| 摘要 |
The present invention relates to Formula (I), wherein—if X=NH, each of R1, R2, R3, R4 represents a hydrogen atom; if X=N, the core is aromatic, and R2, R3 and R4 represent hydrogen atoms, and R1=H, halogen, aryl, heteroaryl, alkenyl or acetylenyl; or R1, R2, R3, R4 are defined such that R1 or R2 or R3 or R4 represents a methyl group, and the three other radicals represent a hydrogen atom. |
