Regioselective enzymatic acylation of N-acetylhexosamines

An update of biocatalytic selective acylation and deacylation of monosaccharides

PAMs synthesis requires highly selective reactions, provided by hydrolases. This review updates research on enzymatic acylation and deacylation of monosaccharides, focusing on synthetic useful PAMs and drug-monosaccharide conjugates involving PAMs.

New chemistry with old functional groups: on the reaction of isonitriles with carboxylic acids--a route to various amide types

Thermolysis of isonitriles with carboxylic acids provides, in one step, N-formyl imides (see, for example, 8 + 19 --> 21). The resultant N-formyl group can be converted to N-H, NCH2OH, or NCH3. This chemistry allows for a new route for synthesizing beta-N (asparagine)-linked glycosyl amino acids.