Abstract: A novel scalable synthesis for the preparation of 7-(3-pyridinyI)-1,7-diazaspiro[4.4)nonane has been developed, and 7-(3-pyridinyl)-1,7-diazaspiro[4.4]nonane salts have been formed with succinic acid and oxalic acid. Additionally, 7-(3-pyridinyl)-1,7-diaza-spiro[4.4]nonane has been separated into its stereoisomers via resolution with L and D di-p-toluoyltartaric acids, giving (R)- and (S)-7-(3-pyridinyl)-1,7-diazaspiro[4.4]nonane of high enantiomeric purity. Numerous solid salts of the resulting (R)- and (S)-7-(3-pyridinyl)-1,7-diazaspiro[4.4}nonane have been prepared. Methods for the preparation of the racemic and enantiomeric salts, pharmaceutical compositions comprising such salts, and uses thereof are disclosed. The salts can be administered to patients susceptible to or suffering from conditions and disorders, such as central nervous system disorders, to treat and/or prevent such disorders.

Abstract: The present invention provides a combination of (a) an antipsychotic and (b) an alpha4/beta2 (?4?2)-neuronal nicotinic receptor agonist. The invention further relates to pharmaceutical compositions comprising said combination and to the use of the combination in therapy. The invention further relates to a kit comprising the combination and use of said kit in therapy.