Results 11 to 20 of about 33,864 (335)

Cysteine Sulfoxides Enhance Steroid Hormone Production via Activation of the Protein Kinase A Pathway in Testis-Derived I-10 Tumor Cells

open access: yesMolecules, 2020
Testosterone plays an important role in male sexual characteristics and maturation, and decreased testosterone levels increase the risk of several diseases.
Yuya Nakayama   +5 more
doaj   +1 more source

A Study on the Chemistry and Biological Activity of 26-Sulfur Analogs of Diosgenin: Synthesis of 26-Thiodiosgenin S-Mono- and Dioxides, and Their Alkyl Derivatives

open access: yesMolecules, 2022
A chemoselective procedure for MCPBA oxidation of 26-thiodiosgenin to corresponding sulfoxides and sulfone was elaborated. An unusual equilibration of sulfoxides in solution was observed.
Aneta M. Tomkiel   +5 more
doaj   +1 more source

Transfer of electrophilic NH using convenient sources of ammonia: direct synthesis of N–H sulfoximines from sulfoxides [PDF]

open access: yes, 2016
The transfer of nitrogen atoms is extremely valuable in the preparation of medicinal compounds. Here, a new system for NH transfer is developed to prepare sulfoximines, which are emerging as valuable motifs for drug discovery.
Bentley   +43 more
core   +1 more source

Enantiomeric oxidation of organic sulfides by the filamentous fungi Botrytis cinerea, Eutypa lata and Trichoderma viride [PDF]

open access: yes, 2007
The biotransformations of a series of substituted sulfides were carried out with the filamentous fungi Botrytis cinerea, Eutypa lata and Trichoderma viride.
Annunziata   +28 more
core   +2 more sources

Extracting the sample response function from experimental two-dimensional terahertz-infrared-visible spectra [PDF]

open access: yes, 2022
Terahertz molecular motions are often probed by high-frequency molecular oscillators in different types of non-linear vibrational spectroscopy. Recently developed two-dimensional terahertz-infrared-visible spectroscopy allows direct measuring of this coupling and, thus, obtaining site-specific terahertz vibrational spectrum.
arxiv   +1 more source

Modular polyoxometalate-layered double hydroxides as efficient heterogeneous sulfoxidation and epoxidation catalysts [PDF]

open access: yes, 2018
Selective sulfoxidation of sulfides and epoxidation of olefins are two types of important organic reactions and the corresponding products of sulfoxides, sulfones and epoxides are widely used as raw materials in industrial processes.
Al-Maksoud   +57 more
core   +1 more source

Revisiting the composition dependence of the properties of water-dimethyl sulfoxide liquid mixtures. Molecular dynamics computer simulations [PDF]

open access: yesCondensed Matter Physics, 2022, vol. 25, No. 3, 33202, 2022
We have revisited the composition dependence of principal properties of liquid water-DMSO mixtures by using the isobaric-isothermal molecular dynamics computer simulations. A set of non-polarizable semi-flexible models for the DMSO molecule combined with the TIP4P-2005 and TIP4P/$\varepsilon$ water models is considered.
arxiv   +1 more source

Degradation of lansoprazole and omeprazole in the aquatic environment [PDF]

open access: yes, 2006
Lansoprazole and omeprazole degrade in water leading to sulfides, benzimidazolones and a red complex material. Degradation is accelerated in acid medium and by solar simulator irradiation.
BRIGANTE M.   +5 more
core   +1 more source

On the properties of a single OPLS-UA model curcumin molecule in water, methanol and dimethyl sulfoxide. Molecular dynamics computer simulation results [PDF]

open access: yesCondens. Matter Phys., vol. 20, No. 2, 23003 (2017), 2017
The properties of model solutions consisting of a solute --- single curcumin molecule in water, methanol and dimethyl sulfoxide solvents have been studied using molecular dynamics (MD) computer simulations in the isobaric-isothermal ensemble. The united atom OPLS force field (OPLS-UA) model for curcumin molecule proposed by us recently [J. Mol.
arxiv   +1 more source

Highly Efficient Selective Oxygenation of Sulfides to Sulfoxides by Oxalic Acid Dihydrate in the Presence of H2O2

open access: yesE-Journal of Chemistry, 2012
A highly efficient method for the oxidation of sulfides to sulfoxides using oxalic acid dihydrate in the presence of hydrogen peroxide has been developed.
Masoud Mokhtary   +2 more
doaj   +1 more source

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