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1.
Three new glycosides with the same saccharides, namely miliusoside A ( 1 ), miliusoside B ( 2 ), and miliusoside C ( 3 ), together with five known compounds were isolated from the stems of Miliusa balansae. Their structures were elucidated on the basis of detailed spectroscopic analysis and by comparison with the spectra of related model compounds. There was a rarely encountered α‐D ‐apiose moiety occurring in all new compounds. 相似文献
2.
Yuan‐Dan Li Zhao‐Yuan Wu Hong‐Mei Li Hai‐Zhou Li Rong‐Tao Li 《Helvetica chimica acta》2013,96(3):424-430
Three new iridoids, jatamanins N–P ( 1 – 3 ), along with the seven known iridiods 4 – 10 , were isolated from the roots of Valeriana jatamansi. Compound 1 is an unusual iridoid bearing two epoxy bridges between C(3) and C(6) and between C(1) and C(10), forming a unique cage‐like rigid skeleton. The structures of the new compounds were assigned on the basis of spectroscopic methods. 相似文献
3.
Bakhat Ali Rashad Mehmood Uzma Rasheed Mughal Abdul Malik Muhammad Safder Riaz Hussain Muhammad Imran Rasool Bakhsh Tareen 《Helvetica chimica acta》2012,95(4):586-593
Eremosides A–C ( 1 – 3 ), three new iridoid glucosides, were isolated from the AcOEt‐soluble fraction of the EtOH extract of the whole plant of Eremostachys loasifolia, along with buddlejoside B ( 4 ), 10‐O‐benzoylcatalpol ( 5 ), and pakiside A ( 6 ) reported for the first time from this species. The structures of these compounds were elucidated by spectroscopic data including 2D‐NMR, FAB‐MS, ESI‐MS, as well as by acid and basic hydrolyses. 相似文献
4.
Yu‐Hong Zhou Yong Jiang Hai‐Ming Shi Yu‐Ping Chen Peng‐Fei Tu 《Helvetica chimica acta》2008,91(5):897-903
Five new xanthenone O‐glycosides, sibiricaxanthone C ( 1 ), sibiricaxanthone D ( 2 ), sibiricaxanthone E ( 3 ), sibiricaxanthone F ( 4 ), and sibiricaxanthone G ( 5 ) were isolated from the roots of Polygala sibirica L., together with the six known xanthenone glycosides 6 – 11 . The structures of new compounds were elucidated on the basis of spectral data and acid hydrolysis. 相似文献
5.
Raphaël Grougnet Prokopios Magiatis Sofia Mitaku Alexios‐Leandros Skaltsounis Pierre Cabalion François Tillequin Sylvie Michel 《Helvetica chimica acta》2011,94(4):656-661
Three new dammarane triterpenoids, gardaubryones A–C ( 1 – 3 ), were isolated from the gum collected on the aerial parts of Gardenia aubryi Vieill ., together with the known compounds hydroxydammarenone II ( 4 ), ocotillone ( 5 ), cabraleone, and hollongdione. The structures of the novel compounds were established on the basis of mass spectrometry, NMR experiments, and chemical‐correlation reactions. 相似文献
6.
Three new iridoid glycosides, hedycorysides A–C ( 1 – 3 , resp.), were isolated from the whole plant of Hedyotis corymbosa (Linn .) Lam ., along with four known compounds. Their structures were elucidated by extensive 1D‐ and 2D‐NMR analysis, as well as by HR‐ESI‐MS experiments. The three new compounds are the first benzoylated geniposide derivatives from Hedyotis. 相似文献
7.
