Synthesis and evaluation as potential antitumor agents of novel ursolic acid derivatives
作者:Ming-Chuan Liu、Sheng-Jie Yang、Lin-Hong Jin、De-Yu Hu、Wei Xue、Song Yang
DOI:10.1007/s00044-016-1680-1
日期:2016.10
Novel ursolic acidderivatives were synthesized, and their structures were confirmed by MS, IR, 1H NMR and 13C NMR spectral analysis. In vitro antitumor activities of these compounds against MGC-803 (gastric cancer cell) and Bcap-37 (breast cancer cell) human cancer cell lines were evaluated by MTT assay. The pharmacological screening results revealed that many derivatives exhibited moderate to high
合成了新的熊果酸衍生物,并通过MS,IR,1 H NMR和13 C NMR光谱分析证实了其结构。通过MTT测定评估了这些化合物对MGC-803(胃癌细胞)和Bcap-37(乳腺癌细胞)人癌细胞系的体外抗肿瘤活性。药理学筛选结果表明,许多衍生物对受试细胞系均表现出中等至高活性,并且大多数药物显示出比熊果酸更强的抑制活性。代表性化合物3h的初步机理研究通过a啶橙/溴化乙锭染色,Hoechst 33258染色,末端脱氧核苷酸转移酶生物素-dUTP缺口末端标记试验以及流式细胞术进行了检测,结果表明化合物3h可以诱导MGC-803细胞凋亡,其凋亡率达到34.59。以10μM处理36小时后的%。
Discovery and radiosensitization research of ursolic acid derivatives as SENP1 inhibitors
作者:Huiqiang Wei、Jianghong Guo、Xiao Sun、Wenfeng Gou、Hongxin Ning、Zhennan Fang、Qiang Liu、Wenbin Hou、Yiliang Li
DOI:10.1016/j.ejmech.2021.113918
日期:2022.1
specific isopeptidase to catalyze deSUMOylation modification. Inhibiting SENP1 upregulates cancer cell radiosensitivity and it becomes a promising target for radiosensitization. Herein, based on the structure of ursolic acid (UA), a total of 53 pentacyclic triterpene derivatives were designed and synthesized as SENP1 inhibitors. Ten derivatives exhibited better SENP1 inhibitory activities than UA and the