共查询到20条相似文献,搜索用时 31 毫秒
1.
Hong‐Ping He Yue‐Mao Shen Shun‐Ting Chen Yi‐Neng He Xiao‐Jiang Hao 《Helvetica chimica acta》2006,89(11):2836-2840
A new dimeric coumarin, diseselin B ( 1 ), and three new phenylpropanoids, lenisin A–C ( 2 – 4 ), together with eight known O‐terpenoidal coumarins, were isolated from the aerial part of Clausena lenis. Lenisin A ( 2 ) was also isolated from the aerial part of C. excavata. The structures were elucidated on the basis of 1D‐ and 2D‐NMR experiments (HMQC, HMBC, and 1H,1H‐COSY). 相似文献
2.
A new norlabdane diterpenoid, named vitrifolin A, was isolated from the fruits of Vitex trifolia Linn. var. simplicifolia Cham. Its structure was elucidated by mean of spectroscopic methods, including HRESIMS, IR, 1D and 2D NMR. The inhibitory effect of vitrifolin A on nitric oxide production in lipopolysaccarideactivated mouse macrophages was also evaluated. 相似文献
3.
Cheng‐Jian Tan Ping Yi Masuo Goto Susan L. Morris‐Natschke Li‐Na Liu Kuo‐Hsiung Lee Bao‐Yu Zhao 《Helvetica chimica acta》2016,99(3):225-227
A new matrine alkaloid derivative (+)‐(14β)‐14‐ethylmatridin‐15‐one ( 1 ) was isolated from the poisonous plant Oxytropis ochrocephala Bunge . The structure was established by spectroscopic methods, including extensive 1D‐ and 2D‐NMR experiments. 相似文献
4.
Two new eremophilenolides, ligushicins A (1) and B (2), and two known compounds including β-sitosterol and ursolic acid were isolated from Ligulariopsis shichuana. The structures of new compounds were established on the basis of 1D and 2D NMR data and HRESIMS data interpretation. The absolute configuration of new compounds was assigned by ECD spectroscopy, and that of ligushicins A (1) was confirmed by X-ray diffraction analysis. The antifungal and antifeedant activities of new compounds were evaluated against four plant pathogenic fungi and third-instar larvae of Plutella xylostella, respectively. Ligushicins A (1) and B (2) exhibited potent antifungal activity against Botrytis cinerea and Fusarium oxysporum with minimum inhibitory concentration (MIC) values ranging from 50 to 100 mg/L, while they also exhibited weak antifeedant activities. 相似文献
5.
Shao-Ming Chi Yi Wang Yan Zhao Jian-Xin Pu Xue Du Jin-Ping Liu Ji-Hua Wang Ye-Gao Chen Yong Zhao 《Chemistry of Natural Compounds》2012,48(4):577-579
A new cyclopentanone derivative, (1'R,5'R)-5-(5'-carboxymethyl-2'-oxocyclopentyl)-3Z-pentenyl acetate (1), was isolated from Euphorbia hirta. Its structure was elucidated on the basis of spectroscopic analysis including 1D and 2D NMR techniques. The EtOAc extract of Euphorbia hirta was evaluated against K562 and A549 cancer cell lines. 相似文献
6.
Hong Mei Li Wei Guang Wang Xiao Nian Li Yong Zhao Rong Tao Li Han Dong Sun 《中国化学快报》2008,19(12):1450-1452
A new cinnamic acid monoterpenoid ester, intermedin C (1), was isolated from the aerial parts of Schisandra propinqua var. interthedia. The structure of 1 was elucidated by spectroscopic methods including extensive ^1D and 2D NMR techniques. 相似文献
7.
Yabin Yang Fangfang Yang Lixing Zhao Rongting Duang Guangyi Chen Xiaozhan Li 《Natural product research》2016,30(1):65-68
A new polyoxygenated farnesylcyclohexenone, peniginsengin A (1), was isolated from the fermentation of Penicillium sp. YIM PH30003, an endophytic fungus associated with Panax notoginseng (Burk.) F. H. Chen. The structure was assigned based on a combination of 1 D and 2 D NMR and mass spectral data. The cytotoxicity and antimicrobial activities of compound 1 were investigated. 相似文献
8.
