# Piperazine Derivatives: A Privileged Scaffold in Modern Synthesis and Medicinal Chemistry

## TL;DR

Piperazine derivatives are versatile chemical structures with wide therapeutic potential, and this review summarizes recent advances in their synthesis and medicinal applications.

## Contribution

The paper provides a comprehensive review of piperazine scaffold developments from 2014 to 2024, highlighting structure–property relationships and future directions.

## Key findings

- Substitution patterns on piperazine scaffolds significantly affect target affinity and pharmacokinetic properties.
- Diverse synthetic methods enable efficient production of optimized piperazine derivatives.
- Computational assessments and biological evaluations reveal reproducible structure–activity relationships.

## Abstract

Interest in piperazine scaffolds continues to rise due to their broad relevance across anti‐infective, anticancer, and neuroactive research. This review examines reports published from 2014 to 2024 and organizes current developments by therapeutic class, structural modification strategy, and computational assessment. Substitution patterns involving aryl, heterocyclic, and hybrid groups show consistent effects on target affinity, selectivity, and pharmacokinetic properties. Several series demonstrate strong activity in early biological evaluation, supported by docking and pharmacodynamic trends that highlight recurring structural motifs. Synthetic approaches, including N‐functionalization, reductive routes, cross‐coupling, C—H activation, microwave‐assisted reactions, and flow‐based methods, provide diverse access to optimized derivatives. Combined interpretation of synthetic, biological, and computational results outlines reproducible structure–property relationships that guide piperazine‐focused design. Future progress is expected to arise from hybrid scaffold engineering, improved strategies for central nervous system delivery, and the integration of predictive machine‐learning methods into lead refinement.

Piperazine‐based bioactive molecules represent a versatile class of compounds with broad therapeutic potential. Structural modification of the piperazine scaffold governs key structure–activity relationships, enabling antibacterial, antifungal, antitumor, neuroactive, and anti‐inflammatory activities. Diverse synthetic functionalization strategies support targeted substitution patterns that enhance potency, selectivity, and pharmacological performance.© 2026 WILEY‐VCH GmbH