abstract |
Compounds of Formula (I) are described: preferably subject to the proviso that either (a) R2 and R3 together form -O-CH(R10)-O-, or (b) R5 and R6 together form -O-CH(R10)-O-, wherein R10 is H, halo, or loweralkyl. Pharmaceutical salts, formulations, and methods of using the same in the treatment of cancer are also described. |