| 摘要 |
<p>A compound of formula I: wherein: R1 and R2 are independently selected from hydrogen, an optionally substituted C1-7 alkyl group, C3-20 heterocyclyl group, or C5-20 aryl group, or may together form, along with the nitrogen atom to which they are attached, an optionally substituted heterocyclic ring having from 4 to 8 ring atoms; X is CH or N; n is 1 or 2; RC1 and RC2 are independently selected from H and methyl; when X is N, RX is selected from the group consisting of H, and optionally substituted C1-7 alkyl, C3-20 heterocyclyl, C5-20 aryl, acyl, ester, amido and sulfonyl; and when X is CH, RX is selected from the group consisting of H, and optionally substituted C1-7 alkyl, C3-20 heterocyclyl, C5-20 aryl, acyl, ester, amido, sulfonyl, amino and ether.</p> |
