Results 21 to 30 of about 7,109 (211)

2-[(2,6-Dimethylmorpholin-4-yl)methyl]-4-[(E)-2-{3-[(E)-2-{3-[(2,6-dimethylmorpholin-4-yl)methyl]-4-hydroxy-5-methoxyphenyl}ethenyl]-1H-pyrazol-5-yl}ethenyl]-6-methoxyphenol

Molbank, 2017
A novel di-Mannich derivative of curcumin pyrazole, 2-[(2,6-dimethyl morpholin-4-yl)methyl]-4-[(E)-2-{3-[(E)-2-{3-[(2,6-dimethylmorpholin-4-yl)methyl]-4-hydroxy-5-methoxyphenyl}ethenyl]-1H-pyrazol-5-yl}ethenyl]-6-methoxyphenol (2), has been synthesized ...
Joko Untung, Iskandarsyah Iskandarsyah, Hayun Hayun   +2 more
doaj   +1 more source

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

Molecules, 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, Fatma Kandemirli, Ismail Yıldırım   +2 more
doaj   +1 more source

Curcumin–Triterpene Type Hybrid as Effective Sonosensitizers for Sonodynamic Therapy in Oral Squamous Cell Carcinoma

Pharmaceutics, 2023
Sonodynamic therapy (SDT) is a non-invasive therapeutic modality in cancer treatment that combines low-intensity ultrasound (US) and sonosensitizers. Tumor cells are destroyed through the synergistic effects of ultrasound and a chemical sonosensitizer ...
Katarzyna Sowa-Kasprzak, Małgorzata Józkowiak, Dorota Olender, Anna Pawełczyk, Hanna Piotrowska-Kempisty, Lucjusz Zaprutko   +5 more
doaj   +1 more source

Synthesis and Chemical Characterisation of Some New Diheteroaryl Thienothiophene Derivatives

Molecules, 2011
Treatment of 1-(5-acetyl-3,4-dimethythieno[2,3-b]thiophene-2yl)ethanone (1) with dimethylformamide dimethyl acetal afforded enaminone derivative 2, which reacted with amino derivatives to give the corresponding bis-pyrimidine, bis-pyrazole, bis-triazolo ...
Abdullah S. Alamary, Abdullah Mohammad Al-Majid, Yahia Nasser Mabkhot   +2 more
doaj   +1 more source

Characterization of Stable Pyrazole Derivatives of Curcumin with Improved Cytotoxicity on Osteosarcoma Cell Lines

Life, 2023
Curcumin (CUR) is a natural molecule that is unstable due to the presence of a bis-ketone. To obtain more stable derivatives in biological fluids, the bis-ketone was replaced with pyrazole or O-substituted oximes.
Giordana Feriotto, Riccardo Rondanin, Paolo Marchetti, Federico Tagliati, Simone Beninati, Claudio Tabolacci, Elisa Grusi, Serena Aguzzi, Carlo Mischiati   +8 more
doaj   +1 more source

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

Sakarya 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, Makbule Maden, Samet Mert   +2 more
doaj   +1 more source

3,5-Dimethyl-1-(4-nitrophenyl)-1H-pyrazole

Acta Crystallographica Section E, 2012
In the title pyrazole derivative, C11H11N3O2, the benzene ring is twisted [dihedral angle = 31.38 (12)°] with respect to the pyrazole ring (r.m.s. deviation = 0.009 Å).
Edward R. T. Tiekink, Solange M. S. V. Wardell, James L. Wardell   +2 more
doaj   +1 more source

Using the Photostationary State of Arylazopyrazoles to Control Phase Transitions of Liquid Crystals

Advanced Functional Materials, EarlyView.
A series of new arylazopyrazole photoswitches is designed as dopants for liquid crystalline materials. Unprecedented, the distribution of photoisomers at the photostationary state upon irradiation with light of specific wavelengths (365, 460, 520 nm) is used to control the liquid crystalline phase transitions under isothermal conditions, including ...
Tobias Thiele, Kristina Hrybenko, Christoph Wölper, Michael Giese   +3 more
wiley   +1 more source

Efficient Regioselective Iodination of Pyrazole Derivatives Mediated by Cadmium(II) Acetate

ChemistryOpen
The present study focuses on the iodination of pyrazoles mediated by cadmium (II) acetate. The objects of research were compounds with pyrazole rings substituted by N‐propargyl, C, N‐alkyl groups.
Dr. Nina G. Hobosyan, Dr. Kristine V. Balyan, Lusine A. Movsisyan, Dr. Varduhi S. Hovsepyan, Armen G. Ayvazyan, Dr. Henrik A. Panosyan, Prof. Dr. Hovhannes S. Attaryan, Dr. Hmayak B. Sargsyan, Haykanush R. Pogosyan   +8 more
doaj   +1 more source

Tin‐Oxo Nanocluster Extreme UV Photoresists Equipped with Chemical Features for Atmospheric Stability and High EUV Sensitivity

Advanced Functional Materials, EarlyView.
Fluoroalkyl‐functionalized tin–oxo nanoclusters (N‐TOC6) enable robust pattern formation through ligand crosslinking under EUV exposure without thermal processing. Sn–F coordination mitigates the Lewis acidity of Sn centers, suppressing reactions with airborne molecules and improving post‐exposure pattern stability.
Yejin Ku, Gayoung Kim, Minseung Kim, Hyungju Ahn, Jin‐Kyun Lee, Jiho Kim, Byeong‐Gyu Park, Dohyun Moon, Sangsul Lee, Seohyeon Lee, Yu Ha Jang, Byung Jun Jung, Hyunseok Kim, Changhyeon Lee, Su‐Mi Hur, Ji Young Park, Chawon Koh, Tsunehiro Nishi, Hyun‐Woo Kim   +18 more
wiley   +1 more source