共查询到20条相似文献,搜索用时 31 毫秒
1.
我们曾从甘肃省漳县采集的长梗千里光全草中分离并鉴定出两个呋喃雅槛兰型倍半萜. 在此基础上, 本文对其脂溶性化学成分进行深入研究, 除了发现倍半萜外, 又分离并鉴定出2个呋喃雅槛兰型倍半萜. 通过IR, UV, MS, CD和NMR等数据分析, 确定了4个化合物的结构, 其中, 化合物3首次在长梗千里光中分离得到, 化合物4是一种新化合物, 通过圆二光谱及核磁共振和NOE差谱研究其立体化学结构, 并按Dreiding models构筑该化合物分子的立体化学结构, 确定该化合物为Non-steroid型构象. 相似文献
2.
ThechemicalstudiesofLigulariasongaricahavenotbeenreportedtillnow.Inourpreliminarystudyontherootsofthisplant,anewbisabolanesesquiterpenewasobtainedanditsstructurewasidentifiedasSp-acetoxy-40,8-diangeloyloxy-26,3p,;10,Ildiepoxy-bisabola-7(14)-ene1.,Com... 相似文献
3.
Jun Xi LIU Xiao Ning WEI Yan Ping SHI Run Hua LU 《中国化学快报》2005,16(12):1618-1620
Two new eremophilane sesquiterpene lactones, 1β-angeloyloxy-6β, 10β-dihydroxy-8β- methoxyeremophila-7(ll)en-8α,12-olide and 1β-angeloyloxy-6β,10α-dihydroxy-8α-methoxyeremo- phila-7( 11)en-8β, 12-olide were isolated from the extract of the whole plant of Ligularia myriocephala Ling. Their structures and stereochemistry were elucidated by various spectroscopic methods including intensive 2D-NMR techniques (COSY, gHMQC, gHMBC and ^1H-^1H NOESY) and HR-ESIMS. 相似文献
4.
A new sesquiterpene:11,12,13-trihydroxy-4(15),7(8)-eudesmdien-9-one was isolated from Saussurea parviflora. The structure was elucidated on the basis of spectral evidence. 相似文献
5.
Sesquiterpene Lactone Glycosides from Carpesium macrocephalum 总被引:1,自引:0,他引:1
Two new sesquiterpene lactone glycosides were isolated from the seeds of Carpesium meacrocephalum. Their structures were elucidated as 2α-O-β-D-glucopyranosy-5α,11αH-eudesma-4(15)-en-12,8β-olide and 2α-O-β-D-glucopyranosy-5αH-eudesma-4(15),11(13)-dien-12,8β-olide by spectral methods (HRMS,1D and 2D NMR). 相似文献
6.
森林千里光化学成分的研究 总被引:1,自引:2,他引:1
呋喃雅槛蓝型倍半萜广泛存在于千里光属植物中.目前已研究的该属植物大都含有此类成分,关于森林千里光(senecio nemorensis L.)中的此类倍半萜成分,Novotny等人曾从该植物的两个亚种中分别分离到5种和1种呋喃雅槛蓝型倍半萜.对于生长在我国的森林千里光中的此类成分的研究迄今未见报道.我们从甘肃漳县采集的森林千里光的全草中分离出3种此类成分S_1、S_2和S_3.经IR、UV、MS和NMR光谱确定S_3是一种新化合物. 相似文献
7.
Two new compounds,senarguines A and B,were isolated from Senecio argunensis.They were respectively identified as (Z)-3-ethylidene-9-hydroxyl-9-methyl-6,7-dioxaspiro [4.4]nonane-5,8--dione (1) and 3,6,6-trimethyl 6,7,8-tetrahydronaphtha-[1,2b]furan (2) on the basis of spectral data. 相似文献
8.
A New Picrotoxane Type Sesquiterpene from Dendrobium densiflorum 总被引:3,自引:0,他引:3
JianTANG QunFangLIU JingQiuDAI WeiMinZHAO 《中国化学快报》2004,15(1):63-64
A new picrotoxane type sesquiterpene named dendrodensiflorol has been isolated from the stems of Dendrobium densiflorum. Its structure was identified on the basis of spectroscopic method. 相似文献
9.
YingWANG ChengShahYUAN XiaoLongWANG ZhongJianJIA 《中国化学快报》2003,14(8):818-819
A new sesquiterpene and a new norsesquiterpene were isolated from the whole plant of Cacalia deltophylla (Maxim) Mattf. Their structures were elucidated as deltocacalone (1) and deltonorcacalol (2) by spectroscopic methods including 2D NMR. 相似文献
10.
Sesquiterpene Lactones from Elephantopus scaber 总被引:4,自引:0,他引:4
QiaoLiLIANG ZhiDaMIN 《中国化学快报》2002,13(4):343-344
A new germacranolide sesquiterpene lactone, isoscabertopin, was isolated from Elephantopus scaber together with the known scabertopin. Their structures were determined by spectroscopic methods. 相似文献
11.
JianXinPU JingFengZHAO XiaoDongYANG ShuangXiMEI HongBinZHANG LiangLI 《中国化学快报》2004,15(12):1454-1456
A new sesquiterpene lactone, Ainsliaolide A, was isolated from Ainsliaea bonatii. The structure was determined on the basis of spectral data. 相似文献
12.
MinYANG ZhongJianJIA 《中国化学快报》2004,15(4):417-418
A new guaianolide was isolated from Saussurea macrota.Its structure was elucidated by NMR spectroscopic and X-ray diffraction methods. 相似文献
13.
