Results 21 to 30 of about 3,257 (193)

Natural Products from (Asteraceae)

open access: yesNatural Product Communications, 2010
The aerial parts of Scorzonera aristata Ramond ex DC., collected in the South Tyrolean Dolomites, yielded the flavonoids quercetin 3- O -glucoside, rutin, and isoorientin, and the caffeic acid derivatives chlorogenic acid, 4,5-dicaffeoyl quinic acid, and
Manuela Jehle   +3 more
doaj   +1 more source

Glucosylated caffeoylquinic acid derivatives from the flower buds of Lonicera japonica

open access: yesActa Pharmaceutica Sinica B, 2015
Three new glucosylated caffeoylquinic acid isomers (1–3), along with six known compounds, have been isolated from an aqueous extract of the flower buds of Lonicera japonica.
Yang Yu   +6 more
doaj   +1 more source

Synthesis, Anti-HCV, Antioxidant and Reduction of Intracellular Reactive Oxygen Species Generation of a Chlorogenic Acid Analogue with an Amide Bond Replacing the Ester Bond

open access: yesMolecules, 2016
Chlorogenic acid is a well known natural product with important bioactivities. It contains an ester bond formed between the COOH of caffeic acid and the 3-OH of quinic acid.
Ling-Na Wang   +4 more
doaj   +1 more source

A facile synthesis of a new trihydroxy piperidine derivative and (+)-proto-quercitol from D-(-)-quinic acid

open access: yes, 2009
We described herein the new synthesis of a trihydroxy piperidine derivative (1,4,5-trideoxy-1,5-imino-d-ribo-hexitol) and (+)-proto-quercitol from d-(−)-quinic acid, both are considered as inhibitors for glycosidases ...
施增廉; Shih, Tzenge-lien; Kuo, Wei-shen; Lin, Ya-ling
core   +1 more source

Millet Quinic Acid Relieves Colitis by Regulating Gut Microbiota and Inhibiting MyD88/NF-κB Signaling Pathway

open access: yesFoods
Polyphenols are compounds derived from plant-based food possessing numerous biological activities, including inhibiting oxidative stress, suppressing inflammation, and regulating gut microbiota.
Sen Li   +5 more
doaj   +1 more source

Variability in the Content of Phenolic Compounds in Plum Fruit

open access: yesPlants, 2020
The aim of this study was to determine the composition and content of phenolic compounds in extracts of plum fruit. Fruit of 17 plum cultivars were analyzed. Fruit samples were collected in 2019 from fruit trees with “Myrobalan” (P. cerasifera Ehrh.) and
Mindaugas Liaudanskas   +8 more
doaj   +1 more source

Vanillic Acid Glycoside and Quinic Acid Derivatives from Gardeniae Fructus

open access: yes, 2016
Bioassay-directed chromatographic fractionation of an ethyl acetate extract of Gardenia jasminoides (Gardeniae Fructus) afforded a new vanillic acid 4-O-β-d-(6‘-sinapoyl)glucopyranoside (1) and five new quinic acid derivatives, methyl 5-O-caffeoyl-3-O ...
Eun Jung Kim (783746)   +5 more
core   +1 more source

Highly stereoselective and stereospecific syntheses of a variety of quercitols from d-(−)-quinic acid

open access: yes, 2009
The highly stereoselective synthesis of (−)-epi-, (−)-allo- and neo-quercitols as well as stereospecific synthesis of (−)-talo- and (+)-gala-quercitols have been achieved.
施增廉; Shih, Tzenge-lien; Lin, Ya-Ling; Kuo, Wei-Shen
core   +1 more source

Antioxidant and Antimicrobial Capacity of Quinic Acid

open access: yesBitlis Eren Üniversitesi Fen Bilimleri Dergisi, 2022
Recently, agents with natural antioxidant and antimicrobial properties have been popularly studied. For this purpose, phenolic compounds, terpenes, and organic acids are examined in their antioxidant and antimicrobial properties. Of these, organic acids are increasingly being used in pharmacology, medicine, food, and industry.
Leyla ERCAN, Mehmet DOĞRU
openaire   +3 more sources

A Concise, Enantioselective Approach to (−)-Quinic Acid

open access: yes, 2016
An expedient, enantioselective synthesis of a key precursor to (−)-quinic acid has been achieved from an ephedrine-derived morpholine-dione. The salient features of this approach are a highly diastereoselective conversion of the dione to a dialkenyl ...
Sunil V. Pansare (1490764)   +1 more
core   +1 more source

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