Synthesis and antitumor activity of emodin quaternary ammonium salt derivatives
摘要:
A series of new emodin derivatives modified at the C-3 and the C-6 positions were synthesized, and evaluated for their anticancer activities in vitro and in vivo. Among them, Compounds 5g and 5h had more significant antiproliferative ability against HepG2, BGC-823, AGS cancer cell lines and low cytotoxicity to HELF normal cell line, respectively. Compounds 5g and 5h induced AGS cell cycle arrest at G0/G1 phase and induce apoptosis via activation of caspase-3 and caspase-9 enzyme. In vivo studies using H22 xenografts in Kunming mice were conducted with 5g and 5h. The results revealed that the medium dosage group (10 mg/kg) of 5g and the high dosage group (25 mg/kg) of 5h showed significant antitumor activity compared to the control group. (C) 2012 Elsevier Masson SAS. All rights reserved.
Synthesis and antitumor activity of emodin quaternary ammonium salt derivatives
作者:Jingwei Shao、Fengsen Zhang、Zedong Bai、Conghui Wang、Yaofeng Yuan、Wenfeng Wang
DOI:10.1016/j.ejmech.2012.07.047
日期:2012.10
A series of new emodin derivatives modified at the C-3 and the C-6 positions were synthesized, and evaluated for their anticancer activities in vitro and in vivo. Among them, Compounds 5g and 5h had more significant antiproliferative ability against HepG2, BGC-823, AGS cancer cell lines and low cytotoxicity to HELF normal cell line, respectively. Compounds 5g and 5h induced AGS cell cycle arrest at G0/G1 phase and induce apoptosis via activation of caspase-3 and caspase-9 enzyme. In vivo studies using H22 xenografts in Kunming mice were conducted with 5g and 5h. The results revealed that the medium dosage group (10 mg/kg) of 5g and the high dosage group (25 mg/kg) of 5h showed significant antitumor activity compared to the control group. (C) 2012 Elsevier Masson SAS. All rights reserved.
Synthesis and anti‐inflammatory effects of novel emodin derivatives bearing azole moieties
作者:Xiaokang Zhu、Qifang Chen、Yujin Yang、Xixi Ai、Si Chen、Yang Song
DOI:10.1002/ardp.201900264
日期:2020.2
interleukin‐1β and tumor necrosis factor‐α in the LPS‐stimulatedRAW264.7macrophages. Compound 7e exerted inhibitory effects on the nuclear factor κB pathway by reducing the LPS‐induced phosphorylation of the inhibitor of NF‐κB and the nuclear translation of p‐p65. These results suggest the potential of compound 7e in improving inflammatory conditions and diseases.
大黄素的 12 种唑类衍生物被设计为具有抗炎活性,并通过由威廉姆森醚反应和 N-烷基化组成的两步序列合成。通过测量脂多糖 (LPS) 诱导的一氧化氮 (NO) 产生,在 RAW264.7 细胞中评估了这些化合物的抗炎特性。将咪唑和四个碳原子引入大黄素支架导致发现了强效化合物 7e,其在 12 种类似物中表现出对 NO 产生的最佳抑制。在我们的实验环境中,化合物 7e 在 NO 生产中的 IC50 为 1.35 µM,低于吲哚美辛。从机制上讲,化合物 7e 有效抑制环加氧酶 2 和诱导型 NO 合酶的蛋白质和信使 RNA 表达,以及 LPS 刺激的 RAW 264.7 巨噬细胞中的促炎细胞因子白细胞介素-6、细胞因子白细胞介素-1β 和肿瘤坏死因子-α。化合物 7e 通过减少 LPS 诱导的 NF-κB 抑制剂磷酸化和 p-p65 的核翻译,对核因子 κB 通路发挥抑制作用。这些结果表明化合物