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1.
Two new oleanane triterpene saponins, named as anhuienside C (1) and D (2),
were isolated from the rhizomes of Anemone anhuiensis (Ranunculaceae). The structures of
the new compounds were elucidated as 3-O-α-L-rhamnopyranosyl (1→ 2)-β -D-xylopyranosyl
oleanolic acid 28-O-b -D-glucopyranosyl (1→ 6)-b -D-glucopyranosyl ester (1) and 3-O-β-D-xylopyranosyl
oleanolic acid 28-O-α-L-rhamnopyranosyl (1→ 4)-β-D-glucopyranosyl (1→6)-β-D-gluco-pyranosyl
ester (2), respectively. 相似文献
2.
YongJIANG PengFeiTU 《中国化学快报》2002,13(4):335-336
Two new xanthone glycosides,polygalaxanthone IV and V were isolated from the roots of Polygala tenuifolia Willd. Their structures were established as 6-O-[α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranosyl]-1-hydroxy-3,7-dimethoxyxanthone(polygalaxanthone IV), and 6-O-[α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranosyl]-1,3-dihydroxyl-7-methoxyxanthone (polyga-laxanthone V),respectively, on the basis of chemical and spectral evidence. 相似文献
3.
Lan Tian Zhang Yan Wen Zhang Yoshihisa Takaishi Hong Quan Duan 《中国化学快报》2008,19(2):190-192
A new triterpenoid saponin, 3-O-[(6′-butyryl)-β-D-glucopyranosyl]-28-O-[α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl] oleanolic acid, as well as three known triterpenoid saponins were isolated from the rhizomes of Anemone flaccida. Their structures were elucidated by spectroscopic methods. These compounds showed significant antitumor activities. 相似文献
4.
Three new 27-nor-triterpenoid saponias named rubenorside A (1),rubenorside B(2) and rubenorside C (3) were isolated from the roots of Adina rubella.Their structures were characienzed as pyrocincholic acid 3β-O-α-L-rhamnopyranosyl(28→1 )-β-D-glucopyranosyl ester (1),pyrocinchohe acid 3β-O-β-D-glucopyranosyl(1→2)-β-D-fucopyranosyl(28→1)-β-D-glucopyranosyl(1→6)-β-D-glico-pyranosyl ester (2) and pyrocincholic acid 3β-O-β-D-glucopyranosyl(1→2)-β-D-glucopyranosyl(28→1)β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl ester () by spectral methods,especially 2D NMR experiments. 相似文献
5.
<正>Three new compounds named(2E)-prenyl benzoate-4-O-α-L-arabinopyranosyl(1→6)β-D-glucopyranoside(1),7-methoxy-8- O-β-D-glucopyranosyl coumarin(2),and 3,4'-dihydroxy-3'-methoxy benzenepentanoic acid(3) were isolated from the leaves of Acanthopanax senticosus Harms.The structures of new compounds were determined by means of 2D NMR experiments and chemical methods. 相似文献
6.
YongChunYANG JianGongSHI ShengYangHUANG 《中国化学快报》2002,13(12):1185-1188
Two new furostanol oligoglycosides named as aspacochioside A(1)and B(2) were isolated from the roots of Asparagus cochinchinensis (Lour.)Merr..Their structures were clucidated to be 3-O-[{α-L-rhamnopyranosyl-(1→4)}{β-D-glucopyranosyl}]-26-O-[β-D-glucopy-ranosyl]-(25S)-5β-furostane-3β,22α,26-triol 1 and 3-O-[{α-L-rhamnopyranosyl-(1→4)}{β-D-glu-copyeransoyl}]-26-O-[β-D-glucopyranosyl]-22α-methoxy-(25S)-5β-furostane-3β,26-diol 2 on the basis of spectroscopic techniques and chemical methods. 相似文献
7.
