| 摘要 |
Provided are active esters of carboxy polysaccharides and semisynthetic derivatives of carboxy polysaccharides, wherein all or part of the carboxy groups thereof are esterified with an aromatic alcohol, a substituted aromatic alcohol, an aromatic heterocyclic alcohol, a substituted aromatic heterocyclic alcohol, an N-hydroxylamine, or a combination thereof. Also provided is a process for producing such active esters. These active esters can be used for the preparation of modifi ed carboxy polysaccharides or modified semisynthetic derivatives of such carboxy polysaccharides, in the form of esters, thioesters, or amide s. Such active esters, modified polysaccharides, and modified semisynthetic derivatives of carboxy polysaccharides can be used in the biomedical and pharmaceutical fields to prepare, for example, cosmetic articles, health care articles, surgical articles, and diagnostic kits.
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