发明名称 |
HETEROBIFUNCTIONAL POLY(ETHYLENE GLYCOL) DERIVATIVES AND METHODS FOR THEIR PREPARATION |
摘要 |
This invention provides a method for preparing, in high purity and high yiel d, heterobifunctional derivatives of poly(ethylene glycol) or related polymers. A chromatographic purification step is not necessary in the method. In accordance with the method of the invention, an intermediate polymer having a formula of W-Poly-OH is provided bearing a removable group W at one terminus . The intermediate polymer W-Poly-OH is first altered by modifying the OH grou p to a first functional group X, followed by the removal of W to generate a second hydroxyl group. The latter hydroxyl group may then be further convert ed to a second functional group Y, thus providing the desired heterobifunctiona l derivative.
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申请公布号 |
CA2386762(A1) |
申请公布日期 |
2001.04.19 |
申请号 |
CA19992386762 |
申请日期 |
1999.10.08 |
申请人 |
SHEARWATER CORPORATION |
发明人 |
KOZLOWSKI, ANTONI;HARRIS, J. MILTON;BENTLEY, MICHAEL DAVID |
分类号 |
A61K47/34;A61K47/48;C08G65/329;(IPC1-7):A61K47/48 |
主分类号 |
A61K47/34 |
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