New myocardial imaging agents: stabilization of radioiodine as a terminal vinyl iodide moiety on tellurium fatty acids
作者:F. F. Knapp、M. M. Goodman、A. P. Callahan、L. A. Ferren、G. W. Kabalka、K. A. R. Sastry
DOI:10.1021/jm00363a014
日期:1983.9
To determine the myocardial uptake and retention properties of radioiodinated tellurium fatty acids, we prepared two new tellurium fatty acids in which iodine-125 has been chemically stabilized by attachment as a trans-vinyl iodide (I-CH = CH-R-Te-R'-COOH) and evaluated them in rats. Fabrication of 18-iodo-13-tellura-17-octadecenoic acid was accomplished by coupling 1,5-diiodo-1-pentene with sodium
为了确定放射性碘化碲脂肪酸的心肌摄取和保留特性,我们制备了两种新的碲脂肪酸,其中碘125已通过附着作为反乙烯基碘而化学稳定(I-CH = CH-R-Te-R '-COOH),并在大鼠中对其进行了评估。通过将1,5-二碘-1-戊烯与12-(甲氧基羰基)-n-十二烷基-1-基碲化钠偶联来完成18-碘-13-碲-十七-十八烯酸的制备。[5-125I] -1,5-二碘-1-戊烯是通过有机硼烷技术制备的,该技术涉及125I +处理5-碘-1-戊-1-基硼酸[I(CH2)3CH = CHB(OH)2 ]。该药物的绝对心脏摄取量中等(60分钟后为1.47-2.52%剂量/克),但心脏/血液比率较低(约2.6:1)。仅发生体内边缘脱碘,因为甲状腺摄取量低(60分钟后剂量为15-18%/ g)。碲在位置13的影响是出乎意料的。为了确定低心脏特异性和低心/血比是否取决于碲的位置,我们制备了具有相同链长的类似物18-