Results 51 to 60 of about 108,126,505 (165)

Phytochemical Standardization of an Extract Rich in Flavonoids from Flowers of Kalanchoe pinnata (Lam) Pers

open access: yesScientia Pharmaceutica, 2023
Kalanchoe pinnata is a species widely used in traditional medicine in Latin America and southern Africa. This species has been reported to have different activities, such as antioxidant, anti-inflammatory, and cytotoxic, the latter being related to its ...
Wilson Leonardo Villarreal Romero   +2 more
doaj   +1 more source

Chemical Constituents from the Roots, Stems and Leaves of

open access: yesNatural Product Communications, 2016
Four diarylpentanoids (1–4) , two phenylpropanoids (5–6) , three biflavonoids (7–9) , two lignans (10–11) and a coumarin (12) were isolated from the roots of Diplomorpha sikokiana (Franchet & Savatier) Honda (Family: Thymelaeaceae).
Hari Prasad Devkota   +3 more
doaj   +1 more source

Cytotoxycity and antiplasmodial activity of phenolic derivatives from Albizia zygia (DC.) J.F. Macbr. (Mimosaceae)

open access: yesBMC Complementary Medicine and Therapies, 2020
Background The proliferation and resistance of microorganisms area serious threat against humankind and the search for new therapeutics is needed. The present report describes the antiplasmodial and anticancer activities of samples isolated from the ...
Romeol Romain Koagne   +10 more
doaj   +1 more source

Potential Antimicrobial Activity of Galloyl-Flavonoid Glycosides From Woodfordia uniflora Against Methicillin-Resistant Staphylococcus aureus

open access: yesFrontiers in Microbiology, 2021
Antibiotic-resistant infections are a growing problem; to combat multi-drug resistant bacterial infections, antibiotics with novel mechanisms of action are needed. Identification of potent bioactive natural products is an attractive avenue for developing
Jae Sik Yu   +5 more
doaj   +1 more source

Chemical composition and antioxidant activity of aerial parts of Ferula longipes Coss. ex Bonnier and Maury

open access: yes, 2017
International audienceThis is the first study on the phytochemistry and antioxidant activity of Ferula longipes Coss. ex Bonnier and Maury (Apiaceae). A new flavonoid quercetin-3-O-α-L-rhamnopyranoside-7-O-ß-D-[2-O-caffeoyl]-glucopyranoside (1), along ...
Kabouche, Ahmed   +15 more
core   +1 more source

Chemical constituents and antioxidative activity of the extracts from Dyera costulata leaves [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2003
Chloroform and n-butanol extracts from the leaves of Dyera costulata exhibited EC50 values for DPPH radical scavenging activity of 79.8±0.2 and 12.0±0.1 μg/ml, respectively.
Apai Malinee   +2 more
doaj  

New Flavonoid Glycosides from Chrozophora senegalensis and Their Antioxidant Activity

open access: yesNatural Product Communications, 2006
Bioassay-directed fractionation of an antioxidant methanol extract of the leaves of Chrozophora senegalensis using DPPH assay led to the isolation of three new flavonoid glycosides, quercetin 3-O-(6″-caffeoyl)-β-D-glucopyranoside-3′-O-β-D-glucopyranoside
Antonio Vassallo   +7 more
doaj   +1 more source

Antihyperuricemic Effect of Hawthorn Flavonoid Vitexin: LC–MS Analysis, Network Pharmacology, and In Vivo Verification of Molecular Mechanisms

open access: yesFood Science &Nutrition, Volume 14, Issue 6, June 2026.
UPLC‐MS/MS analysis of hawthorn flavonoids combined with network pharmacology, molecular docking, and molecular dynamics studies predicted vitexin as a key compound acting on the PPARγ/ABCG2 pathway. In a hyperuricemic mouse model, vitexin effectively lowered serum uric acid by enhancing renal and intestinal urate excretion, inhibiting urate production,
Shu‐Yu Wu   +11 more
wiley   +1 more source

Anti-influenza Sesquiterpene from the Roots of

open access: yesNatural Product Communications, 2014
One new flavonol glycoside, 4′- O -methylmyricitrin 3′- O-β -D-glucopyranoside ( 1 ), one new sesquiterpene, reynoudiol ( 11 ), as well as the 12 known compounds ( 2–10 , 12–14 ) quercetin 3- O -methyl ether ( 2 ), quercitrin ( 3 ), isorhamnetin 3- α -L ...
Nguyen Xuan Nhiem   +13 more
doaj   +1 more source

Novel Flavonol Glycosides from the Aerial Parts of Lentil (Lens culinaris)

open access: yesMolecules, 2014
While the phytochemical composition of lentil (Lens culinaris) seeds is well described in scientific literature, there is very little available data about secondary metabolites from lentil leaves and stems.
Jerzy Żuchowski   +2 more
doaj   +1 more source

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