Ponnapalli Mangala Gowri Sri Vedavyasa Srirangaraja Radhakrishnan Bhattar Poreddy Guruva Reddy Yerraballi Rakesh Shaik Jeelani Basha Akella Venkata Subrahmanya Sarma Janaswamy Madhusudana Rao 《Helvetica chimica acta》2009,92(7):1419-1427
An extensive study of metabolites present in Excoecaria agallocha Linn . led to the isolation of three new ent‐labdane‐type diterpenoids, named agallochaexcoerins A–C ( 1 – 3 ), besides three known compounds. The skeleton present in compound 1 is rather unusual, containing of a seven‐membered lactone. The structures were elucidated on the basis of spectroscopic studies and comparison with known related compounds. The isolated compounds 1 – 6 were not active against Raw 264.7 (macrophage‐like), K 562 (leukemia), and COLO 205 (colon) human carcinoma cell lines. 相似文献
8.
Three new diterpenoids with jatrophane‐type skeleton, sororianolides A–C ( 1 – 3 , resp.), were isolated from Euphorbia sororia. The identification and structure elucidation of these compounds were based on 1D‐ and 2D‐NMR‐spectral data analysis. It was the first time to isolate diterpenoids in this species. 相似文献
9.
Chuan‐Fu Chuang Mohamed H. Abd El‐Razek Yuh‐Chi Kuo Ching‐Te Chien Chang‐Hung Chou Ya‐Ching Shen 《Helvetica chimica acta》2009,92(10):2134-2145
Thirty seven taxanes were characterized from the leaves and twigs of Taiwanese yew (Taxus sumatrana, Taxaceae). Four of these metabolites are new and designated as sumataxins A–D ( 1 – 4 ). Compound 1 possesses an 11(15→1),11(10→9)‐di‐abeo‐taxane skeleton with an unusual spiro‐connected 2,2‐dimethyl‐1,3‐dioxolane ring at C(4), whereas compound 2 has a rare β‐OH orientation at C(13) of taxane diterpene ester. In addition, sumataxin C ( 3 ) is formulated as an 11(15→1)‐abeo‐taxane with a 4,5‐acetonide ring skeleton. Compound 4 is the first metabolite with a 4,20‐epoxy‐taxane structure. The structures of all the taxanes were established by spectroscopic methods. All compounds were evaluated for anti‐HSV‐1 and PBMC activities. Compound 9 exhibited significant enhancement of cell proliferation on peripheral blood mononuclear cells. 相似文献
10.
Xing‐Ping Zheng Qiong‐Fang Cui Jing‐Feng Zhao Li‐Juan Yang Hong‐Bin Zhang Xiao‐Dong Yang Liang Li 《Helvetica chimica acta》2014,97(12):1638-1643
Three new phthalides, gnaphalides A–C ( 1 – 3 , resp.), together with three known phthalides, were isolated from the aerial part of Gnaphalium adnatum. The structures of the new compounds were elucidated as 6‐(1,1‐dimethylprop‐2‐en‐1‐yl)‐5,7‐dihydroxy‐2‐benzofuran‐1(3H)‐one ( 1 ), 5‐hydroxy‐7‐[(2‐hydroxy‐3‐methylbut‐3‐en‐1‐yl)oxy]‐2‐benzofuran‐1(3H)‐one ( 2 ), and 1,3‐dihydro‐7‐[(3‐methylbut‐2‐en‐1‐yl)oxy]‐1‐oxo‐2‐benzofuran‐5‐yl β‐D ‐glucopyranoside ( 3 ) on the basis of spectral analyses. The structure of 1 was also confirmed by X‐ray crystallographic analysis. The three known phthalides, identified as 5,7‐dihydroxyisobenzofuran‐1(3H)‐one ( 4 ), anaphatol ( 5 ), and 7‐O‐(β‐glucopyranosyl)‐5‐hydroxyisobenzofuran‐1(3H)‐one ( 6 ), were isolated from the genus Gnaphalium for the first time. 相似文献
11.
