There are provided compounds of the formula
wherein X, Y and R
1
to R
8
are described herein along with the enantiomers, pharmaceutically acceptable salts and esters thereof. The compounds are useful as anticancer agents.
There are provided compounds of the formula
wherein X, Y and R1 to R8 are described herein along with the enantiomers, pharmaceutically acceptable salts and esters thereof. The compounds are useful as anticancer agents.