L-Cystathionine derivatives for the synthesis of peptides

Z Procházka, K Jošt

Index: Prochazka, Zdenko; Jost, Karel Collection of Czechoslovak Chemical Communications, 1980 , vol. 45, # 7 p. 1982 - 1990

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Abstract

Some time ago! we described certain cystathionine** derivatives suitable for the synthesis of the so-called carba analogs of biologically active peptides, ie of such ana- logs in which cystine is replaced by cystathionine. The synthesis of additional com- pounds of this type4 required that the series of derivatives lIb through lIe (ref. l ... The tert-butyloxycarbonyl derivative of cystathionine IIj was prepared by reduction of cystine by sodium in liquid ammonia and alkylativn of ...