| 摘要 |
A method of preparing conjugates by means of covalent coupling of a polysaccharide selected from heparin, heparin derivatives, at least partially deacerylated dermatan sulphate and dextran sulphate and a solid substance containing primary amino groups, said method comprising the following steps: a) reduction of the saccharide so that its terminal monosaccharide unit is converted to an alditol; b) periodate oxidation of the alditol formed in step a) to the formation of a terminal aldehyde group under cleavage of the monosaccharide unit between two vicinal groups selected from hydroxyl and amino groups; and c) reductive coupling of the alditol via the aldehyde group to the amino group of the solid substrate. |
