| 摘要 |
The invention provides novel .beta.-peptides comprising 2 or more different .beta.-amino acid residues, preferably compounds of formula (I) wherein the R residues, X and n are as defined. Compounds of the invention having as few as 5 or 6 .beta.-amino acid residues exhibit stable structures in solution and the compounds generally exhibit good resistance to proteolytic degradation. The compounds of the invention provide a valuable new source of structural diversity for synthesis of biologically active compounds, e.g. for pharmaceutical uses.
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