Results 41 to 50 of about 27,016 (208)

Plasma L-ergothioneine measurement by high-performance liquid chromatography and capillary electrophoresis after a pre-column derivatization with 5-iodoacetamidofluorescein (5-IAF) and fluorescence detection [PDF]

open access: yes, 2013
Two sensitive and reproducible capillary electrophoresis and high-performance liquid chromatography-fluorescence procedures were established for quantitative determination of L-egothioneine in plasma.
Carru, Ciriaco   +7 more
core   +2 more sources

Activation and regioselectivity of five-membered cyclic thionocarbamates to nucleophilic attack [PDF]

open access: yes, 2013
The cyclic thionocarbamate of alaninol undergoes nucleophilic attack by sulfur nucleophiles at 5-C to give 1-thiopropyl-2-amine derivatives when derivatised on nitrogen with a Boc group.
Awheda, I   +3 more
core   +1 more source

Synthesis, Structural Studies, and Anticancer Properties of [CuBr(PPh3)2(4,6-Dimethyl-2-Thiopyrimidine-κS]

open access: yesCrystals, 2021
CuBr(PPh3)2(4,6-dimethylpyrimidine-2-thione) (Cu-L) was synthesized by stirring CuBr(PPh3)3 and 4,6-dimethylpyrimidine-2-thione in dichloromethane. The crystal structure of Cu-L was obtained, and indicated that the complex adopts a distorted tetrahedral ...
Bandar A. Babgi   +6 more
doaj   +1 more source

4′-Phenyl-3,4-dihydro-2H-spiro[naphthalene-1,3′-[1,2,4]triazole]-5′-thione

open access: yesActa Crystallographica Section E, 2014
In the title molecule, C17H15N3S, the phenyl group makes a dihedral angle of 57.29 (11)° with the mean plane of the triazole ring, which in turn makes an angle of 86.83 (12)° with the plane of the aromatic portion of the tetrahydronaphthalene moiety.
Joel T. Mague   +4 more
doaj   +1 more source

The effect of chalcogen substitution on the structure and spectroscopy of 4,7-dimethyl-2: H -chromen-2-one/thione analogues [PDF]

open access: yes, 2017
4,7-Dimethyl-2H-chromen-2-one (1) and its novel sulfur analogue 4,7-dimethyl-2H-chromen-2-thione (2) were synthesized and fully characterized by spectroscopic methods and mass spectrometry. The crystal structure of compound 2 has been determined by X-ray
Delgado Espinosa, Zuly Yuliana   +5 more
core   +2 more sources

About the Direction of Selective Alkylation and Cyanoethylation of Benzimidazoles, Benzothiazoles and Benzopyrimidines

open access: yesJournal of Basic and Applied Research in Biomedicine, 2022
Selective alkylation and cyanoethylation of 2H(methyl) benzimidazoles (1, 2),  benzimidazolin-2-one (3) and -2-thione (4), benzothiazolin-2-thione (5) and 2-methyl-benzopyrimidin-4-one (6, 2-methylquinazolin-4-one) have been studied.
M Olimova, B Elmuradov
doaj   +2 more sources

Structural Studies on a Mitochondrial Glyoxalase II [PDF]

open access: yes, 2005
Glyoxalase 2 is a β-lactamase fold-containing enzyme that appears to be involved with cellular chemical detoxification. Although the cytoplasmic isozyme has been characterized from several organisms, essentially nothing is known about the mitochondrial ...
Bennett, Brian   +6 more
core   +2 more sources

Bioconjugation of Green Fluorescent Protein via an Unexpectedly Stable Cyclic Sulfonium Intermediate [PDF]

open access: yes, 2012
Bioconjugation of superfolder GFP involving the formation of an unusually stable, and unprecedented, cyclic sulfonium species is described. This sulfonium can undergo smooth reaction with a range of nucleophiles to give sulfur-, selenium- and azide ...
Caddick, S   +4 more
core   +1 more source

Indole Derivatives Bearing Imidazole, Benzothiazole-2-Thione or Benzoxazole-2-Thione Moieties—Synthesis, Structure and Evaluation of Their Cytoprotective, Antioxidant, Antibacterial and Fungicidal Activities

open access: yesMolecules, 2023
In the search for new bioactive compounds, a methodology based on combining two molecules with biological properties into a new hybrid molecule was used to design and synthesize of a series of ten indole derivatives bearing imidazole, benzothiazole-2 ...
Beata Jasiewicz   +6 more
doaj   +1 more source

Ultraviolet relaxation dynamics in uracil: Time-resolved photoion yield studies using a laser-based thermal desorption source [PDF]

open access: yes, 2018
Wavelength-dependent measurements of the RNA base uracil, undertaken with nanosecond ultraviolet laser pulses, have previously identified a fragment at m/z = 84 (corresponding to the C3H4N2O+ ion) at excitation wavelengths ≤232 nm.
Bockova, Jana   +9 more
core   +2 more sources

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