Abstract: One aspect of the present invention relates to novel peptidomometic compounds. A second aspect of the present invention relates to the use of the novel peptidomimetic compounds as ligands—agonists or antagonists—for various cellular receptors, e.g., G-protein-coupled receptors and opioid receptors, and various cellular ion channels, e.g., sodium and calcium. In certain embodiments, compounds of the present invention preferentially or selectively inhibit sodium or calcium ion channels. In certain embodiments, compounds of the present invention preferentially or selectively agonize or antagonize ? opioid receptors. In certain embodiments, compounds of the present invention preferentially or selectively inhibit sodium or calcium ion channels and agonize or antagonize ?-opioid receptors.

Abstract: One aspect of the present invention relates to spirocyclic compounds. Another aspect of the present invention relates to the use of the spirocyclic compounds as ligands for mammalian G-protein-coupled receptors or sigma receptors. The present invention also relates to methods of modulating the activity of a G-protein-coupled receptor or a sigma receptor in a mammal using the spirocyclic compounds of the present invention. The present invention also relates to methods of treating various diseases in a mammal using the spirocyclic compounds of the present invention.

Abstract: One aspect of the present invention relates to piperidine-piperazine compounds. A second aspect of the present invention relates to the use of the piperidine-piperazine compounds as ligands for various mammalian cellular receptors or transporters or both, including dopamine, serotonin or norepinephrine receptors or transporters, any combination of them, or all of them. The compounds of the present invention will find use in the treatment of numerous ailments, conditions and diseases which afflict mammals, including but not limited to addiction, anxiety, depression, sexual dysfunction, hypertension, migraine, Alzheimer's disease, obesity, emesis, psychosis, analgesia, schizophrenia, Parkinson's disease, restless leg syndrome, sleeping disorders, attention deficit hyperactivity disorder, irritable bowel syndrome, premature ejaculation, menstrual dysphoria syndrome, urinary incontinence, inflammatory pain, neuropathic pain, Lesche-Nyhane disease, Wilson's disease, and Tourette's syndrome.

Abstract: This invention is directed to quinoline/quinoxaline compounds which inhibit platelet-derived growth factor tyrosine kinase and/or Lck tyrosine kinase, to pharmaceutical compositions comprising these compounds, and to the use of these compounds for treating a patient suffering from or subject to disorders/conditions involving cellular differentiation, proliferation, extracellular matrix production or mediator release and/or T cell activation and proliferation.

Abstract: One aspect of the present invention relates to novel peptidomimetic compounds. A second aspect of the present invention relates to the use of the novel peptidomimetic compounds as ligands—agonists or antagonists—for various cellular receptors, e.g., G-protein-coupled receptors and opioid receptors, and various cellular ion channels, e.g., sodium and calcium. In certain embodiments, compounds of the present invention preferentially or selectively inhibit sodium or calcium ion channels. In certain embodiments, compounds of the present invention preferentially or selectively agonize or antagonize $gm opioid receptors. In certain embodiments, compounds of the present invention preferentially or selectively inhibit sodium or calcium ion channels and agonize or antagonize $gm-opioid receptors.

Abstract: One aspect of the present invention relates to a method of treating of drug addiction or drug dependence in a mammal, comprising the step of administering to a mammal in need thereof a therapuetically effective amount of a heterocyclic compound, e.g., a 3-substituted piperidine. In a preferred embodiment, the method of the present invention treats cocaine addiction or methamphetamine addiction.

Abstract: One aspect of the present invention relates to spirocyclic compounds. Another aspect of the present invention relates to the use of the spirocyclic compounds as ligands for mammalian G-protein-coupled receptors or sigma receptors. The present invention also relates to methods of modulating the activity of a G-protein-coupled receptor or a sigma receptor in a mammal using the spirocyclic compounds of the present invention. The present invention also relates to methods of treating various diseases in a mammal using the spirocyclic compounds of the present invention.