The present invention provides a compound of the formula (I):
(wherein, R1 is ethyl optionally substituted by halogen or amino optionally substituted by lower alkyl,
R2 and R3 are each independently hydrogen or lower alkyl,
X is cycloalkylene, lower alkylene or piperidinediyl,
Z is optionally substituted phenyl or optionally substituted heterocyclyl) prodrug, pharmaceutically acceptable salt or solvate thereof..
本发明提供了一种式 (I) 的化合物:
(其中,R1 是任选被卤素取代的乙基或任选被低级烷基取代的
氨基、
R2和R3各自独立地为氢或低级烷基、
X 是环亚烷基、低级亚烷基或
哌啶二基、
Z 是任选取代的苯基或任选取代的杂环基)的原药、药学上可接受的盐或其溶液。