- Synthesis of lathyrane diterpenoid nitrogen-containing heterocyclic derivatives and evaluation of their anti-inflammatory activities
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As our ongoing work on lathyrane diterpenoid derivatization, three series of lathyrane diterpenoid derivatives were designed and synthesized based combination principles, including pyrazole, thiazole and furoxan moieties. Biological evaluation indicated t
- Wang, Wang,Xiong, Liangliang,Li, Yutong,Song, Zhuorui,Sun, Dejuan,Li, Hua,Chen, Lixia
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- Synthesis and evaluation of antimicrobial and anticancer activities of 3-phenyl-1-phenylsulfonyl pyrazoles containing an aminoguanidine moiety
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A series of 3-phenyl-1-phenylsulfonyl pyrazoles containing an aminoguanidine moiety was designed, synthesized, and evaluated for their antimicrobial and anticancer activities. The majority of the target compounds showed broad-spectrum antimicrobial activi
- Huang, Yushan,Hu, Hongmei,Yan, Rui,Lin, Liwen,Song, Mingxia,Yao, Xiaodong
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- Synthesis and biological evaluation of some pyrazole derivatives, containing (Thio) semicarbazide, as dual anti-inflammatory antimicrobial agents
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Background: Several series of pyrazole derivatives containing (thio) semicarbazide (4a-4h, 5a-5l, 6a-6f, 7a-7c) were designed and synthesized to screen dual inflammatory and antimicrobial activities. Methods: The products were characterized by1
- Liang, Zhaochang,Huang, Yuping,Wang, Shiben,Deng, Xianqing
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p. 1020 - 1030
(2019/10/28)
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- Design, synthesis and biological activities of 2,3-dihydroquinazolin-4(1H)-one derivatives as TRPM2 inhibitors
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Transient receptor potential melastatin 2 (TRPM2), a Ca2+-permeable cationic channel, plays critical roles in insulin release, cytokine production, body temperature regulation and cell death as a reactive oxygen species (ROS) and temperature sensor. However, few TRPM2 inhibitors have been reported, especially TRP-subtype selective inhibitors, which hampers the investigation and validation of TRPM2 as a drug target. To discover novel TRPM2 inhibitors, 3D similarity-based virtual screening method was employed, by which 2,3-dihydroquinazolin-4(1H)-one derivative H1 was identified as a TRPM2 inhibitor. A series of novel 2,3-dihydroquinazolin-4(1H)-one derivatives were subsequently synthesized and characterized. Their inhibitory activities against the TRPM2 channel were evaluated by calcium imaging and electrophysiology approaches. Some of the compounds exhibited significant inhibitory activity, especially D9 which showed an IC50 of 3.7 μM against TRPM2 and did not affect the TRPM8 channel. The summarized structure-activity relationship (SAR) provides valuable insights for further development of specific TRPM2 targeted inhibitors.
- Zhang, Han,Liu, Huan,Luo, Xiao,Wang, Yuxi,Liu, Yuan,Jin, Hongwei,Liu, Zhenming,Yang, Wei,Yu, Peilin,Zhang, Liangren,Zhang, Lihe
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p. 235 - 252
(2018/05/09)
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- Synthesis and the interaction of 2-(1H-pyrazol-4-yl)-1H-imidazo[4,5-f][1,10]phenanthrolines with telomeric DNA as lung cancer inhibitors
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A novel series of 2-(1H-pyrazol-4-yl)-1H-imidazo[4,5-f][1,10]phenanthrolines were designed, synthesized and evaluated for their antitumor activity against lung adenocarcinoma by CCK-8 assay, electrophoretic mobility shift assay (EMSA), UV-melting study, wound healing assay and docking study. These compounds showed good inhibitory activities against lung adenocarcinoma. Especially compound 12c exhibited potential antiproliferative activity against A549?cell line with the half maximal inhibitory concentration (IC50) value of 1.48?μM, which was a more potent inhibitor than cisplatin (IC50?=?12.08?μM) and leading compound 2 (IC50?=?1.69?μM), and the maximum cell inhibitory rate being up to 98.40%. Moreover, further experiments demonstrated that compounds 12a–d can strongly interact with telomeric DNA to stabilize G-quadruplex DNA with increased ΔTm values from 12.44 to 20.54?°C at a ratio of DNA to compound 1:10. These results implied that growth inhibition of A549?cells mediated by these phenanthroline derivatives is possibly positively correlated to the fact their interaction with telomeric G-quadruplexs.
