Development of novel 9H-carbazole-4H-chromene hybrids as dual cholinesterase inhibitors for the treatment of Alzheimer's disease.

Alzheimer's disease (AD) is a neurodegenerative disease affecting mental ability and neurocognitive functions. Cholinesterase enzymes affect concentration of acetylcholine in the brain, leading to dementia. Thus, there is an urgent need to develop novel dual cholinesterase inhibitors as possible anti-AD drugs.

Identification of structural scaffold from interbioscreen (IBS) database to inhibit 3CLpro, PLpro, and RdRp of SARS-CoV-2 using molecular docking and dynamic simulation studies.

A novel coronavirus SARS-CoV-2 has caused a worldwide pandemic and remained a severe threat to the entire human population. Researchers worldwide are struggling to find an effective drug treatment to combat this deadly disease. Many FDA-approved drugs from varying inhibitory classes and plant-derived compounds are screened to combat this virus.

Design, synthesis, and pharmacological evaluation of [1, 3] dioxolo-chromeno[2,3-b]pyridines as anti-seizure agents.

An efficient one-pot three-component reaction for the synthesis of [1,3]dioxolo[4',5':6,7]chromeno[2,3-b]pyridines 4(a-i) has been developed. Synthesis was achieved by reacting sesamol (1), aromatic aldehydes 2(a-i), and 2-aminopropene-1,1,3-tricarbonitrile (3) in the presence of triethylamine at 100 °C under neat reaction condition. Simple operational procedure, broad substrate scope, column chromatography free separations, and high yield of products make it an efficient and largely acceptable synthetic strategy.

Discovery and Anticancer Activity of Novel 1,3,4-Thiadiazole- and Aziridine-Based Indolin-2-ones Design Followed by Supramolecular Green Synthesis.

Three crucial anticancer scaffolds, namely indolin-2-one, 1,3,4-thiadiazole, and aziridine, are explored to synthesize virtually screened target molecules based on the c-KIT kinase protein. The stem cell factor receptor c-KIT was selected as target because most U.S.

Arylidenemalononitriles as Versatile Synthons in Heterocyclic Synthesis.

Background: Arylidenemalononitriles are valuable synthons for the construction of a variety of novel complex heterocyclic motifs, fused heterocycle derivatives, and spirocyclic compounds. They are versatile chemical intermediates and have increasing applications in industry, agriculture, medicine, and biological science.

Objective: The aim of this review is to highlight the preparation methods and reactions of arylidenemalononitriles in the synthesis of various heterocyclic compounds.

Strategic analyses to identify key structural features of antiviral/antimalarial compounds for their binding interactions with 3CLpro, PLpro and RdRp of SARS-CoV-2: molecular docking and dynamic simulation studies.

Severe acute respiratory syndrome coronavirus (SARS-CoV-2), a novel member of the betacoronavirus family is a single-stranded RNA virus that has spread worldwide prompting the World Health Organization to declare a global pandemic. This creates an alarming situation and generates an urgent need to develop innovative therapeutic agents. In this context, an molecular docking and molecular dynamics (MD) simulation study on the existing 58 antiviral and antimalarial compounds was performed on 3CLpro, PLpro and RdRp SARS-CoV-2 proteins.

A Review on Thiocyanation of Indoles.

Background: The thiocyanation of indoles is a direct way for carbon-sulfur bond formation to access 3-thiocyanato-indoles. 3-thiocyanato-indoles exhibit potent biological and pharmacological activities and also serve as building blocks to synthesize many biologically active sulfur-containing indole derivatives.

Objective: The aim of this review is to highlight different approaches for the thiocyanation of indoles focusing on its scope and mechanism.

Structural Exploration of Quinazolin-4(3H)-ones as Anticonvulsants: Rational Design, Synthesis, Pharmacological Evaluation, and Molecular Docking Studies.

Anticonvulsants effective against multiple seizures are of wide interest as antiepileptic drugs, especially if active against pharmaco-resistant seizures. Herein, we synthesized 16 different, rationally designed 2-((6,7-dimethoxy-4-oxo-2-phenylquinazolin-3(4H)-yl)amino)-N-(substituted phenyl)acetamides and screened for anticonvulsant activities through in vivo experiments. Compound 4d emerged as prototype with excellent anti-seizure action in mice against electroshock, chemically induced and pharmaco-resistant 6-Hz seizure models with no symptoms of neurotoxicity and hepatotoxicity (ED  = 23.

Quinazolines: new horizons in anticonvulsant therapy.

The search for novel anticonvulsants with more selectivity and lower toxicity continues to be an area of intensive investigation in medicinal chemistry. The potency and selectivity in the pharmacological response of quinazolines as anticonvulsant have attracted the attention of many researchers to explore this framework for its potential. It is, therefore, topic of interest to study development of new synthetic strategies and their anticonvulsant potential based on the most recent knowledge emerging from the latest research.

Quinazolino-benzothiazoles: fused pharmacophores as anticonvulsant agents.

A series of 6-bromo-2-ethyl-3-(substitutedbenzo[d]thiazol-2-yl)quinazolin-4(3H)-one 3 (a-j) were synthesized using appropriate synthetic route and evaluated experimentally by the Maximal Electro Shock (MES) and the PTZ-induced seizure methods. Among the tested compounds, 3-(benzo[d]thiazol-2-yl)-6-bromo-2-ethylquinazolin-4(3H)-one (3a) has shown significant activity against tonic seizure by the MES model and 6-bromo-2-ethyl-3-(6-methoxybenzo[d]thiazol-2-yl)quinazolin-4(3H)-one (3h) against clonic seizure by PTZ-induced seizure model. Not one of the selected compounds demonstrated any sign of neurotoxicity and hepatotoxicity.