Design, synthesis and evaluation of graftable thrombin inhibitors for the preparation of blood-compatible polymer materials
作者:Claudio Salvagnini、Catherine Michaux、Julie Remiche、Johan Wouters、Paulette Charlier、Jacqueline Marchand-Brynaert
DOI:10.1039/b510239a
日期:——
Piperazinyl-amide derivatives of N-α-(3-trifluoromethyl-benzenesulfonyl)-L-arginine (1) were synthesized as graftable thrombin inhibitors. The possible disturbance of biological activity due to a variable spacer-arm fixed on the N-4 piperazinyl position was evaluated in vitro, against human α-thrombin, and in blood coagulation assay. Molecular modelling (in silico analysis) and X-ray diffraction studies of thrombin-inhibitor complexes were also performed. The fixation of bioactive molecules on poly(butylene terephthalate) (PBT) and poly(ethylene terephthalate) (PET) membranes was performed by wet chemistry treatment and evaluated by XPS analysis. Surface grafting of inhibitor 1d improved the membrane hemocompatibility by reducing blood clot formation on the modified surface.
我们合成了 N-α-(3-三氟甲基-苯磺酰基)-L-精氨酸(1)的哌嗪基酰胺衍生物,作为可嫁接的凝血酶抑制剂。对固定在 N-4 哌嗪基位置上的可变间隔臂可能对生物活性造成的干扰进行了体外评估(针对人类 α-凝血酶)和血液凝固试验。此外,还对凝血酶抑制剂复合物进行了分子建模(硅分析)和 X 射线衍射研究。通过湿化学处理将生物活性分子固定在聚对苯二甲酸丁二醇酯(PBT)和聚对苯二甲酸乙二醇酯(PET)膜上,并通过 XPS 分析进行评估。表面接枝抑制剂 1d 可减少改性表面血凝块的形成,从而改善膜的血液相容性。