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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.
Eight new C21 steroidal glycosides, named wilfosides A–H ( 1 – 8 , resp.), along with one known compound wilfoside KIN ( 9 ), were isolated from the roots of Cynanchum wilfordii. The structures of the new glycosides were determined on the basis of spectroscopic analysis, including 1D‐ and 2D‐NMR, and ESI‐MS techniques, as well as by comparison of the spectral data with those of related compounds. 相似文献
3.
Jian‐Chao Chen Lu Lu Xian‐Ming Zhang Lin Zhou Zhong‐Rong Li Ming‐Hua Qiu 《Helvetica chimica acta》2008,91(5):920-929
Eight new cucurbitane glycosides, kuguaglycosides A–H ( 1 – 8 , resp.), together with five known analogues, 3β,23‐dihydroxycucurbita‐5,24‐dien‐7β‐yl β‐D ‐glucopyranoside ( 9 ), karaviloside III ( 10 ), karaviloside V ( 11 ), karaviloside XI ( 12 ), and momordicoside K ( 13 ), were isolated from the root of Momordica charantia L. The structures of the new compounds were determined on the basis of spectroscopic and chemical methods. 相似文献
4.
Yu‐Zhi Zhou Huan Chen Li Qiao Xuan Lu Hui‐Ming Hua Yue‐Hu Pei 《Helvetica chimica acta》2008,91(7):1277-1285
Five new aromatic glycosides, 1 – 5 , named as carthamosides B4–B8, together with three known compounds, 4′‐(hydroxyphenacyl)‐β‐D ‐glucopyranoside ( 6 ), benzyl‐O‐α‐L ‐rhamnopyranosyl‐(1→6)‐β‐D ‐glucopyranoside ( 7 ), and 4‐(methoxybenzyl)‐O‐β‐D ‐glucopyranoside ( 8 ), have been isolated from the air‐dried flower of Carthamus tinctorius. Their structures were identified on the basis of chemical and spectroscopic methods. 相似文献
5.
Liu‐Bin Wei Hong‐E Yuan Jin‐Man Chen Qing‐Qing Wang Hui Wang Wen‐Cai Ye Guang‐Xiong Zhou 《Helvetica chimica acta》2013,96(1):150-157
Five new cycloartane glycosides, nervisides D–H ( 1 – 5 ), were isolated from the AcOEt‐ and H2O‐soluble portions of the 90% EtOH extract of the aerial part of the plant Nervilia fordii. The structures of the isolated glycosides were elucidated by extensive spectroscopic analysis including HR‐ESI‐MS and NMR data. The isolated nervisides D–H were evaluated for the cytotoxic activity in vitro against human‐tumor cell lines (CNE, Hep‐2 and HepG2) with the MTT method. 相似文献
6.
Li‐Ning Wang Dong‐Xiao Guo Shu‐Qi Wang Chang‐Sheng Wu Mujeeb Ur Rehman Hong‐Xiang Lou 《Helvetica chimica acta》2011,94(6):1146-1152
Four new phenolic glycosides, named rebouosides A–D ( 1 – 4 , resp.), along with three known ones 2‐(3,4‐dihydroxyphenyl)ethyl 2‐O‐α‐L ‐rhamnopyranosyl‐β‐D ‐allopyranoside ( 5 ), 2‐(3,4‐dihydroxyphenyl)ethyl β‐D ‐allopyranoside ( 6 ), 2‐(3,4‐dihydroxyphenyl)ethyl β‐D ‐glucopyranoside ( 7 ), and a nucleoside, inosine ( 8 ), were isolated from Chinese liverwort Reboulia hemisphaerica. Their structures were elucidated by acidic hydrolysis and extensive spectroscopic methods, including 2D‐NMR techniques. 相似文献
7.
Five new pregnane glycosides, perisepiumosides A–E ( 1 – 5 , resp.), along with the seven known constituents 6 – 12 , were isolated from the root barks of Periploca sepium Bge . (Asclepiadaceae), a traditional Chinese medicine used for the treatment of rheumatoid arthritis and wounds. Their structures were characterized on the basis of spectroscopic analyses. 相似文献
8.
A phytochemical investigation of the BuOH‐soluble fraction of the EtOH extract from the stems of Glycosmis pentaphylla resulted in the isolation of three new phenolic glycosides, glycopentosides D–F ( 1 – 3 , resp.). Their structures were determined by using spectroscopic analysis including UV, 1H‐ and 13C‐NMR, DEPT, COSY, ROESY, HMBC, HSQC, HR‐ESI‐MS, and acid hydrolysis. 相似文献
9.
Zhu‐Lin Gao Hong‐Ping He Ying‐Tong Di Xin Fang Chun‐Shun Li Qiang Zhang Pei‐Ji Zhao Shun‐Lin Li Xiao‐Jiang Hao 《Helvetica chimica acta》2009,92(9):1775-1781
Three new pregnane glycosides, tinctorosides A–C ( 1 – 3 , resp.), together with one known pregnane glycoside, stephanoside B ( 4 ), were isolated from the stems of Marsdenia tinctoria R. Br . (Asclepiadaceae). Their structures were elucidated by extensive spectral methods, especially 2D‐NMR experiments (1H,1H‐COSY, HSQC, HMBC, TOCSY, HSQC‐TOCSY, and ROESY), and chemical evidence. 相似文献
10.
