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Polyoxypregnanes from the stems of Marsdenia tenacissima

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Chinese Chemical Letters 2007年第7期18卷 831-834页

作者： Qi Fa li Xiao ling Wang li sheng ding Chang Zhang Ethnic Pharmaceutical Institute Southwest University for Nationalities Chengdu 610041 China Chengdu Institute of Biology Chinese Academy of Sciences Chengdu 610041 China

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）.

关键词： Marsdenia tenacissima Polyoxypregnane 11αt,12β-Di-O-tigloyl-tenacigenin B Tenacigenoside E

A New Daphnane Diterpene from Daphne tangutica

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Chinese Chemical Letters 2006年第1期17卷 38-40页

作者： li PAN Xiao Feng ZHANG Hai Feng WU li sheng ding Chengdu Institute of Biology Chinese Academy of Sciences Chengdu 610041 The Northwest Plateau Institute of Biology Chinese Academy of Sciences Xining 810001

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.

关键词： Daphne tangutica daphnane diterpene 1 2α-dihydro-20-palimoyldaphnetoxin

Two new eupodienone lignans from Gymnotheca chinensis

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Chinese Chemical Letters 2014年第3期25卷 463-464页

作者： Shi-Ji Xiao Fang Chen li-sheng ding Yan Zhou Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization Chengdu Institute of BiologyChinese Academy of Sciences College of life Science Sichuan University

Two new eupodienone lignans, named gymnothelignan T （1） and gymnothelignan U （2） were isolated from the whole plants of endemic medicinal plant of Gymnotheca chinensis （Saururaceae）. The structures of the new compounds were elucidated by means of HRMS, 1D and 2D NMR. Compound I was tested for cytotoxic activity in HCT15, HCT116, A549, MCF-7 and HepG2 cells and exhibited no appreciable activity against these tested cell lines with IC50 values above 50 μmol/L.

关键词： Gymnotheca chinensisSaururaceaeEupodienonelignan

Two New Norditerpenoid Alkaloids of Aconitum nagarum

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Chinese Chemical Letters 2005年第8期16卷 1043-1046页

作者： Fan ZHANG Shu lin PENG Fan LUO li sheng ding Chengdu Institute of Biology Chinese Academy of Sciences Chengdu 610041 College of life Science and Technology Southwest University for Naiionalities Chengdu 610041

Two new norditerpenoid alkaloids were isolated from the roots of Aconitum *** structures were elucidated as 13-hydroxyfranchetine 1 and 10-dehydroxyflavaconitine 2,respectively, by 1D and 2D NMR experiments.

关键词： Aconitum nagarum norditerpenoid alkaloid 13-hydroxyfranchetine 10-dehydroxy flavaconitine.

Two New Steroidal Saponins from Diuranthera inarticulata

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Chinese Chemical Letters 2001年第2期12卷 143-144页

作者： Wei li YANG Jun TIAN Qiang ZHANG Shu lin PENG li sheng ding Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041 School of Pharmacy West China University of Medical SciencesChengdu 610041

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.

关键词： Diuranthera inarticulata liliaceae steroidal saponin diuranthosides D and E

A Novel Ursane Triterpene from Rubus swinhoei

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Chinese Chemical Letters 2001年第3期12卷 245-246页

作者： Wei Quan ZHAO li sheng ding Qiang ZHANG Ming Kui WANG Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041 West China University of Medical Sciences Chengdu 610041

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... 详细信息

关键词： Rubus swinhoei swinhoeic acid

Two new neolignans from Gymnotheca involucrata

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Chinese Chemical Letters 2017年第5期28卷 1049-1051页

作者： Shi-Ji Xiao Mao-sheng Zhang Da-Le Guo Fang Chen Yan Zhou li-sheng ding School of Pharmacy Zunyi Medical University Chengdu Institute of Biology Chinese Academy of Sciences College of life Science Sichuan University

Two new biphenyl butyl neolignan derivatives,named gymnothebutyllignans A（1） and B（2）,were isolated from the whole parts of endemic medicinal plant of Gymnotheca involucrata（Saururaceae）.The structures of the new compounds were elucidated by extensive NMR and MS data,and the absolutely configuration of compound 1 was confirmed by X-ray crystal diffraction analysis.

关键词： Gymnotheca involucrata Saururaceae Neolignan Gymnothebutyllignan Absolutely configuration

Selective extraction of flavonoids from Ginkgo biloba leaves using human serum albumin functionalized magnetic nanoparticles

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Chinese Chemical Letters 2013年第12期24卷 1099-1102页

作者： Xiao-Yun Ren Ying Xue Jian liang li-sheng ding Xun liao Chengdu Institute of Biology Chinese Academy of Sciences

In a novel procedure, human serum albumin timctionalized magnetic nanoparticles （ HSA-MNPS ） were used to selectively extract nine flavonoids in the extract of Ginkgo biloba leaves. The chemical structures of those flavonoids were characterized with high performance liquid chromatography coupled with mass spectrometry （HPLC-MS）. The selective extraction with HSA-MNPs coupled with structural elucidation with HPLC-MS shows powerful potential for analysis of bioactive components in traditional Chinese medicines.

关键词： Ginkgo biloba Flavonoids HSA-MNPs High performance liquid chromatography Mass spectrometry

Two New Sesquiterpenoid Glucosides from the Aerial Parts of Saussurea involucrate

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Journal of Integrative Plant Biology 2007年第5期49卷 609-614页

作者： Xlao-ling Wang Suo-Lang Gesang Wei Jiao Xun liao li-sheng ding Chengdu Institute of Biology the Chinese Academy of Sciences Chengdu 610041 China Institute of National Medicine Southwest University for Nationalities Chengdu 610041 China Tibet Autonomous Region Institute for Drug Control Lasa 850000 China

Two new sesqulterpenoid glucosides, namely α-hydroxycostic acid 6-β-D-glucopyranoside （compound 1） and 11 βH-11,13-dlhydrodehydrocostuslactone 8α-O-（6＇-acetyl）-β-D-glucopyranoside （compound 2）, along with 11 known sesqulterpenoids （compounds 3-13） were isolated from the aerial parts of Saussurea involucrate （Kar. et Kir.） Sch.- BIp. The structures of the new sesquiterpenoid glucosides were established by one- and two-dimensional nuclear magnetic resonance and mass spectrometry analysis.

关键词： 6α-hydroxycostic acid 6-β-D-glucoside 11 βH-11,13-dihydrodehydrocostuslactone 8α-O-(6'-acetyl)- α-D-glucoside Saussureainvolucrate sesquiterpenoid glucoside.