Design, stereoselective synthesis, and biological evaluation of novel tri-cyclic compounds as inhibitor of apoptosis proteins (IAP) antagonists
作者:Moriteru Asano、Kentaro Hashimoto、Bunnai Saito、Zenyu Shiokawa、Hiroyuki Sumi、Masato Yabuki、Mie Yoshimatsu、Kazunobu Aoyama、Teruki Hamada、Nao Morishita、Douglas R. Dougan、Clifford D. Mol、Sei Yoshida、Tomoyasu Ishikawa
DOI:10.1016/j.bmc.2013.07.020
日期:2013.9
We recently reported the discovery of octahydropyrrolo[1,2-a]pyrazine A as a lead compound for an inhibitor of apoptosis proteins (IAP) antagonist. To develop IAP antagonists with favorable PK profiles, we designed novel tri-cyclic compounds, octahydro-1H-cyclopropa[4,5]pyrrolo[1,2-a]pyrazines 1 and 2 based on co-crystal structural analysis of A with cellular IAP-1 (cIAP-1). The additional cyclopropane
我们最近报道了八氢吡咯并[1,2- a ]吡嗪A作为凋亡蛋白(IAP)拮抗剂抑制剂的先导化合物的发现。为了开发具有良好PK特性的IAP拮抗剂,我们基于A与A的共晶体结构分析,设计了新颖的三环化合物八氢-1 H-环丙烷[4,5]吡咯并[1,2- a ]吡嗪1和2。蜂窝IAP-1(cIAP-1)。额外的环丙烷部分用于封闭化合物A的预测代谢位点,而不会损害对cIAP的结合亲和力。化合物1和2经由中间体4a和5b '立体选择性地合成,所述中间体通过乙酯3a和甲硅烷基醚3b '的Simmons-Smith环丙烷化获得。化合物1和2显示在MDA-MB-231乳腺癌细胞强生长抑制和相比于提高的代谢稳定性甲。化合物2表现出显着的体内PD作用,以剂量依赖性方式增加肿瘤坏死因子-αmRNA。