| abstract |
An unsaturated nitrogen heterocyclic compound of formula (I) as defined herein: (I), a composition containing the same, and a process for producing such a compound. Also provided herein are methods of treating disorders or diseases treatable by inhibition of PDE10, such as obesity, Huntington's disease, non-insulin dependent diabetes mellitus, schizophrenia, bipolar disorder, compulsive personality disorder, and the like. |