Results 31 to 40 of about 65,860 (298)

Mechanism and Application of Baker–Venkataraman O→C Acyl Migration Reactions [PDF]

, 2014
This literature review focuses on the O→C acyl migration of aryl esters to yield the corresponding 1,3-dicarbonyl products—a reaction known as the Baker–Venkataraman rearrangement—and outlines their subsequent transformations.
Ameen, Dana, Snape, Timothy James
core   +1 more source

Synthesis of (E)-2-Styrylchromones and Flavones by Base-Catalyzed Cyclodehydration of the Appropriate β-Diketones Using Water as Solvent

Molecules, 2015
A low cost, safe, clean and environmentally benign base-catalyzed cyclodehydration of appropriate β-diketones affording (E)-2-styrylchromones and flavones in good yields is disclosed.
Joana Pinto, Vera L. M. Silva, Ana M. G. Silva, Artur M. S. Silva   +3 more
doaj   +1 more source

Betalains and phenolic compounds of leaves and stems of Alternanthera brasiliana and Alternanthera tenella [PDF]

, 2018
Betacyanins and phenolic compounds from acetonitrile:acidified water extracts of Alternanthera brasiliana and Alternanthera tenella were characterized and quantified using a high-performance liquid chromatography system coupled with diode array and ...
Alvarez, I., De Ancos, B., Deladino, Lorena, Molina García, A. D., Schneider Teixeira, Aline, Sánchez Moreno, C.   +5 more
core   +1 more source

Molecular Docking Simulations on Histone Deacetylases (HDAC)-1 and -2 to Investigate the Flavone Binding

Biomedicines, 2020
Histone modifications through acetylation are fundamental for remodelling chromatin and consequently activating gene expression. The imbalance between acetylation and deacetylation activity causes transcriptional dysregulation associated with several ...
Bernardina Scafuri, Paola Bontempo, Lucia Altucci, Luigi De Masi, Angelo Facchiano   +4 more
doaj   +1 more source

Habitual intake of flavonoid subclasses and risk of colorectal cancer in two large prospective cohorts [PDF]

, 2016
Background: Flavonoids inhibit the growth of colon cancer cells in vitro. In a secondary analysis of a randomized controlled trial, the Polyp Prevention Trial, a higher intake of one sub-class, flavonols, was significantly associated with reduced risk of
Aedín Cassidy, Andrew T Chan, Arts, Bobe, Cassidy, Cassidy, Charles S Fuchs, Colditz, Cutler, DerSimonian, Devore, Edward L Giovannucci, Eric B Rimm, Feskanich, Fini, Gao, Giovannucci, Hirvonen, Hu, Jennifer H Lin, Kana Wu, Kandaswami, Katharina Nimptsch, Knekt, Knekt, Kyle, Lambert, Lee, Lin, Mahmoud, McCullough, Mingyang Song, Moon, Mursu, Park, Platz, Rich-Edwards, Rimm, Rossi, Rossi, Sacks, Salvini, Shuji Ogino, Simons, Stampfer, Theodoratou, Tobias Pischon, Voorrips, Walter C Willett, Wei, Willett, Willett, Willett, Williamson, Williamson, Woo, Xuehong Zhang, Yamauchi, Yang, Yu, Yuan, Zamora-Ros, Éilis J O’Reilly   +62 more
core   +1 more source

Flavonoid Derivatives as Potential Cholinesterase Inhibitors in Scopolamine-Induced Amnesic Mice: An In Vitro, In Vivo and Integrated Computational Approach

Brain Sciences, 2022
Flavonoids are one of the most exciting types of phenolic compounds with a wide range of bioactive benefits. A series of flavone derivatives (F1–F5) were previously synthesized from substituted O-hydroxy acetophenone and substituted chloro-benzaldehydes.
Fakhria A. Al-Joufi, Syed Wadood Ali Shah, Mohammad Shoaib, Mehreen Ghias, Shafiullah, Atif Ali Khan Khalil, Syed Babar Jamal, Syed Muhammad Hassan Shah, Muhammad Zahoor   +8 more
doaj   +1 more source

Antioxidant activity of thyme waste extract in O/W emulsions [PDF]

, 2019
Thymus vulgaris (thyme) is an aromatic plant and its essential oil has been applied as antimicrobial and antioxidant due to the presence of phenolic compounds.
AAZZA, Smail, Anahi Dandlen, Susana, Antunes, Maria Dulce, EL-GEUNDOUZ, Soukaina, Gomes, Vera, Lyoussi, Badiaa, MAJDOUB, Nesrine, Miguel, Maria, Raposo, Sara   +8 more
core   +1 more source

Flavones as tyrosinase inhibitors: kinetic studies in vitro and in silico.

Phytochemical Analysis, 2020
INTRODUCTION Tyrosinase is a multifunctional copper-containing oxidase enzyme that catalyses the first steps in the formation of melanin pigments. Identification of tyrosinase inhibitors is of value for applications in cosmetics, medicine and agriculture.
R. Arroo, Suat Sarı, Burak Barut, Arzu Özel, K. Ruparelia, D. Şöhretoğlu   +5 more
semanticscholar   +1 more source

Secondary metabolites of the choosen genus iris species

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2012
Genus Iris contains more than 260 species which are mostly distributed across the North Hemisphere. Irises are mainly used as the ornamental plants, due to their colourful flowers, or in the perfume industry, due to their violet like fragrance, but lot ...
Pavol Kaššák
doaj   +1 more source

Molecular Basis for Chemical Evolution of Flavones to Flavonols and Anthocyanins in Land Plants1

Plant Physiology, 2020
Functional flavone synthase Is in liverworts are evolutionarily linked to seed plant flavanone 3β-hydroxylases, and bifunctional enzymes likely represent a transition between the two enzymes.
Dan Li, Rong Ni, Ping-ping Wang, Xiao-Shuang Zhang, Piao-Yi Wang, Ting-Ting Zhu, Chun-Jing Sun, Chang-Jun Liu, H. Lou, A. Cheng   +9 more
semanticscholar   +1 more source