Abstract: This invention relates to a process for the preparation of 7-(4-methyl-1-piperazinyl)benzoxazol-2(3H)-one hydrochloride, a partial dopamine-D2 receptor agonist and a full serotonin 5-HT1A receptor agonist. This invention also relates to the monohydrate of said compound, as well as to pharmaceutical compositions containing these compounds, to methods for preparing these compounds, to methods for preparing intermediates useful for their synthesis, and to methods for preparing compositions containing these compounds.

Abstract: The invention relates to a novel chemical route to 3,4-diaryl-4,5-dihydro-(1H)-pyrazole-1-carbox-amidine derivatives, known as potent cannabinoid-CB1 receptor antagonists, and to novel intermediates of these compounds. The synthetic route produced considerably higher yields than those reported, without the use of corrosive reagents. The process concerns the preparation of a compound of formula (I): wherein the symbols have the meanings given in the description.

Abstract: This invention relates to a process for the preparation of 7-(4-methyl-1-piperazinyl)benzoxazol-2(3H)-one hydrochloride, a partial dopamine-D2 receptor agonist and a full serotonin 5-HT1A receptor agonist. 7-(4-methyl-1-piperazinyl)benzoxazol-2(3H)-one hydrochloride The invention also relates to polymorphic forms of said compound, as well as to pharmaceutical compositions containing these compounds, to methods for preparing the compounds, to methods for preparing intermediates useful for their synthesis, and to methods for preparing compositions containing these compounds.