Synthesis of Chirally Enriched Pyrazolylpyrimidinone-Based Glycohybrids via Annulation of Glycals with 2-Hydrazineylpyrimidin-4(3 H)-ones

J Org Chem. 2024 Apr 5;89(7):5000-5009. doi: 10.1021/acs.joc.4c00211. Epub 2024 Mar 12.

Abstract

A new strategy for synthesizing chirally enriched pyrazolylpyrimidinone-based glycohybrids has been achieved, employing an annulation approach in ethanol without any additives or catalysts under microwave conditions. The designed compounds were obtained within a short reaction time (5 min). This method offers several advantages, including mild reaction conditions, a green solvent, and a metal-free approach. Furthermore, the protocol demonstrated a broad substrate scope, successfully incorporating various functional groups with stereochemical diversity and furnishing chirally enriched molecules.