Results 111 to 120 of about 29,047 (251)

Synthesis and Structures of Novel Chiral Cyclic Hypervalent Iodine(III) Reagents for Metal‐Free Ligand‐Transfer Reactions

open access: yesChemistry – A European Journal, Volume 32, Issue 41, 3 November 2026.
Several new chiral cyclic hypervalent iodine(III) reagents have been synthesized and characterized. Carbon‐based ligands were successfully installed onto the hypervalent iodine centers, giving thus access to novel chiral cyano‐, trifluoromethyl‐ or alkynyl‐bearing λ3‐iodanes.
Emmanuel Valzer   +4 more
wiley   +1 more source

Triple‐Helix Biomolecules Construct Self‐Adaptive Multi‐Phase Interfaces for Dendrites Immunized Zinc Metal Anodes

open access: yesAdvanced Science, Volume 13, Issue 61, 3 November 2026.
A bio‐derived triple‐helix framework enables adaptive interphase engineering for aqueous Zn metal batteries. Directional Zn2+ migration channels and dynamic transformation into β‐sheet domains construct an optimized solid electrolyte interphase with flexible–rigid synergy, delivering dendrite‐free Zn deposition and exceptional long‐term battery cycling
Tianyi Wang   +11 more
wiley   +1 more source

Electronic Chip‐Mimetic Medical Implants for Controllable Sonothermal Treatments

open access: yesAdvanced Science, Volume 13, Issue 61, 3 November 2026.
Inspired by the thermal effect of working electronic chips, which consist of various heterostructures, an sonothermal‐responsive platform has been developed through constructing metal‐semiconductor interface on implants. Biofilm infection and deep vein thrombosis can be successfully treated by controllable ultrasound treatments.
Zhengdong Zhang   +10 more
wiley   +1 more source

Polyglycine Strands Within a Collagen Triple Helix

open access: yesBiopolymers, Volume 117, Issue 6, November 2026.
ABSTRACT The collagen triple helix is the most abundant protein structural motif in animals. It tolerates any amino acid in its Xaa and Yaa positions but demands glycine (Gly) at every third position, where the residue packs into the sterically forbidding core of the triple helix and donates the recurring interstrand N–H⋯OC hydrogen bond that stitches
Wasin Tiarawut   +3 more
wiley   +1 more source

Metalloamination/Cyclization of Zinc(II) Amides Derived from N,N-Dimethylhydrazinoalkenes—Applications for the Direct C-SP2 Functionalization of Aryl and Vinyl Electrophiles

open access: yesInorganics
Treatment of N,N-dimethylhydrazinoalkenes with diethylzinc followed by exposure of the resulting ethylzinc amides to high vacuum drives a Schlenck redistribution metalloamination/cyclization to generate the corresponding bis(organozinc) intermediates in ...
Jérome Lépeule   +2 more
doaj   +1 more source

Direct and Stereospecific [3+2] Synthesis of Pyrrolidines from Simple Unactivated Alkenes

open access: yes, 2017
Pyrrolidines are important heterocyclic compounds with endless applications in organic synthesis, metal catalysis, and organocatalysis. Their potential as ligands for first-row transition-metal catalysts inspired a new method to access complex poly ...
Samuel Suárez-Pantiga   +14 more
core   +1 more source

Salicylic Acid as a Food‐Derived Bioactive Constituent of Tiaoqi Daozhi Decoction: A Potential Functional Food Ingredient to Restoring Gut Barrier Function in Constipation‐Predominant IBS

open access: yesFood Science &Nutrition, Volume 14, Issue 11, November 2026.
Tiaoqi Daozhi Decoction (TQDZD) is a classic formulation composed of eight medicine‐food homologous botanicals. UPLC‐MS/MS profiling identified 1962 non‐redundant compounds in its aqueous extract, predominantly phenolic acids and flavonoids, of which 107 metabolites were systemically bioavailable.
Min Duan   +4 more
wiley   +1 more source

Plasmepsins as Antimalarial Drug Targets—Then, Now, and the Future

open access: yesMedicinal Research Reviews, Volume 46, Issue 6, Page 1574-1602, November 2026.
ABSTRACT Malaria is a devastating disease caused by Plasmodium parasites. Plasmodium parasites express ten cathepsin D‐like aspartyl proteases, called plasmepsins (PMs). These PMs have diverse roles fulfill diverse functions throughout the parasite's lifecycle, though several exhibit functional redundancies. Among them, PMV, PMIV, and PMX are essential
Brad E. Sleebs
wiley   +1 more source

Nucleophilic Aromatic Substitution in the Gas Phase

open access: yesJournal of Physical Organic Chemistry, Volume 39, Issue 11, November 2026.
In this review, we highlight experimental studies of gas‐phase SNAr. Studying reactions in the gas phase provides invaluable information on intrinsic reactivity by eliminating the complications of solvent effects. Because SNAr is a fundamental reaction in chemical research and organic synthesis, understanding its underlying reactivity and mechanisms is
Daniel N. Hirsch   +2 more
wiley   +1 more source

Direct Access to Chiral Piperidines by Enantioselective HAT‐Initiated C(sp3)─H Oxidation

open access: yesAngewandte Chemie, Volume 138, Issue 44, 26 October 2026.
The direct desymmetrization of piperidines is achieved through manganese‐catalyzed enantioselective α‐C(sp3)─H oxidation with hydrogen peroxide, affording versatile chiral N,O‐acetals in good yields and with high enantio‐ and diastereoselectivity. These intermediates provide access to diverse functionalized piperidines with retention of chirality ...
Sethuraman Muthuramalingam   +5 more
wiley   +2 more sources

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