Compounds of the Formula:
wherein:
R¹ and R² areindependently hydrogen or lower alkyl, or when taken together with the carbon to which they are attached are cycloalkyl of 3 to 8 carbon atoms;
R³ ishydrogen, halo, fluoro lower alkyl, cyano, or nitro;
R⁴ is
R⁵ and R⁶ areindependently hydrogen or lower alkyl; and
R⁷ is-NR⁸R⁹; wherein:
R⁸ ishydrogen; lower alkyl; lower alkoxy; hydroxy; or hydroxy lower alkyl; and
R⁹ ishydrogen; lower alkyl; hydroxy lower alkyl; -SO₂R¹⁰; -CO₂R¹⁰; -C(O)NR¹¹R¹²; -C(S)NR¹¹R¹²; or -C(O)R¹²; wherein
R¹⁰ islower alkyl;
R¹¹ ishydrogen or lower alkyl; and
R¹² ishydrogen, lower alkyl, or fluoro lower alkyl;
with the proviso that R⁸ and R⁹ cannot both be hydrogen; and the pharmaceutically acceptable salts thereof. The compounds and salts exhibit useful pharmacological properties, including potassium channel activating properties and 5-lipoxygenase inhibiting properties, and in particular are useful as smooth muscle relaxants and bronchodilators.
式的化合物:
其中
R¹ 和 R² 分别为
氢或低级烷基,或与所连接的
碳一起为 3 至 8 个
碳原子的
环烷基;
R³ 是
氢、卤素、
氟低级烷基、
氰基或硝基;
R⁴ 是
R⁵ 和 R⁶ 分别是
氢或低级烷基;以及
R⁷ 是-NR⁸R⁹;其中
R⁸ 是
氢;低级烷基;低级烷
氧基;羟基;或羟基低级烷基;和
R𠞙 是
氢;低级烷基;羟基低级烷基;-SO₂R¹⁰;-CO₂R¹⁰;-C(O)NR¹R¹²;-C(S)NR¹R¹²;或 -C(O)R¹²;其中
R¹⁰ 是低级烷基;
R¹¹ 是
氢或低级烷基;以及
R¹² 是
氢、低级烷基或
氟低级烷基;
但 R⁸ 和 R𠞙 不能都是
氢;及其药学上可接受的盐。这些化合物和盐具有有用的药理特性,包括
钾通道激活特性和 5-脂
氧合酶抑制特性,特别是可用作平滑肌松弛剂和支气管扩张剂。