Biomolecules where fatty acids are directly bound to a saccharide backbone, thus forming structures similar to glycerolipids or glycerophospholipids, with saccharide substituting for the glycerol.
Examples: lipid X (diacylaminosugar), Kdo2LipidA (acylaminosugar glycan).
Source:
PAC, 2018, 90, 1121. 'Terminology of bioanalytical methods (IUPAC Recommendations 2018)' on page 1181 (https://doi.org/10.1515/pac-2016-1120)