Abstract Described for the first time is a totalsynthesis of cyclomalthoexaose, in 0.3% overall yield, in 21 steps starting from maltose. Maltose was transformed into allyl O -(2,3,6-tri- O -benzyl-α- d -glucopyranosyl)-(1→4)-2,3,6-tri- O -benzyl-β- d -glucopyranoside ( 5 ) and O -(4- O -acetyl-2,3,6-tri- O -benzyl-α- d -glucopyranosyl)-(1→4)-2,3,6-tri- O -benzyl-β- d -glucopyranosyl fluoride ( 6