This review comprehensively summarizes recent advances in the field of hydrazinecarboxamide (semicarbazide) derivatives, highlighting their significant therapeutic potential and a broad spectrum of biological activities. As a promising and privileged scaffold in medicinal chemistry, hydrazinecarboxamides have emerged as a versatile class of compounds with significant bioactive properties. Based on their substitutions, their structural diversity permits extensive chemical modifications to enhance their interactions with various biological targets to combat multiple disorders. Notable, this group of compounds has shown significant efficacy against numerous cancer cell lines through diverse mechanisms of action and potent inhibition of enzymes, including cholinesterases, carbonic anhydrases, cyclooxygenases, lipoxygenases, etc. Beyond these, they have also been investigated for their anticonvulsive, analgesic/anti-inflammatory, and antioxidant properties, with detailed structure-activity relationships. For many applications, the hybridization of hydrazinecarboxamides with other bioactive scaffolds, such as primaquine, is of particular interest and offers advantages. Despite their promises, challenges such as suboptimal physicochemical properties and selectivity issues of certain derivatives require further effort. The review aims to inspire future innovation in the design and development of new potential hydrazinecarboxamide-based drugs, addressing existing challenges and expanding their therapeutic applications.

Department of Organic and Bioorganic Chemistry Faculty of Pharmacy Charles University Akademika Heyrovského 1203 500 03 Hradec Králové Czech Republic

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