Synthesis, evaluation, and docking study of adamantyl-1,3,4-oxadiazol hybrid compounds as CaMKIIδ kinase inhibitor

This study revealed a new inhibitor of Ca2+/calmodulin-dependent protein kinase II (CaMKII), a crucial factor in cardiovascular disease and hypertension. The study focuses on the bioactivity compounds that combine adamantane/1,3,4-oxadiazole, potentially inhibiting CaMKIIδ. Various adamantyl-1,3,4-oxadiazole derivatives were synthesized and tested for their efficiency against CaMKIIδ kinase, with 6f being the most potent with an IC50 value of 14.4 μM. Docking studies were carried out to determine the binding processes of these chemicals within the kinase’s active region. These discoveries are an important step toward the development of novel treatments for cardiovascular illnesses and hypertension, with the potential for more precise and efficient therapeutic interventions in the future.

Thermodynamic control synthesis of spiro[oxindole-3,3'-pyrrolines] via 1,4-dipolar cycloaddition utilizing imidazo[1,5-a]quinoline

A series of novel 2-(quinolin-2-yl)-spiro[oxindole-3,3'-pyrrolines] were synthesized by one-pot three-component reaction involving dimethyl acetylenedicarboxylate, 1-phenylimidazo[1,5-a]quinoline and N-alkylisatins in chloroform at ∼60 °C for 24 h. Structures of these new spiro derivatives were deduced from HRMS and NMR spectral data. A plausible mechanism for the observed thermodynamic control pathway is presented herewith. Interestingly, the spiro adduct, derived from 5-chloro-1-methylisatin, exhibited excellent antiproliferative activity on MCF7, A549 and Hela human cell lines (IC₅₀ ≃ 7 μM).