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Novel Neolignan from Penthorum chinense

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Journal of Integrative Plant Biology 2007年第11期49卷 1611-1614页

作者： Tao zhang Yao-Ming Chen guo-lin zhang Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China Graduate University of Chinese Academy of Sciences Beijing 100039 China Chengdu Institute of Biology Chinese Academy of Sciences Chengdu 610041 China

A new neolignan （7＇E）-2＇,4,8-trihydroxy-3-methoxy-2,4＇-epoxy-8,5＇-neolign-7＇-en-7-one （1） was isolated from the whole plants of Penthorum chinense Pursh, along with Iupeol （2）, betulinic acid （3）, glyceryl monopalmitate （4）, β-sitosterol （5）, palmitic acid （5）, ursolic acid （7）, 2β,3β,23-trihydroxy-urs-12-ene-28-oic acid （8）, glyceryl monolaurate （9）, scopoletin （10）, （-）syringaresinol （11）, 9,9＇-O-diferuIoyl-（-）-secoisolariciresionl （12）, pinocembrin （13）, apigenin （14）, kaempferol （15）, Iuteolin （16）, β-daucosterol （17）, quercetin （18）, 1-O-（β-D-glucopyranosyl）-（2S, 2＇R, 3R,4E,8E）-2-（2＇-hydroxyhexadecanoy- lamino）-4,8-octdecadiene-1,3-diol （19）, gallic acid （20）, pinocembrin-7-O-β-D-glucoside （21）, and quercetin-3-O-β-D- glucoside （22）. The structures of these compounds were elucidated on the basis of chemical and spectral evidence.

关键词： Gansu neolignan Penthorum chinense pinocembrin quercetin.

Diphenyl Ether Glycoside from the Stems of Ilex litseaefolia Hu et Tang

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Journal of Integrative Plant Biology 2007年第4期49卷 452-454页

作者： Yan-Hua Xiao Ai-Lian zhang guo-lin zhang Chengdu Institute of Biology the Chinese Academy of Sciences Chengdu 610041 China School of Chemical Engineering and Pharmacy Wuhan Institute of Technology Wuhan 430073 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China School of Food and Pharmaceutical Sciences Zhejiang Forestry College Linan 311300 China

New diphenyl ether glycoside, ilexfoliaoside, was isolated from the stems of Ilex litseaefolia Hu et Tang, along with esculetin and 3,4-dimethoxybenzylacetic acid. The structure of ilexfoliaoside was determined as 6,2＇-dihydroxy-4, 4＇-di-vanilloyloxymethyl-1,1＇-diphenyl ether 2-O-β-D-glucopyranoside on the basis of chemical and spectroscopic evidence.

关键词： benzyl vanilloate diphenyl ether ilexfoliaoside Ilex litseaefolia.

A New Monoterpene Glycoside from Swertia punicea

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Chinese Chemical Letters 2000年第8期11卷 709-710页

作者： Xin MING Ming Hua QIU Rui lin NIE guo lin zhang Kunming Institute of Botany Chinese Academy of SciencesKunming 650204 Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041

A new monoterpene glycoside, 2,6-dimethyl-2E,6E-octadienoic acid 1,6'-lactone 8-beta-D-glucopyranoside, was isolated from Swertia punicea, accompanying with six known compounds 1-O-primeverosyl-3,7-dimethoxy-8-hydroxyxanthone, 1-O-primeverosyl-3,7,8-tri-methoxyxan-thone, epi-eustomoside, 1-hydroxy-3,7,8-trimethoxyxanthone, 1,8-dihydroxy-3,7-dimethoxy xanthone and isovitexine. Their structures were elucidated based on spectral evidence.

关键词： Swertia punicea monoterpene glycoside xanthone epi-eustomoside isovitexine

Regioselective protection of 10-deacetylbaccatin Ⅲ and semi-synthesis of paclitaxel

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Chinese Chemical Letters 2008年第2期19卷 130-132页

作者： zhang Hu Li Li Ou guo lin zhang Yong Ping Yu College of Pharmaceutical Science Zhejiang University Hangzhou 310058 China College of Science Guangdong Ocean University Zhanjiang 524088 China

Semi-synthesis of paclitaxel was achieved in four steps from 10-deacetylbaccatin HI （10-DAB HI）. The key steps are the regioselective protection at the hydroxyl group at C-7 of 10-DAB HI, using 1,1′-thiocarbonyldiimidazole as a selective reagent, and the deprotection of the protected paclitaxel with a mixture of p-toluenesulfonic acid and 0.1 mol/L aqueous hydrochloride.

