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Potent HIV‑1 protease inhibitors containing oxabicyclo octanol-derived P2-ligands: Design, synthesis, and X‑ray structural studies of inhibitor-HIV-1 protease complexes.
Bioorg Med Chem Lett
January 2025
Department of Infectious Diseases, Kumamoto University School of Medicine, Kumamoto 860-8556, Japan; Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; Experimental Retrovirology Section, HIV and AIDS Malignancy Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
We describe here the design, synthesis, and X-ray structural studies of a new class of HIV-1 protease inhibitors containing 8-oxabicyclo[3.2.1]octanol-derived P2 ligands.
View Article and Find Full Text PDFSelective production of olefins from methanol over a heteroatomic SAPO-34 zeolite.
Sci Bull (Beijing)
January 2025
Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK; College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China. Electronic address:
The methanol-to-olefins (MTO) process has the potential to bridge future gaps in the supply of sustainable lower olefins. Promoting the selectivity of propylene and ethylene and revealing the catalytic role of active sites are challenging goals in MTO reactions. Here, we report a novel heteroatomic silicoaluminophosphate (SAPO) zeolite, SAPO-34-Ta, which incorporates active tantalum(V) sites within the framework to afford an optimal distribution of acidity.
View Article and Find Full Text PDFHypothesis: The oil phase controls the persistence length and aqueous channel diameter of reverse wormlike micelles (RWLMs), specifically by tuning the cohesive energy density of alkanes.
Experiments: We explore the influence of alkanes with varying chain lengths on the rheological properties, structural parameters, and morphology of RWLMs. To establish a link between the solvent characteristics and the structure of RWLMs, we employ a diverse set of complementary techniques, including rheological analysis, small-angle X-ray scattering (SAXS), Fourier-transform infrared (FT-IR) spectroscopy, and cryogenic transmission electron microscopy (cryo-TEM).
Probing Interparticle Interaction and Ordering in Silica-Pluronic-Based Solutions and Emulsions by Small-Angle Scattering Techniques.
J Phys Chem B
January 2025
Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India.
Introduction of non-DLVO forces by nonionic surfactants brings about fascinating changes in the phase behavior of silica nanosuspensions. We show here that alterations in the interaction and wetting properties of negatively charged silica nanoparticles (Ludox® LS) in the presence of polyethylene oxide-polypropylene oxide-polyethylene oxide-based triblock copolymers called Pluronics lead to the formation of stable o/w Pickering emulsions and interparticle attraction-induced thermoresponsive liquid-liquid phase separations. The results make interesting comparisons with those reported for Ludox® TM nanosuspensions comprising larger silica nanoparticles.
View Article and Find Full Text PDFSub-5 Ångstrom Porosity Tuning in Calixarene-Derived Porous Liquids via Supramolecular Complexation Construction.
Angew Chem Int Ed Engl
January 2025
Department of Chemistry, University of Tennessee Knoxville, Knoxville, TN, 37996, USA.
Sub-Ångstrom-level porosity engineering, which is appealing in gas separations, has been demonstrated in solid carbon, polymer, and framework materials but rarely achieved in the liquid phase. In this work, a gas molecular sieving effect in the liquid phase at sub-5 Ångstrom scale is created via sophisticated porosity tuning in calixarene-derived porous liquids (PLs). Type II PLs are constructed via supramolecular complexation between the sodium salts of calixarene derivatives and crown ether solvents.
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