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Metformin and respiratory chain complex I: the last piece of the puzzle?

01-11-2014 | Fontaine E, Biochemical Journal, 2014

Metformin is the most widely prescribed drug used to treat patients affected by Type2 diabetes. Metformin has also been shown to prevent some forms of cell death; however, evidence suggests that it may have anti-neoplastic properties. All of these effects have been attributed to complex I ...

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NTBI unveiled by chelatable fluorescent beads

01-11-2014 | Sebastiani G; Pantopoulos K, Biochemical Journal, 2014

Non-transferrin-bound iron (NTBI) emerges in plasma of patients with systemic iron overload, but has also been documented in further pathological conditions. Quantification of NTBI can be useful for diagnosis and management of these disorders. However, currently available detection methods are ...

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From 1 [rightward arrow] 3 dendritic designs to fractal supramacromolecular constructs: understanding the pathway to the Sierpinski gasket

21-10-2014 | George R. Newkome; Charles N. Moorefield, Chemical Society Reviews, 2014

The iterative synthetic protocols used for dendrimer construction were developed based on the desire to easily craft highly branched macromolecules with ideally an exact mass and tailored functionality. Inspired by arboreal design and precursors of the utilitarian macromolecules known as ...

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An Efficient Continuous Flow Approach to Furnish Furan-Based Biaryls.

21-10-2014 | Christopher Gordon; Trieu Trinh; Lacey Hizartzidis; Andrew Lin; Adam McCluskey; David Harman, Organic & Biomolecular Chemistry, 2014

Suzuki cross-couplings of 5-formyl-2-furanylboronic acid with activated or neutral aryl bromides were performed under continuous flow conditions in the presence of (Bu)4N+F- and the immobilised t-butyl based palladium catalyst CatCart™ FC1032™. Deactivated aryl bromides and activated aryl ...

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Evidence for the intrinsic nature of band-gap states electrochemically observed on atomically flat TiO2(110) surfaces

21-10-2014 | Shintaro Takata; Yoshihiro Miura; Yuji Matsumoto, Physical Chemistry Chemical Physics, 2014

Using an ultra-high vacuum (UHV) electrochemistry approach with pulsed laser deposition (PLD), we investigated the band-gap state for TiO2(110). In the PLD chamber, a TiO2(110) surface was cleaned by annealing in O2 enough for it to exhibit a sharp (1 × 1) reflection high energy electron ...

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o-Benzyne fragmentation and isomerization pathways: a CASPT2 study

21-10-2014 | Giovanni Ghigo; Andrea Maranzana; Glauco Tonachini, Physical Chemistry Chemical Physics, 2014

The mechanisms of the fragmentation and isomerization pathways of o-benzyne were studied at the multi-configurational second-order perturbative level [CAS(12,12)-PT2]. The direct fragmentation of o-benzyne to C2H2 + C4H2 follows two mechanisms: a concerted mechanism and a stepwise mechanism. ...

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Importance of D-glycopyranoside structure to the bioactivity and target affinity of jasmonic acid glucoside

21-10-2014 | Minoru Ueda; Gangqiang Yang; Yuuki Nukadzuka; Yasuhiro Ishimaru; Satoru Tamura; Yoshiyuki Manabe, Organic & Biomolecular Chemistry, 2014

12-O-β-D-Glucopyranosyljasmonic acid (JAG) induces nyctinastic leaf-folding of Samanea saman. The SAR studies of 1 revealed the unique role of its glycone moiety. Biological activity and target affinity of JAG were affected by the stereochemistry of the glycone moiety. JAG belongs to a unique ...

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Asymmetric organocatalytic SOMO reactions of enol silanes and silyl ketene (thio)acetals

21-10-2014 | Pavol Tisovský; Mária Mečiarová; Radovan Šebesta, Organic & Biomolecular Chemistry, 2014

Organocatalytic SOMO reactions can provide access to various α-functionalized carbonyl compounds. Chiral imidazolidinones catalysed the organo-SOMO reactions of aldehydes and ketones with cyclic and acyclic enol silanes. The resulting chiral dicarbonyl compounds were obtained in yields of up to ...

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Solution structure of a cucurbit[8]uril induced compact supramolecular protein dimer

21-10-2014 | Dang Dang; Ralph Bosmans; Christian Moitzi; Ilja Karina Voets; Luc Brunsveld, Organic & Biomolecular Chemistry, 2014

Supramolecular assembly of a beta-barrel protein via cucurbit[8]uril results in compact z-shaped protein dimers. SAXS data reveal the formation of a well ordered protein dimer, notwithstanding being connected by a reversible and flexible peptide linker, and highlight the supramolecular induced ...

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Probing the kinetic energy-release dynamics of H-atom products from the gas-phase reaction of O(3P) with vinyl radical C2H3

21-10-2014 | Su-Chan Jang; Jong-Ho Choi, Physical Chemistry Chemical Physics, 2014

The gas-phase radical–radical reaction dynamics of ground-state atomic oxygen O(3P) with vinyl radicals C2H3 has been studied by combining the results of vacuum-ultraviolet laser-induced fluorescence spectroscopy in a crossed beam configuration with ab initio calculations. The two radical ...

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