Results 81 to 90 of about 64,444 (333)
Acta Chimica Slovenica, 2020 A series of new quaternary ammonium salts (QASs) containing a terpenoid moiety derived from perillyl alcohol, citronellol, and geraniol was synthesized.
Krzysztof Zelechowski +4 more
doaj +1 more source
THE ANTAGONISM OF ACETYLCHOLINE AND OF QUATERNARY AMMONIUM SALTS [PDF]
Quarterly Journal of Experimental Physiology, 1937 1. The study of a number of antagonists in a variety of tissues shows that all drugs which antagonise acetylcholine also antagonise Me4N.2. The concentration of antagonist needed in any tissue to produce an equal intensity of antagonism is similar with acetylcholine and with Me4N.3.
A. J. Clark, J. Raventós
openaire +1 more source
Advanced Science, EarlyView.Nanocellulose, derived from microcrystalline cellulose (MCC) through sulfuric acid hydrolysis or mechanical grinding to produce CNC or CNF, was tested in a rat ICP model. Particularly, CNF improved gut microbiota composition, reduced secondary bile acid metabolism, and restored bile acid homeostasis through modulation of the gut–liver axis.
Muhua Yu +18 more
wiley +1 more source
Optimization of the Selective Monohydrolysis of Diethyl 4-Aryl-4H-pyran-3,5-dicarboxylates
Molecules, 2011 A simple, efficient and eco-friendly procedure for the selective monohydrolysis of diethyl 2,6-dimethyl-4-aryl-4H-pyran-3,5-dicarboxylates under quaternary ammonium salt catalysis conditions is presented.
Hong Yan +3 more
doaj +1 more source
Quaternary Ammonium Salts as Alkylating Reagents in C−H Activation Chemistry
, 2017 A rhodium(I)-catalyzed alkylation reaction of benzylic amines via C(sp3)−H activation using quaternary ammonium salts as alkyl source is described. The reaction proceeds via in situ formation of an olefin via Hofmann elimination, which is the actual ...
Spettel, Manuel +2 more
core +1 more source
Advanced Science, EarlyView.A conserved genomic region between two streptavidin genes in Streptomyces packages biosynthetic gene clusters for diverse biotin‐pathway antibiotics: acidomycin, stravidin, the new non‐proteinogenic amino acid ANDA, and the new BioA inhibitor α‐methyl‐KAPA.
Sumire Kurosawa +8 more
wiley +1 more source
Microwave radiation in synthesis of quaternary ammonium salts
, 2020 U ovom radu opisane su prednosti mikrovalnog zračenja prilikom sinteze amonijevih kvaternih soli. Tehnika mikrovalnog zračenja pruža jednostavnost procesa, bolje iskorištenje, smanjeno reakcijsko vrijeme, ekološku i ekonomsku prihvatljivost. Uspoređeni
Dadić, Blanka
core
Structures, c.m.c. and α values of quaternary ammonium salts.
, 2015 Structures, c.m.c. and α values of quaternary ammonium salts.
Carlo Tascini (683583) +7 more
core +1 more source
Preparation, Characterization and Biocidal Efficiency of A Quaternary Ammonium Salt
International Journal of Advances in Chemistry, 2016 A quaternary ammonium salts (QAS) was synthesized from trialkylamine reacting with a halocarbon compound. This QAS was characterized by analytical methods of precipitation and spectroscopic determinations. QAScan damage marine life by killing one-celled plants to destroy their growth systems, and the prepared QAS therefore was used in biocidal ...
Shao Song Huang +7 more
openaire +2 more sources
Advanced Science, EarlyView.A snap‐top delivery nanosystem based on an azobenzene metal–organic framework achieves targeted release of 6‐mercaptopurine via acid‐stable frameworks and hypoxia/pH dual‐responsive β‐cyclodextrin gates. This multifunctional platform integrates three synergistic mechanisms: precision drug delivery to inflammatory sites, intrinsic antioxidant properties
Xin Li +6 more
wiley +1 more source