The present invention relates to compounds of the general formula (IV) and (II) and salts and physiologically functional derivatives thereof,
wherein
X is C—R
8
or N; and
Z is independently one of the following groups:
本发明涉及一般式(IV)和(II)的化合物以及其盐和生理功能衍
生物,其中X为C—R8或N; 而Z是以下组之一: