Abstract: Template-fixed ?-hairpin mimetics and libraries including a plurality of these mimetics are provided. The template-fixed ?-hairpin mimetics are of the following general formula: R1-Cys-Z-Cys-R2??(I) wherein the two cysteine residues are bridged by a disulfide bond, thereby forming a cyclic peptide; R1 and R2 are di- or tripeptide moieties of certain types, as defined herein; and Z is a chain of n amino acid residues with n being an integer from 4 to 20 and with each of these n amino acid residues being, independently, derived from any naturally occurring L-?-amino acid.

Abstract: Template-fixed ?-hairpin peptidomimetics of the general formula (I), wherein Z is a template-fixed chain of 12 ?-amino acid residues which, depending on their positions in the chain (counted starting from the N-terminal amino acid) are Gly or Pro, or of certain types, at least one of these residues being of the type of N-substituted glycines, which types, as the remaining symbols in the above formula, are defined in the description and the claims, and salts thereof, have the property to inhibit the growth of or to kill microorganisms. They can be used as disinfectants for foodstuffs, cosmetics, medicaments or other nutrient-containing materials or as medicaments to treat or prevent infections. These ?-hairpin peptidomimetics can be manufactured by processes which are based on a mixed solid- and solution phase synthetic strategy.

Abstract: Template-fixed ?-hairpin peptidomimetics of the General Formula (I); wherein Z1 and Z2 are template-fixed chains of 4 and 6 or 5 and 7 ?-amino acid residues and salts thereof. They have CXCR4-antagonizing properties and can be used as medicaments. These ?-sheet peptidomimetics can be manufactured by a process which is based on a mixed solid- and solution phase synthetic strategy.

Abstract: Template-fixed ?-hairpin peptidomimetics of the general formula (I) wherein Z is a template-fixed chain of 12, 14 or 18 ?-amino acid residues which, depending on their positions in the chain (counted starting from the N-terminal amino acid), are Gly, NMeGly, Pro or Pip, or of certain types which, as the remaining symbols in the above formula, are defined in the description and the claims, and salts thereof, have CXCR4 antagonizing properties. These ?-hairpin peptidomimetics can be manufactured by a process which is based on a mixed solid—and solution phase synthetic strategy.

Abstract: Template-fixed ?-hairpin peptidomimetics of the general formula (I) wherein Z is a template-fixed chain of 12 ?-amino acid residues which, depend on their positions in the chain (counted starting from the N-terminal amino acid) are Gly, or Pro, or of certain types which, as the remaining symbols in the above formula, are defined in the description and the claims, and salts thereof, have the property to selectively inhibit the growth of or to kill microorganisms such as Pseudomonas aeruginosa and Acinetobacter. They can be used as disinfectants for foodstuffs, cosmetics, medicaments or other nutrient-containing materials, or as medicaments to treat or prevent infections. In a specific embodiment, the template is based on the D-Pro-L-Pro dipeptides. These ?-hairpin peptidomimetics can be manufactured by processes which are based on a mixed solid—and solution phase synthetic strategy.

Abstract: The template-fixed B-hairpin peptidomimetics Cyclo(-Tyr-His-X-Cys-Ser-Ala-DPro-Dab-Arg-Tyr-Cys-Tyr-Gln-Lys-DPro-Pro), disulfide bond between Cys4 and Gys11, and pharmaceutically acceptable salts thereof, with X being Ala or Tyr, have CXCR4 antagonizing properties and can be used for preventing HIV infections in healthy individuals or for slowing and halting viral progression in infected patients; or where Cancer is mediated or resulting from CXCR4 receptor activity; or where immunological diseases are mediated or resulting from CXCR4 receptor activity; or for treating immuno suppression; or, in particular, for stem cell mobilisation of peripheral blood stem cells and/or mesenchymal stem cell (MSC) and/or other stem cells which retention depend on the CXCR4-receptor. These ?-hairpin peptidomimetics can be manufactured by a process which is based on a mixed solid- and Solution phase synthetic strategy, using methods which are well known to those adequately skilled in peptide chemistry.

