There are described compounds of formula I,
in which R is hydrogen, hydroxy or alkoxy C 1 to 6, and X is hydroxy, carbonyl oxygen or alkoxy C 1 to 6, and pharmaceutically acceptable derivatives thereof.
There are also described methods for making the compounds and pharmaceutical, e.g. anti-allergic, compositions containing them.
所述化合物为式 I、
其中 R 为
氢、羟基或 C 1-6 烷
氧基,X 为羟基、羰基
氧或 C 1-6 烷
氧基,及其药学上可接受的衍
生物。
此外,还介绍了制造这些化合物的方法以及含有这些化合物的药物组合物,例如抗过敏组合物。