A compound represented by the general formula below or a salt thereof is a useful intermediate in the production of a [2-(3,3,5,5-tetramethylcyclohexyl)phenyl]piperazine compound that has excellent cell adhesion inhibitory effect and cell invasion inhibitory effect and therefore is useful as a therapeutic or prophylactic agent for various inflammatory diseases and autoimmune diseases induced by the adhesion and invasion of leukocytes, such as inflammatory bowel diseases (particularly ulcerative colitis or Crohn's disease), irritable bowel syndrome, rheumatoid arthritis, psoriasis, multiple sclerosis, asthma and atopic dermatitis.
wherein R
1
and R
2
independently represent hydrogen or a protecting group for an amino group, or R
1
and R
2
bond together to form an optionally substituted pyrrole ring.
下列一般公式所代表的化合物或其盐,在制备具有优异细胞黏附抑制作用和细胞侵袭抑制作用的[2-(3,3,5,5-四甲基环己基)苯基]
哌嗪化合物的过程中,作为有用的中间体。因此,该化合物可用作治疗或预防各种由白细胞黏附和侵袭引起的炎症性疾病和自身免疫性疾病的药物,如炎症性肠病(尤其是溃疡性结肠炎或克罗恩病)、肠易激综合征、类风湿性关节炎、
银屑病、多发性硬化症、哮喘和特应性皮炎。其中,R1和R2分别表示氢或
氨基保护基,或R1和R2结合形成可选取代的
吡咯环。