Acta Chem Scand

Preparation and properties of N'-di-tertbutoxycarbonyl amino acids. Applicability in the synthesis of Leu-enkephalin

K Gunnarsson, U Ragnarsson

Index: Gunnarsson, Kerstin; Ragnarsson, Ulf Acta Chemica Scandinavica, 1990 ,  vol. 44,  # 7  p. 944 - 951

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Citation Number: 34

Abstract

The synthesis of/Va-di-iert-butoxycarbonyl amino acids starting from the corresponding mono-derivatives via a three-step route is reported. The latter were converted into a suitable ester and then exhaustively r-butoxycarbonylated, after which the ester was selectively ...