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
11.
Three new furostanol glycosides, named ciliatasides A, B, and C ( 1 – 3 , resp.), have been isolated from the roots of Digitalis ciliata, along with two known furostanol glycosides. The structures of the new compounds were identified as (2α,3β,5α,14β,25R)‐26‐(β‐D ‐glucopyranosyloxy)‐2‐hydroxyfurost‐20(22)‐en‐3‐yl β‐D ‐glucopyranosyl‐(1→2)‐[β‐D ‐glucopyranosyl‐(1→3)]‐β‐D ‐galactopyranoside ( 1 ), (2α,3β,5α,14β,22R)‐26‐(β‐D ‐glucopyranosyloxy)‐2‐hydroxy‐22‐methoxyfurost‐25(27)‐en‐3‐yl β‐D ‐galactopyranosyl‐(1→2)‐[β‐D ‐xylopyranosyl‐(1→3)]‐β‐D ‐glucopyranosyl‐(1→4)‐β‐D ‐galactopyranoside ( 2 ), and (2α,3β,5α,14β,22R,25R)‐26‐(β‐D ‐glucopyranosyloxy)‐2,22‐dihydroxyfurostan‐3‐yl β‐D ‐glucopyranosyl‐(1→2)‐[β‐D ‐glucopyranosyl‐(1→3)]‐β‐D ‐galactopyranoside ( 3 ). 相似文献
12.
Chemical investigation of the fruits of Viburnum dilatatum Thunb. resulted in the isolation and characterization of four new phenolic glycosides, jiamiziosides A–D ( 1 – 4 ), together with five known compounds. Their structures were established by spectroscopic means and by comparison with the literature values. The antioxidant activities of the new isolates were determined against 2,2‐diphenyl‐1‐picrylhydrazyl (=2,2‐diphenyl‐1‐(2,4,6‐trinitrophenyl)hydrazinyl; DPPH) and superoxide radicals. Among the compounds tested, jiamizioside C ( 3 ) possesses the most potent inhibitory scavenging effect on DPPH and superoxide radicals with IC50 values of 16.8 and 17.8 μM , respectively. 相似文献
13.
Six new polyhydroxypregnane glycosides, namely cynotophyllosides A–F ( 1 – 6 ), together with five known steroids, were isolated from the roots of Cynanchum otophyllum. Their structures were elucidated by extensive spectroscopic methods (especially 2D‐NMR techniques) and acid‐catalyzed hydrolysis. Furthermore, high field 1D‐ and 2D‐NMR experiments were employed to elucidate the structure of 8 previously deduced only on the basis of LC/MS data. 相似文献
14.
Five new anthraquinone glycosides, hedanthrosides A–E ( 1 – 5 , resp.) and two new iridoid glycosides, hediridosides A and B ( 6 and 7 , resp.), along with two known anthraquinones and four known iridoids, were isolated from the stems of Hedyotis hedyotidea (DC.) Merr . The structures of the new compounds were elucidated on the basis of 1D‐ and 2D‐NMR, and HR‐MS analysis and chemical methods. 相似文献
15.
Guangyin Wang Junzeng Zhang Marianna Kulka Fujiang Guo Yiming Li 《Helvetica chimica acta》2014,97(7):985-991
Three new eremophilane glucosides, namely, petasitosides A–C, and seven known eremophilane‐type sesquiterpenoids were isolated from the roots of Petasites japonicus. Their structures were elucidated by spectroscopic techniques including 1D‐ and 2D‐NMR spectroscopy and mass spectrometry. This is the first report on eremophilane glycosides from the genus Petasites. 相似文献
16.
Yu Yang Hong‐Yu Hu Neng‐Jiang Yu Yang Zhang Yi‐Min Zhao 《Helvetica chimica acta》2010,93(8):1622-1627
Three new paeonidanin‐type monoterpene glycosides, named suffrupaeonidanins A–C, were isolated as minor components from the root cortex of Paeonia suffruticosa Andr. Their structures were elucidated by a combination of 1D‐ and 2D‐NMR, and mass spectral techniques. 相似文献
17.
Yue Zhang Lu‐Jun Li Peng Zhang Hui‐Fang Pi Han‐Li Ruan Ji‐Zhou Wu 《Helvetica chimica acta》2011,94(12):2207-2214
Three new triterpenoid saponins with an 18,19‐secours‐13(18)‐ene skeleton, dunnianaolactones A–C ( 1 – 3 , resp.), together with nine known compounds i.e., the ursane‐type triterpene saponin 4 , the two benzofuran lignans 5 and 6 , five flavonoid glycosides, and 4‐hydroxybenzoic acid, were isolated from the leaves of Ilex dunniana Levl . (Aquifoliaceae). Their structures were elucidated by means of spectroscopic and chemical methods. The configuration of dunnianaolactone A ( 1 ) was further confirmed by X‐ray crystal‐structure analysis. 相似文献
18.
