Synthesis of blockwise alkylated (1→4) linked trisaccharides as surfactants: influence of configuration of anomeric position on their surface activities

► Blockwise alkylated trisaccharide derivatives were synthesized. ► Their surface tensions at air/water interface were evaluated. ► The mixing effect of α- and β-glycosides on surface activities was also investigated. ► The surface tensions depended on their chemical structure. ► The surface activities were almost equal to those of commonly used surfactants.