Therapeutic and Pharmacological Flexibility of Cinnamoyl Compounds: Targeting Multiple Signaling Pathways

The extensive array of Natural Products (NPs), ranging from plants to microbes, is wellknown for their varied chemical characteristics and significant biological activity. Historically significant in drug discovery, natural products provide distinctive stereochemistry and complexity generated by diverse biosynthetic pathways. Structural alterations improve effectiveness and diminish adverse effects, driven by advancements in screening, chemistry, and bioinformatics. Natural products have been approved as drug candidates despite the laborious process involved in their isolation and elucidation, demonstrating their relevance. Cinnamaldehyde (CA), derived from Cinnamomum tree bark, exhibits antibacterial, anti-inflammatory, anticancer, antioxidant, neuroprotective, antifungal, and anti-diabetic properties by affecting cellular processes and signaling pathways like PI3K/AKT/mTOR, TGF-β/Smad, NF-κB, TLR4/MyD88/NF-κB, MAPKs, JAK/STAT, and Nrf2/HO-1. Small molecular entities, along with the presence of α,β-unsaturated carbonyl functionality, offer intriguing possibilities within the research framework of synthetic chemistry. Synthetic analogues of CA have been produced; nonetheless, their biological actions remain largely unexamined. The review highlights the pharmacological significance of cinnamoyl functionality, indicating its potential for creating multi-targeted drugs through unexamined structural changes. This review adopts a comprehensive study design, featuring an extensive search of databases like PubMed, Science Direct and Scopus using keywords such as "cinnamoyl compounds," "synthetic derivatives," "therapeutic flexibility," and "pharmacological pathways." Studies were selected based on their relevance to the pharmacological activities of cinnamoyl compounds' synthetic derivatives and their effects on multiple signaling pathways in therapeutic contexts, including experimental data. This article aims to provide theoretical support for the promising development of cinnamoyl compounds as potential candidates for new discoveries and therapeutic advancements.