Gaoussou Timité Anne‐Claire Mitaine‐Offer Tomofumi Miyamoto Mohammad Ramezani Abdolhossein Rustaiyan Jean‐François Mirjolet Olivier Duchamp Marie‐Aleth Lacaille‐Dubois 《Magnetic resonance in chemistry : MRC》2010,48(5):370-374
From the roots of three species of Acanthophyllum (Caryophyllaceae), two new gypsogenic acid glycosides, 1 and 2, were isolated, 1 from A. sordidum and A. lilacinum, 2 from A. elatius and A. lilacinum, together with three known saponins, glandulosides B and C, and SAPO50. The structures of 1 and 2 were established mainly by 2D NMR techniques as 23‐O‐β‐D ‐galactopyranosylgypsogenic acid‐28‐O‐β‐D ‐glucopyranosyl‐(1→3)‐[β‐D ‐glucopyranosyl‐(1→6)]‐β‐D ‐galactopyranoside (1) and gypsogenic acid‐28‐O‐β‐D ‐glucopyranosyl‐(1→3)‐[β‐D ‐glucopyranosyl‐(1→6)]‐β‐D ‐galactopyranoside (2). The cytotoxicity of several of these saponins was evaluated against two human colon cancer cell lines (HT‐29 and HCT 116). Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
9.
Ju Sun Kim Min Hye Yean Joo Young Lee Yoon Jung Kim Eun Ju Lee So Young Lee Sam Sik Kang 《Helvetica chimica acta》2008,91(1):85-89
A new monoterpene glucoside, 1‐O‐β‐D ‐glucopyranosyl‐8‐O‐benzoylpaeonisuffrone ( 1 ), was isolated from the roots of Paeonia lactiflora cultivated in Korea, together with two known compounds 1‐O‐β‐D ‐glucopyranosylpaeonisuffrone and paeonidanin ( 2 ). Their structures were established on the basis of chemical and spectroscopic methods. 相似文献
10.
A new iridoid glycoside, sintenoside ( 1 ) and two new phenylethyl glycosides, globusintenoside (=2‐(3,4‐dihydroxyphenyl)ethyl‐O‐6‐O‐feruloyl‐β‐D ‐glucopyranosyl‐(1→4)‐α‐L ‐rhamnopyranosyl‐(1→3)‐4‐O‐caffeoyl‐β‐D ‐glucopyranoside; 2 ) and 3′′′‐O‐methylcrenatoside (=1,2‐O‐[2‐(3,4‐dihydroxyphenyl)ethan‐1,2‐diyl]‐3‐O‐α‐L ‐4‐O‐feruloyl‐rhamnopyranosyl‐β‐D ‐glucopyranose; 3 ) were isolated from the underground parts of Globularia sintenisii, along with three known iridoid glycosides, lytanthosalin, globularin, catalpol, and six known phenylethyl glycosides, verbascoside, isoverbascoside, leucoscepthoside A, plantainoside C, martynoside, and isocrenatoside. The structure elucidation of the isolated compounds was performed by spectroscopic methods (MS and 1D and 2D NMR). 相似文献
11.
A new cytotoxic glycosphingolipid, Iotroridoside‐A, was isolated from the marine sponge Iotrochota ridley collected from the South China Sea near Hainan Island, China. On the basis of chemical degradation method and IR, MS, 1H NMR, 13C NMR and 2D NMR spectrometry, its structure was assigned as 1‐O‐β‐D‐glucopyranosyl‐2‐[(4′ Z)‐2′‐hydroxytetracosene amido]‐4‐tetradecyl‐1, 3, 4‐butantriol. The new compound exhibits strong cytotoxicity against L1210 murine leukemia cells in vitro (ED50 = 0.08 μg/mL). 相似文献
12.
A new lignan, 4,4′-dihydroxy-3,3′-dimethoxy-6,9′-cycloligna-7,8′-dien-9′-al, was isolated from the stem of Syringa pinnatifolia Hems1. var. alashanensis MA. et S.Q. Zhou (S. pinnatifolia). This is the first report on the structure elucidation of a new compound based on spectroscopic methods including UV, IR, ESI-MS, 1D NMR and 2D NMR techniques. 相似文献
13.
AbstractA new sordarin derivative, trichosordarin A (1), with a unique norditerpene aglycone was isolated from the culture of a marine-sediment-derived fungal strain, Trichoderma harzianum R5. Its structure and relative configuration were unequivocally identified by a combination of 1D/2D NMR, IR, and mass spectrometric methods. Compound 1 was assayed to be toxic to the marine zooplankton Artemia salina. 相似文献
14.
Yong‐Qin Liu Ying‐Tong Di Yue‐Hu Wang Xiao‐Jiang Hao Xu‐Jia Hu 《Helvetica chimica acta》2016,99(7):558-561
A new carboline alkaloid, Trifiline D ( 1 ) and a new degraded diterpenoid, Trigoxyphin X ( 4 ) were isolated from the roots and stems of Trigonostemon lii. Their structures were elucidated by extensive spectroscopic analyses including 1D‐ and 2D‐NMR techniques. Compound 1 exhibited weak inhibitory activity against MCF‐7, A‐549, MGC‐803, and COLO‐205 with IC50 values ranging from 27.4 to 35.4 μm . 相似文献
15.
