From rigid cyclic templates to conformationally stabilized acyclic scaffolds. Part I: The discovery of CCR3 antagonist development candidate BMS-639623 with picomolar inhibition potency against eosinophil chemotaxis
作者:Joseph B. Santella、Daniel S. Gardner、Wenqing Yao、Chongsheng Shi、Prabhakar Reddy、Andrew J. Tebben、George V. DeLucca、Dean A. Wacker、Paul S. Watson、Patricia K. Welch、Eric A. Wadman、Paul Davies、Kimberly A. Solomon、Dani M. Graden、Swamy Yeleswaram、Sandhya Mandlekar、Ilona Kariv、Carl P. Decicco、Soo S. Ko、Percy H. Carter、John V. Duncia
DOI:10.1016/j.bmcl.2007.11.067
日期:2008.1
Conformational analysis of trans-1,2-disubstituted cyclohexane CCR3 antagonist 2 revealed that the cyclohexane linker could be replaced by an acyclic syn-alpha-methyl-beta-hydroxypropyl linker. Synthesis and biological evaluation of mono- and disubstituted propyl linkers support this conformational correlation. It was also found that the alpha-methyl group to the urea lowered protein binding and that
反式1,2-二取代的环己烷CCR3拮抗剂2的构象分析表明,环己烷接头可被无环的顺式α-甲基-β-羟丙基接头取代。单取代和双取代丙基连接基的合成和生物学评估支持这种构象相关性。还发现与尿素的α-甲基降低了蛋白结合,而β-羟基降低了对CYP2D6的亲和力。从头算计算表明,α-甲基基团控制着分子内三个关键功能的空间取向。具有嗜酸性粒细胞趋化性IC(50)= 38 pM的α-甲基-β-羟丙基尿素31被选择进入临床治疗哮喘的研究。