Synthesis and Evaluation of No-Carrier-Added 8-Cyclopentyl-3-(3-[<sup>18</sup>F]fluoropropyl)-1-propylxanthine ([<sup>18</sup>F]CPFPX): A Potent and Selective A<sub>1</sub>-Adenosine Receptor Antagonist for in Vivo Imaging
作者:Marcus H. Holschbach、Ray A. Olsson、Dirk Bier、Walter Wutz、Wiebke Sihver、Manfred Schüller、Bettina Palm、Heinz H. Coenen
DOI:10.1021/jm020905i
日期:2002.11.1
describes the precursor synthesis and the no-carrier-added (nca) radiosynthesis of the new A(1) adenosine receptor (A(1)AR) antagonist [(18)F]8-cyclopentyl-3-(3-fluoropropyl)-1-propylxanthine (CPFPX), 3, with fluorine-18 (half-life = 109.6 min). Nucleophilic radiofluorination of the precursor tosylate 8-cyclopentyl-3-(3-tosyloxypropyl)-7-pivaloyloxymethyl-1-propylxanthine, 2, with nca [(18)F]KF under aminopolyether-mediated
这份报告描述了新的A(1)腺苷受体(A(1)AR)拮抗剂[(18)F] 8-环戊基-3-(3-氟丙基)的前体合成和无载体的(nca)放射合成)-1-丙基黄嘌呤(CPFPX),3,氟18(半衰期= 109.6分钟)。在氨基聚醚介导的条件下,用nca [(18)F] KF对前体甲苯磺酸酯化8-环戊基-3-(3-甲苯磺酰氧基丙基)-7-新戊酰氧基甲基-1-丙基黄嘌呤进行亲核放射性氟化(Kryptofix 2.2.2 / K( 2)CO(3)),然后进行脱保护非常简单,在配制后,放射配体就可以注射了,放射化学产率为45 +/- 7%,放射化学纯度为> 98%,比放射性为> 270 GBq /微摩尔(> 7.2 Ci / micromol)。准备时间平均为55分钟。事实证明,该合成方法可实现高批量生产(约7个)。5 GBq)在常规生产中(n = 120次运行)。对放射性示踪剂进行了体外和体内药理学评