Results 11 to 20 of about 16,085 (237)

Synthesis of a New Bioconjugate Steroid Pyridinium Salt Derived from Allopregnanolone Acetate [PDF]

open access: yesMolbank
Because allopregnanolone and derivatives represent biologically active molecules, in this letter, we present the synthesis of a new bioconjugate steroid pyridinium salt derived from allopregnanolone in three steps.
Hisami Rodríguez-Matsui   +5 more
doaj   +4 more sources

Synthesis and biological activity study of tanshinone I-pyridinium salt derivatives [PDF]

open access: yesNatural Products and Bioprospecting
Natural product tanshinone I exhibits weak potency and poor drug-like properties, which have restricted its clinical development as an anticancer agent.
Huimin Zhao   +9 more
doaj   +2 more sources

A Synthetic Route to Quaternary Pyridinium Salt-Functionalized Silsesquioxanes [PDF]

open access: yesInternational Journal of Polymer Science, 2012
A synthetic route to potentially biocidal silsesquioxanes functionalized by quaternary pyridinium functionalities has been developed. N-Alkylation reactions of the precursor compounds 4-(2-(trimethoxysilyl)ethyl)-pyridine (5) and 4-(2-trichloro ...
Nataliya Kostenko   +3 more
doaj   +3 more sources

Pyridinium tosylate [PDF]

open access: yesIUCrData
The title compound (systematic name: pyridinium 4-methylbenzenesulfonate), C5H6N+·C7H7O3S−, is the pyridinium salt of para-toluenesulfonic acid. In the crystal, classical N—H...O hydrogen bonds as well as C—H...O contacts connect the cationic and anionic
Eric Cyriel Hosten, Richard Betz
doaj   +2 more sources

4-[(Adamantan-1-yl)carbamoyl]pyridinium chloride [PDF]

open access: yesActa Crystallographica Section E, 2012
In the title salt, C16H21N2O+·Cl−, the amide group makes a dihedral angle of 24.98 (2)° with respect to the pyridinium ring.
Ying-Chun Wang
doaj   +2 more sources

Synthesis and crystal structure of a new pyridinium bromide salt: 4-methyl-1-(3-phenoxypropyl)pyridinium bromide [PDF]

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
In the cation of the title molecular salt, C15H18NO+·Br−, the pyridinium and phenyl rings are inclined to one another by 11.80 (8)°. In the crystal, the Br− anion is linked to the cation by a C—H...Br hydrogen bond.
Musa A. Said   +4 more
doaj   +3 more sources

Bis[2-(2,4-dinitrobenzyl)pyridinium] biphenyl-4,4′-disulfonate trihydrate [PDF]

open access: yesActa Crystallographica Section E, 2010
In the structure of the title salt, 2C12H10N3O4+·C12H8O6S22−·3H2O, determined at 173 K, the biphenyl-4,4′-disulfonate dianions lie across crystallographic inversion centres with the sulfonate groups ...
Graham Smith   +2 more
doaj   +2 more sources

Pyridinium 1,1′-Binaphthyl-2,2′-disulfonates as Highly Effective Chiral Brønsted Acid−Base Combined Salt Catalysts for Enantioselective Mannich-Type Reaction [PDF]

open access: yes, 2016
Pyridinium 1,1′-Binaphthyl-2,2′-disulfonates as Highly Effective Chiral Brønsted Acid−Base Combined Salt Catalysts for Enantioselective Mannich-Type ...
Manabu Hatano (1499794)   +4 more
core   +9 more sources

2-(1-Methoxycarbonyl-2-phenyleth-1-yl)-1-benzylpyridin-1-ium Bromide

open access: yesMolbank, 2023
In this work, we report the unexpected conversion of a pyridine derivative into the corresponding N-benzylated pyridinium salt due to the presence of unreacted benzyl bromide in the crude product. This transformation was observed at room temperature in a
Lorenzo Suigo   +2 more
doaj   +1 more source

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