New modification strategy of matrine as Hsp90 inhibitors based on its specific L conformation for cancer treatment
作者:Yiming Xu、Dewang Jing、Dong Zhao、Yongji Wu、Lu Xing、Haroon ur Rashid、Haodong Wang、Lisheng Wang、Huiling Cao
DOI:10.1016/j.bmc.2020.115305
日期:2020.2
The similarity of spatial structure between radicicol and matrine urged us to perform conformation modification of matrine, followed by L-shaped matrine derivatives, 6, 12, 21a-h and 22a-h were originally designed, synthesized and evaluated for Hsp90(N) inhibitors as anticancer agents. TSA (Thermal Shift Assay) results indicated that 21e, 22a-c and 22e-g exhibited strong binding force against Hsp90(N) with vertical bar Delta Tm vertical bar > 3, meanwhile, MTT assay also revealed these compounds displayed potent anticancer activity with IC50 values below 25 mu M against HepG2, HeLa and MDA-MB-231 cells lines. Then, compound 22g with a high Delta Tm = 10.92 was chosen as a representative to perform further mechanism study. It can induce cell apoptosis, arrest the cell cycle at the S phase and decrease the expression level of Hsp90 in Hela cell. These results originally provided targeted modification strategy for matrine derivatives to serve as Hsp90 inhibitors for cancer therapy.
Controllable and efficient oxidation of thioether by 2-iodoxybenzoic acid (IBX) in water: semisynthesis of sophocarpine
作者:Chaojie Li、Yuxiu Liu、Qingmin Wang
DOI:10.1016/j.tetlet.2013.12.060
日期:2014.1
A metal-free, environment friendly, easy-to-operate, and efficient method for the semisynthesis of sophocarpine from matrine has been developed in an overall yield of 91%. The route features a controllable and efficient oxidation of thioether to sulfoxide by 2-iodoxybenzoic acid (IBX) in water. (C) 2014 Published by Elsevier Ltd.