非离子型L-赖氨酸长链酯-双EDTA酰胺钆配合物的合成与弛豫效能 |
Synthesis and Relaxivity of Neutral Dimeric Gd(Ⅲ) Complexes Derived from L-Lysine with Long Chain Alkyl Esters |
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摘要: |
关键词: 非离子造影剂 L-赖氨酸长链烷基酯 双EDTA酰胺 双核钆配合物 弛豫效能 |
基金项目: |
Abstract: Four novel ester-amino ligands were synthesized by bis-acylation of octadecanyl, hexadecanyl, tetradecanyl and dedecanyl L-lysinate with ethylenediaminetetraacetic acid mono-anhydride (EDTA-MA), respectively. The corresponding neutral dimeric Gd(Ⅲ) complexes were gained by reacting these ligands with GdCl3·6H2O. All ligands and complexes were characterized by FTIR, 1H NMR and elemental analysis. The longitunal relaxation time (T1) was measured, and their stability were investigated by competition with Ca2+ and EDTA. The results indicate that the relaxivity of these netral binuclear Gd(Ⅲ) complexes are higher than that of Gd-DTPA. |
Keywords: neutral contrast agent long chain alkanyl L-lysinate bis-EDTA amide dimeric gadolinium complex relaxivity |
投稿时间:2004-12-01 修订日期:2005-04-22 |
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周锦兰,万福贤,俞开潮,丁尚武,杨年华,叶朝辉.非离子型L-赖氨酸长链酯-双EDTA酰胺钆配合物的合成与弛豫效能[J].无机化学学报,2005,21(8):1237-1241. |
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