Synthesis of new 2-phosphono-α-d-glycoside derivatives by stereoselective oxa-Michael addition to a d-galacto derived enone

Versatile applications of 3-OxoGlycals: A review

3-Oxoglycals are versatile building blocks with extensive applications in glycochemistry, organic, and bio-organic sciences. They serve as powerful synthons, enabling the development of diverse organic structures. This review highlights the utility of easily obtainable 3-oxoglycals as fundamental building blocks for synthesizing various compounds, including rare sugars, N-inserted compounds, fused heterocycles, medium ring compounds, polycyclic molecules, cycloadducts, and axially chiral molecules. Some of these compounds exhibit significant biological activities, while others possess valuable photophysical properties. The simplicity of these reactions, using readily available starting materials under favorable conditions, makes 3-oxoglycals a valuable tool for creating novel molecules, benefiting the scientific community in various fields.

Novel regio- and stereoselective phosphonyl radical addition to glycals promoted by Mn(ii)–air: syntheses of 1,2-dideoxy 2-C-diphenylphosphinylglycopyranosides

The novel Mn(ii)–air promoted radical reaction of diphenylphosphine oxide with various glycals in excellent regio- and stereoselectivities generated 1,2-dideoxy-2-C-diphenylphosphinylglycopyranosides.

Carbohydrate-2-deoxy-2-phosphonates: simple synthesis and Horner-Emmons reaction

Phosphorus meets carbohydrates: Dimethyl phosphite reacts with ceric(IV) ammonium nitrate (CAN) to give phosphonyl radicals that add to glycals 1. The derivatives 2 were isolated in high yields and during a subsequent Horner-Emmons reaction underwent an interesting elimination to give 3,6-dihydro-2H-pyrans 3. The short sequence with simple precursors is applicable to the transformation of hexoses, pentoses, and disaccharides. Bn = benzyl.