Ephedrine derived reusable chiral auxiliary for the synthesis of optically pure 3-hydroxy-4-aryl-β-lactams
作者:Bidhan A. Shinkre、Vedavati G. Puranik、B.M. Bhawal、A.R.A.S. Deshmukh
DOI:10.1016/s0957-4166(03)00039-9
日期:2003.2
The diastereoselective synthesis of carious beta-lactams has been achieved using a chit-at acid auxiliary derived from (-)-ephedrine. An efficient acid-catalyzed cleavage of the chiral auxiliary from these beta-lactams to afford 3-hydroxy-4-aryl-cis-beta-lactams. which are precursors for analogues Of the taxol side chain, is described. (C) 2003 Elsevier Science Ltd. All rights reserved.