determined by spectral and chemical methods.
基金the National Natural Science Funding of China(No.31170333)the Natural Science Foundation of Yunnan Province(No.2009CC019).
文摘Two new monosaccharide steroidal saponins,named ypsilandroside S(1)and ypsilandroside T(2),have been isolated from the whole plants of Ypsilandra thibetica.Their structures were elucidated as heloniogenin 3-O-b-D-apiofuranoside(1)and pregna 5,16-dien-3b,12a-diol-20-one-3-O-b-D-apiofuranoside(2)by spectroscopic techniques(1D and 2D NMR,MS).Compounds 1 and 2 were tested for their inhibitory effects on lipopolysaccharide-induced nitric oxide production in RAW 264.7 cells.
基金the National Nature Science Foundation of China (No.30772890)the Program of Progressing Beijing New Medicine Subject Group (XK100270569)the Key Project of Chinese Ministry of Education (No.108132).
文摘Two new steroidal glucosides, 26-O-β-D-glucopyranosyl （25S）-furost-5-ene-1β,3β,22α,26-tetraol l-O-β-D-xylopyranosyl- （1 → 3）-[α-h-rhamnopyranosyl-（1 → 2）]-[β-D-fueopyranoside and （25R） spirost-5-ene-3β,14α-diol-3-β-O-β-L-rhanmopyranosyl- （1 → 2）-[β-D-xylopyranosyl（1 → 4）]-[-β-D-glucopyranoside, were isolated from the Ophiopogon japonicus （L.f.） Ker-Gaw. Their structures were elucidated by spectroscopic methods.
