共查询到20条相似文献,搜索用时 15 毫秒
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Yue Mao SHEN Hong Ping HE Yong Sheng ZHANG Bin Gui WANG Xiao Jiang HAO Laboratory of phytochemistry Department of Plant Biotechnology Kunming Institute of Botany Chinese Academy of Sciences Kunming Chinese Medical College of Yunnan Provin 《中国化学快报》2000,11(9)
Previous chemical investigations on SPiraea j'aponica and its varieties have led to thereport of 7 new atisane-type diterpenoids' and 30 new diterpene alkaloids of atisine- andhetisine-ace'. The chemotaxonomy of S. japonica complex was proposed based onthose chemical data3. A hypothetical pathway of the biosynthesis of atisine-typealkaloids was suggested to be formed from diterpene directly tO the correspoedngalkaloids through double Mannich reactions (unpublished data). In order to search f… 相似文献
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New Diterpenoid Alkaloids from Spiraea japonica var. Ovalifolia 总被引:2,自引:0,他引:2
Guo Ying ZUO Hong Ping HE Xin HONG Wei Ming ZHU Yi Ming HU Xiao Sheng YANG Xiao Jiang HAO* Laboratory of Phytochemistry Kunming Institute of Botany Chinese Academy of Sciences Kunming Kunming Hospital PLA Kunming 《中国化学快报》2001,(2)
In the investigation of the chemical constituents of Spireae japonica L. f. var. ovalifolia (Rosaceae), a shrub originated in Songming, Yunnan, five new diterpenoid alkaloids, 19-O-deethylspiramine N (1), deacetylspiramine S (2), spiramidine A (3), spiramidine B (4) and deacetylspiramine F (5), were isolated from aerial parts of the plant and structurally elucidated. Compound 1, a white amorphous powder with [(]+17.99 (c, 0.26, MeOH ), was determined to have the molecular formula of C20H… 相似文献
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GuoYingZUO HongPingHE BinGuiWANG XinHONG YiMingHU XiaoJiangHAO 《中国化学快报》2003,14(4):383-384
A new diterpenoid,15-0-accetylspiraminol(1),was isolated from the aerial parts of Spireae japonica L.f.var.ovalifolia.The structure was charaterized mainly based on spectral analysis. 相似文献
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Hai‐Yang Liu Suo Gao Ying‐Tong Di Chang‐Xiang Chen Yang Lü Li Zhang Qi‐Tai Zheng Xiao‐Jiang Hao 《Helvetica chimica acta》2007,90(7):1386-1390
A novel ent‐atisane lactone, spiramilactone E ( 1 ), was isolated from Spiraea japonica var. acuta Yu . Its structure was elucidated by extensive spectroscopic analyses, and unequivocally confirmed by single‐crystal X‐ray diffraction (Fig. 2). Compound 1 contains a γ‐lactone moiety between the 6‐OH function and C(20), and β‐configuration for the 7‐OH group, in contrast to known related diterpenes previously isolated from the S. japonica complex. 相似文献
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Five new C19 diterpene alkaloids, leucanthumsines A ( 1 ), B ( 2 ), C ( 3 ), D ( 4 ), and E ( 5 ), were isolated from the Chinese medicinal herb Aconitum sungpanense var. leucanthum, together with the known C19 diterpene alkaloids pseudaconine, neoline, 1‐O‐methyldelphisine, crassicaudine, chasmanine, talatisamine, indaconitine, ezochansmanine, and leueantine D. The structures of these new alkaloids were elucidated by HR‐MS and advanced NMR methods, including 1H‐ and 13C‐NMR (DEPT), 1H,1H‐COSY, HMQC, and HMBC experiments. 相似文献
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本文综述了我国特有的粉花绣线菊复合群7个变种化学与生物学研究,以新生物碱的发现为起点,从二萜与二萜生物碱化学结构、化学转化、化学合成、仿生合成与生源途径、植物化学分类与生物地理、生物活性等方面阐明了相关的科学问题,从宏观、微观层次形成了较系统的学术观点。 相似文献
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In continuation of our studies on Aconitum hemsleyanum Pritz.var. pengzhouense, two new norditerpenoid alkaloids, pengshenines A(1) and B(2),have isolated from the roots of the plants and their strucures were elucidated by 1D-and 2D-NMR. 相似文献
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Two new ent-kauranoids,named maoyecrystals A (1) and B(2),were isolated from the EtOAc extract of the dried leaves of Isodon japonica (Burman f.) Hara collected in Tongbai mountains ,Henan Province,Their structures were determined on the basis of spectral data,especially by 2D NMR. 相似文献
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Xiang‐Dong Qin Shu Yang Yan Zhao Li‐Xia Wang Fu‐Cai Ren Fei Wang 《Helvetica chimica acta》2016,99(3):237-240
Three new atisane diterpenoids, spiratisanins A – C ( 1 – 3 , resp.), featuring a phenylacryloxyl substituted ent‐atisane skeleton, were isolated from Spiraea japonica together with two known atisine diterpene alkaloids, spiramine A ( 4 ) and spiradine F ( 5 ). The structures of these new compounds were elucidated as (5β,7α,8α,9β,10α,12α,16β)‐16‐hydroxyatisan‐7‐yl (2E)‐3‐phenylprop‐2‐enoate ( 1 ), (5β,7α,8α,9β,10α,12α,16α)‐16‐hydroxyatisan‐7‐yl (2E)‐3‐phenylprop‐2‐enoate ( 2 ), and (5β,8α,9β,10α,12α,16β)‐16‐hydroxyatisan‐20‐yl (2E)‐3‐phenylprop‐2‐enoate ( 3 ) on the basis of spectroscopic analysis. 相似文献
