A compound of formula (I):
or a tautomeric form thereof, or a pharmaceutically acceptable salt thereof, wherein:
R represents hydrogen or alkyl;
R1 represents an alkyl group or a substituted or unsubstituted aryl group;
R2 and R3 each represent hydrogen, or R2 and R3 together represent a bond;
A represents a benzene ring having in total up to five substituents;
X represents oxygen, sulphur or a moiety NR4 wherein R4 represents hydrogen or alkyl; and
n represents an integer in the range of from 2 to 6; a process for preparing such a compound, a composition containing such a compound and the use of the compound and composition in medicine.
式(I)化合物
或其同分异构形式,或其药学上可接受的盐,其中
R 代表氢或烷基
R1 代表烷基或取代或未取代的芳基;
R2 和 R3 各自代表氢,或 R2 和 R3 共同代表键;
A 代表一个苯环,其上总共有最多五个取代基;
X 代表氧、
硫或分子 NR4,其中 R4 代表氢或烷基;以及
n 代表 2 至 6 之间的整数;制备这种化合物的工艺、含有这种化合物的组合物以及这种化合物和组合物在医药中的用途。