Syntheses of spacer-armed carbohydrate components of the Mycobacterium avium serocomplex serovar 8

p-Nitrophenyl glycosides of 3-O-Me-β- d -Glcp-(1 → 3)-α- l -Rhap, α- l -Rhap(1 → 2)-6-deoxy-α- l -Talp, and 3-O-Me-β- d -Glcp-(1 → 3)-α- l -Rhap-(1 → 2)-6-deoxy-α- l -Talp have been prepared, related to Mycobacterium avium. Various glycosylation methods have been used for the formation of the interglycosidic linkages. The p-nitrophenyl derivatives were converted into p-isothiocyanatophenyl glycosides, capable of forming neoglycoproteins. © 1997 Elsevier Science Ltd.