The invention relates to new annelated indoleketones with an imidazolylalkyl substituent. The new compounds can be represented by formula 2
wherein
-R₁ is alkyl or alkoxy having 1-4 C-atoms, hydroxy, halogen, trifluoromethyl, a group R₅R₆N or R₅R₆-N-CO, wherein R₅ and R₆ are hydrogen or alkyl having 1-4 C-atoms or wherein R₅R₆N is a saturated 5-6 ring, and n has the value 0, 1 or 2;
-A is a group of formulae 3, 4 or 5
wherein one of the groups R₂, R₃ and R₄ is hydrogen, alkyl having 1-4 C-atoms, cycloalkyl having 3-6 C-atoms or alkenyl having 2-4 C-atoms and the two other groups, independently of each other, are hydrogen or alkyl having 1-4 C-atoms,
-p has the value 0-3 and q has the value 2-5.
It has been found that these new compounds and farmaceutically acceptable acid addition salts thereof have a good antagonistic activity of "neuronal" 5-hydroxytryptamine(5- HT) receptors. The activity is considerably prolonged in view of related known compounds. Moreover, the present compound have a lower toxicity.
本发明涉及带有
咪唑烷基取代基的新型环化
吲哚酮。新化合物可由式 2 表示
其中
-R₁ 是烷基或具有 1-4 个 C 原子的烷氧基、羟基、卤素、三
氟甲基、基团 R₅R₆N 或 R₅R₆-N-CO、其中 R₅ 和 R₆ 是氢或具有 1-4 个 C 原子的烷基,或其中 R₅R₆N 是饱和的 5-6 环,且 n 的值为 0、1 或 2;
-A 是式 3、4 或 5 的基团
其中基团 R₂、R₃ 和 R₄ 中的一个是氢、具有 1-4 个 C 原子的烷基、具有 3-6 个 C 原子的环烷基或具有 2-4 个 C 原子的烯基,另外两个基团相互独立地是氢或具有 1-4 个 C 原子的烷基、
-p 的值为 0-3,q 的值为 2-5。
研究发现,这些新化合物及其可接受的酸加成盐对 "神经元 "5-羟
色胺(5- HT)受体具有良好的拮抗活性。与相关的已知化合物相比,其活性大大延长。此外,本化合物的毒性较低。