- Liu, Jiachun,Chen, Mei,Wang, Yanli,Zhao, Xiaoyin,Wang, Sijia,Wu, Yanling,Zhang, Wen
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- Synthesis and antitubercular and antibacterial activity of some active fluorine containing quinoline–pyrazole hybrid derivatives
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In an attempt to develop newer antitubercular and antibacterial agents against the increasing bacterial resistance, we have designed new quinoline–pyrazole analogs (8a–u) following the molecular hybridization approach. The structure of one of the final compounds, 8a was unambiguously confirmed by single crystal X-ray diffraction (SC-XRD) analysis. The target compounds were evaluated for their antitubercular activity against Mycobacterium tuberculosis and antibacterial activity against three common pathogenic bacterial strains. Four derivatives (8b, 8c, 8j and 8o) displayed significant antitubercular activity. The compounds derived from 8-trifluoromethylquinoline and 6-fluoroquinoline scaffolds with halogen substitution on the pyrazole ring exhibited superior inhibition activity than corresponding 6-methoxyquinoline analogs. The cytotoxic studies revealed that the active compounds are nontoxic to normal Vero cell lines with selectivity index values ≥10, which indicate the suitability of these compounds for further drug development. The in silico molecular docking study demonstrated strong binding affinity of the compounds with the target enzymes (InhA, CYP121 and TMPK) of M. tuberculosis. Further, the in vitro antibacterial activity of compounds 8b, 8c, 8d and 8g is comparable with that of the reference drug, Ciprofloxacin.
- Nayak, Nagabhushana,Ramprasad, Jurupula,Dalimba, Udayakumar
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- Synthesis and antimicrobial evaluation of (Z)-5-((3-phenyl-1H-pyrazol-4-yl)methylene)-2-thioxothiazolidin-4-one derivatives
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Background: An alarming increment in pathogenic resistance to existing anti-microbial agents is a serious problem and the treatment of these bacterial infections is becoming increasingly challenging. Therefore, there is an urgent need to develop novel ant
- Wei, Zhi-Yu,Liu, Jia-Chun,Zhang, Wen,Li, Ya-Ru,Li, Chao,Zheng, Chang-Ji,Piao, Hu-Ri
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p. 751 - 759
(2016/11/29)
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- New INH-pyrazole analogs: Design, synthesis and evaluation of antitubercular and antibacterial activity
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With the aim of developing promising antitubercular and antibacterial leads, we have designed and synthesized a new series of isonicotinohydrazide based pyrazole derivatives (5a-r). All new derivatives (4a-b and 5a-r) were screened for in vitro antimycoba
- Nayak, Nagabhushana,Ramprasad, Jurupula,Dalimba, Udayakumar
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p. 5540 - 5545
(2015/11/17)
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- Hantzsch reaction: Synthesis and characterization of some new 1,4-dihydropyridine derivatives as potent antimicrobial and antioxidant agents
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In the present study two new series of Hantzsch 1,4-dihydropyridine derivatives (1,4-DHPs) containing substituted pyrazole moiety (4a-f and 5a-f) were synthesized by the reaction of 3-aryl-1H-pyrazole-4-carbaldehydes with 1,3-dicarbonylcompounds (ethylace
- Vijesh,Isloor, Arun M.,Peethambar,Shivananda,Arulmoli,Isloor, Nishitha A.
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experimental part
p. 5591 - 5597
(2011/12/22)
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- Structure-activity relationship study of a novel necroptosis inhibitor, necrostatin-7
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Necroptosis is a regulated caspase-independent cell death mechanism characterized by morphological features resembling non-regulated necrosis. Necrotatin-7 (Nec-7), a novel potent small-molecule inhibitor of necroptosis, is structurally distinct from previously described necrostatins (Nec-1, Nec-3, Nec-4 and Nec-5). Here, we describe a series of structural modifications and the structure-activity relationship (SAR) of the Nec-7 series for inhibiting necroptosis.
- Zheng, Weihong,Degterev, Alexei,Hsu, Emily,Yuan, Junying,Yuan, Chengye
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scheme or table
p. 4932 - 4935
(2009/05/26)
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- Synthesis of 3-substituted arylpyrazole-4-carboxylic acids
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A method was suggested for preparing previously unknown 3-aryl-substituted pyrazole-4-carboxylic acids, involving Vilsmeier formylation of semicarbazones of 26 available mono- and disubstituted acetophenones and 2-acetylthiophene followed by oxidation of
- Lebedev,Lebedeva,Sheludyakov,Kovaleva,Ustinova,Kozhevnikov
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p. 782 - 789
(2007/10/03)
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