Sequential C–H Arylation and Enantioselective Hydrogenation Enables Ideal Asymmetric Entry to the Indenopiperidine Core of an 11β-HSD-1 Inhibitor
作者:Xudong Wei、Bo Qu、Xingzhong Zeng、Jolaine Savoie、Keith R. Fandrick、Jean-Nicolas Desrosiers、Sergei Tcyrulnikov、Maurice A. Marsini、Frederic G. Buono、Zhibin Li、Bing-Shiou Yang、Wenjun Tang、Nizar Haddad、Osvaldo Gutierrez、Jun Wang、Heewon Lee、Shengli Ma、Scot Campbell、Jon C. Lorenz、Matthias Eckhardt、Frank Himmelsbach、Stefan Peters、Nitinchandra D. Patel、Zhulin Tan、Nathan K. Yee、Jinhua J. Song、Frank Roschangar、Marisa C. Kozlowski、Chris H. Senanayake
DOI:10.1021/jacs.6b09764
日期:2016.11.30
A concise asymmetric synthesis of an 11β-HSD-1 inhibitor has been achieved using inexpensive starting materials with excellent step-economy at low catalyst loadings. The catalytic enantioselectivetotalsynthesis of 1 was accomplished in 7 steps and 38% overall yield aided by the development of an innovative, sequential strategy involving Pd-catalyzed pyridinium C-H arylation and Ir-catalyzed asymmetric