The present invention provides a compound of formula (I)
or a salt, ester or amide thereof: wherein R1 is -CH2-CH2-, CH2-O- or -O-CH2-: R2 and R3 are the same or different and are each hydrogen, C1-4 alkyl or taken together with the nitrogen comprise a nitrogen-containing heterocyclic ring having four to six ring members; R4 is a single bond or a C1-7 bivalent aliphatic hydrocarbon group may be joined to the aromatic ring system at the 2, 3. 8 or 9 positions; n is 0 to 3. processes for its preparation and intermediates therefor, pharmaceutical compositions containing it and its use in medicine.
本发明提供了式(I)化合物
或其盐、酯或酰胺: 其中 R1 是 -
CH2- -、 -O- 或 -O- -:R2 和 R3 相同或不同,各自为氢、C1-4 烷基或与氮一起组成具有四至六个环成员的含氮杂环;R4 为单键或 C1-7 二价脂肪族烃基,可在 2、3.其制备过程及其中间体、含有该物质的药物组合物及其在医学中的用途。