检索结果-南通市图书馆

Mahuangchiside, a New Flavone Glycoside from Chirita fimbrisepala

在线全文

学校读者我要写书评

暂无评论

chinese Chemical Letters 2000年第2期11卷 131-132页

作者： Li Dong ZHOU Jing Guang YU Jia GUO (institute of medicinal plant development, chinese academy of medical sciences & peking union medical college, beijing 100094) Inst. of medicinal plant development Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100094 China

A new flavone glycoside, named mahuangchiside, was isolated from the root of Chirita fimbrisepala Hand.-Mazz. The structure was elucidated as 5,4'-dihydroxy-6-methoxyflavone-7-O-beta-D-xylopyranosyl(1-->2)-beta-D-xylo... 详细信息

关键词： Chirita fimbrisepala Gesneriaceae mahuangchiside flavone flavonoid

THE　ISOLATION　AND　CHEMICAL　STRUCTURE　OF　ISOANNONARETICINS，A　PAIR　OF　2－EPIMERS　FROM　ANNONA　RETICULATA（ANNONACEAE）

在线全文

学校读者我要写书评

暂无评论

chinese Chemical Letters 1996年第1期7卷 19-22页

作者： Jing’Guang YU and Dong LIU(institute of medicinal plant development, chinese academy of medical sciences andpeking union medical college, beijing 100094) Inst. of medicinal plant development Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100094

A new acetogenin 2,4ets-cis-isoannonareticin (2-1) (2,4-cis-bullatacinone) and a known bullatacinone (2,4--trans-isoannonareticin) (2-2) were a pair of isomersepimeric at C-2 which were isolated as two pure natural compounds from Annonareticulata L. by using preparative TLC. Their structures and the relativestereochemistry were elucidated on the basis of the spectral analysis.

关键词： DENSICOMA ANNONACEAE ACETOGENINS POLYKETIDES BULLATA

A new Kaurane Derivative from Aralia Fargesii

在线全文

学校读者我要写书评

暂无评论

chinese Chemical Letters 1999年第8期10卷 673-674页

作者： Yu Mei ZHANG Jun Shan YANG Xu Dong XU (institute of medicinal plant development, chinese academy of medical Science peking union medical college, beijing 100094) Inst. of medicinal plant development Chinese Academy of Medical Science Peking Union Medical College Beijing 100094 China

A new ent-kaurane diterpene was isolated from the rhizome of Aralia fargesii. On the basis of chemical and spectral evidences, its structure was established as 16 alpha-hydroxy-17-isovaleroyloxy-ent-kauran-19-oic acid.

关键词： Aralia fargesii ent-kaurane 16 alpha-hydroxy-17-isovaleroyloxy-ent-kauran-19-oic acid

Cypripediquinone A, a new phenanthraquinone from Cypripedium macranthum (Orchidaceae)

在线全文

学校读者我要写书评

暂无评论

chinese Chemical Letters 2000年第1期11卷 37-38页

作者： Jian Hua JU Jun Shan YANG Jin LI Pei Gen XIAO (institute of medicinal plant development. chinese academy of medical sciences and peking union medical college, beijing 100094) Inst. of medicinal plant development Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100094 China

A new phenanthraquinone, cypripediquinone A, was isolated from the rhizome of Cypripedium macranthum ( Orchidaceae ) and its structure was established as 2,4,7-trimethoxy-9, 10- phenanthraquinone mainly by spectroscop... 详细信息

关键词： Cypripedium macranthum cypripediquinone A

New Flavonoid Glycoside from Thalictrum przewalskii

在线全文

学校读者我要写书评

暂无评论

chinese Chemical Letters 1999年第4期10卷 295-296页

作者： Shi Chun YU Qing Li WU Li Wei WANG Pei Gen XIAO(institute of medicinal plant development, chinese academy of medical sciences and peking union medical college, beijing 100094.) Inst. of medicinal plant development Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100094 China

A new flavonoid glycoside, 5, 7-dihydroxy-4'-methoxyflavonoid 7-Q-[6-O-(4-O-acetyl-alpha-L-rhamnosyl)-3-O-beta-D-glucosyl]-6-O-acetyl-beta-D-glucoside was isolated from Thalictrum przewalskii. Its structure was determ... 详细信息

关键词： Thalictrum Thalictrum przewalskii flavonoid glycoside 5, 7-dihydroxy-4 '-methoxyflavonoid 7-O-[6-O-(4-O-acetyl-alpha-L-rhamnosyl)-3-O-beta-D-glucosyl]-6-O-acetyl-beta-D-glucoside

