A very simple and efficient stereoselective approach to cis-2,3-disubstituted piperidines via the reduction of N-acyliminium ion intermediates is described. Application of this methodology is exemplified by the enantioselective total synthesis of (+)-(2S,3S)-CP-99,994.
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| http://dx.doi.org/10.1021/jo302181k | DOI Listing |
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