Dihydrochelerythrine and its derivatives: Synthesis and their application as potential G-quadruplex DNA stabilizing agents
作者:Rajesh Malhotra、Chhanda Rarhi、K.V. Diveshkumar、Rajib Barik、Ruhee D’cunha、Pranab Dhar、Mrinalkanti Kundu、Subrata Chattopadhyay、Subho Roy、Sourav Basu、P.I. Pradeepkumar、Saumen Hajra
DOI:10.1016/j.bmc.2016.04.059
日期:2016.7
quadruplex DNA structures and a comparison study with the parent natural alkaloid chelerythrine (CHL), 1 was performed. A thorough investigation was carried out to assess the quadruplex binding affinity by using various biophysical and biochemical studies and the binding mode was explained by using molecular modeling and dynamics studies. Results clearly indicate that DHCHL is a strong G-quadruplex stabilizer
设想了通过原位产生的芳基硼烷的2-溴-N-(2-溴苄基)-萘-1-胺衍生物5的分子内铃木偶联来合成二氢白屈菜红碱(DHCHL)4的便利途径。将该化合物转化为(±)-6-丙酮基二氢白屈菜红碱(ADC)3,然后通过手性制备型HPLC对其进行拆分。DHCHL稳定启动子四链DNA结构的效率以及与母体天然生物碱白屈菜红碱(CHL)的比较研究,1被执行了。通过使用各种生物物理和生化研究进行了彻底的研究以评估四链体结合亲和力,并且通过使用分子建模和动力学研究来解释了结合模式。结果清楚地表明DHCHL是一种强G-四链体稳定剂,其亲和力类似于亲本生物碱CHL的亲和力。还针对不同的人类癌细胞系筛选了化合物ADC和DHCHL。在癌细胞中,(±)-ADC及其对映异构体显示出对人结肠直肠细胞系HCT116和乳腺癌细胞系MDA-MB-231的不同抑制作用(15-48%),尽管对映体的抑制作用很低。而DHCHL 仅显示