Results 31 to 40 of about 5,776 (241)

Come-back of phenanthridine and phenanthridinium derivatives in the 21st century

open access: yesBeilstein Journal of Organic Chemistry, 2014
Phenanthridine derivatives are one of the most intensively studied families of biologically active compounds with efficient DNA binding capability. Attracting attention since DNA structure discovery (1960s), they were early recognized as a symbol of DNA ...
Lidija-Marija Tumir   +2 more
doaj   +1 more source

Further Studies on the Pyrolytic Domino Cyclization of Stabilized Phosphonium Ylides Bearing an Ortho-Aminophenyl Group

open access: yesMolecules, 2018
Four new, stabilized phosphonium ylides containing a 2-(benzyl(methyl)amino)phenyl group have been prepared and characterized and are found, upon pyrolysis under gas-phase flow conditions, to lose Ph3PO and benzyl radicals to afford new heterocyclic ...
R. Alan Aitken   +2 more
doaj   +1 more source

Diversified Fluoroalkylation of Alkenes Using Quaternary Fluoroalkyl Alcohols as the Fluoroalkylating Reagents. [PDF]

open access: yesAdv Sci (Weinh)
A universal photoredox‐catalyzed fluoroalkylation approach by utilizing new (fluoroalkyl)diaryl methanols as versatile fluoroalkylating reagents is developed. This protocol facilitates the synthesis of mono‐, di‐, tri‐, and even polyfluoroalkylation of a broad scope of alkenes.
Lu H, Fan Z, Zou Y, Zhang A.
europepmc   +2 more sources

Monofunctional platinum(ii) anticancer complexes based on multidentate phenanthridine-containing ligand frameworks.

open access: yesDalton Transactions, 2020
Phenanthriplatin is a leading preclinical anticancer Pt complex distinguished by a phenanthridine ligand that facilitates DNA-targeted covalent binding via intercalation. We report here that Pt(ii) complexes incorporating phenanthridine into a chelating,
Issiah B. Lozada   +6 more
semanticscholar   +1 more source

6-(3,4-Difluorophenyl)-7,8,13,14-tetrahydrodibenzo[c,k]phenanthridine

open access: yesIUCrData, 2020
In the title compound, C27H19F2N, the five-fused-ring system is highly puckered and the dihedral angle between the central pyridine ring and pendant difluorobenzene ring is 45.12 (12)°.
Yiwen Fang, Bingbing Liu, Zhixiang Jia
doaj   +1 more source

Antibacterial Alkaloids from Chelidonium Majus Linn (Papaveraceae) Against Clinical Isolates of Methicillin-Resistant Staphylococcus Aureus

open access: yesJournal of Pharmacy & Pharmaceutical Sciences, 2009
Purpose. This study describes the antibacterial effect of extracts and compounds isolated from the aerial part of Chelidonium majus Linn. (Papaveraceae) acting against clinical strains of methicillin-resistant Staphylococcus aureus (MRSA). Methods.
Guo Ying Zuo   +5 more
doaj   +1 more source

Relaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations

open access: yesJournal of Non-Crystalline Solids: X, 2021
Here, we study the structural relaxation kinetics in modified binary (i.e., ternary) mixtures with strong concentration fluctuation imposed by a polar picoline and an apolar triphenylethylene by adding a surfactant phenanthridine.
Xiao Jin, Li-Min Wang
doaj   +1 more source

Metal-Free Photoredox Catalyzed Cyclization of O-(2,4-Dinitrophenyl)oximes to Phenanthridines

open access: yesMolecules, 2016
A metal-free visible-light photoredox-catalyzed intermolecular cyclization reaction of O-2,4-dinitrophenyl oximes to phenanthridines was developed. In this study, the organic dye eosin Y and i-Pr2NEt were used as photocatalyst and terminal reductant ...
Xiubin Liu   +5 more
doaj   +1 more source

Nitrogen‐Centered Organic Persistent Radicals Catalyze Redox‐Neutral C─C Bond Forming Reactions

open access: yesAngewandte Chemie, Volume 137, Issue 33, August 11, 2025.
Kuhn verdazyls, discovered over 60 years ago, are shown as effective catalysts for the first time. Their tunable redox properties enable organocatalytic redox‐neutral C─H arylation and C─H trifluoromethylation reactions without light activation.
Shrouq Mujahed   +4 more
wiley   +2 more sources

Structural and luminescent properties of co-crystals of tetraiodoethylene with two azaphenanthrenes

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
Two new co-crystals, tetraiodoethylene–phenanthridine (1/2), 0.5C2I4·C13H9N (1) and tetraiodoethylene–benzo[f]quinoline (1/2), 0.5C2I4·C13H9N (2), were obtained from tetraiodoethylene and azaphenanthrenes, and characterized by IR and fluorescence ...
Yu-Jin Cui, Feng Su, Wei-Jun Jin
doaj   +1 more source

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