Prodrug Design and Development in Medicinal Chemistry

Flashcards focusing on key vocabulary and concepts in the study of prodrugs within medicinal chemistry.

Prodrug

An inactive chemical derivative of a drug that must be bioactivated in vivo to generate the pharmacologically active form.

Bioactivation

The process by which a prodrug is metabolized to release the active drug.

Promoeity

A chemical group added to or modified on the parent drug to facilitate its transport or delivery.

Bioavailability

The proportion of a drug that enters circulation when introduced into the body and is available for action.

Therapeutic effect

The intended beneficial effect of a drug.

Biological problems

Issues associated with the parent drug form that a prodrug aims to overcome.

Enzymatic hydrolysis

The process by which esters are broken down by enzymes, typically in the body.

Log P

A measure of the lipophilicity (fat solubility) of a compound.

Aliphatic esters

Types of esters derived from straight or branched chain fatty acids.

Aryl esters

Esters derived from aromatic acids.

Labile esters

Esters that are prone to hydrolysis and thus can quickly activate the prodrug.

N-Mannich base

A type of prodrug formed by reacting an amine, an aldehyde, and a parent drug containing an NH group.

Chemical derivatisation

The process of chemically modifying a parent drug to form a prodrug.

Hydrolysis

The chemical breakdown of a compound due to reaction with water.

Oxidation

A metabolic process that involves the addition of oxygen or the loss of hydrogen.

Reduction

A metabolic process where a drug molecule gains electrons or hydrogen.

Bioactivation site

Specific location in the body where bioactivation of the prodrug occurs.

Amide prodrug

Prodrugs derived from a drug that has a carboxylic acid or an NH functional group.

Pharmaceutical problem

Challenges in drug delivery that prodrugs are designed to solve.

Parent drug

The original form of a drug before modification into a prodrug.

Targeted drug action

The ability to deliver a drug specifically to certain tissues or cells.

Toxicity

The degree to which a substance can harm humans or animals.

Stable formulation

A drug formulation designed to remain effective over time without degradation.

Biotransformation

The chemical alteration of a substance by living organisms or enzyme systems.

CYP enzymes

Cytochrome P450 enzymes, important for drug metabolism.

Drug elimination

The process of removing a drug from the body, including metabolism and excretion.

Bioactive form

The active form of a drug that exerts therapeutic effects.

Ionisable ester

Ester prodrugs that can exist as charged ions in solution.

Chemical stability

The ability of a drug to remain unchanged under various conditions.

Depot capability

The ability of a prodrug to be stored in the body and released slowly over time.

Formulation compatibility

The ability of a prodrug to mix well with other components in a drug formulation.

Controlled drug release

A system that delivers medications at a predetermined rate.

Ester prodrug

Prodrugs formed by esterifying the functional groups of parent drugs.

Parenteral administration

Administration of a drug by injection, bypassing the digestive system.

Hydrolytic stability

The resistance of a compound to hydrolysis.

Acid irritability

The tendency of a drug to irritate the gastrointestinal tract.

Formulation issues

Challenges related to the composition and delivery of a drug.

Selective drug action

The ability of a drug to act on specific targets while minimizing effects on others.

Parent drug properties

Chemical and physical properties that define the characteristics of the original drug.

Dosage forms

Different physical forms of a medication, such as tablets, injections, and creams.

Alkyl groups

Hydrocarbon chains that can modify the properties of a drug.

Clinical relevance

The significance of a drug's effects and applications in medical practice.

Hydrophilic drugs

Drugs that are soluble in water.

Lipophilic drugs

Drugs that are soluble in fats or lipids.

Half-life

The time required for the concentration of a drug in the bloodstream to decrease by half.

Esterification

The process of forming esters from acids and alcohols.

Synthesis

The process of combining different elements to create a compound.

In vivo

Latin term meaning 'within the living'; used in reference to processes occurring in a living organism.

In vitro

Latin term meaning 'in glass'; used in reference to processes performed outside a living organism.

Antibacterial drugs

Medications used to treat bacterial infections.

Anticancer drugs

Medications used to treat cancer.

Antimetabolite

A drug that interferes with the normal metabolism of cells.

Antiviral drugs

Medications used to treat viral infections.

Bioavailability enhancement

Modification techniques to improve the absorption of a drug into the bloodstream.

Drug metabolism

The chemical alteration of a drug by the body, often leading to elimination.

Pharmacological activity

The effects a drug has on biological systems.

Chemical classes of prodrugs

The various categories of prodrugs based on their chemical structure and properties.