نتایج جستجو برای: glucopyranoside

تعداد نتایج: 1610  

Journal: :Molecules 2015
Yan-Jun Sun Yan-Li Zhang Yu Wang Jun-Min Wang Xuan Zhao Jian-Hong Gong Wei Gao Yan-Bin Guan

In the present work, a quantitative 1H Nuclear Magnetic Resonance (qHNMR) was established for purity assessment of six aryltetralin lactone lignans. The validation of the method was carried out, including specificity, selectivity, linearity, accuracy, precision, and robustness. Several experimental parameters were optimized, including relaxation delay (D1), scan numbers (NS), and pulse angle. 1...

2007
Bernadete P. da Silva José P. Parente

Three new steroidal saponins were isolated from the roots of Smilax officinalis Kunth. Their structures were established as (3β,5β,22α,25S)-26-(β-D-glucopyranosyloxy)-22-hydroxyfurostan-3-yl O-α-L-arabinopyranosyl-(1→6)-O-[β-D-glucopyranosyl-(1→4)]-β-D-glucopyranoside, (3β,5α,22α,25S)-26-(β-D-glucopyranosyloxy)-22-hydroxyfurostan-3-yl O-α-L-arabinopyranosyl-(1→6)-O-[β-D-glucopyranosyl-(1→4)]-β-...

Journal: :Dalton transactions 2013
Valentina Oliveri Maurizio Viale Giulia Caron Cinzia Aiello Rosaria Gangemi Graziella Vecchio

8-Hydroxyquinoline derivatives are metal-binding compounds that have recently attracted interest as therapeutic agents for cancer therapy. In this scenario, we designed and synthesized three new glucoconjugates, 5,7-dichloro-8-quinolinyl-β-D-glucopyranoside, 5-chloro-8-quinolinyl-β-D-glucopyranoside and 2-methyl-8-quinolinyl-β-D-glucopyranoside and investigated their biological properties in co...

Journal: :The Journal of antibiotics 1989
N Asano K Katayama M Takeuchi T Furumoto Y Kameda K Matsui

The 3-keto derivatives of trehalose and sucrose respectively were prepared by a one-step enzymatic route using D-glucoside 3-dehydrogenase from Flavobacterium saccharophilum. Reductive amination of 3-ketotrehalose with ammonium acetate and sodium cyanoborohydride gave three compounds, 3-amino-3-deoxy-alpha-D-allopyranosyl alpha-D-glucopyranoside, 3-amino-3-deoxy-alpha-D-glucopyranosyl alpha-D-g...

Journal: :Molecules 2010
Hao Liu Yan Mou Jianglin Zhao Jihua Wang Ligang Zhou Mingan Wang Daoquan Wang Jianguo Han Zhu Yu Fuyu Yang

Seven flavonoids have been isolated from the aerial parts of Halostachys caspica C. A. Mey. (Chenopodiaceae) for the first time. By means of physicochemical and spectrometric analysis, they were identified as luteolin (1), chrysin (2), chrysin 7-O-β-D-glucopyranoside (3), quercetin (4), quercetin 3-O-β-D-glucopyranoside (5), isorhamentin-3-O-β-D-glucopyranoside (6), and isorhamentin-3-O-β-D-rut...

2009
Kei Shimoda Hiroki Hamada

Cultured cells of Pavlova sp. glycosylated bisphenol A to its mono-glucoside, 2-(4-beta-D-glucopyranosyloxyphenyl)-2-hydroxyphenylpropane (9%). Use of immobilized Pavlova cells in sodium alginate gel improved yield of the product (17%). On the other hand, Pavlova cell cultures converted benzophenone into diphenylmethanol (49%) and diphenylmethyl beta-D-glucopyranoside (6%). Incubation of benzop...

Journal: :Molecules 2009
Gaimei She Zhiqin Guo Haining Lv Dongmei She

Elsholtzia rugulosa Hemsl. is known in China as a local herbal tea, medicinal herb and honey plant. Chemical examination of E. rugulosa led to the isolation of two new flavonoid glycosides, apigenin 4'-O-alpha-D-glucopyranoside (1) and 5,7,3',4'-tetrahydroxy-5'-C-prenylflavone-7-O-beta-D-glucopyranoside (2), together with nine known flavonoids. Their structures were elucidated on the basis of s...

Journal: :Bioscience, biotechnology, and biochemistry 1996
J H Moon N Watanabe Y Ijima A Yagi K Sakata

Two new alcoholic aroma precursors, cis- and trans-linalool, 3,7-oxides 6-O-beta-D-apiofuranosyl-beta-D-glucopyranosides (1 and 2), as well as two already known compounds, (Z)-3-hexenyl beta-D-glucopyranoside (3) and methyl salicylate 6-O-beta-D-xylopyranosyl-beta-D-glucopyranoside (beta-primeveroside: 4), and another new monoterpendiol glycoside, 8-hydroxygeranyl beta-primeveroside (5) have re...

2017
Nobuji NAKATANi

with the quercetin monoglucosides, quercetin-3-O-fi-Dglucopyranoside (Q3G), quercetin-4'-O-fi-D-glucopyranoside (Q4'G) and quercetin-7-O:t7-D-glucopyranoside (Q7G), as well as with quercetin-3-O-rutinoside (rutin) and pnitrophenyl-ll-D-gl"cepyranoside (NPG) by using the HPLC technique. Enzymes were prepared from rat small intestinal mucosa of the duodenum, jejunum and ilellm, among which the en...

Journal: :Chemical & pharmaceutical bulletin 2000
H Otsuka E Hirata T Shinzato Y Takeda

Six lignan and neolignan derivatives (1-6) were isolated from the n-BuOH-soluble fraction of a MeOH extract of the leaves of Glochidion zeylanicum. On the basis of spectral data, their structures were elucidated to be (+)-isolarisiresinol 3a-O-beta-glucopyranoside (1), dihydrodehydrodiconiferyl alcohol 4-, 9- and 9'-O-beta-D-glucopyranosides (2-4, respectively), (+)-isolarisiresinol 2a-O-beta-D...

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