Synthesis, Structural Characterization and Anticancer Activity of New 5-Trifluoromethyl-2-thioxo-thiazolo[4,5-d]pyrimidine Derivatives

Exploring β-carboline hybrids and their derivatives: A review on synthesis and anticancer efficiency

β-Carboline is a crucial compound in medicinal chemistry known for its versatile pharmacological activities. Recent research has focused on hybrid molecules incorporating a β-carboline scaffold linked to other pharmacophore moieties. These hybrid compounds have demonstrated diverse therapeutic properties, including anticancer, antianxiety, antimalarial, antidepressant, anti-inflammatory, antileishmanial, and antioxidant effects. This review highlights studies conducted from 2014 to the present with a particular emphasis on the development of β-carboline hybrid compounds and their derivatives as potent anticancer agents. The structure-activity relationship (SAR) analysis reveals that these hybrids exhibit significant cytotoxicity against various cancer cell lines. This review aims to inspire further research into the novel synthesis and evolution of β-carboline hybrids and their derivatives, potentially leading to new therapeutic advancements.

Thiazolopyrimidine, a privileged scaffold: Recent updates on synthetic and pharmacological perspective in drug discovery

Heterocyclic compounds are emerging as a privileged scaffold with a plethora of biological activities. In recent years, interest in thiazolopyrimidine chemistry has significantly increased due to its diverse pharmacological activities, such as anticancer, antimicrobial, analgesic, antioxidant, anti-inflammatory, and so on. It provides various opportunities for structural modifications. The thiazolopyrimidine scaffold provides a key intermediate for the synthesis of various fused heterocycles and compounds of medicinal importance. By considering the role of this privileged scaffold, researchers have designed different synthetic protocols for the synthesis of thiazolopyrimidine derivatives. In the present review, several advancements in the synthetic methodology for the synthesis of thiazolopyrimidine derivatives with different substitutions have been discussed along with pharmacological activity, which provides key insights into the synthetic protocol and role of different substitutions on the core moiety for rational drug design and drug discovery.

3-(Propylthio)propane-1-sulfonic acid immobilized on functionalized magnetic nanoparticles as an efficient catalyst for one-pot synthesis of dihydrotetrazolo[1,5-a]pyrimidine and tetrahydrotetrazolo[5,1-b]quinazolinone derivatives

An efficient and reusable catalyst, which is 3-(propylthio)propane-1-sulfonic acid immobillized on functionalized magnetic nanoparticles [PTPSA@SiO2-Fe3O4], has been synthesized. For the first time, it is highlighted under solvent-free conditions for the catalytic activity in multicomponent synthesis of dihydrotetrazolo[1,5-a]pyrimidines, dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylates and tetrahydrotetrazolo[5,1-b]quinazolinones. The structure of the catalyst was well confirmed by characterization techniques, such as FT-IR, TGA, SEM-EDX, elemental mapping, TEM, VSM and elemental analysis. Besides, this unique catalyst was found to be effectual up to six cycles, which made it spotlighted. Recyclability of catalyst, excellent yield of the products, short reaction time and clean reaction profile are the advantages of the present protocol.

Crystal structure and Hirshfeld surface analysis of ethyl (3E)-5-(4-chloro-phen-yl)-3-{[(4-chloro-phen-yl)formamido]-imino}-7-methyl-2H,3H,5H-[1,3]thia-zolo[3,2-a]pyrimidine-6-carboxyl-ate

In the title mol-ecule, C23H20Cl2N4O3S, the thia-zole ring is planar while the pyrimidine unit fused to it adopts a screw-boat conformation. In the crystal, thick sheets parallel to the bc plane are formed by N-H⋯N, C-H⋯N and C-H⋯O hydrogen bonds together with π-π inter-actions between the formamido carbonyl groups and the thia-zole rings. Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H⋯H (30.9%), Cl⋯H/H⋯Cl (20.7%), C⋯H/H⋯C (16.8%) and O⋯H/H⋯O (11.4%) inter-actions.

Thiazole: A Versatile Standalone Moiety Contributing to the Development of Various Drugs and Biologically Active Agents

For many decades, the thiazole moiety has been an important heterocycle in the world of chemistry. The thiazole ring consists of sulfur and nitrogen in such a fashion that the pi (π) electrons are free to move from one bond to other bonds rendering aromatic ring properties. On account of its aromaticity, the ring has many reactive positions where donor–acceptor, nucleophilic, oxidation reactions, etc., may take place. Molecules containing a thiazole ring, when entering physiological systems, behave unpredictably and reset the system differently. These molecules may activate/stop the biochemical pathways and enzymes or stimulate/block the receptors in the biological systems. Therefore, medicinal chemists have been focusing their efforts on thiazole-bearing compounds in order to develop novel therapeutic agents for a variety of pathological conditions. This review attempts to inform the readers on three major classes of thiazole-bearing molecules: Thiazoles as treatment drugs, thiazoles in clinical trials, and thiazoles in preclinical and developmental stages. A compilation of preclinical and developmental thiazole-bearing molecules is presented, focusing on their brief synthetic description and preclinical studies relating to structure-based activity analysis. The authors expect that the current review may succeed in drawing the attention of medicinal chemists to finding new leads, which may later be translated into new drugs.