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Minor antifungal aromatic glycosides from the roots of Gentiana rigescens(Gentianaceae)

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Chinese Chemical Letters 2009年第10期20卷 1215-1217页

作者： Min Xu chong ren yang Ying Jun Zhang State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of Sciences Kunming 650204 China

Two new phenolic glycosides, 2,3-dihydroxybenzoic acid methyl ester 3-O-β-o-glucopyranosyl-（1-6）-β-D-glucopyranoside （1） and 2,5-dihydroxylbenzofuran 5-O-β-D-xylopyranosyl-（1-6）-O-β-D-glucopyranoside （2）, were isolated as the minor chemical constituents from the roots of Gentiana rigescens, along with 15 known compounds. Their structures were elucidated by detailed spectroscopic analysis, including 1D, 2D NMR and chemical method. All of these compounds were isolated for the first time from the title plant. Moreover, compounds 1 and 2 were tested for the antifungal activities on three plant pathogens Peronophythora litchi, Glomerella cingulata, and Glorosprium musarum.

关键词： Gentiana rigescen Phenolic glycosides Anfifungal activity Plant pathogen

A New Pregnane Glycoside from Fermented Leaves of Agave americana

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Chinese Chemical Letters 2002年第12期13卷 1189-1192页

作者： Jian Ming JIN Xi Kui LIU chong ren yang State Key Laboratory of Phytochemistry and Plant Resources of West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650204

A new minor pregnane glycoside was isolated from the fermented leaves of Agave americana. Its structure was elucidated as (20S)-5a-pregnane-3? 20-diol 20-O--D-glucopyrano- side (1) by spectral methods.

关键词： Agave americana L. pregnane glycoside.

Monepaloside K, a New Triterpenoid Saponin from Morina nepalensis var. alba Hand. - Mazz.

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Chinese Chemical Letters 2002年第3期13卷 251-252页

作者： Rong Wei TENG De Zu WANG chong ren yang Kunming Institute of Botany CASKunming 650204

One new triterpenoid saponin, monepaloside K (1) was isolated from the water-soluble part of the whole plant of a famous Tibetan medicinal herb, morina nepalensis var. alba Hand.-Mazz.. Its structure was determined to be 3-O-a-L-arabinopyranosyl-(13)-b-D- xylopyranosyl siaresinolic acid on the basis of spectroscopic evidences, especially 2D NMR techniques.

关键词： Morina nepalensis var. alba Dipsacaceae monepaloside K 2D NMR techniques.

A Novel Hexanordammarane Glycoside from the Roots of Panax notoginseng

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Chinese Chemical Letters 2001年第1期12卷 59-62页

作者： Hai Zhou LI Rong Wei TENG chong ren yang Kunming Institute of Botany Chinese Academy of SciencesKunming 650204

Notoginsenoside R-111, a novel hexanordammarane glycoside was isolated from the roots of Panax nototginseng, as a minor constituent. Its structure was determined as 6-O-(beta -D-glucopyranosyl)-3 beta ,6 alpha ,12 bet... 详细信息

关键词： notoginsenoside R-10 nortriterpenoid saponin Panax notoginseng

New Sesquiterpenoids from Hedychium yunnanense gagnep

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Chinese Chemical Letters 2000年第11期11卷 1009-1012页

作者： Xiu Hua LIU Dong Bao ZHAO chong ren yang Han Qing WANG Chemistry and Chemical Engineering College of Henan University Kaifeng 475001 Phytochemistry Laboratory Kunming Instute of BotanyC.A.S.Kunming 650204 Lanzhou Institute of Chemical Physics C.A.SLanzhou 730000

Two new sesquiterpenoid trialcohol isomers named 1 beta, 4 alpha 11 alpha -trihydroxyeudesmane (1) and Yunnanensehedychetriol (2), were isolated from the fresh rhizomes of Hedychium Yunnanense gagnep. Their structures... 详细信息

关键词： Hedychium yunnanene Zingiberaceae sesquiterpenoid trialcohol isomers 1 beta,4 alpha,11 alpha-trihydroxyeudesmane Yunnanensehedychetriol

Tsaokoin,a New Bicyclic Nonane from Amomum tsao-ko

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Chinese Chemical Letters 2001年第3期12卷 227-230页

