| 摘要 |
A compound of the formula (I), and pharmaceutically acceptable salts thereof:
<CHEM>
wherein:
R1 is a C1-6 alkoxy group;
R2 and R3 are the same or different and are hydrogen, halogen, CF3, C2-7 acyl, C2-7 acylamino, or amino, aminocarbonyl or aminosulphone optionally substituted by one or two C1-6 alkyl groups, C1-6 alkylsulphone or nitro;
R5 is hydrogen or C1-6 alkyl;
R6 is C1-7 alkyl or a group -(CH2)sR7 where s is 0 to 2 and R7 is a C3-8 cycloalkyl group, or a group -(CH2)tRs where t is 1 or 2 and Rs is C2-5 alkenyl or a phenyl group optionally substituted by one or two substituents selected from C1-6 alkyl, C1-4 alkoxy, trifluoromethyl and halogen; and
n, p and q are independently 0 to 2; have useful pharmacological activity. |
