申请人:SHECHTER Yoram
公开号:US20100041867A1
公开(公告)日:2010-02-18
Reversible pegylated drugs are provided by derivatization of free functional groups of the drug selected from amino, hydroxyl, mercapto, phosphate and/or carboxyl with groups sensitive to mild basic conditions such as 9-fluorenylmethoxycarbonyl (Fmoc) or 2-sulfo-9-fluorenylmethoxycarbonyl (FMS), to which group a PEG moiety is attached. In these pegylated drugs, the PEG moiety and the drug residue are not linked directly to each other, but rather both residues are linked to different positions of the scaffold Fmoc or FMS structure that is highly sensitive to bases and is removable under physiological conditions. The drugs are preferably drugs containing an amino group, most preferably peptides and proteins of low or medium molecular weight. Similar molecules are provided wherein a protein carrier or another polymer carrier replaces the PEG moiety.
可逆的聚乙二醇化药物是通过将所选药物中的自由官能团(氨基、羟基、巯基、磷酸酯和/或羧基)衍生化为对弱碱性条件敏感的基团(例如9-芴甲氧羰基(Fmoc)或2-磺酸基-9-芴甲氧羰基(FMS)),然后将PEG基团连接到该基团上而得到的。在这些聚乙二醇化药物中,PEG基团和药物残基并非直接连接在一起,而是两个残基连接在高度敏感于碱性条件并可在生理条件下去除的Fmoc或FMS结构的不同位置上。这些药物最好是含有氨基团的药物,尤其是低分子量或中分子量的肽和蛋白质。类似的分子也可以用蛋白质载体或其他聚合物载体代替PEG基团。