FAN Gao-Jun HE Zhi-ShengShanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaWU Hou-Ming XU Jing-FeiState Key Laboratory of Bioorganic Natural Products Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai China 《中国化学》1997,15(5):431-437
Four new triterpenoid saponins were isolated from the roots of Adina rubella Hance. They were characterized as adinaic acid 3β-O-[α-L-rhamnopyranosyl(l→2)-β-D-glucopyranosyl(l→2)-β-D-glucurono-pyranoside-6-O-methyl ester]-28-O-β-D)-glucopyranoside, adinaic acid 3β-O-[α-L-rham-nopyranosyl(l→2)-β-D-glucopyranosyl(l→2)-β-D-glucuronopyranoside-6-O-butyl ester]-28-O-β-D-glu-copyranoside, adinaic acid 3β-O-[β-D-glucopyranosyl(l→2)-β-D-glucopyranosyl]-(28→1)-β-D-gluco-pyranosyl(l→6)-β-D-glucopyranosyl ester, 27-hydroxyursolic acid 3β-O-[α-L-rhamnopyranosyl (l→2)-β-O-glucopyranosyl(l→2)-β-D)-glucuronopyranoside-6-O-methyl ester]-28-O-β-D)-glucopyranoside. Their structures were elucidated by spectral methods, especially with the aid of 2D NMR techniques. Their complete assignments of the 1H and 13C NMR signals were carried out. 相似文献
8.
Two new compounds,oleanolic acid 28-O- β-D-glucopyranosyl-3-O-α-L-arabinopyranosyl-(1→3)-(6′-butyl ester)-β-D-glucuropyranoside 1,oleanolic acid 28-O-β-D-glucopyranosyl(1→6)-β-D-glucopyranoside 2 have been isolated from the roots of Hemsleya penxianensis var.gulinensis.Their structures were determined on the bases of the spectral and chemical evidences. 相似文献
9.
Two new cardenolide glycosides, biondianosides A and B, were isolated from the roots of endemic plant of Biondia hemsleyana (Warb.) Tsiang. Their structures were elucidated as periplogenin-3-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl(1→4)-β-D-cymaropyranoside (1) and 17βH-periplogenin-3-O-β-D-cymaropyranoside (2) by the spectroscopic and chemical methods. 相似文献
10.
GUO Shou-jun ZHAO Xin-hua YANG Yong-li CHENG Dong-liang 《高等学校化学研究》2005,21(5):531-535
A diterpenoid trisaccharide, smithoside A, and a saponin, smithoside B, as well as six known compounds, apigenin, apigenin-7-O-glucoside, daucosterol, shanzhiside methyl ester, 8-acetylshanzhiside methyl ester and acteoside, were isolated from Aster smithianus. On the basis of spectral evidence and chemical analytical results, smithosides A and B were identified as pimar-15(16)-β-ene-8β,11α-diol-3β-O-β-D-glucopyranosyl(1→3)-[β-glucopyranosyl(1→2)]-β-D-glucopyranoside and 2β,3β,16β,21β,23-pentahydroxy-12-ene-28 oleanoic acid lactone-3-O-β-D-glucopyranosyl(1→3)-β-D-glucopyranoside, respectively. 相似文献
11.
Laurent A. Dcostered Kurt Hostettmann Helen Stoeckli-Evans Jerome D. Msonthi 《Helvetica chimica acta》1987,70(7):1694-1702
Two new 2H-1-benzopyranyl ketones 1 and 2 and three new pyrano[3,2-c: 4,5,6-d′ e′]di[1]benzopyrandiyl diketones 3 , 4a / 4b , and 5 have been isolated from the leaves and twigs of Hypericum revolutum VAHL (Guttiferae). The structure of 3 (hyperevoline) was established by X-ray analysis as 1,1′-[1,13,13a,13b-tetrahydro-5,8,10-trihydroxy-2,2,6,9,13,13-hexamethyl-2H, 7aH-pyrano[3,2-c:4,5,6-d′e′]di[1]benzopyran-4, 11-diyl]bis[2-methyl-1-propanone]. The structures of the isolated compounds were established by spectroscopic (UV, IR, EI-MS, 1H- and 13C-NMR) and chemical (acetylation and acidic dimerization) methods. 相似文献
12.