Muhammad Aijaz Anwar Shazia Yasmeen Sadia Ferheen Nighat Afza Abdul Malik Mahboob Ali Kalhoro 《Helvetica chimica acta》2013,96(9):1801-1806
Three new isomeric biisoflavonoids, dapholidins A–C ( 1 – 3 , resp.), have been isolated from the AcOEt‐soluble fraction of the MeOH‐soluble extract of the roots of Daphne oleoides, along with the known compounds daphwazirin ( 4 ), daphnetin 8‐O‐β‐D ‐glucopyranoside ( 5 ), daphnin ( 6 ), daphneticin 4″‐O‐β‐D ‐glucopyranoside ( 7 ), and 6,7‐dihydroxy‐3‐methoxy‐8‐[2‐oxo‐2H‐1‐benzopyran‐7‐(O‐β‐D ‐glucopyranosyl)‐8‐yl]‐2H‐1‐benzopyran‐2‐one ( 8 ). The structures of the new compounds were determined by spectroscopic analyses, including 1D‐ and 2D‐NMR. 相似文献
12.
Three new chromenone glucosides acylated with monoterpene acids, eucamaldusides A ( 1 ), B ( 2 ), and C ( 3 ), were isolated from the leaves of Eucalyptus camaldulensis var. obtusa, together with the five known compounds ursolic acid lactone, obtusilin, β‐sitosterol glucoside, 4‐hydroxybenzoic acid, and cypellocarpin C. The structures of the new compounds were established by exhaustive 1D‐ and 2D‐NMR spectroscopic studies. Their configuration was determined by measuring the [α]D of the known methyl esters of the monoterpene acids obtained by methanolysis of 1 – 3 . 相似文献
13.
Zheng‐Hong Pan Jin‐Tang Cheng Juan He Yuan‐Yuan Wang Li‐Yan Peng Gang Xu Wei‐Bang Sun Qin‐Shi Zhao 《Helvetica chimica acta》2011,94(3):417-422
Three new clerodane diterpenoids, splendidins A–C ( 1 – 3 , resp.), were isolated from Salvia splendens, together with six known ones. Their structures were elucidated by extensive spectroscopic analysis. Splendidin C ( 3 ) was the first diterpenoid glucoside reported from this plant. These compounds were evaluated for their cytotoxic activity; however, none of them were cytotoxic. 相似文献
14.
Zaheer Ahmad Itrat Fatima Sajid Mehmood Rehana Ifzal Abdul Malik Nighat Afza 《Helvetica chimica acta》2008,91(1):73-78
Three new 20,24‐epoxydammarane triterpenes, santolins A–C ( 1 – 3 ), were isolated from the AcOEt‐soluble fraction of the MeOH extract of Salvia santolinifolia (whole plant). Their structures were assigned based on 1H‐NMR, 13C‐NMR (DEPT), and 2D‐NMR analyses, in combination with HR‐MS experiments and comparison with literature data of related compounds. 相似文献
15.
Zheng‐Ren Xu Xing‐Yun Chai Chang‐Cai Bai Hong‐Yan Ren Ya‐Nan Lu Hai‐Ming Shi Peng‐Fei Tu 《Helvetica chimica acta》2008,91(7):1346-1354
Seven new phenolic glucosides, xylocosides A–G ( 1 – 7 ), together with 18 known compounds were isolated from the stems of Xylosma controversum Clos . In compounds 3 – 6 , the glucose residue is esterified at C(6) by 2‐hydroxycyclopentanecarboxylic acid. These new structures were established by spectroscopic‐data interpretation and chemical methods. 相似文献
16.
Ai‐Ting Xing Jun‐Mian Tian Chun‐Mei Liu Hui‐Liang Li Wei‐Dong Zhang Lei Shan 《Helvetica chimica acta》2010,93(4):718-723
Three new monoterpene alkaloids, mairine A ( 1 ), mairine B ( 2 ), and mairine C ( 3 ), and a new caffeic acid ester, 2‐(1‐hydroxy‐4,4‐dimethoxycyclohexyl)ethyl caffeate ( 4 ), were isolated from the EtOH extract of the whole plants of Incarvillea mairei var. multifoliolata. The structures of these compounds were established on the basis of 1D‐ and 2D‐NMR and HR‐ESI‐MS analysis. 相似文献
17.