Abdul Hafeez Laghari Shahabuddin Memon Aisha Nelofar Khalid Mohammed Khan 《Helvetica chimica acta》2012,95(9):1556-1560
A new ursene‐type triterpene, (3β)‐30‐norurs‐11‐en‐3‐ol ( 1 ), was isolated from the MeOH extract of the roots of Alhagi camelorum. Its structure was elucidated on the basis of extensive spectroscopic investigations by 1D‐ and 2D‐NMR studies. In addition, 1 was evaluated for antifungal activities. Its application on prepared cultures of two fungi, i.e., Aspergillus niger and Saccharomyces cerevisiae, showed noticeable antifungal activity, suggesting that 1 could be used as a new promising agent in antifungal drug formulations. 相似文献
16.
Anthraquinone Derivatives and an Orsellinic Acid Ester from the Marine Alga‐Derived Endophytic Fungus Eurotium cristatum EN‐220 下载免费PDF全文
Feng‐Yu Du Xiao‐Ming Li Ji‐Ying Song Chun‐Shun Li Bin‐Gui Wang 《Helvetica chimica acta》2014,97(7):973-978
Cultivation of the fungal strain Eurotium cristatum EN‐220, an endophyte obtained from the marine alga Sargassum thunbergii, resulted in the isolation of one new anthraquinone glycoside, 3‐O‐(α‐D ‐ribofuranosyl)questinol ( 1 ) and one new orsellinic acid ester, cristatumside A ( 2 ), together with three known aromatic glycosides, 3‐O‐(α‐D ‐ribofuranosyl)questin ( 3 ), isotorachrysone 6‐O‐α‐D ‐ribofuranoside ( 4 ), and asperflavin ribofuranoside ( 5 ), as well as three anthraquinone derivatives, asperflavin ( 6 ), eurorubrin ( 7 ), and (+)‐variecolorquinone A ( 8 ). The structures of these compounds were determined by extensive analysis of their spectroscopic data, as well as by their comparison with those in the literature. Each of the isolated compounds was evaluated for its antimicrobial activity and brine shrimp lethality. 相似文献
17.
A new sesquiterpene manghookerins A (1) was isolated from the barks of Manglietia hookeri (Magnoliaceae) together with five known eudesmane-type sesquiterpenes. The structure of manghookerins A (1) was elucidated by physical and spectroscopic data analysis, including 1D and 2D NMR, HR-ESI-MS and X-ray diffraction. The structures of known sesquiterpenes were established by comparing their spectroscopic data with those in literatures. 相似文献
18.
Four new myrsinol diterpenes, proliferins A–D ( 1 – 4 , resp.) were isolated from the EtOH extracts of the roots of Euphorbia prolifera, along with four known compounds, euphorprolitherin B ( 5 ), euphorprolitherin D ( 6 ), SPr5 ( 7 ), and 14‐desoxo‐3‐O‐propionyl‐5,15‐di‐O‐acetyl‐7‐O‐nicotinoylmyrsinol‐14β‐acetate ( 8 ). Their structures were established on the basis of spectroscopic methods, including HR‐ESI‐MS, and 1D‐ and 2D‐NMR techniques. The cytotoxicity of compounds 1, 3 , and 4 against cancer cells was evaluated, with compound 1 being active against A2780 cancer cells. 相似文献
19.
Ji-Yeon Park Ah-Reum Han Yun-Seo Kil Unwoo Kang Se-Hee Kim 《Natural product research》2016,30(13):1504-1510
A new secoiridoid glycoside, 7β-O-dimethyl butanedioate morroniside (1) was isolated from the fruits of Cornus officinalis (Cornaceae) along with the known compound, caffeoyltartaric acid dimethyl ester (2) which was isolated from the family Cornaceae for the first time. Their structures were elucidated by physical and spectroscopic data analysis, including 1D and 2D NMR, ESI-MS and CD experiments. 相似文献
20.
A new cyclic heptapeptide containing γ-aminobutyric acid in the ring, namely unguisin E (1), was isolated from the fermentation culture of Aspergillus sp. AF119. The structure was elucidated by spectroscopic analyses, including 1D and 2D NMR experiments, and HR ESI-Q-TOF
mass spectrometry, and by comparison with those reported. Compound 1 was evaluated for its antimicrobial activities by the paper diffusion method. 相似文献