Compounds of formula (I), or a pharmaceutically acceptable salt thereof:
wherein
L is NH or O;
R₁ is hydrogen, fluoro or chloro;
R₂ and R₅ are independently hydrogen or C₁₋₆ alkyl or together are a bond; or
R₂ and R₃ and/or R₄ and R₅, together are C₂₋₇ polymethylene or-(CH₂)m-O-(CH₂)x- where m and x are 1 to 5 such that m+x is 2 to 6;
R₄ is C₁₋₇ acyl, C₁₋₆ alkoxycarbonyl, hydroxycarbonyl, aminocarbonyl optionally substituted by one or two C₁₋₆ alkyl groups, CF₃, C₁₋₆ alkyl substituted by C₁₋₆ alkoxy, C₁₋₆ alkylthio or by C₁₋₆ alkoxycarbonyl, or R₄ is phenyl or phenyl-C₁₋₄ alkyl optionally substituted in the phenyl ring by one or two of halogen, C₁₋₆ alkyl or C₁₋₆ alkoxy;
Z is a group of formula (a), (b) or (c)
wherein
n is 2 or 3;
p is 1 or 2;
q is 1 to 3;
r is 1 to 3; and
R₆ or R₇ is C₁₋₄ alkyl; having 5-HT₃ receptor antagonist activity, a process for their preparation and their use as pharmaceuticals.
式 (I) 的化合物或其药学上可接受的盐:
其中
L 是 NH 或 O
R₁ 是氢、
氟或
氯;
R₂ 和 R₅ 独立地为氢或 C₁₋₆ 烷基,或合在一起为键;或
R₂ 和 R₃ 和/或 R₄ 和 R₅ 共同为 C₂₋₇ 聚亚甲基或-(CH₂)m-O-(CH₂)x-,其中 m 和 x 为 1 至 5,从而 m+x 为 2 至 6;
R₄ 是 C₁₋₇酰基、C₁₋₆ 烷氧基羰基、羟基羰基、任选被一个或两个 C₁₋₆ 烷基取代的
氨基羰基、CF₃、被 C₁₋₆ 烷氧基取代的 C₁₋₆ 烷基、或 R₄ 是苯基或苯基-C₁₋₄烷基,可任选在苯基环上被一个或两个卤素、C₁₋₆ 烷基或 C₁₋₆ 烷氧基取代;
Z 是式(a)、(b)或(c)的基团
其中
n 是 2 或 3
p 是 1 或 2
q 是 1 至 3
r 为 1 至 3;以及
R₆ 或 R₇ 是 C₁₋₄烷基;具有 5-HT₃ 受体拮抗剂活性、其制备工艺和作为药物的用途。