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2-Amino-2-deoxy-cyclomaltoheptaose was prepared from beta-cyclodextrin perbenzoate [heptakis(2,3,6-tri-O-benzoyl)cyclomaltoheptaose] by a series of reactions including selective de-O-benzoylation at C-2 of one of the perbenzoylated D-glucopyranosyl moieties, oxidation to the 2-ulose derivative, oxime formation, and reduction to the 2-amino-2-deoxy-D-glucose moiety. This compound and 6-amino-6-deoxycyclomaltoheptaose accessible from beta-cyclodextrin through the known procedure were sulfated to give polysulfated aminocyclomaltoheptaose derivatives (3, 5). Employing beta-cyclodextrin polysulfate as a reference compound, the synergistic effects of 3 and 5 for cortexolone or angiogenesis inhibitory activity were examined by rabbit-corneal micropocket assay system. In contrast to the significant anti-angiogenesis activity of the beta-cyclodextrin polysulfate-cortexolone pair, neither 3 nor 5 showed any cooperative activity with cortexolone in the inhibition of basic FGF-induced angiogenesis.
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