common functional groups were studied such as alkanes, alkenes, alkynes, amines, benzene rings, epoxides, imines, nitrile, esters, ketones, aldehydes, amides, carboxylic acids,

Certain functional groups in molecules have known reactivity or toxicology associated with them such that the structures should be avoided in drug discovery. Compound A below has three functional groups that were discussed in class to avoid. Circle the functional groups that should be avoided and describe why for each one