[Constitution] A tricyclic heterocyclic compound represented by general formula (I) wherein R¹ and R² represent each hydrogen, lower alkyl, lower alkoxy, halogen or halogenated lower alkyl; R³ represents hydrogen or lower alkyl; R⁴ represents substituted phenyl or naphthyl; R⁵ represents hydrogen or lower alkyl; A represents lower alkylene; B represents -O- or -S-; and n represents 0 or 1. [Effect] It is excellent in the inhibition of acyl-CoA-cholesterol acyltransferase (ACAT) and is useful for treating or preventing arteriosclerosis.
[组成] 由通式(I)代表的
三环杂环化合物,其中 R¹ 和 R² 分别代表氢、低级烷基、低级烷氧基、卤素或卤代低级烷基;R³ 代表氢或低级烷基;R⁴ 代表取代苯基或
萘基;R⁵ 代表氢或低级烷基;A 代表低级亚烷基;B 代表 -O- 或 -S-;n 代表 0 或 1。[功效]它在抑制酰基-CoA-
胆固醇酰基转移酶(ACAT)方面表现出色,可用于治疗或预防动脉硬化。