| 摘要 |
<p>Disclosed are cationic complexes of Tc-99m and ligands having structure (A), wherein: R1 is hydrogen or is selected from the group consisting of C¿1? to C20 alkyl; C3 to C12 cycloalkyl; C7 to C24 aralkyl; C2 to C16 alkyl ethers, thioethers, ketones or esters; C7 to C27 aralkyl ethers; R?2¿ is hydrogen or is a C¿1? to C4 lower alkyl radical selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl isobutyl, sec-butyl and tert-butyl.</p> |