Eight phenolic compounds, including two mixtures of two compounds, were isolated from the ethyl acetate extract of leaves and stems of Homalium brachybotrys. They were identified on the basis of spectroscopic data as quercetin-3-O-beta-glucopyranoside, luteolin-7-O-beta-glucopyranoside, 5,6-dihydro-6-beta-glucopyranosyloxy-3-(hydroxyphenyl-methyl)-2(4H)-benzofuranone (cochinolide 6-O-beta-glucopyranoside) (1), 2-(6-benzoyl-beta-glucopyranosyloxy)-5-hydroxybenzyl alcohol (poliothrysoside) (2), 2-(beta-glucopyranosyloxy)-5-hydroxybenzyl alcohol (salirepin) (3), 4,5-dihydro-7a-beta-glucopyranosyloxy-3-(hydroxyphenylmethyl)-2(7aH)-benzofuranone (isocochinolide-7a-O-beta-glucopyranoside) (4), 5,6-dihydro-3-(hydroxyphenylmethyl)-2(4H)-benzofuranone (6-deoxycochinolide) (5) and 3-benzylidine-6-hydroxy-2-benzofuranone (1'deoxy-4,5,6-dehydrocochinolide) (6). Benzofuranones (4), (5) and (6) are new natural products. The compounds isolated support the argument that Homalium is best placed in the Salicaceae s.l. 相似文献
13.
Inthemoleculardesignofpesticides"SubstructureLinkWay"playsanimportantroleininventingnewkindofleadcompounds.Wehavefoundthatbenzisothiazoleisthebioisosterismofsulfonylureaherbicides(suchasDPX-T6376)'.IthasbeenreportedthatacylureaderivativeswithmultisubstitUtedpyrimidineringhadpotentbiologicaIactivity".Inordertosearchfornewkindofmedicineswithexcellentefficiency,lowerpoisonandlessside-effect,wedevisedandsynthesizedfourteena-chloroacetylureascontaining4,5,6-trisubstitutedpyrimidinring5a~nanduse… 相似文献
14.
Two flavonoid glycosides (compounds 1 and 3) of which one is reported for the first time and a methylinositol (compound 2) were isolated from the aerial parts of Ebenus haussknechtii (Leguminosae). The structures were established as quercetin-7-O-[alpha-L-rhamnopyranosyl(1 --> 6)-beta-D-galactopyranoside] (1), morin-3-O-[4-[5-(4-hydroxyphenyl)pentanoyl]-alpha-L-rhamnopyranosyl(1 --> 6)-beta-D-galactopyranosyl]-7-4'-di-O-methyleter (3), and methylinositol (2) on the basis of chemical and spectroscopic means. The antimicrobial activities of the extracts have also been examined. 相似文献
15.
珠子参化学成分分析 总被引:6,自引:0,他引:6
从珠子参根茎中分离得到7个化合物. 利用核磁共振、 质谱和红外等手段, 并结合其理化性质, 鉴定了其结构, 它们分别是24(R)-珠子参苷R1, 6-O-[β-D-吡喃葡萄糖基(1→2)-β-D-吡喃葡萄糖基]-20-O-[β-D-吡喃葡萄糖基(1→4)-β-D-吡喃葡萄糖基]-20(S)-原人参三醇、 6″-乙酰基-人参皂苷Rd、 人参皂苷Rf、 竹节参皂苷Ⅳa、 人参皂苷Rd和竹节参皂苷Ⅴ. 其中, 24(R)-珠子参苷R1和6-O-[β-D-吡喃葡萄糖基(1→2)-β-D-吡喃葡萄糖基]-20-O-[β-D-吡喃葡萄糖基(1→4)-β-D-吡喃葡萄糖基]-20(S)-原人参三醇为2个新化合物, 6″-乙酰基-人参皂苷Rd 和人参皂苷Rf为首次从珠子参根茎中得到. 相似文献
16.
