Efficient asymmetric synthesis of important tryptophan analogs for biological research via the Schollkopf chiral auxiliary

An efficient method has been developed via the Schollkopf chiral auxiliary for the asymmetric synthesis of the important tryptophan analogs: L-isotryptophan, L-benzo[f]tryptophan and L-homotryptophan. (C) 2000 Elsevier Science Ltd. All rights reserved.