线粒体通透性过渡孔(MPTP)的打开会导致急性胰腺炎(AP)中的线粒体功能障碍和坏死,这种情况没有经过专门的药物治疗。亲环蛋白D(CypD)是一种线粒体基质肽基-脯氨酰异构酶,可调节MPTP,并且是AP的药物靶标。我们已经合成了基于尿素的亲环蛋白小分子抑制剂,并使用结合和异构酶活性测定法针对CypD进行了测试。CypD /抑制剂相互作用的热力学曲线通过等温滴定量热法测定。获得了七个新的CypD-抑制剂复合物高分辨率晶体结构,以指导化合物的优化。化合物4,13,14,和19在新鲜分离的鼠胰腺腺泡细胞(PACS)进行测试,以确定细胞线粒体膜电位的毒素引起的损耗(ΔΨ的抑制米)和坏死性细胞死亡途径的激活。化合物19被发现具有A K d为410nm和有利的热力学轮廓,它显示的ΔΨ显著保护米和减少鼠的坏死以及人的PAC。化合物19对于未来的潜在客户优化具有重大前景。
[EN] COMPOUNDS FOR THE INHIBITION OF CYCLOPHILINS AND USES THEREOF<br/>[FR] COMPOSÉS INHIBITEURS DE CYCLOPHILINES ET LEURS UTILISATIONS
申请人:MERCK PATENT GMBH
公开号:WO2017173048A1
公开(公告)日:2017-10-05
The present invention relates to compounds, and pharmaceutically acceptable compositions thereof, useful as inhibitors of cyclophilins, and for the treatment of cyclophilin- related disorders.
Enantioselective Imine Reduction Catalyzed by Phosphenium Ions
作者:Travis Lundrigan、Erin N. Welsh、Toren Hynes、Chieh-Hung Tien、Matt R. Adams、Kayelani R. Roy、Katherine N. Robertson、Alexander W. H. Speed
DOI:10.1021/jacs.9b07293
日期:2019.9.11
The first use of phosphenium cations in asymmetric catalysis is reported. A diazaphosphenium triflate, prepared in two or three steps on a multi-gram scale from commercially available materials catalyzes the hydroboration or hydrosilation of cyclic imines with enantiomeric ratios of up to 97:3. Catalyst loadings are as low as 0.2 mole percent. Twenty-two aryl/heteroaryl pyrrolidines and piperidines