This invention is directed to compounds (I), which are PDE10A enzyme inhibitors. The invention provides a pharmaceutical composition comprising a therapeutically effective amount of a compound of the invention and a pharmaceutically acceptable carrier. The present invention also provides processes for the preparation of the compounds of formula. The present invention further provides a compound of formula (I) for use in treating a subject suffering from a neurodegenerative disorder, a drug addiction or a psychiatric disorder (formula I), wherein HET is a heteroaromatic group of formula II containing from 2 to 4 nitrogen atoms: (formula II).
                            该发明涉及化合物(I),这些化合物是PDE10A酶
抑制剂。该发明提供了一种包括该发明化合物的治疗有效量和药用可接受载体的药物组合物。本发明还提供了制备上述化合物的方法。本发明还提供了一种用于治疗患有神经退行性疾病、药物成瘾或精神障碍的患者的化合物(式I),其中HET是一个含有2至4个氮原子的式II杂环
芳烃基团:(式II)。