.beta.-turn peptidomimetic cyclic compounds

A - Human Necessities – 61 – K

Patent

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Details

A61K 31/395 (2006.01) A61K 31/00 (2006.01) A61K 31/33 (2006.01) A61K 31/38 (2006.01) A61K 38/12 (2006.01)

Patent

CA 2397670

Proteolytically stable small molecule .beta.-turn peptidomimetic compounds have been identified as agonists or antagonists of neurotrophin receptors, such as TrkA. A compound of particular interest binds the immunoglobulin-like C2 region of the extracellular domain of TrkA, competes the binding of another TrkA ligand, affords selective trophic protection to TrkA-expressing cell lines and neuronal primary cultures, and induces the differentiation of primary neuronal cultures. The small .beta.-turn peptidomimetic compounds of the invention can activate a tyrosine kinase neurotrophin receptor that normally binds a relatively large protein ligand. Such compounds that bind the extracellular domain of Trk receptors are useful pharmacological agents to address disorders where Trk receptors play a role, by targeting populations selectively.

Des composés peptidomimétiques du coude bêta à petites molécules protéolytiquement stables ont été identifiés comme agonistes ou antagonistes des récepteurs neurotrophiniques tels que TrkA. Un composé particulièrement intéressant se lie à la région C2 immunnoglobulinoïde du domaine extracellulaire de TrkA, fait concurrence à la liaison d'un autre ligand de TrkA, confère une protection trophique sélective aux lignées cellulaires exprimant le TrkA et aux cultures neuronales primaires, et induit la différenciation des cultures neuronales primaires. Les petits composés peptidomimétiques à coude bêta de l'invention peuvent activer un récepteur neurotrophinique de la tyrosine kinase se liant nirmalement à un ligand protidique relativement grand. De tels composés se liant au domaine extracellulaire des récepteurs Trk conviennent comme agents pharmacologiques permettant de s'adresses à des troubles où les récepteurs Trk jouent un rôle, par un ciblage sélectif des populations.

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