Case Study $($Medicinal Chemistry$)$

$1.$Most drugs that are used to treat movement disorders are involved in increasing the amount of dopamine in the central nervous system. Please explain four mechanisms for doing this and give one example for each mechanism.

$2.$ Amantadine is a relatively strong base $)=(3\mathrm{.}5$ and is largely protonated at physiological pH$.$ However it can cross the blood $-$ brain barrier. Please explain.

$3.$MC is diagnosed with Parkinson's disease. The physician prescribes Stalevo$.$

From the following identify the compound or compounds that are in this drug.

Describe the mechanism of action of the compound or compounds in this product.

d$)$

e$)$