Compounds of formula (I) and pharmaceutically acceptable salts thereof:
wherein:
a is 1 to 3;
b is 0 to 2;
c is 2 to 4;
d is 1 to 5;
X is sulphur, oxygen or -CH2-;
Y is oxygen, sulphur, NR4 or CHR5 wherein R4 is hydrogen, C1-4 alkyl, NO2 or CN, C1-4 alkylsulphonyl or phenylsulphonyl optionally substituted in the phenyl moiety by one or two substituents selected from C1-4 alkyl, C1-4 alkoxy, fluorine, chlorine or bromine, and R5 is N02, C1-4 alkylsulphonyl or optionally substituted phenylsulphonyl as defined for R4;
R1 and R2 are independently hydrogen, C1-4 alkyl, or C3-6 cycloalkyl; or R1 and R2 taken together with the nitrogen to which they are attached represent a pyrrolidino or piperidino ring;
R6 and R7 are independently hydrogen or C1-6 alkyl; and
Ar is furan or thiophene attached at positions 2 and 5- or benzene attached at positions 1- and 3- or 1- and 4-, having useful pharmacological activity, processes for their preparation and their use.
式(I)化合物及其药学上可接受的盐类:
其中
a 是 1 至 3
b 是 0 至 2
c 为 2 至 4
d 是 1 至 5;
X 是
硫、氧或-
CH2-;
Y 是氧、
硫、NR4 或 CHR5,其中 R4 是氢、C1-4 烷基、
NO2 或 CN、C1-4 烷基磺酰基或苯基磺酰基,可任选被选自 C1-4 烷基、C1-4 烷氧基、
氟、
氯或
溴的一个或两个取代基取代;R5 是 N02、C1-4 烷基磺酰基或任选被取代的苯基磺酰基,如 R4 所定义;
R1 和 R2 独立地为氢、C1-4 烷基或 C3-6 环烷基;或 R1 和 R2 与它们所连接的氮一起代表
吡咯烷或
哌啶环;
R6 和 R7 独立地为氢或 C1-6 烷基;以及
Ar是连接在2-和5-位的
呋喃或
噻吩,或连接在1-和3-位或1-和4-位的苯,具有有用的药理活性、制备工艺和用途。