- A new series of cytotoxic pyrazoline derivatives as potential anticancer agents that induce cell cycle arrest and apoptosis
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A new series of pyrazoline derivatives 1b–12b was designed, synthesized and evaluated for antiproliferative activity against three cancer cell lines (HepG-2, Hela and A549). Additionally, NIH/3T3 cell cytotoxicity were tested and the structure activity re
- Wang, Hong,Zheng, Jinhong,Xu, Weijie,Chen, Cheng,Wei, Duncan,Ni, Wenxiu,Pan, Ying
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- Design, synthesis, and SAR study of novel 4,5-dihydropyrazole-Thiazole derivatives with anti-inflammatory activities for the treatment of sepsis
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Systemic inflammatory response syndrome is a major feature of sepsis which is one of the major causes of death worldwide. It has been reported that 3,5-diaryl-4,5-dihydropyrazole and thiazole derivatives have many biological functions, especially in the aspect of anti-inflammation. According to the strategy of pharmacophore combination, we introduced thiazole moiety into dihydropyrazole skeleton to design and synthesize a novel series of 2-(3,5-diphenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-methylthiazole derivatives, and evaluated their anti-inflammatory activities for sepsis treatment. Preliminary structure?activity relationship (SAR) analysis was conducted by their inhibitory activities against nitric oxide (NO) release in LPS-induced RAW264.7 cells, and the optimal compound E26 exhibited more potent anti-inflammatory activity than the positive control treatment indomethacin and dexamethasone. In further mechanism study, our results showed that compound E26 significantly suppressed the production of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), NO and inhibited the expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2) through blocking MAPKs signaling pathway. In addition, in vivo administration of compound E26 resulted in a significant improvement of LPS-induced sepsis in C57BL/6J mice, with reducing toxicity in multiple organs. Taken together, this study demonstrated the compound E26 could be a promising agent for the treatment of sepsis.
- Cao, Peichang,Duan, Yajun,Fang, Mengyuan,Han, Jihong,Li, Qing-Shan,Xu, Huajian,Yang, Xiaoxiao,Zhang, Zhen,Zou, Tingfeng
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- Synthesis and theoretical study of a series of 3,5-disubstitutes pyrazoles
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In this work, we proposed the synthesis of a series of pyrazoles derivatives with different substituents on the aromatic rings. We aim to evaluate their influence on the reactivity of the compounds in reactions of α,β-unsaturated chalcones and sulfonyl hydrazide catalyzed by iodine. In order to explain their high and low yields, or the impossibility of obtaining some compounds by applied synthetic methodology, Density Functional Theory (DFT) calculations were performed. The reaction Gibbs free energy (ΔG) as well as the energy gap of the HOMO-LUMO frontier orbitals (ΔE) of some selected reactants could explain qualitatively the experimental observations in terms of synthesis yield. In this way, we believe that the chemical nature of aromatic ring substituents is relevant for the reactivity of the starting materials as well as the formation of the desired products.
- Branco, Ana Clara Alves,Couri, Mara Rubia Costa,Enes, Karine Braga,Guimar?es, Luciana,Lima, Maria Eduarda Toledo,Mateus, Marcella Fernandes Mano,Nascimento, Clebio Soares
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p. 932 - 938
(2020/12/23)
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- Synthesis and Anticancer Activity of 3-(Substituted Aroyl)-4-(3,4,5-trimethoxyphenyl)-1H-pyrrole Derivatives
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A series of 3-(substituted aroyl)-4-(3,4,5-trimethoxyphenyl)-1H-pyrrole derivatives were synthesized and determined for their anticancer activity against eleven cancer cell lines and two normal tissue cell lines using MTT assay. Among the synthesized comp
- Zhan, Xiao-Ping,Lan, Lan,Wang, Shuai,Zhao, Kai,Xin, Yu-Xuan,Qi, Qi,Wang, Yao-Lin,Mao, Zhen-Min
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- Synthesis and biological evaluation of substituted 4,6-diarylpyrimidines and 3,5-diphenyl-4,5-dihydro-1H-pyrazoles as anti-tubercular agents
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Various substituted 4,6-diarylpyrimidin-2-amine (4), 4,6-diaryl-2- (heteroaryl)pyrimidine (6) and 1-(3,5-diaryl-4,5-dihydro-1H-pyrazol-1-yl) ethanone (7) derivatives were synthesized in good yields using simple methodology. The synthesized compounds (4-7)
- Pathak, Vinay,Maurya, Hardesh K.,Sharma, Sandeep,Srivastava, Kishore K.,Gupta, Atul
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supporting information
p. 2892 - 2896
(2014/06/10)
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- Exploration of the SAR of anti-invasive chalcones: Synthesis and biological evaluation of conformationally restricted analogues
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In order to get a clearer view on the active geometry of anti-invasive chalcones, we have prepared a number of isoxazoles and related substances as conformationally restrained mimics of 1,3-diarylpropenones, and also of (Z)-stilbenes. In vitro anti-invasi
- Roman, Bart I.,Ryck, Tine De,Dierickx, Laura,Vanhoecke, Barbara W.A.,Katritzky, Alan R.,Bracke, Marc,Stevens, Christian V.
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experimental part
p. 4812 - 4819
(2012/09/08)
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- Synthesis and in vitro antitumor activity of new 4,5-dihydropyrazole derivatives
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A series of 3,5-diaryl-4,5-dihydropyrazole regioisomers, and their 1-acetylated derivatives, bearing a 3,4,5-trimethoxyphenyl moiety combined with a variety of substituted phenyl rings, was synthesized and evaluated for antitumor activity. Results of the in vitro assay against a non-small cell lung carcinoma cell line (NCI-H460) showed several compounds to be endowed with cytotoxicity in micromolar to sub-micromolar range, depending on substitution pattern and position of aryl rings on 4,5-dihydropyrazole core. Potent and selective activity was also observed in the NCI 60 human cancer cell line panel. 5-(3,4,5-Trimethoxyphenyl)pyrazolines 31 and 39 were found to possess potent antiproliferative activity against SR and MDA-MB-435, with GI50 inhibitory values in nanomolar range. Structure-activity relationships revealed that introduction of a (hydroxy)acetyl group at N-1 of inactive 5-(3,4,5-trimethoxyphenyl)pyrazolines, results in a clear in vitro activating effect. Compound 31 (IC50 = 5.16 μM) showed inhibition of tubulin polymerization comparable to that of CA-4 (IC50 = 4.92 μM).
- Congiu, Cenzo,Onnis, Valentina,Vesci, Loredana,Castorina, Massimo,Pisano, Claudio
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scheme or table
p. 6238 - 6248
(2010/10/03)
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- Studies on Cycloimmonium Ylids: Synthesis of Some New 2,4,6-Triarylsubstituted Pyridines via Pyridinium Ylids
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2,4,6-Triarylsubstituted pyridines (4a-r) have been synthesised by the reaction of pyridinium ylids (1a-c) with α,β-unsaturated ketones (2a-f) in the presence of ammonium acetate and acetic acid.These compounds (4a-r) have been characterised on the basis
- Singhal, R. K.,Mishra, Naresh K.
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p. 1079 - 1080
(2007/10/02)
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