Results 11 to 20 of about 1,937,826 (232)

On the Interactions of Fused Pyrazole Derivative with Selected Amino Acids: DFT Calculations [PDF]

open access: yesJournal of Chemistry, 2017
Due to the increasing prevalence of neoplasms, there is a permanent need for new selective cytostatic compounds. Anticancer drugs can act in different ways, affecting protein expression and synthesis, including disruption of signaling pathways within ...
Kornelia Czaja   +7 more
doaj   +2 more sources

The investigation of the reactions of some pyrazole-3-carboxylic acids with various diamines and diols

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2012
In this study, some new derivatives were synthesized of 4-benzoyl-1-(3-nitrophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid (1) and 4-(ethoxycarbonyl)-1-(3-nitrophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid (2) that they were pyrazole carboxylic acid ...
Rahmi Kasımoğulları   +2 more
doaj   +2 more sources

Experimental and Theoretical Studies on the Functionalization Reactions of 4-Benzoyl-1,5-Diphenyl-1H-Pyrazole-3-Carboxylic Acid and Acid Chloride with 2,3-Diaminopyridine

open access: yesMolecules, 2005
The 1H-pyrazole-3-carboxylic acid 2 was converted in good yield (69%) into the corresponding 1H-pyrazole-3-carboxamide 5 via reaction of the acid chloride 3 with 2,3- diaminopyridine (4).
Elif Demir   +2 more
doaj   +2 more sources

5-Amino-1-phenyl-1H-pyrazole-4-carboxylic acid [PDF]

open access: yes, 2008
5-Amino-1-phenyl-1H-pyrazole-4-carboxylic ...
Muhammad Zia-ur-Rehman (7162790)   +3 more
core   +5 more sources

2,2′-(1-Phenyl-1H-pyrazole-3,5-di­yl)diphenol [PDF]

open access: yes, 2009
The title compound, C21H16N2O2, was derived from 1-(2-hydroxyphenyl)-3-(-methoxyphenyl)propane-1,3-dione. The molecular structure of the title compound is stabilized by an intramolecular O-H...N hydrogen bond. The dihedral angle between the hydroxyphenyl
Bolte, Michael   +9 more
core   +1 more source

Facile synthesis, ex-vivo and in vitro screening of 3-sulfonamide derivative of 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxy lic acid piperidin-1-ylamide (SR141716) a potent CB1 receptor antagonist

open access: yes, 2008
Facile synthesis of biaryl pyrazole sulfonamide derivative of 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxy lic acid piperidin-1-ylamide (SR141716, 1) and an investigation of the effect of replacement of the -CO group in the ...
K. Sairam (23388697)   +11 more
core   +2 more sources

Synthesis of new pseudo‐C‐nucleosides containing pyrazole rings in their structure [PDF]

open access: yes, 2004
Synthetic approaches to new 4-(furanos-4-C-yl)-1H-pyrazole and 3-(furanos-4-C-yl)-1H-pyrazole derivatives are described, including its pyrazole-5-carboxylate derivative, which is a pyrazofurin analogue.
Figueiredo, J.A.   +3 more
core   +1 more source

¹⁵N Nuclear Magnetic Resonance Studies of the Liver Alcohol Dehydrogenase-NAD⁺-Pyrazole Complex [PDF]

open access: yes, 1983
The structures of the liver alcohol dehydrogenase (LADH)-NAD+-pyrazole and LADH-NAD+-4-ethylpyrazole complexes were investigated by 15N nuclear magnetic resonance (NMR) spectroscopy.
Becker, Nancy Newton
core   +1 more source

Crystal structure of (3,5-dichloro-2-hydroxyphenyl){1-[(naphthalen-1-yl)carbonyl]-1H-pyrazol-4-yl}methanone

open access: yesActa Crystallographica Section E, 2014
The title compound, C21H12Cl2N2O3, is a 1,4-diaroyl pyrazole derivative and has three aromatic rings. The dihedral angles between the naphthalene ring system and the pyrazole ring, the pyrazole and phenyl rings and the naphthalene ring system and the ...
Yoshinobu Ishikawa, Yuya Motohashi
doaj   +1 more source

Crystal structure of (3,5-dibromo-2-hydroxyphenyl){1-[(naphthalen-1-yl)carbonyl]-1H-pyrazol-4-yl}methanone

open access: yesActa Crystallographica Section E, 2014
In the title compound, C21H12Br2N2O3, a 1,4-diaroyl pyrazole derivative, the dihedral angles between the naphthalene ring system and the pyrazole ring, the pyrazole and benzene rings, and the naphthalene ring system and benzene ring are 50.0 (2), 51.1 (2)
Yoshinobu Ishikawa, Yuya Motohashi
doaj   +1 more source

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