Process of selectively blocking amino groups

Details Process of selectively blocking amino groups Process of selectively blocking amino groups

C - Chemistry, Metallurgy

07

H

260/230

C07H 15/20 (2006.01) C07H 15/222 (2006.01) C07H 15/238 (2006.01) C07H 23/00 (2006.01)

Patent

CA 1265130

ABSTRACT OF THE DISCLOSURE Selective blocking of some amino groups in a polyamino- organic compound having at least one pair of available neighboring hydroxyl and amino groups is effected by first preparing in situ transition metal salt complexes of avail- able neighboring amino and hydroxyl group pairs in said polyamino-organic compound, followed by introduction of blocking groups of the non-complexed amino groups and, finally removing the transition metal cations from the selectively N-blocked polyamino-organic compound complex to obtain a polyamino-organic compound having selectively blocked amino groups; the selective blocking has application in chemical transformations of polyamino compounds, especially carbohydrates and aminocyclitol-aminoglycsides to obtain good yields.

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