Synthesis and structure of novel iodinated N-glycosyl-sulfonamides through Aza-Ferrier reaction of 2-substituted glycals

Glycals as Chiral Synthons in Organic Synthesis of Privileged Molecular Scaffolds

Chirality is a vital characteristic of molecules and crucial for biological functioning. Glycals are unsaturated chiral sugars that contain an enolic double bond within the ring structure and they introduce the chirality in the molecular scaffolds. Since their discovery and synthesis by Fischer and Zach in 1913, they have been used as a flexible chiral synthon for synthesising natural products and biologically significant molecules. An important area of study in organic synthesis involves functionalizing glycals, with particular emphasis on creating novel molecular scaffolds with a common backbone using various topologies. This review discusses recent advancements in synthesizing chiral molecules, emphasizing the innovative use of glycals as chiral synthons, and covers literature from 2020 to the present.

Structure investigation on a novel 2-halo-2,3-unsaturated-N-galactoside, NMR and X-ray diffraction of a monoclinic multidomain crystal

Single crystal X-ray and NMR investigations on multidomain structured N-(4,6-di-O-acetyl-2,3-dideoxy-α-D-threo-hex-2-en-2-iodo-pyranosyl)-methylsulfonamide are reported. This is the first crystallographic diffraction data report related to a 2-halo-2,3-unsaturated galactoside derivative. A complete structural study, including conformations and crystal packing, was performed by analyzing the spectroscopic data in solid state (XRD) and in solution (NMR).