Synthesis andin Vitro Degradation of Testosterone-Lipid Conjugates
作者:Gerhard K. E. Scriba
DOI:10.1002/ardp.19953280313
日期:——
Testosterone‐lipid conjugates were obtained by covalent binding of the drug to 1,3‐dipalmitoylglycerol via succinic acid to 4‐(1,3‐dipalmitoyl‐2‐glyceryl)butyric acid and to 3‐palmitoyloxy‐2‐palmitoyloxymethylpropionic acid. In contrast to the corresponding bis‐deacyl derivatives, the lipids were not significantly hydrolyzed in aqueous buffers and in plasma. Incubation with pancreatic lipase yielded
Hydroxyapatite-targeting multiarm polymers and conjugates made therefrom
申请人:Nektar Therapeutics
公开号:US09173947B2
公开(公告)日:2015-11-03
The present invention provides, among other things, polymeric reagents suitable for reaction with biologically active agents to form conjugates, the polymeric reagents comprising one or more polymer chains and a plurality of hydroxyapatite-targeting moieties, and optionally the reagents include one or more degradable linkages that serve to divide the polymer chains into polymer segments having a molecular weight suitable for renal clearance.