Highly active and selective anticoagulants: D-Phe-Pro-Arg-H, a free tripeptide aldehyde prone to spontaneous inactivation, and its stable N-methyl derivative, D-MePhe-Pro-Arg-H
作者:Sandor Bajusz、Erzsebet Szell、Daniel Bagdy、Eva Barabas、Gyula Horvath、Marianne Dioszegi、Zsuzsa Fittler、Gabriella Szabo、Attila Juhasz
DOI:10.1021/jm00168a030
日期:1990.6
D-Phe-Pro-Arg-H sulfate (GYKI-14166) is a highly active and selective inhibitor of thrombin both in vitro and in vivo. Recent studies on the stability of D-Phe-Pro-Arg-H in neutral aqueous solution at higher temperature have revealed that it is transformed into inactive 5,6,8,9,10,10a-hexahydro-2-(3'- guanidinopropyl)-5-benzyl-6-oxo- imidazo[1,2-a]pyrrolo[2,1-c]pyrazine. No such inactivation could
D-Phe-Pro-Arg-H硫酸盐(GYKI-14166)在体外和体内都是凝血酶的高活性和选择性抑制剂。D-Phe-Pro-Arg-H在中性水溶液中在较高温度下的稳定性的最新研究表明,它已转化为非活性的5,6,8,9,10,10a-hexahydro-2-(3'-胍基丙基)-5-苄基-6-氧代咪唑并[1,2-a]吡咯并[2,1-c]吡嗪。用Boc-D-Phe-Pro-Arg-H(GYKI-14451)不能观察到这种失活,但该化合物的特异性远低于游离肽,因为它能很好地抑制凝血酶和纤溶酶。假设上述游离三肽醛的转化只能由伯氨基末端引发,则制备了D-Phe-Pro-Arg-H的N-烷基衍生物。在新的类似物中