Synthesis and biological activity of fused furo[2,3-d]pyrimidinone derivatives as analgesic and antitumor agents

Synthesis and Discovery of Schiff Base Bearing Furopyrimidinone for Selective Recognition of Zn2+ and its Applications in Cell Imaging and Detection of Cu2

A simplefuro [2,3-d]pyrimidinone-based Schiff base FPS was synthesized via aza-Wittig reaction and structure elucidation was carried out by spectroscopic studies FT-IR, 1H NMR, and 13C NMR and mass spectrometry. FPS showed weak fluorescence emission in methanol and the selectivity of FPS to different metal ions (Mn²⁺, Ca²⁺, Fe²⁺, Fe³⁺, Mg²⁺, Al³⁺, Ba²⁺, Ag⁺, Co²⁺, Na⁺, K⁺, Cu²⁺, Zn²⁺, Pb²⁺, Bi³⁺) were studied by absorption and fluorescence titration. The results show that FPS has selective fluorescence sensing behavior for Zn²⁺ ions and the limit of detection (LOD) was calculated to be 1.19 × 10^–8 mol/L. Moreover, FPS-Zn²⁺ acts as a metal based highly selective and sensitive new chemosensor for Cu²⁺ ions and the LOD was calculated to be 2.25 × 10^–7 mol/L. In accordance with the results and theoretical calculations, we suspected that the binding mechanisms of FPS to Zn²⁺ and Cu²⁺ were assigned to be the cooperative interaction of Zn²⁺(Cu²⁺)-N.

Recent Developments on the Synthesis and Biological Activities of Fused Pyrimidinone Derivatives

Heterocyclic compounds constitute a unique class of organic compounds endowed with a wide range of synthetic and pharmaceutical applications. Pyrimidinones and their fused analogues have received focused attention in this regard, partly due to their mimicry of nucleobases which consequently forges their interesting medicinal properties. Over the years, the medicinal chemistry research community has experienced an upsurge in articles describing the exploration of these scaffolds to develop effective therapeutic agents. Several biological activities, including antimicrobial, antiviral, anticancer, antidiabetic, anti-inflammatory, anticonvulsive, and antihistaminic, have been well documented. This minireview presents a compendium of recent developments (2017-2020) focused on the synthesis and biological activities of fused pyrimidinones. The goal is to update medicinal chemists on the therapeutic relevance of fused pyrimidinones and the molecular architecture of clinic-worthy drug candidates. A brief account of the structure-activity relationships (SAR) revealed from different biological assays is also discussed.

A facile synthesis of polysubstituted furo[2,3-d]pyrimidinones and 1,2,4-triazole-fused derivatives

In this paper, a series of polysubstituted furo[2,3- d]pyrimidinones, including 1,2,4-triazole-fused derivatives, are synthesized via aza-Wittig reactions of iminophosphoranes, under mild conditions.