Recent Advances in Diversity-Oriented Synthesis of N-containing Organic Molecules Through Carbodiimide-based Reactions.

Carbodiimides (R-N=C=N-R) are well-known intermediates for the preparation of a variety of N-containing compounds, including heterocycles and amide linkages. Be-cause of their high reactivity and easy availability, carbodiimides have been broadly used as building blocks in the synthesis of structurally complex and diverse heterocyclic com-pounds in multi-component reactions (MCRs). Recent advances in diversity-oriented syn-thesis with carbodiimide-based MCRs are discussed in this minireview and are classified into different sections based on the key transformation involved in the reactions, such as heteroannulation and nucleophilic addition reactions which containing metal-catalyzed re-actions, multi-component reactions, and catalyst-free reactions subsections.

Transition metal-catalyzed cross-coupling reactions of -aryl-2-aminopyridines.

Due to the presence of the pyridyl directing group, -aryl-2-aminopyridines can quickly form stable complexes with metals, leading to cyclization and functionalization reactions. A large number of N-heterocycles and nitrogen-based molecules can be easily constructed this direct and atom-economical cross-coupling strategy. In this review, we have highlighted the transformations of -aryl-2-aminopyridines in the presence of various transition metal catalysts, such as palladium, rhodium, iridium, ruthenium, cobalt and copper.

Cinnamic acid conjugated with triazole acetamides as anti-Alzheimer and anti-melanogenesis candidates: an in vitro and in silico study.

In this study, new cinnamic acid linked to triazole acetamide derivatives was synthesized and evaluated for anti-Alzheimer and anti-melanogenesis activities. The structural elucidation of all analogs was performed using different analytical techniques, including H-NMR, C-NMR, mass spectrometry, and IR spectroscopy. The synthesized compounds were assessed in vitro for their inhibitory activities against acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and tyrosinase enzymes.

New benzimidazole-indole-amide derivatives as potent α-glucosidase and acetylcholinesterase inhibitors.

New derivatives 6a-m with benzimidazole-indole-amide scaffold were developed, synthesized, and assessed for potential inhibitory effects on α-glucosidase and acetylcholinesterase (AChE). These compounds were synthesized by various amine derivatives. With the exception of two compounds, the α-glucosidase inhibitory activities of the title derivatives were more than that of the positive control acarbose.

Hypoglycemic agents and bone health; an umbrella systematic review of the clinical trials' meta-analysis studies.

Background: No clear consensus exists regarding the safest anti-diabetic drugs with the least adverse events on bone health. This umbrella systematic review therefore aims to assess the published meta-analysis studies of randomized controlled trials (RCTs) conducted in this field.

Methods: All relevant meta-analysis studies of RCTs assessing the effects of anti-diabetic agents on bone health in patients with diabetes mellitus (DM) were collected in line with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA).