The present invention relates to compound of formula (I), wherein A represents a 5- or 6-membered heteroaromatic ring system containing up to 4 heteroatoms selected from O, S and N, which is optionally substituted, and to a stereoisomer, pharmaceutically acceptable salt or ester, or prodrug thereof.
本发明涉及式(I)的化合物,其中A代表一个含有最多4个来自O、S和N的杂原子的5-或6成员杂芳环系统,该环系统可以选择性地被取代,以及其立体异构体、药学上可接受的盐或
酯,或前药。