DSPE PEG hydroxyl, DSPE-PEG-OH

Use of Charged PEG and Dextran Derivatives for Biomolecule Partitioning

(PEG)-dextran systems, PEG has been used as the carrier of ion charge (1 ). This molecule has two functional groups-the two terminal hydroxyl groups-that can be used for introducing the charged elements. number of ways to synthesize such derivatives

Angiogenic Vessel-Targeting DDS by Liposomalized Oligopeptides

of PEGylated liposomes, we synthesized a novel lipid derivative of the peptide, distearoylphosphatidylethanolamine–polyethyleneglycol–APRPG (DSPE–PEG–APRPG). The lipid derivative of APRPG peptide is expected to be readily incorporated into liposomal membrane

环肽的固相合成策略！！！！

列的反应形成目标线性肽链，再脱掉保护基团，利用合适的缩合试剂使肽链形成目标环肽，最后用化学试剂（eg.TFA）将锚定的化学键去除即得到目标产物。 George Barany等[16]人成功的利用这种固相合成技术，将一种新型的半光氨酸衍生物引入合成策略，合成了简单环肽(Cys-Thr-Abu-Gly-Gly-Ala-Arg-Pro-Asp-Phe)，产率大幅度提高。并分别在PEGA，CLEAR，PEG-PS树脂上进行了分别实验，均得到了较高的产率。其合成步骤是首先Fmoc-Asp-Oal的侧链锚定