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    • 44. 发明授权
    • Method for preparing branched functionalized polymers using branched polyol cores
    • 使用支链多元醇芯制备支链官能化聚合物的方法
    • US08568705B2
    • 2013-10-29
    • US11458269
    • 2006-07-18
    • Samuel P. McManusAntoni Kozlowski
    • Samuel P. McManusAntoni Kozlowski
    • A61K31/74
    • A61K47/48061A61K31/74A61K31/765A61K47/60C07D405/14C08G65/329C08G65/34C08G65/48C08G71/04C08L2203/02Y02P20/582
    • A method of preparing a multiarm polymer includes reacting a branched polyol with one or more functionalizing reagents to effect substitution of an ionizable functional group or a protected ionizable functional group, Y, to form a mixture comprising (i) unsubstituted branched polyol containing no Y groups; (ii) a monosubstituted polyol comprising one Y group, and (iii) a multisubstituted polyol (e.g., a disubstituted polyol comprising two Y groups); followed by purifying the mixture to separate the monosubstituted polyol from other species Thereafter, a water-soluble and non-peptidic polymer segment is attached to the monosubstituted branched polyol at the site of at least one of the hydroxyl groups. The invention also provides purified monosubstituted branched polyols and multiarm polymers prepared by the method and polyol precursors for use in the method.
    • 制备多聚合物聚合物的方法包括使支化多元醇与一种或多种官能化试剂反应以实现可离子化官能团或受保护的可离子化官能团Y的取代,以形成包含(i)不含Y基团的未取代的支链多元醇 ; (ii)包含一个Y基团的单取代多元醇,和(iii)多取代多元醇(例如,包含两个Y基团的二取代多元醇); 然后纯化混合物以从其它物质分离单取代的多元醇然后,在至少一个羟基的位置处将水溶性和非肽聚合物链段连接到单取代的支化多元醇上。 本发明还提供了纯化的单取代的支化多元醇和通过该方法制备的多聚合物聚合物和用于该方法的多元醇前体。