A facile and efficient reaction of α,β-unsaturated ketones and 3-amino-1-phenyl-1H-pyrazol-5(4H)-one in aqueous and acetonitrile medium
作者:Shuangshuang Xu、Zhansheng Wang、Xiuling Li、Liangce Rong、Shu-Jiang Tu
DOI:10.1016/j.tet.2016.07.073
日期:2016.9
A facile and efficient synthesis of pyrazolo[3,4-b]pyridines, indeno[1,2-b]pyrazolo[4,3-e]pyridine and benzo[h]pyrazolo[3,4-b]quinoline derivatives from the reaction of α,β-unsaturated ketone and 3-amino-1-phenyl-1H-pyrazol-5(4H)-one under mild conditions was reported. This reaction could be operated in aqueous and acetonitrile medium. The other advantages of this reaction were simple operation, mild
一种高效合成吡唑并[3,4- b ]吡啶,茚并[1,2- b ]吡唑并[4,3- e ]吡啶和苯并[ h ]吡唑并[3,4- b ]喹啉衍生物。报道了α,β-不饱和酮与3-氨基-1-苯基-1 H-吡唑-5(4 H)-one在温和条件下的反应。该反应可以在含水和乙腈介质中进行。该反应的其他优点是操作简单,反应条件温和,产率高和底物范围广。此外,3-amino-1-phenyl-1 H -pyrazol-5(4 H-一是用于合成这些杂环化合物的有效试剂。从实验事实来看,他的催化剂p -TSA·H 2 O和水都在该合成中起关键作用。
4,5-Dihydropyrazole derivatives containing oxygen-bearing heterocycles as potential telomerase inhibitors with anticancer activity
作者:Yin Luo、Yang Zhou、Jie Fu、Hai-Liang Zhu
DOI:10.1039/c4ra02200a
日期:——
Telomere and telomerase were closely related to the occurrence and development of some cancers. After the key active site of telomerase was identified, to enhance the ability of dihydropyrazole derivatives to inhibit telomerase, we designed a series of novel 4,5-dihydropyrazole derivatives containing heterocyclic oxygen moiety based on previous studies. The telomerase inhibition assay showed that compound 10a displayed the most potent inhibitory activity with an IC50 value of 0.6 μM for telomerase. The antiproliferative assay showed that 10a exhibited high activity against human gastric cancer cell SGC-7901 with an IC50 value of 10.95 ± 0.60 μM. Flow cytometric analysis and western blot results showed that 10a induced both apoptosis and autophagy. A docking simulation showed that 10a could bind well to the active site of telomerase and act as a telomerase inhibitor. The 3D-QSAR model was also built to provide a more pharmacological understanding that could be used to design new agents with more potent telomerase inhibitory activity.
activator and autophagyinhibitor. Compound 5e inhibited growth, promoted autophagy of A549 cells in vivo. Moreover, compound 5e showed good selectivity with no influence on normal vascular endothelial cell growth and the normal chick embryo chorioallantoic membrane (CAM) capillary formation. Therefore, our research provides potential lead compounds for the development of new anticancer drugs against human
合成了一系列荧光噻唑-吡唑啉衍生物,并通过1 H NMR,13 C NMR和HRMS对其结构进行了表征。生物学评估表明,这些化合物可以在体外以剂量和时间依赖性方式有效抑制人非小细胞肺癌(NSCLC)A549细胞的生长,并在体内抑制肿瘤的生长。分析了化合物的构效关系(SAR)。进一步的机制研究表明,它们可以诱导自噬和细胞周期停滞,而对细胞坏死没有影响。化合物5e通过FKBP12抑制了mTOR的活性,这可以被mTOR激活剂和自噬抑制剂3BDO逆转。化合物5e在体内抑制生长,促进A549细胞自噬。此外,化合物5e具有良好的选择性,对正常的血管内皮细胞生长和正常的鸡胚绒膜尿囊膜(CAM)毛细管形成没有影响。因此,我们的研究为开发新型抗人肺癌抗癌药物提供了潜在的先导化合物。
Synthesis of 1-Substituted 3-Aryl-5-aryl(hetaryl)-2-pyrazolines and Study of Their Antitumor Activity
Three series of novel 1,3,5‐trisubstituted 2‐pyrazoline derivatives containing thiophene and benzodioxol moieties as potential antitumor agents were synthesized. The in vitro antitumor activity of the obtained compounds was determined at the National Cancer Institute (NCI). The 5‐(benzo[d][1,3]dioxol‐5‐yl)‐3‐(4‐methoxyphenyl)‐4,5‐dihydro‐1H‐pyrazole‐1‐carbothioamide (9a) is the most prominent of the
Copper-catalyzed synthesis of 1,3,5-triarylpentane-1,5-diones from α,β-unsaturated ketones
作者:Zheng Li、Gong Wen、Lili He、Jiasheng Li、Xianggui Jia、Jingya Yang
DOI:10.1039/c5ra09155a
日期:——
An efficient method for copper catalyzed synthesis of 1,3,5-triarylpentane-1,5-diones using α,β-unsaturated ketones as a unique starting material is described.