Ren‐Qiang Mei Qing Lu Yan‐Fen Hu Hai‐Yang Liu Fu‐Kai Bao Yu Zhang Yong‐Xian Cheng 《Helvetica chimica acta》2008,91(1):90-96
Three new linear C14 polyyne (=polyacetylene) glucosides, cordifolioidynes A–C ( 1 – 3 ), together with two known polyynes, lobetyol ( 4 ) and lobetyolin ( 5 ), and five known phenylpropanoids, i.e., sinapinaldehyde ( 6 ), coniferaldehyde ( 7 ), coniferoside ( 8 ), sachaliside ( 9 ), and isoconiferin ( 10 ), were isolated from the roots of Codonopsis cordifolioidea. The structures of 1 – 3 were established from spectral evidences and by characterization of their hydrolysis products. Acid hydrolysis of 1 afforded the aglycone 1a , while hydrolysis of 2 and 3 gave the cyclization products 2a and 3a , respectively. Compounds 4 – 10 were isolated from this plant for the first time. The antibacterial activity of compounds 1 – 5 were assessed against eight microbial strains by the agar dilution method, none of them exhibited antibacterial effects at concentrations up to 100 μg/ml. 相似文献
18.
Zhen‐Jie Li Jian‐Chao Chen Yun Sun Na‐Li Song Bao‐Hui Cheng Lu Lu Wei‐Guang Ma Lin Zhou Xian‐Min Zhang Zhong‐Rong Li Ming‐Hua Qiu 《Helvetica chimica acta》2009,92(9):1853-1859
Three new triterpenoid saponins, xuedanglycosides A–C ( 1 – 3 , resp.), along with six known ones, were isolated from the rhizomes of Hemsleya chinensis. By detailed analysis of the NMR spectra, by chemical methods, and by comparison with spectral data of known compounds, the structures of new compounds were determined to be 16α,23α‐epoxy‐2β,3α,20β‐trihydroxy‐10α,23α‐cucurbita‐5,24‐dien‐11‐on‐2‐yl β‐D ‐glucopyranoside ( 1 ), 2β,3α,16α,20β‐tetrahydroxycucurbita‐5,25‐diene‐11,22‐dion‐2‐yl β‐D ‐glucopyranoside ( 2 ), and oleanolic acid 28‐O‐β‐xylopyranosyl‐(1→6)‐O‐β‐glucopyranoside ( 3 ). In addition, hemslecin A 2‐O‐β‐D ‐glucopyranoside ( 6 ), hemsamabilinin B ( 7 ), and hemslonin A ( 9 ) were obtained for the first time from this plant. 相似文献
19.
Xian Li Zhi‐Ying Weng Yong Li Jian‐Xin Pu Sheng‐Xiong Huang Wei‐Lie Xiao Han‐Dong Sun 《Helvetica chimica acta》2008,91(6):1130-1136
Phytochemical investigation of the medicinal plant Isodon phyllostachys led to the isolation of four new ent‐kaurane diterpenoids, phyllostacins F–I ( 1 – 4 , resp.), together with 11 known compounds, rosthorin A ( 5 ), rabdoternin C ( 6 ), enmenol ( 7 ), oridonin ( 8 ), lasiocarpanin ( 9 ), xerophilusin B ( 10 ), ponicidin ( 11 ), macrocalin B ( 12 ), phyllostachysin A ( 13 ), sculponeatin C ( 14 ), and macrocalyxoformin E ( 15 ). The structures of the new compounds were established by spectroscopic methods, including extensive 1D‐ and 2D‐NMR analyses. Compounds 1, 2, 7, 10 , and 13 were evaluated for their inhibitory activity against K562 and HepG2 cell lines. 相似文献
20.
Three new xanthones, drimiopsins G–I ( 1 – 3 , resp.), and two known congeners, griseoxanthone C ( 4 ) and norlichexanthone ( 5 ), were isolated from a fungal isolate, Penicillium sp. NH‐7‐1. The structures of all compounds were determined on the basis of extensive spectroscopic analyses, as well as by comparison with literature reports, and the structure of compound 1 was further confirmed by single‐crystal X‐ray diffraction. 相似文献