XingGenTAN PeiCAO ShuLinPENG LiShengDING 《中国化学快报》2005,16(7):915-917
A new sesquiterpene with a unusual modified germacrane skeleton was isolated from the ethanol extracts of the roots of Biondia hemsleyana and its structure was elucidated as 3β-hydroxy-4,14-cyclogermacra-11-en-9-one by the spectroscopic methods and X-ray crystallography. 相似文献
14.
Yan‐Hui Li Yan Zhou Gesang Suolang Ciren Bianba Li‐Sheng Ding Hui Feng 《Helvetica chimica acta》2011,94(3):474-480
From the aerial parts of Senecio dianthus, four new eremophilenolides ( 1 – 4 , resp.) and one new eremophilenolide alkaloid ( 5 ), of the relatively uncommon eremophilenoid‐type sesquiterpenoid lactones, were isolated together with three known sesquiterpenoid lactones, 10β‐hydroxyeremophil‐7(11)‐en‐12,8α‐olide ( 6 ), 8β,10β‐dihydroxyeremophil‐7(11)‐en‐12,8α‐olide ( 7 ), and 10α‐hydroxy‐1‐oxoeremophila‐7(11),8(9)‐dien‐12,8‐olide ( 8 ). On the basis of IR, MS, and NMR data, particularly 2D‐NMR analyses, the structures of the new compounds were established as: 2β‐(angeloyloxy)‐10β‐hydroxyeremophil‐7(11)‐en‐12,8α‐olide ( 1 ), 6β‐(angeloyloxy)‐10β‐hydroxyeremophil‐7(11)‐en‐12,8α‐olide ( 2 ), 2β‐(angeloyloxy)‐8β,10β‐dihydroxyeremophil‐7(11)‐en‐12,8α‐olide ( 3 ), 2β‐(angeloyloxy)‐8α‐hydroxyeremophila‐7(11),9(10)‐dien‐12,8β‐olide ( 4 ), and 8β‐amino‐10β‐hydroxyeremophil‐7(11)‐en‐12,8α‐olide ( 5 ). In addition, the relative configuration of 1 was corroborated by X‐ray diffraction analysis. 相似文献
15.
Fan‐Jun Meng Hong Zhao Wei‐Dong Xie Rui‐Jian Zhao Peng‐Xiang Lai Yan‐Xia Zhou Yan‐Li Miao 《Helvetica chimica acta》2007,90(11):2196-2200
Three new eremophilane sesquiterpenes were isolated from the MeOH extract of the roots of Senecio nemorensis. Their structures were identified as 8α‐hydroxy‐6β‐(isobutanoyloxy)‐1‐oxoeremophila‐7(11),9‐dieno‐12,8β‐lactone ( 1 ), 6β,8β‐dimethoxy‐1‐oxoeremophila‐7(11),9‐dieno‐12,8α‐lactone ( 2 ), and 10α‐hydroxy‐6β‐(isobutanoyloxy)‐1‐oxoeremophila‐7(11),8‐dieno‐12,8‐lactone ( 3 ), respectively, based on spectroscopic data, including IR, EI‐MS, HR‐ESI‐MS, and 1D‐ and 2D‐NMR data. 相似文献
16.
A New Sesquiterpene from the Roots of Lindera strychnifolia 总被引:2,自引:0,他引:2
Jian Bei LI Yi DING* Wei Min LI Institute of Materia Medica Chinese Academy of Medical Sciences Beijing Guangzhou University of Traditional Chinese Medicine Guangzhou 《中国化学快报》2002,13(10)
The root of Lindera strychnifolia is used as a palliative and an antispasmodic in traditional chinese medicine. In previous studies of chemical constituents from this plant, more than 20 sesquiterpene lactones have been isolated and their structures were established1-7. In order to compare the difference of chemical constituents extracted by Supercritical Fluid Extraction (SFE) method and by organic solvent, the SFE extract from Lindera strychnifolia was investigated. A novel sesquiterp… 相似文献
17.
A new acyclic sesquiterpene oligoglycoside, named mukurozioside A, was isolated from pericarps of Sapindun mukurossi. On the basis of chemical and spectral evidence, the structure of mukurozioside A has been established as:11(S)-2,6(E,E)-dodecadiene-3,7,11-trimethyl-1,12-diol-1,12-bis-O-α-L-rhamnopyranosyl-(1→2)-[α-L-rhamnopyranosyl-(1→3)]-6-O-acetyl-β-D-Glucopyranoside(1). 相似文献
18.
ChaoYANG PengFeiWANG ZhongJianJIA 《中国化学快报》2003,14(5):485-486
Two new sesquiterpenes were isolaed from the aerial patrs of Inula Japonica.Their structures were eluicated as 1β-hydroxy-8β-acetoxyeostic acid methyl ester and 1β-hydroxy-8β-acetoxyisocostic acid mster by spectral methods. 相似文献
19.
ThegenusCremanthodium(ComPositae)isaTibetan-traditionalmedicineusedforanti-inflanunation,painreliefandcuringaPoplexy'.Incontinuationofourstudies0nCremanthodiumplantS',wenowreport0ntheisolahonandstrUctUreelucidationofanewbisabolanesesquiterpenefromCremanth0diumdiscotheum.ComPound1,gum,[a]io53.3(cl.0,CHCl3),TheFABmassspectrUmsh0wedaquasim0lecularionpeak559[M H] anditSisotopicpeakofll3intensityatInlz56l,whichsuggestedthemolecularformulatobeC28ffi3O9Clinagreementwiththe13CNMRandDEPTsp… 相似文献
20.
A New Sesquiterpene Lactone from Scorzonera austriaca 总被引:2,自引:0,他引:2
JuanLI QuanXiangwu YanPingSHI YingZHU 《中国化学快报》2004,15(11):1309-1310
A new guaianolide was isolated from the roots of Scorzonera austriaca. The structurewas elucidated on the basis of spectral methods including 2D NMR. 相似文献