Isostere meaning

Isostere refers to a group of chemical compounds that have similar physical and chemical properties.


Isostere definitions

Word backwards eretsosi
Part of speech Noun
Syllabic division i-so-stere
Plural The plural of the word "isostere" is "isosteres."
Total letters 8
Vogais (3) i,o,e
Consonants (3) s,t,r

Isostere refers to a term used in medicinal chemistry to describe molecules or ions that have a similar shape and charge distribution, making them interchangeable in a biological system without significant changes in activity. Isosteres are often used in drug design to modify the properties of a compound while maintaining its biological activity.

Importance of Isosteres in Drug Design

Isosteres play a crucial role in drug design by allowing chemists to make strategic substitutions in a molecule to enhance its pharmacokinetic or pharmacodynamic properties. By replacing a functional group with an isostere, researchers can improve a drug's bioavailability, efficacy, or selectivity while minimizing unwanted side effects.

Types of Isosteres

There are several types of isosteres commonly used in medicinal chemistry, including bioisosteres, classical isosteres, non-classical isosteres, and molecular isosteres. Each type of isostere serves a specific purpose in drug design and optimization, depending on the desired outcome for the compound.

For example, sulfur is often used as a bioisostere for oxygen due to its similar size and electron distribution, making it a valuable substitution in drug molecules.

Applications of Isosteres

Isosteres are frequently employed in the development of new pharmaceuticals to improve drug-like properties and optimize therapeutic effects. By incorporating isosteres into a molecule, researchers can fine-tune its physicochemical characteristics and interactions with biological targets, leading to more potent and selective compounds.

The use of isosteres can also help overcome issues such as metabolic instability, poor solubility, or low bioavailability, resulting in more successful drug candidates with improved clinical outcomes.

Overall, isosteres play a vital role in the field of medicinal chemistry by providing researchers with valuable tools to modulate the properties of drug molecules and enhance their therapeutic potential. Understanding the principles of isosterism allows for the rational design of new compounds with improved pharmacological profiles, paving the way for the discovery of novel and effective medications to treat various diseases.


Isostere Examples

  1. Scientists use isostere to describe molecules with similar shape and electronic properties.
  2. Drug designers look for isosteres to optimize the pharmacokinetics of a compound.
  3. In chemistry, isosteres are used to replace specific functional groups to alter a molecule's properties.
  4. Isosterism plays a crucial role in the development of new pharmaceuticals.
  5. Researchers study isosteres to understand the structure-activity relationship of different compounds.
  6. Pharmaceutical companies utilize isosteres to enhance drug potency and reduce toxicity.
  7. Organic chemists often employ isosteric replacements to fine-tune the biological activity of molecules.
  8. Isosteric compounds can exhibit similar physical properties despite differences in structure.
  9. Isosteres are essential tools in medicinal chemistry for drug discovery and optimization.
  10. The concept of isosterism helps scientists design more effective and safer drugs.


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  • Updated 04/05/2024 - 21:56:17