Results 31 to 40 of about 4,108 (208)

Synthesis, Characterization and Biological Evaluation of New 3,5-Disubstituted-Pyrazoline Derivatives as Potential Anti-Mycobacterium tuberculosis H37Ra Compounds

open access: yesMolecules, 2021
A total of fourteen pyrazoline derivatives were synthesized through cyclo-condensation reactions by chalcone derivatives with different types of semicarbazide.
Kok Tong Wong   +5 more
doaj   +1 more source

Региоселективный синтез и свойства ацетильных производных фенолгликозидов [PDF]

open access: yes, 2008
Региоселективный синтез и свойства ацетильных производных фенолгликозидов. Работа посвящена выявлению реакционной способности при кислотном дезацетилировании с использованием HCl / EtOH в CHCl3, которая приводит к дезацетилированию на O-3, O-4 и O-6 ...
Auguste   +53 more
core   +2 more sources

Acetylcholinesterase inhibitory potencies of new pyrazoline derivatives [PDF]

open access: yesJournal of Research in Pharmacy, 2020
Alzheimer's disease (AD) has no current cure and its mechanism is not fully known, but treatments for symptoms are available. Acetylcholinesterase (AChE) has been reported to be an applicable therapeutic target in patient with AD. Acetylcholinesterase inhibitors (AChEIs) are commonly used for it.
Tuğrak Sakarya, Mehtap   +2 more
openaire   +4 more sources

1-[5-(3,5-Dimethoxyphenyl)-3-(2-methoxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl]ethanone

open access: yesIUCrData, 2021
In the title compound, C20H22N2O4, two benzene rings bearing methoxy substituents are connected by a central acetylpyrazoline ring: the dihedral angle between the benzene rings is 83.7 (1)°.
Miri Yoo, Dongsoo Koh
doaj   +1 more source

Asymmetric 1,3-dipolar cycloadditions of acrylamides [PDF]

open access: yes, 2009
This critical review, which is relevant to researchers in synthetic organic chemistry, focuses on asymmetric 1,3-dipolar cycloadditions with acrylamides.
Kissane, Marie, Maguire, Anita R.
core   +1 more source

Electrochemically enabled oxidative aromatization of pyrazolines

open access: yesOrganic & Biomolecular Chemistry, 2023
Electrochemical oxidation of pyrazolines mediated by ubiquitous sodium chloride readily enables access to a broad variety of pyrazoles in a sustainable manner.
Silja Hofmann   +4 more
openaire   +4 more sources

1,3-Dipolar cycloadditions of azomethine imines [PDF]

open access: yes, 2015
Azomethine imines are considered 1,3-dipoles of the aza-allyl type which are transient intermediates and should be generated in situ but can also be stable and isolable compounds.
Nájera, Carmen   +2 more
core   +3 more sources

Microwave-Assisted Synthesis of Some 3,5-Arylated 2-Pyrazolines

open access: yesMolecules, 2003
Condensation of 2-acetylnaphthalene with benzaldehydes under microwave irradiation affords chalcones which undergo facile and clean cyclizations with hydrazines RNHNH2 (R= H, Ph, Ac) to afford 3,5-arylated 2-pyrazolines in quantitative yields, also under
Hassan Ghasemnejad, Davood Azarifar
doaj   +1 more source

Microwave assisted synthesis of substituted 4-chloro-8-methyl-2-(1,3-diphenyl-1H-pyrazol-4-yl)-1,5-dioxa-2H-phenanthren-6-ones and their antimicrobial activity [PDF]

open access: yesJournal of the Serbian Chemical Society, 2017
Due to the potential antimicrobial activity of pyranochromenones and pyrazolines moieties, hybrid compounds containing both, substituted 4-Chloro-8-methyl-2-(1,3-diphenyl- -1H-pyrazol-4-yl)-1,5-dioxa-2H-phenanthren-6-ones (4a-g), have been ...
Ashok Dongamanti   +3 more
doaj   +1 more source

Crystal structure of 5-(4-methoxyphenyl)- 3-(4-methylphenyl)-4,5-dihydro-1Hpyrazole- 1-carbaldehyde [PDF]

open access: yes, 2015
In the title compound, C18H18N2O2, the pyrazole ring has a twisted conformation on the CH—CH2 bond. The tolyl ring and the 4-methoxyphenyl ring are inclined to the mean plane of the pyrazole ring by 4.40 (9) and 86.22 (9) , respectively, while the ...
Adam, Farook   +4 more
core   +2 more sources

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