A novelseries of 5-membered heterocycle-containing phenylpropanoic acid derivatives was discovered as potent GPR120 agonists with low clearance, high oral bioavailability and in vivo antidiabetic activity in rodents.
A recyclable, convenient, and efficientcatalytic system for C-acylation of 1,3-dicarbonyl compounds and malononitrile with acid chlorides has been developed, giving moderate to excellent yields under mild conditions. This is the firstcatalytic example of such reactions. In addition, by applying this protocol as the key step, 3,5-disubstituted-1H-pyrazole-4-carboxylate can easily be synthesized in
Design, synthesis and cytotoxic activities of scopoletin-isoxazole and scopoletin-pyrazole hybrids
作者:Wei Shi、Jinglin Hu、Na Bao、Dongang Li、Li Chen、Jianbo Sun
DOI:10.1016/j.bmcl.2016.11.089
日期:2017.1
12 novel scopoletin-isoxazole and scopoletin-pyrazole hybrids were designed, synthesized and their chemical structures were confirmed by HR-MS, IR, 1H NMR and 13C NMR spectra. The anticancer activities of the newly synthesized compounds were evaluated in vitro against three human cancer cell lines including HCT-116, Hun7 and SW620 by MTT assay. The screening results showed that six compounds (9a, 9c
设计,合成了12种新颖的草素-异恶唑和草素-吡唑杂化物,并通过HR-MS,IR,1 H NMR和13 C NMR谱图确认了它们的化学结构。通过MTT分析,体外评估了新合成的化合物对三种人类癌细胞系包括HCT-116,Hun7和SW620的抗癌活性。筛选结果表明,六种化合物(9a,9c,9d,12a,18b和18d)显示出有效的细胞毒活性,IC 50为值低于20μM。此外,我们进一步评估了六种化合物对人类正常组织细胞系HFL-1的生长抑制活性。特别是,化合物9d对正常细胞HFL-1表现出显着的抗增殖活性,IC 50值在8.76μM至9.83μM范围内,细胞毒性较弱,IC 50值为90.9μM,这表明基于异恶唑的of草素杂种是有效的化学修饰以提高东碱的抗癌活性。
Discovery of 3-aryl-5-acylpiperazinyl-pyrazoles as antagonists to the NK3 receptor
作者:Hamid R. Hoveyda、Marie-Odile Roy、Sebastien Blanc、Sophie Noël、Joseph M. Salvino、Mark A. Ator、Graeme Fraser
DOI:10.1016/j.bmcl.2011.02.033
日期:2011.4
A series of 3-aryl-5-acylpiperazinyl-pyrazoles (e.g., 3a-b) initially identified through a high-throughput screening campaign using the aequorin Ca2+ bioluminescence assay as novel, potent small molecule antagonists of the G protein-coupled human tachykinin NK3 receptor (hNK3-R) is described. Preliminary profiling revealed poor plasma and metabolic stability for these structures in rodents. Further optimization efforts resulted in analogs with improved potency, stability, and pharmacokinetic properties as well as good brain permeability, for example, compounds 26 and 42. Unexpected cytotoxicity was observed in such N-Me pyrazole structures as compounds 41-42. (C) 2011 Elsevier Ltd. All rights reserved.
1112. Derivatives of 6-aminopenicillanic acid. Part VI. Penicillins from 3- and 5-phenylisoxazole-4-carboxylic acids and their alkyl and halogen derivatives
作者:F. P. Doyle、J. C. Hanson、A. A. W. Long、J. H. C. Nayler、E. R. Stove