Erythrinarbine,a Novel nor-A ring Erythrina Alkaloid from Erythrina arborescens

在线全文

学校读者我要写书评

暂无评论

chinese Chemical Letters 1999年第2期10卷 139-142页

作者： Dong Lei YU Jian GUO Li Zhen XU Shi Lin YANG(institute of medicinal plant development, chinese academy of medical sciencesand peking union medical college, beijing 100094) Inst. of medicinal plant development Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100094 China

Erythrinarbine 2, a novel alkaloid was isolated from the stem of Erythrina arborescens Roxb. Its structure and stereochemistry were elucidated on the basis of the spectral analysis (C-13 - H-1 COSY, H-1-H-1 COSY, NOES... 详细信息

关键词： Erythrina arborescens erythrinarbine nor-A ring erythrina alkaloid

Distribution of tanshinones in the genus Salvia (family Lamiaceae) from china and its systematic significance

在线全文

学校读者我要写书评

暂无评论

Journal of Systematics and Evolution 2010年第2期48卷 118-122页

作者： 1,2Min-Hui LI 1Yong PENG 1Pei-Gen XIAO 1(institute of medicinal plant development,chinese academy of medical Science and peking union medical college,beijing 100094,china) 2(Baotou medical college,Baotou 014060,china) (institute of medicinal plant development Chinese Academy of Medical Science and Peking Union Medical College Beijing 100094 China) (Baotou medical college Baotou 014060 China)

Salvia L.(family Lamiaceae),a large genus of over 1000 species,is widely distributed throughout tropical and temperate regions of the ***-four species are native to ***,there are many taxonomic uncertainties at the sub-generic *** are a class of secondary metabolites with a large variety of structures that have been used as chemotaxonomic markers at infra-and suprageneric *** the sake of further chemotaxonomic understanding of Salvia,the present study investigated the distribution of tanshinones,a group of biologically active diterpenes known to be present in some chinese members of the *** high-pressure liquid chromatography with a diode array detector,tanshinones in various Salvia species were determined and the distribution supported the circumscription of *** in the original sense of ***,the distribution of tanshinones provides a valuable chemotaxonomic tool for determining infrageneric differences within Salvia.

关键词： chemotaxonomy high-pressure liquid chromatography (HPLC) Salvia tanshinones

Muricatenol, a Linear Acetogenin from Annona muricata (Annonaceae)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

chinese Chemical Letters 2000年第3期11卷 239-242页

作者： De Yu LI Jing Guang YU Xiu Zhen LUO Lan SUN Shi Lin YANG (institute of medicinal plant development. chinese academy of medical sciences and peking union medical college. beijing 100094) Inst. of medicinal plant development Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100094 China

Muricatenol 1, a new acetogenin, has been isolated from the seeds of Annona muricata L.. Compound 1 is a C-37 acetogenin without any THF rings. with four hydroxyls and one double bond in the long aliphatic chain. The hydroxyls of 1 are located at C-4, C-10, C-18 and C-19. respectively. The vicinal diet at C-18/C-19 is threo-configuration, and the double bond at C-14/C-15 is cis-configuration.

关键词： Annona muricata Annonaceae acetogenins muricatenol

Studies on the Chemical Constituents of Lysimachia capillipes Hemsl

在线全文

学校读者我要写书评

暂无评论

chinese Chemical Letters 1998年第12期9卷 0-0页

作者： Chen XIE Li Zhen XU Bao Hua ZHAO and Shi Lin YANG(institute of medicinal plant development, chinese academy of medical sciences and pekingunion medical college, beijing 100094) Inst. of medicinal plant development Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100094 China

Eight compounds were isolated from the ethanolic extracts of Lysimachia capillipes Hemsl. They were identified as capilliplactone l, capillipnin 2,β-daucosterol 3, succinic acid 4, quercetin 5, 3',4',5,5',7-pentahydroxyflavone 6, quercetin-3-O-β-D-glucopyranoside 7 and kaempferol 8 on the basis of chemical and spectral methods. Among them, 1 and 2 were new, their structures were established as all-cis-5-deoxy-pentonic acid-y-lactone and 1,2,4,5-tetrahydroxy-3-n-pentylbenzen-2,4-di-O - D-glucopyranoside through their spectral data (1HNMR, 13CNMR, DEPT, 1H-1H COSY, 1H-13C COSY, HMBC etc).

关键词： Lysimachia lysimachia capillipes, capillplactone capillipnin