Huang XZ Zhu Y Guan XL Tian K Guo JM Wang HB Fu GM 《Molecules (Basel, Switzerland)》2012,17(4):4219-4224
Bioassay-guided fractionation of metabolites from the fungus Cephalosporium sp.AL031 isolated from Sinarundinaria nitida led to the discovery of a new isobenzofuranone derivative, 4,6-dihydroxy-5-methoxy-7-methylphthalide (1), together with three known compounds: 4,5,6-trihydroxy-7-methyl-1,3-dihydroisobenzofuran (2), 4,6-dihydroxy-5-methoxy-7-methyl-1,3-dihydroisobenzofuran (3) and 4,5,6-trihydroxy-7-methylphthalide (4). The structure of the new compound 1 was determined based on MS, 1D and 2D NMR spectral data. Compounds 1-4 showed potent antioxidant activity with EC?? values of 10, 7, 22 and 5 μM by 1,1-diphenyl-2-picryhydrazyl (DPPH) radical-scavenging assay. 相似文献
17.
Jabrane A Ben Jannet H Miyamoto T Tanaka C Mirjolet JF Duchamp O Harzallah-Skhiri F Lacaille-Dubois MA 《Magnetic resonance in chemistry : MRC》2011,49(2):83-89
From the roots of Atriplex glauca L. var. ifiniensis (Caball) Maire (syn. of Atriplex parvifolia Lowe var. genuina Maire), three new saikosaponins designated as glaucasides A-C (1-3) were isolated together with the known 3-O-β-D-glucopyranosyl-(1 → 2)-β-D-galactopyranosyl-saikogenin F (4). The structures of the new compounds were elucidated by extensive analysis of one-dimensional and two-dimensional NMR spectroscopy, FABMS, HR-ESIMS and chemical evidence as 13β,28-epoxy-16β,21β-dihydroxyolean-11-en-3β-yl O-β-D-[2-O-sulfate]-glucopyranosyl-(1 → 2)-α-L-arabinopyranoside (1), 13β,28-epoxy-16β,21β-dihydroxyolean-11-en-3β-yl O-β-D-[2-O-sulfate]-glucopyranosyl-(1 → 2)-α-L-arabinopyranosyl 21-O-{4-(secbutylamido)-butanoyl ester} (2) and 3-O-β-D-glucopyranosyl-(1 → 2)-β-D-galactopyranosyl saikogenin G (3). The cytotoxic activities of these compounds were evaluated against the HT-29 and HCT 116 human colon cancer cell lines. 相似文献
18.
Li J Bi X Zheng G Hitoshi Y Ikeda T Nohara T 《Chemical & pharmaceutical bulletin》2006,54(10):1451-1454
Two new steroidal glycosides named riparosides A (1) and B (2), and two aromatic compounds (3, 4), together with four known flavonoid derivatives have been isolated from the EtOH extract of the rhizomes and roots of Smilax riparia A. DC. The structure of riparoside A (1) was determined to be 3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->6)]-beta-D-glucopyranosyl 3beta,20alpha-dihydroxy-5alpha-furost-22(23)-ene 26-O-beta-D-glucopyranoside. Riparoside B (2) was characterized as 3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->6)]-beta-D-glucopyranosyl 3beta,16beta-dihydroxy-5alpha-pregnan-20-one 16-O-[5-O-beta-D-glucopyranosyl 5-hydroxy-4-methyl-pentanoic acid]-ester 26-O-beta-D-glucopyranoside. Compounds 3 and 4 were elucidated as a sucrosyl ferulic acid ester and 7-O-methyl-10-oxythymol gentiobioside, respectively. 相似文献
19.
20.
Wanxing Wei Yuanjiang Pan Yaozu Chen Cuiwu Lin Tengyou Wei Shukai Zhao 《Chemistry of Natural Compounds》2005,41(1):17-21
Five compounds, terephthalic acid mono-[2-(4-carboxy-phenoxycarbonyl)-vinyl] ester (1), (E)-3-(5′-hydroperoxy-2,2′-dihydroxy[1,1′-biphenyl]-4-yl)-2-propenoic acid (2), 3,4,5-trihydroxybenzoic acid (3), succinic acid (or butanedioic acid) (4), and 2,3,4,5,6-pentahydroxybenzoic acid (5), were isolated from Phyllanthus urinaria. The structures of these compounds were elucidated by means of spectral techniques including IR, MS, and 1D/2D NMR. 1 and 2 are new compounds.__________Published in Khimiya Prirodnykh Soedinenii, No. 1, pp. 14–17, January–February, 2005. 相似文献