发明名称 |
Polysaccharides derivatives with high antithrombotic activity in plasma |
摘要 |
The present invention relates to a process for the preparation of sulphated glycosaminoglycans derived from N-acetylheparosan which comprises: a) N-deacetylation and N-sulphation of the N-acetylheparosan polysaccharide prepared from natural or recombinant bacterial strain, preferably K5 E. coli, b) enzymatic epimerization with the glucuronyl C5-epimerase enzyme, c) partial O-sulphation followed by a partial O-desulphation, d) partial 6-0-sulphation, e) N-sulphation and an intermediate step of controlled depolimerization characterised by the fact that both 0-sulphations (0-sulphation and 60-sulphation) are partial. Furthermore the invention relates to the products obtained according to the process which show a ratio between the anti-Xa activity and anti-Ila activity equal to or higher than 1 and to compositions comprising said products in combination with suitable and pharmaceutically acceptable excipients and/or diluent.
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申请公布号 |
US2007042993(A1) |
申请公布日期 |
2007.02.22 |
申请号 |
US20040557584 |
申请日期 |
2004.07.07 |
申请人 |
MANONI MARCO;SALSINI LIANA;CHINI JACOPO;CIPOLLETTI GIOVANNI |
发明人 |
MANONI MARCO;SALSINI LIANA;CHINI JACOPO;CIPOLLETTI GIOVANNI |
分类号 |
A61K31/727;A61K31/726;C08B37/00;C08B37/08 |
主分类号 |
A61K31/727 |
代理机构 |
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