Electrophilic Oxidation and [1,2]-Rearrangement of the Biindole Core of Birinapant
作者:Yijun Deng、Thomas Haimowitz、Matthew G. LaPorte、Susan R. Rippin、Matthew D. Alexander、Pavan Tirunahari Kumar、Mukta S. Hendi、Yu-Hua Lee、Stephen M. Condon
DOI:10.1021/acsmedchemlett.5b00461
日期:2016.3.10
evaluated in Phase 1/2 trials for the treatment of cancer and hepatitis B virus (HBV) infection. After one year at accelerated storage conditions, a formulation of 1 afforded four degradants in >0.1% abundance by HPLC analysis. The primary degradants (2 and 3) were formed via oxidation of the biindole core, while the secondary degradants (5 and 6) arose via [1,2]-rearrangement of 3 and 2, respectively
Birinapant / TL32711(1)是蛋白质凋亡抑制剂(IAP)家族的二价拮抗剂,设计用于模拟AVPI,AVPI是第二个线粒体衍生的胱天蛋白酶的激活剂(Smac / DIABLO)的N末端四肽。Birinapant用K i结合到cIAP1,cIAP2和XIAP的BIR3结构域分别为1、36和45 nM。Birinapant介导的cIAP1激活导致cIAP1自身泛素化和降解,并与TNF介导的NF-κB激活抑制,体外肿瘤细胞死亡诱导和体内肿瘤消退相关。Birinapant正在1/2期临床试验中进行评估,以治疗癌症和乙型肝炎病毒(HBV)感染。在加速储存条件下一年后,通过HPLC分析,配方1提供了四种降解物,其丰度> 0.1%。一级降解物(2和3)是通过双吲哚核的氧化而形成的,而二级降解物(5和6)是通过3和[1,2]的重排而产生的。2,分别。开发了强制降解条件,可以分离2和3(以克为