Scale-Up of an Enantioselective Overman Rearrangement for an Asymmetric Synthesis of a Glycine Transporter 1 Inhibitor
作者:Sithamalli V. Chandramouli、Timothy A. Ayers、Xiao-Dong Wu、Loc T. Tran、James H. Peers、Rocco Disanto、Frederick Roberts、Narendra Kumar、Ying Jiang、Nakyen Choy、Clive Pemberton、Matthew R. Powers、Anthony J. Gardetto、Geoffrey A. D’Netto、Xuemin Chen、Juan Gamboa、Duc Ngo、Warren Copeland、Duane E. Rudisill、Andrew W. Bridge、Benoit J. Vanasse、David J. Lythgoe
DOI:10.1021/op200378r
日期:2012.3.16
An enantioselective Overman 3,3-sigmatropic rearrangement on a quinuclidine skeleton was developed for the pilot-plant synthesis of a glycine transporter 1 inhibitor. The first stereocenter was produced by a Ru-catalyzed asymmetric transfer hydrogenation process followed by chirality transfer using the Overman rearrangement. The second stereocenter was generated by a diastereoselective hydrogenation