Asymmetric synthesis of N-3 substituted phenoxypropyl piperidine benzimidazol-2-one derivatives, potent and selective NOP agonists
作者:John K. Clark、Philip S. Jones、Ronald Palin、Georgina Rosair、Mark Weston
DOI:10.1016/j.tet.2008.01.125
日期:2008.3
The asymmetric synthesis of the potent selective NOP agonist 2-(3-1-[3-(5-methoxy-2-methyl-phenoxy)-4-methyl-pentyl]-piperidin-4-yl}-2-oxo-2,3-dihydro-benzimidazol-1-yl)-N-methyl-acetamide and analogues was developed. The key step, chiral reduction of methyl isobutyryl acetate, was achieved using a mild Noyori-type asymmetric hydrogenation.
有效的选择性NOP激动剂2-(3- 1- [3-(5-甲氧基-2-甲基-苯氧基)-4-甲基-戊基]-哌啶-4-基} -2-氧-的不对称合成开发了2,3-二氢苯并咪唑-1-基)-N-甲基-乙酰胺和类似物。关键步骤是使用温和的Noyori型不对称氢化实现手性还原乙酸甲基异丁酯。