Results 31 to 40 of about 6,249 (189)

Novel and colourful flavonoids - characterisation, secondary structures and properties [PDF]

open access: yes, 2021
This dissertation focuses on isolation and structural elucidation of flavonoid pigments. The properties of these pigments have been explored, in terms of their chemical properties, especially regarding secondary structures in neutral solvents ...
Berland, Helge
core   +1 more source

Machine Learning Accelerates Crystallization for Structure Determination

open access: yesAngewandte Chemie, EarlyView.
Single‐crystal x‐ray diffraction (SCXRD) is often constrained by the difficulty of obtaining suitable crystals. Here, a machine learning‐accelerated co‐crystal discovery workflow is established for a crystalline mate strategy that achieves over 95% prediction accuracy and experimentally delivers 114 co‐crystals from 120 candidates.
Cui‐Zhou Luan   +10 more
wiley   +2 more sources

The Use of Flavylium Salts as Dynamic Inhibitor Moieties for Human Cb5R [PDF]

open access: yes, 2022
Authors would like to acknowledge the Biochemistry Department in the Faculty of Medicine at the Universidad Autónoma de Madrid for the equipment and support for some of the required reagent purchases.
Basilio, Nuno   +5 more
core   +2 more sources

Strategies Toward Accessing Enantioenriched (Hetero)Benzo‐Fused 5‐ and 6‐ Membered Rings via Intermolecular Carbometalation

open access: yesAngewandte Chemie, EarlyView.
The use of transition‐metal catalysts and design of chiral ligands have allowed chemists to access highly functionalized benzofused 5‐ and 6‐ membered rings in high yield and enantioselectivity. A common strategy used relies on an intermolecular carbometalation across alkynes and olefins, usually followed by a subsequent intramolecular carbometalation.
Clara Jans   +3 more
wiley   +2 more sources

Thermal analysis of aliphatic polyester blends with natural antioxidants [PDF]

open access: yes, 2020
The aim of this research was to enhance thermal stability of aliphatic polyester blends via incorporation of selected natural antioxidants of plant origin.
Kiersnowski, Adam   +2 more
core   +1 more source

The natural compound trans‐chalcone induces programmed cell death in Arabidopsis thaliana roots

open access: yesPlant, Cell & Environment, 2012
ABSTRACTChalcone (1,3‐diphenyl‐2‐propen‐1‐one) is an aromatic ketone precursor of important molecules in plants such as flavonoids or anthocyanins. Its phytotoxicity has been demonstrated on different plant species, but to date little is known about the mechanisms of action of this secondary metabolite at plant cellular level.
Díaz-Tielas, Carla   +4 more
openaire   +3 more sources

Chalcones Repressed the AURKA and MDR Proteins Involved in Metastasis and Multiple Drug Resistance in Breast Cancer Cell Lines

open access: yesMolecules, 2018
In the present investigation, trans-chalcone and licochalcone A were tested against MCF-7 and BT-20 breast cancer cell lines for anti-tumor activity.
Tatiana Takahasi Komoto   +8 more
doaj   +1 more source

Photochemistry of 5-Hydroxy-4'-Dimethylaminoflavylium in the presence of SDS micelles. The role of metastable states of flavylium cation-quinoidal base and trans-chalcones [PDF]

open access: yes, 2020
UIDB/50006/2020 UIDP/50006/2020 PTDC/QUI-OUT/29013/2017 SFRH/BD/143309/2019 SFRH/BD/146549/2019 MEX/Ref. 288188 IF/00225/2015The multistate of species originated by the compound 5-hydroxy-4′-dimethylaminoflavylium was studied in the presence of sodium ...
Araújo, Paula   +6 more
core   +1 more source

Phytotoxic Potential of Trans-chalcone on Crop Plants and Model Species

open access: yesJournal of Plant Growth Regulation, 2013
Chalcones are flavonoid precursors that recently have been found to disrupt mitochondrial function and induce apoptosis in Arabidopsis radicles. However, whether they are potentially useful for weed control as selective herbicides depends on whether they are phytotoxic for important weeds and are not toxic for crops.
Díaz-Tielas, Carla   +4 more
openaire   +2 more sources

Surface intermediate species of the 4-isobutylacetophenone adsorption-reaction over fosfotungstic Wells-Dawson heteropoly acid [PDF]

open access: yes, 2009
Surface adsorbed species of isobutylbenzene and 4-isobutylacetophenone on bulk fosfotungstic Wells-Dawson acid have been screened in the present investigation.
Briand, Laura Estefania   +2 more
core   +3 more sources

Home - About - Disclaimer - Privacy