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Guan Hu BAO Li Quan WANG Kin Fai CHENG Guo Wei QIN* Shanghai Institute of Materia Medica Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai Deprtment of Chemistry the University of Hong Kong Hong Kong 《中国化学快报》2002,13(10)
As a part of a continuing investigation on the active principles of Ericaceae plants, one new grayanane diterpene glucoside, rhodomoside A, was isolated from the n-BuOH fraction of the ethanol extracts of the roots of Rhododendron molle G. Don (Ericaceae). In this paper we describe the isolation and structural elucidation of rhodomoside A 1. Rhodomoside A 1, viscous syrup, has the molecular formula C26H42O10 based on HREIMS at m/z 514.2802 (calcd. 514.2778). Compound 1 gave positive … 相似文献
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Two New Norditerpenoid Alkaloids from Aconitum spicatum Stapf 总被引:4,自引:0,他引:4
LiMingGAO XiaoMeiWEI LiYANG 《中国化学快报》2005,16(4):475-478
Two new norditerpenoid alkaloids, spicatine A (1) and spicatine B (2) were isolated from the root of Aconitum spicatum. The new compounds were deduced on the basis of their spectral data (IR, HREIMS, EIMS, 1D, 2D-NMR). This is the first whole report on the isolation of diterpenoid alkaloids from the A.spicatum Stapf. 相似文献
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A new neolignan, 5-(3″-acetoxypropyl)-2-(4′-hydroxy-3′-methoxyphenyl)-7-methoxy-3-methylbenzofuran (1) along with nine analogues were isolated from the thorns of Gleditsia japonica var. delavayi by solvent extraction and repeated column chromatography. Their structures were elucidated by means of extensive spectroscopic analysis including 1D, 2D-NMR techniques and HR-ESIMS. All the isolates were reported for the first time from this species. 相似文献
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AiHuaZHAO ShengHongLI YongWeiLi QuanBinHUAN QinShiZHAO ZhongWenLIN HanDongSUN 《中国化学快报》2003,14(6):591-593
The structures of two new abietane quinones,named micranthins A and B,were determined to be 7α-methoxy-14,16-epoxy-8,13-abietabiene-11,12-dione(1) and 16-acetoxy-6,7-dehydroroyleanone (2) respectively,which were isolated from Isodon lophanthoides var.micranthus. 相似文献
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Guo‐Cai Wang Ying Wang Qian Li Jie‐Ping Liang Xiao‐Qi Zhang Xin‐Sheng Yao Wen‐Cai Ye 《Helvetica chimica acta》2008,91(6):1124-1129
Two new securinega‐type alkaloids and four known ones were isolated from the twigs and leaves of Flueggea virosa. The structures of the new compounds were elucidated by means of spectroscopic methods (UV, IR, HR‐ESI‐MS, and 1D‐ and 2D‐NMR), and the absolute configurations were assigned by CD spectra. The structures of the known compounds were identified by comparison of their physical and spectroscopic data with those reported in the literature. 相似文献
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Xiao Xia LIANC Dong Lin CHEN Feng Peng WANG 《中国化学快报》2006,17(11):1473-1476
Two new C19-diterpenoid alkaloids, davidisines A (1) and B (2) along with thirteen known alkaloids were isolated from the whole herb of Delphinium davidii Franch. Their structures were established by spectral methods, especially 2D NMR techniques. 相似文献
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Two new diterpenoids from Rabdosia japonica var.glaucocalyx 总被引:1,自引:0,他引:1
Two new diterpenoids, named glaucocalyxin F and glaucocalyxin X, respectively, were isolated from the whole plant of Rabdosia japonica (Burm. f.) Hara var. glaucocalyx (Maxim.) Hara. Their structures was established on the basis of spectral analysis. 相似文献
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A New Megastigmane Glucoside and Three New Flavonoid Glycosides from Spiraea prunifolia var. simpliciflora 下载免费PDF全文
A new megastigmane glucoside, simplicifloranoside ( 1 ), and three new flavonol glycosides, prunifolianosides A–C ( 2 – 4 , resp.), were isolated from the aerial parts of Spiraea prunifolia var. simpliciflora. In addition, fifteen known compounds, including five phenolic acids, three lignans, four flavonoids, one eugenol glycoside, and two alkyl‐primeverosides, were also identified. Their structures were elucidated on the basis of detailed spectroscopic analyses and acid hydrolysis. 相似文献