99Tcm标记的N-(邻甲硫基苯基)甘氨酰胺和硫醇混配配合物的制备及生物分布

合成了三齿配位林Ｎ－（邻甲硫基苯基）甘氨酰胺（ＭＴＰＧＡ）。其结构经ＩＲ、ＮＭＲ和ＭＳ等表征予以确认。用配位体交换法制备了＾９９Ｔｃ＾ｍ（Ｌ１,Ｌ３）混配配合物（其中Ｌ１为单齿配位体乙硫醇,Ｌ３为三齿配位体ＭＴＰＧＡ）,确定了标记的最佳条件及标记物的稳定性。实验结果表明,＾９９Ｔｃ＾ｍ（Ｌ１,Ｌ３）的标记率在９０％以上,室温下可以稳定约６ｈ。用＾９９Ｔｃ＾ｍ（Ｌ１,Ｌ３）进行了小鼠生物分布研究。结

SYNTHESIS AND BIODISTRIBUTION OF 99Tcm MIXED LIGAND COMPLEX CONTAINING A TRIDENTATE N(O-METHYLTHIOPHENGL)GLYCINAMIDE AND A MONODENTATE THIOL

A new compound N (O methyl thiophenyl) glycinamide as a ligand is synthesized and charaterized by IR, 1H NMR and MS(FAB). Preparation of 99 Tc m mixed ligand is carried out by ligand exchange reaction. The labeling condition is optimized. Biodistribution of this new 99 Tc m mixed ligand complex in rats shows that it can pass through the blood brain barrier and retain for a certain time in brain.