Study problems on handout #8 continued:

Carefully study each of the following structures and assign appropriate receptor subtype selectivity for each of these compounds:

Ans: Fenoterol (b2 agonist); TA-064 (b1 agonist); Isoxsuprine (b2 agonist, please note there should be another a-methyl group on the other side of the nitrogen atom in this molecule); the unnamed compound is a long acting b2 agonist.