Abstract: Template-fixed ?-hairpin peptidomimetics of the general formula (I), wherein Z is a template-fixed chain of 12 ?-amino acid residues which, depend on their positions in the chain (counted starting from the N-terminal amino acid) are Gly, or Pro, or of certain types which, as the remaining symbols in the above formula, are defined in the description and the claims, and salts thereof, have the property to selectively inhibit the growth of or to kill microorganisms such as Pseudomonas aeruginosa and Acinetobacter. They can be used as disinfectants for foodstuff, cosmetics, medicaments or other nutrient-containing materials, or as medicaments or treat or prevent infections. In a specific embodiment, the template is based on the D-Pro-L-Pro dipeptide. These ?-hairpin peptidomimetics can be manufactured by processes which are based on a mixed solid- and solution phase synthetic strategy.

Abstract: Template-fixed ?-hairpin mime tics of the general formula R1-Cys-Z-Cys-R2 (1) wherein the two Cys residues are bridged by a disulfide bond thereby forming a cyclic peptide; R1 and R2 are preferably Glu-Thr and Thr-Lys; or Lys-Thr and Thr-Glu; or Thr-Glu and Lys-Thr, or Thr-Lys and Glu-Thr; or Leu-Glu and Lys-Val; or Val-Lys and Glu-Leu; or Glu-Leu and Val-Lys; or Lys-Leu and Val-Glu; or Asn-Gly and Lys-Val; or Val-Gly and Lys-Asn; or Gly-Asn and Val-Lys; or Gly-Val and Asn-Lys; or Gly-Gly and Gly-Gly; or Glu-Leu-Lys and Glu-Val-Lys; or Lys-Val-Glu and Lys-Leu-Glu; or Leu-Glu-Lys and Glu-Lys-Val; or Val-Lys-Glu and Lys-Glu-Leu; or Glu-Lys-Leu and Val-Glu-Lys; or Lys-Glu-Val and Leu-Lys-Glu; or Lys-Glu-Leu and Val-Lys-Glu; or Glu-Lys-Val and Leu-Glu-Lys; or Lys-Val-Gly and Gly-Leu-Glu; or Glu-Leu-Gly and Gly-Val-Lys; or Val-Lys-Gly and Gly-Glu-Leu; or Leu-Glu-Gly and Gly-Lys-Val; or Val-Gly-Lys and Glu-Gly-Leu; or Leu-Gly-Glu and Lys-Gly-Val; or Gly-Gly-Gly and Gly-Gly-Gly; and Z is a chain of n amino acid resi

Abstract: Template-fixed ?-hairpin peptidomimetics of the general formulae (I) and (II) wherein Z, Z1 and Z2 are template-fixed chains of 8 to 16 ?-amino acid residues which, depending on their positions in the chain (counted starting from the N-terminal amino acid) are Gly, or Pro, or of certain types which, as the remaining symbols in the above formulae, are defined in the description and the claims, and salts thereof, have the property to inhibit the growth of or to kill microorganisms and cancer cells. They can be used as disinfectants for foodstuffs, cosmetics, medicaments or other nutrient-containing materials or as medicaments to treat or prevent infections or diseases related to such infections and/or cancer.

Abstract: Template-fixed &bgr;-hairpin peptidomimetics of the general formulae (I) and (II) wherein Z, Z1 and Z2 are template-fixed chains of 8 to 16 &agr;-amino acid residues which, depending on their positions in the chain (counted starting from the N-terminal amino acid) are Gly, or Pro, or of certain types which, as the remaining symbols in the above formulae, are defined in the description and the claims, and salts thereof, have the property to inhibit the growth of or to kill microorganisms and cancer cells. They can be used as disinfectants for foodstuffs, cosmetics, medicaments or other nutrient-containing materials or as medicaments to treat or prevent infections or diseases related to such infections and/or cancer. These &bgr;-hairpin peptidomimetics can be manufactured by a process which is based on a mixed solid- and solution phase synthetic strategy.