作者： Qi Shi SONG Rong Wei TENG Xi Kui LIU chong ren yang Kunming Institute of Botany Chinese Academy of SciencesKunming 650204 Xishuangbanna Tropical Botanic Garden Chinese Academy of SciencesKunming 650223

7α-Hydroxy-8β,9β-H- cis- bicyclo[4,3,0]non-4-ene-4-aldehyde, a nonane compound with novel skeleton, named tsaokoin, was isolated from the fruits of Amomum tsao-ko. Its structure was established on the basis of spec... 详细信息

关键词： 7α-Hydroxy-8β 9β-H- cis- bicyclo[4.3.0]non-4-ene-4-aldehyde tsaokoin Amomum tsao-ko bicyclononane

Two New Steroidal Glycosides from Fermented Leaves of Agave americana

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Chinese Chemical Letters 2002年第7期13卷 629-632页

作者： Jian Ming JIN Xi Kui LIU Rong Wei TENG chong ren yang Kunming Institute of Botany Chinese Academy of SciencesKunming 650204

Two new spirostanol glycosides named agamenoside A and B, were isolated from the fermented leaves of Agave americana. Their structures were elucidated as (23S, 25R)-5a -spirostan-3b, 6a, 23-triol 3-O-a-L-rhamnopyranosyl-(13)- b-D-glucopyranosyl-(12)-[b-D- xylopyranosyl-(13)]-b-D-glucopyranosyl-(14)-b-D-galactopyranoside (1) and (25R)-5a-spiro- stan-3b, 6a-diol 3-O-b-D-glucopyranosyl-(12)-[ b-D-xylopyranosyl-(13)]- b-D-glucopyra- nosyl-(14)- b-D-galactopyranoside (2) by a combination of chemical and spectral methods.

关键词： Agave americana L. steroidal glycosides agamenosides.

Effects of 1,2,4,6-tetra-O-galloyl-β-D-glucose from P. emblica on HBsAg and HBeAg Secretion in HepG2.2.15 Cell Culture

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Virologica Sinica 2010年第5期25卷 375-380页

作者： yang-fei XIANG Huai-qiang JU Shen LI Ying-jun ZHANG chong-ren yang Yi-fei WANG Biomedicine Research ＆ Development Center Jinan University Guangzhou 510630 China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China

A polyphenolic compound, 1,2,4,6-tetra-O-galloyl-β-D-glucose （1246TGG）, was isolated from the traditional Chinese medicine Phyllanthus emblica L. （Euphorbiaceae） and assayed for its potential as an anti-hepatitis B virus （HBV） agent. The cytotoxicity of 1246TGG on HepG2.2.15 as well as HepG2 cells was determined by observing cytopathic effects, and the effects of 1246TGG on secretion of HBsAg and HBeAg in HepG2.2.15 cells were assayed by enzyme immunoassay. Results indicates that treatment with 1246TGG （6.25 ~tg/mL, 3.13 ~tg/mL）, reduced both HBsAg and HBeAg levels in culture supernatant, yet the inhibitory effects tend to decline with the assay time. This study provides a basis for further investigation of the anti-HBV activity and possible mechanism of action of 1246TGG

关键词： 1,2,4,6-tetra-O-galloyl-13-D-glucose (1246TGG) Phyllanthus emblica Euphorbiaceae HBV Antiviral agents

Two New Dammarane Glycosides from the Acid Hydrolysis Product of Panax Notoginseng

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Chinese Chemical Letters 2001年第3期12卷 239-242页

作者： Rong Wei TENG Hai Zhou LI Xue Mei ZHANG Xi Kui LIU De Zu WANG chong ren yang Kunming Institute of Botany Chinese Academy of SciencesKunming 650204

Two new dammarane glycosides named notoginsenoside T-1 and T-2 were isolated from the mild acid hydrolysis products of the root saponins of Panax notoginseng. On the basis of spectroscopic evidences, their structures were elucidated to be 6-O-beta -D-glucopyranosyl-24(25)-epoxy-3 beta ,6 alpha ,12 beta ,23 xi -tetrahydroxydammar-20(22)(E)-ene 1 and 6-O-beta -D-glucopyranosyl-24(25)-epoxy-23 xi -methoxyl-3 beta ,6 alpha ,12 beta -trihydroxydamm-ar-20(22)(E)-ene 2, respectively.

关键词： Panax notoginseng dammarane glycosides notoginsenoside T1 T2.