| 摘要 |
<p>The invention provides compounds of formula I: (Formula I); wherein A, B, W, Y, Z, R1, R3 and R4 have any of the meanings defined in the specification and their pharmaceutically acceptable salts. The invention also provides pharmaceutical compositions comprising a compound of ffrmula I, processes for preparing compounds of formula I, Intermediates useful for preparing compounds of formula I,and therapeutic methods for treating cancer using compounds of formula I.</p> |
