Results 31 to 40 of about 22,451 (231)

Deprotonative C(sp3)/C(sp2)–H (Multi)Silylation of (Hetero)Arenes Mediated by NaTMP

open access: yesAngewandte Chemie, EarlyView.
An operationally simple protocol using a strongly basic sodium amide in combination with sterically emcumbered silicon electrophiles enables the deprotonative C–H (multi)silylation of a myriad of (hetero)arenes. Mechanistic investigations highlight the pivotal role of steric and coordination effects in controlling the regioselectivity and efficiency of
David Sánchez‐Roa   +6 more
wiley   +2 more sources

Physicochemical analysis of rotavirus segment 11 supports a 'modified panhandle' structure and not the predicted alternative tRNA-like structure (TRLS) [PDF]

open access: yes, 2013
.Rotaviruses are a major cause of acute gastroenteritis, which is often fatal in infants. The viral genome consists of 11 double-stranded RNA segments, but little is known about their cis-acting sequences and structural elements.
A Heerschap   +47 more
core   +1 more source

Isolation and Reactivity of a Square‐Planar Trisamido Silane

open access: yesAngewandte Chemie, EarlyView.
We report the synthesis and comprehensive characterisation of a square‐planar Si(+IV) hydride supported by an unsymmetric, trianionic and dearomatised N,N,N‐pincer ligand. This system enables element–ligand cooperative reactivity as an alternative to silicon‐centred redox chemistry, illuminating a largely unexplored regime in high‐valent silicon ...
David M. J. Krengel   +5 more
wiley   +2 more sources

Physicochemical Properties, Chemical Compositions and Antioxidant Activities of Rhizome Oils from Two Varieties of Kaempferia galanga

open access: yesIndonesian Journal of Chemistry, 2022
Kaempferia galanga is a tropical plant with an impressive range of food and medicinal uses. This study, therefore, investigated the variation in yields, physicochemical properties, chemical compositions, and antioxidant activities of rhizome oils from ...
I Wayan Muderawan   +2 more
doaj   +1 more source

Insights into DNA platination within unusual structural settings [PDF]

open access: yes, 2011
2D [1H, 15N] HSQC NMR spectroscopy has been used to monitor reaction and product formation between [Pt(15NH3)2I2] and nucleic acids possessing irregular topologies and containing site specific phosphorothioate substitution in the phosphodiester backbone.
Harvie, Stephanie   +2 more
core   +2 more sources

New promising transthyretin stabilizers for cardiac amyloidosis treatment

open access: yesEuropean Journal of Medicinal Chemistry Reports
Transthyretin (TTR) is a plasma protein responsible for transport of thyroxine and retinol, the latter through binding with the retinol-binding protein.
Lidia Ciccone   +14 more
doaj   +1 more source

SIT1 transporter as a potential novel target in treatment of COVID-19

open access: yesBiomolecular Concepts, 2021
Studies published earlier this year demonstrated the association of the solute carrier SLC6A20 gene with the risk and severity of COVID-19. The SLC6A20 protein product (Sodium-dependent Imino Transporter 1 (SIT1)) is involved in the transport of amino ...
Semiz Sabina
doaj   +1 more source

Evidence for a quadruplex structure in the polymorphic hs1.2 enhancer of the immunoglobulin heavy chain 3’ regulatory regions and its conservation in mammals [PDF]

open access: yes, 2016
Regulatory regions in the genome can act through a variety of mechanisms that range from the occurrence of histone modifications to the presence of protein-binding loci for self-annealing sequences.
Cacchione, Stefano   +9 more
core   +2 more sources

Stereoselective Synthesis and Cytoselective Toxicity of Monoterpene-Fused 2-Imino-1,3-thiazines

open access: yesMolecules, 2014
Starting from pinane-, apopinane- and carane-based 1,3-amino alcohols obtained from monoterpene-based β-amino acids, a library of monoterpene-fused 2-imino-1,3-thiazines as main products and 2-thioxo-1,3-oxazines as side-products were prepared via two ...
Zsolt Szakonyi   +3 more
doaj   +1 more source

Genomic and experimental evidence for multiple metabolic functions in the RidA/YjgF/YER057c/UK114 (Rid) protein family. [PDF]

open access: yes, 2015
BackgroundIt is now recognized that enzymatic or chemical side-reactions can convert normal metabolites to useless or toxic ones and that a suite of enzymes exists to mitigate such metabolite damage.
Cooper, Arthur JL   +8 more
core   +2 more sources

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