Results 51 to 60 of about 308,670 (298)

Derivatization of Rosmarinic Acid Enhances its in vitro Antitumor, Antimicrobial and Antiprotozoal Properties

open access: yesMolecules, 2019
On its own, rosmarinic acid possesses multiple biological activities such as anti-inflammatory, antimicrobial, cardioprotective and antitumor properties, and these are the consequence of its ROS scavenging and inhibitory effect on inflammation.
Silvia Bittner Fialová   +9 more
doaj   +1 more source

α-Carboxylate Phosphabetains in Alkylation and Complexation Reactions

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2023
Alkylation reactions of α-carboxylate phosphabetaines were carried out and studied to enhance the biological activity of previously synthesized carboxylate phosphabetaines.
S. R. Romanov   +7 more
doaj   +1 more source

A Novel Synthesis of Symmetric Trienes [PDF]

open access: yes, 2000
This paper describes a novel synthesis of trienes by treatment of trans-2-alkenyl triphenylphosphonium bromides with BuLi in THF solution. Compounds, 5,7,9-tetradecatriene, 1,6-diphenyl-1,3,5-hexatriene, and 2,6,11,16-tetramethyl-2,6,8,10,14 ...
Hayashi, Nobuyuki   +2 more
core   +1 more source

Frustrated Lewis pair catalyzed C–F activation of α-trifluoromethylstyrenes

open access: yesTetrahedron Chem, 2023
A frustrated Lewis pair approach is used for the monoselective C–F activation of α-trifluoromethyl styrenes. Selective C–F activation of α-trifluoromethyl styrenes with trispentafluorophenylborane (BCF) in partnership with tri(ortho-tolyl)phosphine or 2 ...
Chakyu Richard Chan   +2 more
doaj   +1 more source

Homolytic Reduction of Onium Salts

open access: yesCHIMIA, 2012
Onium salts have proved to be efficient sources of carbon-centered radicals. They can undergo homolytic reduction by single electron transfer (SET) and participate in subsequent synthetic transformations.
Louis Fensterbank   +3 more
doaj   +1 more source

Synthesis and Antibacterial Properties of Lignin-Based Quaternary Ammonium and Phosphonium Salts

open access: yesProceedings, 2023
Lignin, a naturally occurring aromatic polymer, possesses a range of biological functions [...]
Mahendra K. Mohan   +8 more
doaj   +1 more source

Dual‐Functional Polyphosphoesters for Gene Delivery: Synergistic Effects of Guanidinium and Hydrophobic Side Chains in Degradable Polymers

open access: yesAdvanced Healthcare Materials, EarlyView.
This study presents guanidinium‐ and indole‐functionalized polyphosphoesters as degradable, non‐viral gene delivery vectors. Through precise tuning of charge density and hydrophobicity, these polymers form stable polyplexes with low toxicity. Remarkably, minor structural changes yield up to 200‐fold differences in transfection efficiency, highlighting ...
Markus Kötzsche   +8 more
wiley   +1 more source

Arsonium ylides in organic synthesis [PDF]

open access: yes, 2005
postprin
But, TYS, Chung, CWY, He, HS, Toy, PH
core   +1 more source

A Solid State Zwitterionic Plastic Crystal With High Static Dielectric Constant

open access: yesAdvanced Materials, EarlyView.
Developing solid high dielectric constant materials has been a research focus in the energy storage field. In this research, we discovered a zwitterion with a plastic crystal phase. Due to the short‐range degree of freedom of the dipole moment for this zwitterion, a relatively high static dielectric constant has been achieved in its solid state ...
Zitan Huang   +7 more
wiley   +1 more source

Synthesis and Antimicrobial Activity of Carboxylate Phosphabetaines Derivatives with Alkyl Chains of Various Lengths

open access: yesJournal of Chemistry, 2013
The purpose of the present study was to investigate the antibacterial activity of fifteen novel nanosized alkyl esters of carboxylate phosphabetaine: β-(carboxyalkyl)ethyltriphenylphosphonium bromides 4–8, β-(carboxyalkyl)-β ...
Irina V. Galkina   +6 more
doaj   +1 more source

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