Results 141 to 150 of about 3,891 (216)

Flavonol glycosides fromMonnina sylvatica

Phytochemistry, 1991
A new kaempferol triglycoside and three known kaempferol glycosides, among them two apiosides, have been isolated from the aerial parts of Monnina sylvatica. The structures were established on the basis of acid and enzymatic hydrolysis and spectral data (UV, 1H and 13CNMR, NOE difference measurements, D/CI and FAB-MS) of the isolates and of some ...
A, Bashir, M, Hamburger, M P, Gupta, P N, Solis, K, Hostettmann   +4 more
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Flavonol glycosides from Eupatorium tinifolium

Phytochemistry, 1990
Abstract Two new flavonol glycosides, 3′-methylquercetagetin 3-O-galactoside and 3′-methylquercetagetin 3-O-glucoside, have been isolated from the ethyl acetate extract of Eupatorium tinifolium. The structure of these compounds has been established on the basis of chemical and spectral data.
M. DAGOSTINO, F. DESIMONE, A. DINI, E. RAMUNDO, ZOLLO, FRANCO   +4 more
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Flavonol glycosides from Dasymaschalon sootepense

Phytochemistry, 1998
Two novel flavonol glycosides have been isolated from a methanolic extract of Dasymaschalon sootepense leaves. They are the 3'-neohesperidoside and 3'(6G-alpha-rhamnosylneohesperidoside) of quercetin 3,7-dimethyl ether.
A, Sinz, R, Matusch, T, Santisuk, S, Chaichana, V, Reutrakul   +4 more
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Flavonol Glycosides from Dryas octopetala

Journal of Natural Products, 1984
Six flavonol glycosides and ent-epicatechin were isolated from Dryas octopetala and their structures elucidated by chemical and spectroscopic methods. Two new flavonoids, 3-O-alpha-L-arabinofuranosyl-8-methoxyquercetin (2) and 3-O-beta-galactopyranosyl-8-methoxykaempferol (6), were identified along with 3-O-beta-D-galactopyranosylquercetin (hyperin) (3)
SERVETTAZ O. ., COLOMBO, Maria Laura, DEBERNARDI M., UBERTI E., VIDARI G., VITAFINZI P.   +5 more
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Flavonols drive plant microevolution

Nature Genetics, 2016
The idea that pollinators are in large part responsible for the diversity of flowering plants dates back more than 150 years to Darwin's work, but even modern scientists have struggled to identify specific 'speciation genes' and determine how they influenced flower-pollinator interactions.
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Flavonol glycosides from Calotropis gigantea

Phytochemistry, 1992
Besides 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
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Flavones and flavonols

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 ...
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Flavonol glycosides from Cephalocereus senilis

Phytochemistry, 1994
A 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
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Flavonol triglycosides from Blackstonia peroliata

Phytochemistry, 1990
Three 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, A, Doucouré, A M, Mariotte, A J, Chulia, F, Thomasson   +4 more
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Flavonol glycosides from Epimedium koreanum

Phytochemistry, 1995
A 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, P G, Xiao, G Z, Tu, L B, Ma, R Y, Zhang   +4 more
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