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Publications récentes

oct. 2 2018

European Journal of Organic Chemistry [SOCAT]

Abstract : The bistramides family has shown antitumoral activity. More specifically bistramide K (see figure) exhibits lower toxicity than its congeners. In this work, we describe a highly stereoselective and convergent synthesis of two building blocks of the marine metabolite bistramide K. Thus, we report the synthesis of fragments C1–C18 (89) and C19–C40 (81) of bistramide K. As a challenge,...[En savoir plus]

sept. 28 2018

Chem. Commun. [LSAMM]

Abstract : A dicationic tweezer incorporating two acridinium moieties linked by a 2,6-diphenylpyridine spacer was shown to self-assemble in an entwined dimer both in acetonitrile and water. The reaction was studied according to solvent polarity, temperature and concentration conditions. The entwined structure was confirmed in the solid state via single-crystal X-ray diffraction. Reference :...[En savoir plus]

sept. 27 2018

Cover - Chemistry : A European Journal [POMAM]

Abstract : Single‐crystal EPR experiments show that the highly symmetric antiferromagnetic half‐integer spin triangle [Fe3O(O2CPh)6(py)3]ClO4⋅py (1, py=pyridine) possesses a ST=1/2 ground state exhibiting high g‐anisotropy due to antisymmetric exchange (Dzyaloshinskii–Moriya) interactions. EPR experiments under static electric fields parallel to the triangle's plane (i.e., perpendicular to the...[En savoir plus]

sept. 20 2018

J. Phys. Chem. Lett. [LCQ]

Abstract : Whereas third row transition metal carbonyl α-diimine complexes display luminescent properties and possess low-lying triplet metal-to-ligand charge transfer (MLCT) states efficiently accessible by a spin–vibronic mechanism, first row analogues hold low-lying metal-centered (MC) excited states that could quench these properties. Upon visible irradiation, different functions are...[En savoir plus]

sept. 19 2018

Chemistry : A European Journal [LCSOM]

Abstract : The reaction of H₃SiR (R=Ph, nBu) with a cationic Cp*‐and benzo[h]quinolinyl‐ based iridacycle [1b]+ gives rise to new [(Ir‐H)→SiRH₂]+ adducts. In the presence of tetrahydrofuran (THF) the latter adducts readily convert by H₂ gas elimination at subambient temperature into new THF‐stabilized metallacyclic Ir(III)‐“silylene” complexes that were characterized in situ by NMR spectroscopic...[En savoir plus]

sept. 19 2018

BBA - Biomembranes [Biophysique des membranes et RMN]

Abstract : γ-Secretase is an integral membrane protein complex and is involved in the cleavage of the amyloid precursor protein APP to produce amyloid-β peptides. Amyloid-β peptides are considered causative agents for Alzheimer's disease and drugs targeted at γ-secretase are investigated as therapeutic treatments. We synthesized new carprofen derivatives, which showed γ-secretase modulating...[En savoir plus]

sept. 18 2018

Biophysical J. [Biophysique des membranes et RMN]

Abstract : A synergistic enhancement of activities has been described for the amphipathic cationic antimicrobial peptides magainin 2 and PGLa when tested in antimicrobial assays or in biophysical experiments using model membranes. In the presence of magainin 2, PGLa changes from an in-planar alignment parallel to the membrane surface to a more transmembrane orientation when investigated in...[En savoir plus]