| abstract |
Provided are a compound of formula (I) or a pharmaceutically acceptable salt thereof, a method of obtaining the compound, and a pharmaceutical formulation containing the same: Wherein X, Y, Z, V 1 , V 2 , R 1 , R 2 , R 3 , R 4 and R 5 are as described herein. The compounds are useful as anticancer agents, in particular as agents in the treatment of solid tumors. |