Process for the preparation of sugar epitopes

Details Process for the preparation of sugar epitopes Process for the preparation of sugar epitopes

C - Chemistry, Metallurgy

07

H

C07H 5/06 (2006.01) C07H 3/04 (2006.01) C07H 3/06 (2006.01) C07H 15/04 (2006.01) C07H 17/04 (2006.01) C07H 23/00 (2006.01) C08B 37/00 (2006.01)

Patent

CA 2071050

Abstract The invention relates to a new process for the stereoselective preparation of Gal-.alpha.(1-3)/Gal-.beta.(1-4)/ GlcNac trisaccharides of the formula Image and of .beta.(1-3)-linked oligolactosamines of the formula Image via partially alkylated glycals of the formula Image and other new intermediate products, wherein, depending on the formula, R is H, R'CH2- or allyl, R1 is H, R'CH2-, allyl or R'CO-, R' is H, C1 to C3-alkyl or (un)substituted phenyl, S is a spacer, preferably of the formula -(CH2)n-COOR", R" is alkyl having 1 to 4 C atoms, X is N3 or -NHCOCH3, Y is .beta.-OSiR23 or .alpha.-OC(=NH)CCl3, R2 is C1 to C4-alkyl or phenyl and m and n are integers from 1 to 4 or 4 to 12 respectively.

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