A and B were synthesized as potential anticancer compounds

$A$

$($i$)$ Identify the class of anticancer compounds to which A belongs. Compare the attributes of $A$

with a successful therapeutic agent belonging to the same class considering the chemical

reactivity, biological target and any metabolism that is necessary for efficacy, and so assess

whether $A$ is likely to be a good anticancer drug.

$($ii$)$ Identify the class of anticancer compounds to which $B$ belongs. Compare the attributes of $B$

with a successful therapeutic agent belonging to the same class considering the chemical

reactivity, biological target and selectivity, and so assess whether B is likely to be a good

anticancer drug.