Results 71 to 80 of about 3,572,666 (356)

Microwave-Assisted Synthesis of Unsymmetrical 5-Phenyl-1,3,4-oxadiazoles Containing Bis(carboxymethyl)amino Group

open access: yesApplied Sciences, 2023
New derivatives of 5-phenyl-1,3,4-oxadiazole substituted at position 2 with (bromomethyl)phenyl or bromoalkyl groups were obtained via microwave-assisted cyclodehydration of unsymmetrical N,N′-diacylhydrazines.
Marcin Łuczyński, Agnieszka Kudelko
doaj   +1 more source

Oxetanes: Recent Advances in Synthesis, Reactivity and Medicinal Chemistry [PDF]

open access: yes, 2016
The 4-membered oxetane ring has been increasingly exploited for its behaviors, i.e. influence on physicochemical properties as a stable motif in medicinal chemistry, and propensity to undergo ring opening reactions as a synthetic intermediate.
Bull, JA   +4 more
core   +1 more source

Oxidative Azo–Ene Cyclization

open access: yesOrganic Letters, 2016
An expedient procedure for catalytic oxidative azo-ene cyclization of allylic and homoallylic 1,2-hydrazinedicarboxylates is reported. The reaction produced a wide range of cyclic carbamate derivatives featuring an appended alkene fragment ready for further functionalization.
Nolwenn Derrien   +3 more
openaire   +4 more sources

Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
wiley   +1 more source

Engineering of Cyclodextrin Product Specificity and pH Optima of the Thermostable Cyclodextrin Glycosyltransferase from Thermoanaerobacterium thermosulfurigenes EM1 [PDF]

open access: yes, 1998
The product specificity and pH optimum of the thermostable cyclodextrin glycosyltransferase (CGTase) from Thermoanaerobacterium thermosulfurigenes EM1 was engineered using a combination of x-ray crystallography and site-directed mutagenesis.
Bauke W. Dijkstra   +44 more
core   +2 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

A reagent-free, sequence-dependent in situ peptide self-cyclization strategy under physiological condition

open access: yesEuropean Journal of Medicinal Chemistry Reports
Cyclic peptides are an important class of bioactive molecules used as drugs as well as biomolecular probes. Peptide cyclization under the physiological environment, without added chemicals or reagents, would be a highly useful technique for in situ ...
Nibedita Ghosh, Lal Mohan Kundu
doaj   +1 more source

Cationic Cyclization Involving a Remote Allene Function in the Trifluoroethanolysis of Hepta-5,6-dienyl Toluene-p-sulphonate [PDF]

open access: yes, 1973
The remote allene function participates efficiently in the trifluoroethanolysis of hepta-5,6-dienyl toluene-p-sulphonate, leading to the cyclized 2-methylenecyclohexyl ...
Bergman, Robert G.   +2 more
core  

A Generalized Theory of DNA Looping and Cyclization [PDF]

open access: yes, 2009
We have developed a generalized semi-analytic approach for efficiently computing cyclization and looping $J$ factors of DNA under arbitrary binding constraints. Many biological systems involving DNA-protein interactions impose precise boundary conditions
Meiners, Jens-Christian   +2 more
core   +2 more sources

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

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