NATURAL AND UNUSUAL AMINO ACIDS BUILDING BLOCKS FOR MEDICINAL CHEMISTRY AND PEPTIDO MIMETICS! 1 Alanine, ß-Alanine and substituted Alanines 2 Linear Amino-Alkyl Carboxylic Acid 3 Cyclic Amino-Alkyl Carboxylic Acid 4 Aminobenzoic Acid Derivatives 5 Aminobutyric Acid Derivatives 6 Arginine and Homologues 7 Asparagine 8 Aspartic Acid 9 p-Benzoyl-Phenylalanine 10 Biphenylalanine 11 Citrulline 12 Cyclopropylalanine 13 Cyclopentylalanine 14 Cyclohexylalanine 15 Cysteine, Cystine and Derivatives 16 Diaminobutyric Acid Derivatives 17 Diaminopropionic Acid 18 Glutamic Acid Derivatives 19 Glutamine 20 Glycine 21 Substituted Glycines 22 Histidine 23 Homoserine 24 Indole Derivatives 25 Isoleucine 26 Leucine and Derivatives 27 Lysine 28 Methionine 29 Naphthylalanine 30 Norleucine 31 Norvaline 32 Ornithine 33 Phenylalanine 34 Ring-Substituted Phenylalanines 35 Phenylglycine 36 Pipecolic Acid, Nipecotic Acid and Isonipecotic Acid 37 Proline 38 Hydroxyproline 39 Thiazolidine 40 Pyridylalanine 41 Serine 42 Statine and Analogues 43 Threonine 44 Tetrahydronorharman-3-carboxylic Acid 45 1,2,3,4-Tetrahydroisoquinoline 46 Tryptophane 47 Tyrosine 48 Valine IRIS Biotech GmbH, Waldershofer Str. 49-51, D-95615 Marktredwitz, Germany