Results 141 to 150 of about 37,807 (249)

High-pressure activation for the solvent- and catalyst-free syntheses of heterocycles, pharmaceuticals and esters

Beilstein Journal of Organic Chemistry
High hydrostatic pressure (HHP) was found to be an efficient activation method in several catalyst- and solvent-free reactions and has found application for the syntheses of heterocycles and the preparation of active pharmaceutical ingredients (APIs) via
Kelsey Plasse, Valerie Wright, Guoshu Xie, R. Bernadett Vlocskó, Alexander Lazarev, Béla Török   +5 more
doaj   +1 more source

Synthesis, X‐Ray Analysis, Anticancer Activity, Computational, and in Silico Studies of New Thiophene Pyrazole Conjugates

ChemistryOpen, Volume 15, Issue 6, June 2026.
Two new thiophene–pyrazole derivatives, 8a and 8b, were synthesized from thiophene 3 precursor and fully characterized. The structure of 8a was confirmed by single‐crystal X‐ray diffraction, which revealed a nonplanar conformation stabilized by NH···O hydrogen bonding and weak intermolecular contacts.
Abdullatif Bin Muhsinah, Nabila A. Kheder, Ismail A. Elhaty, Yahia N. Mabkhot   +3 more
wiley   +1 more source

Design Rules for Controlling Connectivity, Topology, and Sorting Using Hydrogen‐Bonded Pairs and Aromatic Components in Palladium(II)‐Based Interlocked and Foldameric Systems

Angewandte Chemie, Volume 138, Issue 22, 25 May 2026.
We have established a set of design rules which combine Pd(II) metal coordination, complementary geometries, complementary interligand hydrogen bonding and π─π interactions for predictable self‐assembly of Pd(II)‐based species such as metallo‐foldamers, cyclic species a metallo‐interlocked clippane. The species persist in a combinatorial mixture due to
Jess L. Algar, Jordan N. Smith, Dan Preston   +2 more
wiley   +2 more sources

Virtual Screening and Zebrafish Phenotype‐Based Evaluation Argues Against Repurposing 4‐Phenylbutyrate for STXBP1‐Related Disorders

Pharmacology Research &Perspectives, Volume 14, Issue 3, June 2026.
ABSTRACT Syntaxin‐binding protein 1 (STXBP1) mutations lead to severe epilepsy, intellectual disability, developmental delay, and movement disorder. Effective treatments for these conditions do not exist. Recent studies in Munc18‐1 (STXBP1) C. elegans models demonstrate that 4‐phenylbutyrate (4‐PBA) or related pharmacological chaperones stabilize ...
Aline Frick, Paige Whyte‐Fagundes, Scott C. Baraban   +2 more
wiley   +1 more source

Human Liver Alcohol Dehydrogenase: Inhibition by Pyrazole and Pyrazole Analogs. [PDF]

Acta Chemica Scandinavica, 1969
Ting-Kai Li, Hugo Theorell, Charles Larsen, Per Halfdan Nielsen, Alf A. Lindberg, Gert Jansen, Bo Lamm, Benny Samuelsson   +7 more
openaire   +2 more sources

Susceptibility of Phthorimaea absoluta (Meyrick) (Lepidoptera: Gelechiidae) to novel and established insecticides in Brazil: resistance survey, baseline, and implications for management

Pest Management Science, Volume 82, Issue 6, Page 5662-5671, June 2026.
Baseline susceptibility of Phthorimaea absoluta to novel insecticides isocycloseram and tolfenpyrad was established in Brazil. Diagnostic doses were proposed for early resistance detection. Early tolfenpyrad tolerance and abamectin‐driven cross‐tolerance to isocycloseram via oxidases highlight cross‐resistance risks, emphasizing the need for routine ...
Vitor Quintela, Teófilo P Langa, José VCR Dantas, Marcos de Oliveira, Herbert AA Siqueira   +4 more
wiley   +1 more source

Curcumin derived pyrazoles and related compounds

, 2016
In this comprehensive review we discuss the publications reporting pyrazoles derived from curcumin, curcuminoids and hemi-curcuminoids (149 examples) together with some biological and pharmacological ...
Claramunt, R.M., Elguero, J., Sanz, D., Nieto, C.I.   +3 more
core  

Structural insights into the binding mode of the hypnotic drug vornorexant to orexin receptors

Acta Crystallographica Section F, Volume 82, Issue 6, Page 201-207, June 2026.
The crystal structure of the human orexin type 2 receptor–vornorexant complex (3.29 Å resolution) and orexin type 1 receptor docking revealed a conserved U‐shaped binding conformation, explaining the high affinity and balanced dual antagonism of this dual orexin receptor antagonist. The structural data validate the rational design that incorporated a 1,
Masashi Mima, Chiemi Mishima-Tsumagari, Mayumi Sakata-Sakuta, Ryo Iwaoka, Kunihiko Iwamoto   +4 more
wiley   +1 more source

Ligand‐Based Pharmacophore Modeling and Structure‐Based Virtual Screening for Identifying Potential Therapeutic Agents Targeting the SARS‐CoV‐2 Spike Protein‐ACE2 Receptor Interaction

ChemMedChem, Volume 21, Issue 10, 27 May 2026.
A protocol guided by ligand‐based pharmacophore modeling and structure‐based virtual screening enabled the identification of 1H‐pyrazol‐5‐ol derivatives as novel inhibitors of the SARS‐CoV‐2 spike protein. The lead inhibitors, C‐3 and C‐4, could serve as templates for the design of potent antiviral agents targeting viral entry into host cells ...
Timoteo Delgado‐Maldonado, Gilberto Vargas‐Salas, Debasish Bandyopadhyay, Adriana Moreno‐Rodríguez, Eyra Ortiz‐Pérez, Gildardo Rivera   +5 more
wiley   +1 more source

Study of the reactivity of alpha-acylenaminoketones. Synthesis of pyrazoles

, 2015
The reactions of 4-(methylamino)-3-penten-2-one with diazoketones yielded the alpha -acylenaminoketones 1-3 in good yields. Preparation of the alpha -acylenaminoketone 4 was carried out by treatment of 4-(t-butylamino)-3-penten-2-one with benzoyl ...
Kascheres, C, Negri, G
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