关键词： Paclitaxel Protecting group 1,1′-Thiocarbonyldiimidazole Regioselective Semi-synthesis

A New Quinolizidine Alkaloid from Boehmeria siamensis

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Chinese Chemical Letters 2001年第4期12卷 337-338页

作者： Ying Gang LUO Bo Gang LI guo lin zhang Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041

A new quinolizidine alkaloid. 3-(4-hydroxyphenyl)-4-(3-methoxy-4-hydroxyphenyl)-3,4-dihydroquinolizidine (1). was isolated from the ethanol extract of the whole plants of Boehmeria siamensis Craib. Its structure was e... 详细信息

关键词： Boehmeria siamensis Craib Urticaceae 3-(4-hydroxyphenyl)-4-(3-methoxy-4- hydroxyphenyl)-3 4-dehydroquinolizidine.

Convergent synthesis of second generation CCK-functional dendrimers

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Chinese Chemical Letters 2009年第1期20卷 9-12页

作者： He Gu guo Li Cheng lin zhang Yu Jiang Bo Key Laboratory of Drug Targeting of Ministry of Education and Department of Medicinal Chemistry West China School of Pharmacy Sichuan University Chengdu 610041 China

This paper describes the facile synthesis and characterization of novel dendrimers bearing 9 and 12 CCK peptide fragments on the surface by a convergent method. The structures of dendrimers are characterized by NMR an... 详细信息

关键词： Dendrimers CCK Synthesis

A New Norditerpene from Miliusa balansae Finet et Gagnep

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Chinese Chemical Letters 2001年第3期12卷 247-248页

作者： Rui WU Qi YE Neng Yu CHEN guo lin zhang Chengdu Institute of Biology the Chinese Academy of SciencesChengdu 610041 Department of Chemistry and Chemical Industry Lanzhou UniversityLanzhou 730000 Technical Centre Hua Sheng Group Co.LtdChengdu 610075

A novel norditerpene, miliusate (1), was isolated from Miliusa balansae et Gagnep. Its structure was elucidated by spectral analysis.

关键词： Millusa balansae Finet et Gagnep miliusate

Two New Compounds from Melanosciadum pimpinelloideum H. Boiss

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Chinese Chemical Letters 2001年第4期12卷 333-334页

作者： Yi ZHOU guo lin zhang Bo Gang LI Yao Zu CHEN Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041 Chemistry Department Zhejiang UniversityHangzhou 310027 National Key Laboratory of Applied Organic Chemistry Lanzhou 730000

Two new compounds, melanochromone and 2-ethoxyl-2-(4-hydroxyphenyl)ethanol. were isolated from the whole plants of Melanosoiadum pimpinelloideum II. Boiss. The known compounds isolated were 1-(4-hydroxyphenyl)-1.2ethanediol. tymine. cimifugin, umtatin. bergenin. daucosterol and stigmasterol. Their structures were determined on the basis of spectral data.

关键词： Melanosciadum pimpinelloidum melanochromone 2-ethoxyl-2-(4-hydroxyphenyl) ethanol

Chemical Constituents of Phacellaria compressa Benth.

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Journal of Integrative Plant Biology 2006年第2期48卷 236-240页

作者： Xiu-Yun zhang Bo-Gang Li Min Zhou Xiao-Hong Yuan guo-lin zhang Chengdu Institute of Biology the Chinese Academy of Sciences Chengdu 610041 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China College of Life Sciences Northwest Agricultural University Yangling 712100 China

Two new compounds, 1-（3-methoxy-4-hydroxyphenyl）-3-（3,5-dimethoxy-4-hydroxyphenyl）-propane （1） and 5, 7, 3＇-trlmethyoxyflavan-4＇-O-β-D-glucopyranoslde （2） were Isolated from the ethanol extract of the dried aerial parts of Phacellarla compressa Benth., together with 2,3-bis[（4-hydroxy-3,5-dimethoxyphenyl）-methyl]-1,4- butanedlol （3）, ethyl 3,4,5-trlhydroxybenzoate （4）, methyl 3, 4, 5-trlhydroxybenzoete （5）, β-sltoeterol （6）, 5, 7, 3＇, 4＇- tetrahydroxyfiavan （7）, lupeol （8）, zhebelreslnol （9）, quercetln-3-O-α-L-rhamnopyranoslde （10）, （＋）-cetechin （11）, betulln （12）, β-daucosterol （13）, （＋）-sydngareslnol （14）, scopoletln （15）, and proxlmadlol （16）. The structures of these compounds were determined by spectral evidence or by comparing them with authentic samples. Compound 9 showed α-amylase Inhibitory activity of 57.55% at a concentration of 50 μg/mL.

关键词： α-amylase 1,3-diphenyl-propane flavan-4'-O-β-D-glucopyranoside Phacellaria compressa.