Jie‐Qing Liu Cui‐Fang Wang Jian‐Chao Chen Shang‐Hui Tu Hong‐Fei Gu Wen‐Xiang Hu Ming‐Hua Qiu 《Helvetica chimica acta》2009,92(12):2737-2745
Six new triterpenoid glycosides, gynosaponins I–VI ( 1 – 6 , resp.), together with three known compounds, ginseng Rb1 ( 7 ), gypenoside XLIX ( 8 ), and gylongiposide I ( 9 ), were isolated from the aerial parts of Gynostemma pentaphyllum. Based on ESI‐MS, IR, 1D‐ and 2D‐NMR data (HMQC, HMBC, COSY, and TOCSY), the structures of the new compounds were determined as (3β,12β,20S)‐trihydroxydammar‐24‐ene 20‐O‐[α‐rhamnopyranosyl‐(1→2)]‐β‐glucopyranoside ( 1 ), (3β,12β,20S)‐trihydroxydammar‐24‐ene 20‐O‐[α‐rhamnopyranosyl‐(1→2)] [α‐rhamnopyranosyl‐(1→3)]‐β‐glucopyranoside ( 2 ), (3β,12β,20S)‐trihydroxydammar‐24‐ene 3‐O‐β‐glucopyranosyl‐20‐O‐[α‐rhamnopyranosyl‐(1→2)]‐β‐glucopyranoside ( 3 ), (3β,12β,20S)‐trihydroxydammar‐24‐ene 3‐O‐β‐glucopyranosyl‐20‐O‐[α‐rhamnopyranosyl‐(1→2)] [α‐rhamnopyranosyl‐(1→3)]‐β‐glucopyranoside ( 4 ), (3β,12β,20S)‐trihydroxydammar‐24‐ene 3‐O‐{[β‐glucopyranosyl‐(1→2)]‐β‐glucopyranosyl}‐20‐O‐[α‐rhamnopyranosyl‐(1→2)]‐β‐glucopyranoside ( 5 ), and (3β,12β,20S)‐trihydroxydammar‐24‐ene 3‐O‐{[β‐glucopyranosyl‐(1→2)]‐β‐glucopyranosyl}‐20‐O‐[α‐rhamnopyranosyl‐(1→2)] [α‐rhamnopyranosyl‐(1→3)]‐β‐glucopyranoside ( 6 ). 相似文献
19.
Cao‐Mao Xiao Jing Huang Xue‐Mei Zhong Xiao‐Yan Tan Peng‐Chi Deng 《Helvetica chimica acta》2009,92(12):2587-2595
Two new homo‐aro‐cholestane glycosides and a new cholestane glycoside, along with three known saponins, were isolated from the 95% EtOH extract of the roots and rhizomes of Paris polyphylla var. pseudothibetica. The structures of the new compounds were elucidated as 3β‐O‐{α‐L ‐rhamnopyranosyl‐(1→4)‐α‐L ‐rhamnopyranosyl‐(1→4)‐[α‐L ‐rhamnopyranosyl‐(1→2)]}‐β‐D ‐glucopyranosylhomo‐aro‐cholest‐5‐ene‐26‐O‐β‐D ‐glucopyranoside (parispseudoside A, 1 ), 3β‐O‐α‐L ‐rhamnopyranosyl‐(1→2)‐β‐D ‐glucopyranosylhomo‐aro‐cholest‐5‐ene‐26‐O‐β‐D ‐glucopyranoside (parispseudoside B, 2 ), and (25R)‐3β‐O‐{α‐L ‐rhamnopyranosyl‐(1→4)‐α‐L ‐rhamnopyranosyl‐(1→4)‐[α‐L ‐rhamnopyranosyl‐(1→2)]}‐β‐D ‐glucopyranosyl‐cholesta‐5,17(20)‐diene‐16,22‐dione‐26‐O‐β‐D ‐glucopyranoside (parispseudoside C, 3 ) by spectroscopic methods, including 1D‐ and 2D‐NMR, and MS experiments, as well as chemical evidences. 相似文献
20.
Flavonoids Isolated from Heat‐Processed Epimedium koreanum and Their Anti‐HIV‐1 Activities
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Hong‐Mei Li Cheng Zhou Chin‐Ho Chen Rong‐Tao Li Kuo‐Hsiung Lee 《Helvetica chimica acta》2015,98(8):1177-1187
Systematic phytochemical investigation on heat‐processed Epimedium koreanum led to the isolation of 13 flavonoids, including five new prenyl‐flavonol glycosides, koreanosides A–E ( 1 – 5 , resp.). Their structures were elucidated on the basis of detailed analysis of the 1D‐ and 2D‐NMR spectroscopic data and chemical reactions. Apigenin ( 11 ) exhibited moderate anti‐HIV‐1 activity with an EC50 value of 12.8±3.27 μg/ml. 相似文献