Results 21 to 30 of about 3,894 (208)

In Pursuit of Low Energy Phosphorescence: Late Metal Coordination Complexes of the Planar, π-extended Bipyridyl Ligand 6,6',7,7'-Biphenanthridine. [PDF]

open access: yesChemistry
Abstract The coordination chemistry of the planar, doubly π‐extended bipyridine analog, 6,6′,7,7′‐biphenanthridine (p‐biphe), is presented. The phenanthridine units in p‐biphe are fused together at the 6‐ and 7‐ positions, and the resulting rigid ligand is compared with the more flexible parent “biphe” fused only at the 6‐positions.
Nemez DB   +4 more
europepmc   +2 more sources

Isometamidium chloride and homidium chloride fail to cure mice infected with Ethiopian Trypanosoma evansi type A and B. [PDF]

open access: yesPLoS Neglected Tropical Diseases, 2018
BACKGROUND:Trypanosoma evansi is mechanically transmitted by biting flies and affects camels, equines, and other domestic and wild animals in which it causes a disease called surra.
Gebrekrustos Mekonnen   +7 more
doaj   +1 more source

Independence from kinetoplast DNA maintenance and expression is associated with multi-drug resistance in Trypanosoma brucei in vitro [PDF]

open access: yes, 2014
It is well known that several antitrypanosomatid drugs accumulate in the parasite's mitochondrion, where they often bind to the organellar DNA, the kinetoplast.
A. Schnaufer   +32 more
core   +1 more source

Dichloridobis(phenanthridine-κN)zinc(II) [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2009
In the mol-ecule of the title compound, [ZnCl(2)(C(13)H(9)N)(2)], the Zn(II) atom is four-coordinated in a distorted tetra-hedral configuration by two N atoms from two phenanthridine ligands and by two terminal Cl atoms. The dihedral angle between the planes of the phenanthridine ring systems is 69.92 (3)°.
Khoshtarkib, Zeinab   +4 more
openaire   +2 more sources

Expanding the palette of phenanthridinium cations [PDF]

open access: yes, 2014
5,6-Disubstituted phenanthridinium cations have a range of redox, fluorescence and biological properties. Some properties rely on phenanthridiniums intercalating into DNA, but the use of these cations as exomarkers for the reactive oxygen species (ROS ...
Acevedo   +114 more
core   +4 more sources

Synthetic strategies for 5- and 6-membered ring azaheterocycles facilitated by iminyl radicals [PDF]

open access: yes, 2016
The author thanks EaStCHEM for financial support.The totality of chemical space is so immense that only a small fraction can ever be explored. Computational searching has indicated that bioactivity is associated with a comparatively small number of ring ...
Walton, John Christopher
core   +2 more sources

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

Radical Fluoroalkylation Reactions [PDF]

open access: yes, 2018
Recent protocols and reactions for catalytic radical perfluoroalkylations will be described. The production of perfluoroalkyl radicals (RF = CnF2n+1, n ≥ 2), which effect both addition and substitution reactions on organic substrates, can be realized ...
Barata Vallejo, Sebastian   +2 more
core   +1 more source

Quinoline synthesis: scope and regiochemistry of photocyclisation of substituted benzylidenecyclopentanone O-alkyl and O-acetyloximes [PDF]

open access: yes, 2007
Irradiation of substituted 2-benzylidenecyclopentanone O-alkyl and O-acetyloximes in methanol provides a convenient synthesis of alkyl, alkoxy, hydroxy, acetoxy, amino, dimethylamino and benzo substituted annulated quinolines.
Austin, Mark   +3 more
core   +1 more source

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