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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.

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

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.

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 1b, 4a 11a-trihydroxyeudesmane (1) and Yunnanensehedychetriol (2), were isolated from the fresh rhizomes of Hedychium Yunnanense gagnep .Their structures were elucidate... 详细信息

关键词： Hedychium yunnanene Zingiberaceae sesquiterpenoid trialcohol isomers 1b 4a 11a-trihydroxyeudesmane YunnanensehedychetrioH

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.

Termitomenins F and G,Two New Lignan Glucosides from Terminalia chebula var.tomentella(Kurz)C.B.Clarke

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Natural Products and Bioprospecting 2021年第5期11卷 565-572页

作者： Jun Yin Hong‑Tao Zhu Man Zhang Dong Wang chong‑ren yang Ying‑Jun Zhang State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201People’s Republic of China University of Chinese Academy of Sciences Beijing 100049People’s Republic of China Yunnan Key Laboratory of Natural Medicinal Chemistry Kunming Institute of BotanyChinese Academy of SciencesKunming 650201People’s Republic of China

The extensive chemical investigation on the branches and leaves of Terminalia chebula var.tomentella(Combretaceae)led to the isolation of two new lignan glucosides with a furofuran skeleton,termitomenins F(1)and G(2).In addition,19 known compounds including five lignan glucosides(3-7),six hydrolyzable tannins(8-13)and eight simple phenolics(14-21)were also identified.Their structures were determined by comprehensive spectroscopic analyses.It is noted that 8 and 9 were C-glycosidic hydrolyzable tannins with one hexahydroxydiphenoyl and one gallagyl group linked to an open-chain glucosyl C-1/O-2/O-3 and O-4/O-6,respectively,which were rarely found in plants.Nine known compounds,6-9,13,and 18-21,were procured from the titled plant for the first time,while 3-5,10-12 and 14-17 were also found in the fruits.Notably,the known hydrolyzable tannins 8-13 exhibited strongerα-glucosidase inhibitory activities with IC_(50) values ranging from 0.10 to 3.12μM,than the positive control,quercetin(IC_(50)=9.38±0.33μM).

关键词： Terminalia chebula var.tomentella Lignan glucosides Hydrolyzable tannins α-Glucosidase inhibitory activity Calculated ECD

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 μg/mL, 3.13 μg/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： HBeAg HBsAg 细胞培养余甘子没食子葡萄糖分泌酰基

Two New Indolyl Diketopiperazines,Trypostatins C and D from Aspergillus penicilliodes Speg.

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Natural Products and Bioprospecting 2018年第2期8卷 107-111页

作者： Han Zhang Hong-Tao Zhu Dong Wang chong-ren yang Ying-Jun Zhang State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of Chinese Academy of Sciences Beijing 100049China Yunnan Key Laboratory of Natural Medicinal Chemistry Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China

Twelve indolyl diketopiperazines 1-12 were isolated from the mycelia culture of Aspergillus penicilliodes Speg.,a dominant microorganism from the post fermentation process of ripe Pu-er tea.Their structures were elucidated by extensive spectroscopic methods.Among them,trypostatins C(1)and D(2)featuring with a rare methyl vinyl ketone side chain at C-2 are new compounds,while 3 and 4 were obtained for the first time from nature source.The isolates 3-12 did not show obvious cytotoxicities against five human cancer cell lines at a concentration of 40μM.

关键词： Aspergillus penicilliodes Speg. Indolyl diketopiperazines Trypostatins