Results 11 to 20 of about 950 (182)

Pyrazoles and Pyrazolines as Anti-Inflammatory Agents

open access: yesMolecules, 2021
The five-membered heterocyclic group of pyrazoles/pyrazolines plays important role in drug discovery. Pyrazoles and pyrazolines present a wide range of biological activities.
Dimitra Hadjipavlou-Litina   +1 more
exaly   +3 more sources

The Role of Flow Chemistry on the Synthesis of Pyrazoles, Pyrazolines and Pyrazole-Fused Scaffolds [PDF]

open access: yesMolecules
Nitrogen-containing heterocycles are fundamental scaffolds in organic chemistry, particularly due to their prevalence in pharmaceuticals, agrochemicals and materials science.
Catarina M. Correia   +2 more
doaj   +2 more sources

Trifluoromethylated hydrazones and acylhydrazones as potent nitrogen-containing fluorinated building blocks [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2023
Nitrogen-containing organofluorine derivatives, which are prepared using fluorinated building blocks, are among the most important active fragments in various pharmaceutical and agrochemical products. This review focuses on the reactivity, synthesis, and
Zhang Dongxu
doaj   +2 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
exaly   +3 more sources

Virtual screening of anticancer activity of chalcones and pyrazolines as potential EGFR, VEGFR, and cytochrome P450 inhibitors [PDF]

open access: yesJournal of Pharmacy & Pharmacognosy Research, 2023
Context: Metastatic breast cancer is still categorized as an incurable disease because all available therapies are palliative treatments to relieve symptoms and increase life expectancy.
Hesti Lina Wiraswati   +9 more
doaj   +1 more source

Expeditious synthesis of 1,3,4-oxadiazole derivatives via sydnones [PDF]

open access: yesJournal of the Serbian Chemical Society, 2008
The clean cyclization of chalcones (1a–c/2a–c) with hydrazine hydrate under microwave irradiation afforded pyrazolines derivatised with sydnone (3d–i/4d–i), which underwent 1,3-dipolar cyclo-addition with acetic anhydride to form pyrazolines appended ...
D. G. BHADREGOWDA   +2 more
doaj   +3 more sources

PYRAZOLINES WITH ANTICONVULSANT AND MAO INHIBITORY ACTIVITIES [PDF]

open access: yesAl-Azhar Journal of Pharmaceutical Sciences, 2014
2-Pyrazolines (4,5-dihydro-1H-pyrazole) are an important class of five-membered heterocyclic compounds and were found to be vital building block in medicinal chemistry and led to the discovery of a number of bioactive derivatives.
Mohamed Aboul-Enein
doaj   +1 more source

2-Pyrazoline-5-One Derivative Suppresses Cell Proliferation and Induces Apoptosis With Upregulation of Bax in Breast Cancer Cells. [PDF]

open access: yesJ Biochem Mol Toxicol
2‐Pyrazoline‐5‐one derivative inhibits proliferation and migration and induces Bax‐mediated apoptosis in breast cancer cells. ABSTRACT The most common cancer in women worldwide is still breast cancer. Among its subtypes, luminal A and triple‐negative breast cancers present significant therapeutic challenges due to intrinsic drug resistance and absence ...
Sevinc SK   +3 more
europepmc   +2 more sources

Kallolide A acetate pyrazoline [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2011
IN THE CRYSTAL STRUCTURE OF KALLOLIDE A ACETATE PYRAZOLINE [SYSTEMATIC NAME: 7-methyl-16-oxo-4,10-bis-(prop-1-en-2-yl)-17,18-dioxa-14,15-diaza-tetra-cyclo-[9.4.2.1(6,9).0(1,12)]octa-deca-6,8,14-trien-5-yl acetate], C(23)H(28)N(2)O(5), there is a 12-member-ed carbon macrocyclic structure.
Idaliz Rodríguez-Escudero   +2 more
openaire   +3 more sources

Microwave assisted synthesis of some new coumarin-pyrazoline hybrids and their antimicrobial activity [PDF]

open access: yesJournal of the Serbian Chemical Society, 2015
A series of pyrazolines 4a-g have been synthesized by Michael addition of chalcones 3a-g with hydrazine hydrate in presence of sodium acetate under conventional heating and microwave irradiation.
Ashok Dongamanti   +3 more
doaj   +1 more source

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