A compound represented by the formula (I):
or a pharmaceutically acceptable salt thereof, wherein:
R
1
represents a branched lower alkyl group having from 3 to 9 carbon atoms or the like;
R
2
represents a 6-membered heteroaryl group having 1 or 2 nitrogen atoms or the like;
R
3
represents a hydrogen atom, an alkanoylamino group or the like;
R
4
represents a hydrogen atom, a lower alkyl group or the like;
X
1
represents an oxygen atom or a sulfur atom;
X
2
represents an oxygen atom or a single bond; and
m indicates an integer of from 0 to 4.
This compound has a metabotropic glutamate receptor 1 inhibitory effect, and therefore is useful for the treatment of a brain disorder such as convulsion, acute pain, inflammatory pain, chronic pain, cerebral infraction or transient cerebral ischemic attack, a mental dysfunction such as schizophrenia, and a disease such as anxiety and drug addition.
化合物的
化学式为(I)或其药学上可接受的盐,其中:R1代表分支的低碳原子数为3至9的烷基或类似物;R2代表含有1或2个氮原子的6元杂环芳基或类似物;R3代表氢原子,烷酰胺基或类似物;R4代表氢原子,低碳原子数的烷基或类似物;X1代表氧原子或
硫原子;X2代表氧原子或单键;m表示0至4的整数。该化合物具有代谢型谷
氨酸受体1的抑制作用,因此可用于治疗脑部疾病,如惊厥、急性疼痛、炎性疼痛、慢性疼痛、脑梗塞或短暂性脑缺血发作、精神障碍如精神分裂症以及焦虑和药物成瘾等疾病。