申请人:Culbertson Sean M.
公开号:US20110230618A1
公开(公告)日:2011-09-22
Provided herein are polymeric α-hydroxy aldehyde or α-hydroxy ketone reagents which can be conjugated to amine-containing compounds to form stable conjugates in a single-step reaction. In selected embodiments, the polymeric reagent itself incorporates an internal proton-abstracting (basic) functional group, to promote more efficient reaction. The substituent is appropriately situated, via a linker if necessary, to position the group for proton abstraction, preferably providing a 4- or 5-bond spacing between the abstracting atom and the hydrogen atom on the α-carbon. Also provided are methods of using the reagents and stable, solubilized conjugates of the reagents with biologically active compounds. In preferred embodiments, the polymeric component of the reagent or conjugate is a polyethylene glycol.
本文提供了聚合物α-羟基醛或α-羟基酮试剂,可以与含胺化合物共轭,在单步反应中形成稳定的共轭物。在选定的实施例中,聚合物试剂本身包含内部质子抽取(碱性)功能基团,以促进更有效的反应。通过连接剂必要时适当地定位取代基,以定位功能基团进行质子抽取,最好在α-碳上的氢原子和抽取原子之间提供4或5键间隔。还提供使用试剂的方法以及与生物活性化合物稳定、可溶化的共轭物。在优选实施例中,试剂或共轭物的聚合物组分是聚乙二醇。