Method for preparing branched functionalised polymers using branched polyol cores
申请人:Nektar Therapeutics
公开号:EP2412744A2
公开(公告)日:2012-02-01
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.
一种制备多臂聚合物的方法包括将支链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,从而形成一种混合物,该混合物包括:(i) 不含 Y 基团的未取代支链多元醇;(ii) 包含一个 Y 基团的单取代多元醇;(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,在至少一个羟基的位置将水溶性非肽聚合物段连接到单取代支化多元醇上。本发明还提供了通过该方法制备的纯化的单取代支链多元醇和多臂聚合物,以及用于该方法的多元醇前体。
Biodegradable dendritic structure, methods and uses thereof
申请人:INEB—INSTITUTO NACIONAL DE ENGENHARIA BIOMEDICA
公开号:US10858484B2
公开(公告)日:2020-12-08
The present disclosure relates to biodegradable and biocompatible dendritic repeating unit/scaffold (bRU), to a method of synthesis of biodegradable and biocompatible dendritic repeating unit/scaffold (bRU) and to the biomedical applications of biodegradable and biocompatible dendritic repeating unit/scaffold (bRU). This bRU is useful as scaffold to synthesize fully biodegradable dendrimers and/or “mix” or “hybrid” biodegradable dendrimers, presenting a biodegradable shell and a hydrolytically stable/non-degradable core of already existing dendritic systems, in particular it relates to a Biodegradable dendritic structure of formula (I).