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
Disclosed is a compound of formula I and salts thereof. Also disclosed are methods of making the compound of formula (I) and the use of the compound as an intermediate for making pharmaceutically active compounds such as 11- -hydroxysteroid hydrogenase type 1 (11- β-HSD1) inhibitors.