Advances in the synthesis of polypeptides

CONTENTS
I. Introduction 329
II. Synthesis of polypeptides from α-amino-acids, peptides, and 2,5-dioxopiperazine derivatives 330
III. Synthesis of polypeptides from α-amino-acid derivatives with modified amino- or carboxy-groups 335
IV. Synthesis of polypeptides by the polymerisation of the anhydrides of N-carboxy-α-amino-acids 342