Asymmetric Synthesis of the Major Metabolite of a Calcitonin Gene-Related Peptide Receptor Antagonist and Mechanism of Epoxide Hydrogenolysis
作者:Guanglin Luo、Ling Chen、Charles M. Conway、Walter Kostich、Benjamin M. Johnson、Alicia Ng、John E. Macor、Gene M. Dubowchik
DOI:10.1021/acs.joc.7b00052
日期:2017.4.7
An asymmetric synthesis of the major metabolite of the calcitoningene-relatedpeptide recepotor antagonist BMS-846372 is presented. The variously substituted cyclohepta[b]pyridine ring system represents an underexplored ring system and showed some unexpected chemistry. Reactivities of epoxide and ketone functional groups on the cycloheptane ring were extensively controlled by a remote bulky TIPS group
提出了降钙素基因相关肽受体拮抗剂BMS-846372的主要代谢产物的不对称合成。各种取代的环庚[ b ]吡啶环体系表示未充分开发的环体系,并显示出某些意外的化学性质。环庚烷环上环氧基和酮官能团的反应性受远程庞大的TIPS基团的控制。两种非对映体环氧中间体之间氢解的速率差异为环氧化物氢解的机理提供了一些启示,而且,氘标记研究首次揭示了这一众所周知的化学转化的更多机理细节。