Asymmetric synthesis of piperidines and octahydroindolizines using a one-pot ring-closure/N-debenzylation procedure
作者:Stephen G. Davies、Ai M. Fletcher、Deri G. Hughes、James A. Lee、Paul D. Price、Paul M. Roberts、Angela J. Russell、Andrew D. Smith、James E. Thomson、Oliver M.H. Williams
DOI:10.1016/j.tet.2011.09.038
日期:2011.12
The conjugate addition of an enantiopure lithium amide to a zeta-hydroxy-alpha,beta-unsaturated ester followed by a one-pot ring-closure/N-debenzylation protocol has been used in the asymmetric syntheses of (S)coniine and (R)-delta-coniceine (isolated as the corresponding hydrochloride salts), and (R,R)-1-(hydroxymethyl)octahydroindolizine (the bicyclic fragment of stellettamides A-C). (C) 2011 Elsevier Ltd. All rights reserved.