Results 211 to 220 of about 53,910 (244)
Some of the next articles are maybe not open access.
Flavonol glycosides from Calotropis gigantea
Phytochemistry, 1992Besides isolation and characterization of isorhamnetin-3-O-rutinoside, isorhamnetin-3-O-glucopyranoside and taraxasteryl acetate, a new flavonol trisaccharide was isolated from the aerial parts of Calotropis gigantea, and its structure was established as isorhamnetin-3-O-[2-O-beta-D-galactopyranosyl-6-O-alpha-L-rhamnopy ranosyl]- beta-D-glucopyranoside
S, Sen, N P, Sahu, S B, Mahato
openaire +2 more sources
1982
Most reports on the identification of known flavonoids in new plant sources as well as those on novel flavonoids naturally deal with the two most abundant classes, the flavones and flavonols. For this chapter we have listed all references to the occurrence of flavone and flavonol aglycones which have appeared from 1975 to 1980, and also include such ...
openaire +1 more source
Most reports on the identification of known flavonoids in new plant sources as well as those on novel flavonoids naturally deal with the two most abundant classes, the flavones and flavonols. For this chapter we have listed all references to the occurrence of flavone and flavonol aglycones which have appeared from 1975 to 1980, and also include such ...
openaire +1 more source
Flavonol glycosides from Cephalocereus senilis
Phytochemistry, 1994A new flavonol tetraglycoside, together with two known flavonol glycosides, kaempferol 7-rhamnoside and kaempferol 3-rhamnosyl(1-->6) galactoside-7-rhamnoside, were isolated from fresh plant material of Cephalocereus senilis. The structure of the new compound was established as kaempferol 3-O-beta-D-glucopyranosyl(1-->2)-O-[alpha-L-rhamnopyranosyl (1-->
Q, Liu, M, Liu, T J, Mabry, R A, Dixon
openaire +2 more sources
Flavonol triglycosides from Blackstonia peroliata
Phytochemistry, 1990Three new flavonol triglycosides quercetin, kaempferol and isorhamnetin 3-rhamnosyl(1----2)galactoside-7-glucosides have been isolated from leaves and stems of Blackstonia perfoliata. This species together with three other genera of the tribe Gentianeae, subtribe Chlorae: Centaurium, Coutoubea and Eustoma, is unusual in producing flavonol glycosides ...
M, Kaouadji +4 more
openaire +2 more sources
Flavonol glycosides from Epimedium koreanum
Phytochemistry, 1995A novel flavonol glycoside named caohuoside-B was isolated from the aerial parts of Epimedium koreanum, along with a known flavonol glycoside, epimedokoreanoside-I. Their structures were established by spectroscopic methods. The new compound was elucidated as anhydroicaritin 3-O-beta-D-(4,6-O- diacetyl)glucopyranosyl-(1-->3)-alpha-L-(4"-O ...
W K, Li +4 more
openaire +2 more sources
Flavonol glycosides from Nitraria retusa
Phytochemistry, 1995The new flavonol trioside, isorhamnetin 3-O-4Rham-galactosylrobinobioside and five known flavonol glycosides, isorhamnetin 3-robinobioside, isorhamnetin 3-rutinoside, isorhamnetin 3-galactoside, isorhamnetin 3-glucoside and free isorhamnetin were isolated from the leaves and young stems of Nitraria retusa and characterized by UV and NMR spectroscopy ...
A F, Halim, H E, Saad, N E, Hashish
openaire +2 more sources
Flavonol glycosides from Costus spicatus
Phytochemistry, 2000Two flavonol diglycosides, tamarixetin 3-O-neohesperidoside, kaempferide 3-O-neohesperidoside and the known quercetin 3-O-neohesperidoside, together with six other known flavonoids were isolated from the leaves of Costus spicatus and their structures were elucidated by a combination of spectroscopic and chemical methods.
B P, da Silva +2 more
openaire +2 more sources
Flavonol glycosides from Lysimachia capillipes
Journal of Asian Natural Products Research, 2002Two new compounds, capilliposide I and capilliposide II, together with a known compound quercetin-3-O-(2,6-di-alpha-L-rhamnopyranosyl)-beta-D-galactopyranoside were isolated from the extracts of the whole herbs of Lysimachia capillipes. Their structures were established through their spectral data and chemical properties.
Chen, Xie +4 more
openaire +2 more sources
New Genera of Flavonols and Flavonol Derivatives As Therapeutic Molecules
Journal of the Korean Society for Applied Biological Chemistry, 2011Natural products from plants and microorganisms traditionally have provided the pharmaceutical industry with one of the most important sources of “lead” compounds in the search for new drugs and medicines. The diversity of polyphenol structure is enormous.
openaire +1 more source
Antioxidant flavonol glycosides from Dorycnium hirsutum
Chemistry of Natural Compounds, 2006Seven flavonol glycosides were isolated and identified from the aerial parts of Dorycnium hirsutum, together with catechin, D-pinitol, β-sitosterol, and stearic acid. The extracts and the isolated flavonol glycosides were evaluated for their antioxidant activity, using the DPPH test (radical scavenging) and the lipoxygenase assay (lipid peroxidation).
PISTELLI, LUISA +6 more
openaire +2 more sources