Use of 3-[<sup>18</sup>F]fluoropropanesulfonyl chloride as a prosthetic agent for the radiolabelling of amines: Investigation of precursor molecules, labelling conditions and enzymatic stability of the corresponding sulfonamides
作者:Reik Löser、Steffen Fischer、Achim Hiller、Martin Köckerling、Uta Funke、Aurélie Maisonial、Peter Brust、Jörg Steinbach
DOI:10.3762/bjoc.9.115
日期:——
were accessible in satisfactory yields owing to systematic variation of the reaction conditions. With respect to the application of the (18)F-fluoropropansulfonyl group to the labelling of compounds relevant as imaging agents for positron emission tomography (PET), the stability of N-(4-fluorophenyl)-3-fluoropropanesulfonamide against degradation catalysed by carboxylesterase was investigated and compared
3-[(18)F] 氟丙烷磺酰氯是一种最近提出的用于氟 18 标记的假体剂,是通过 3-[(18)F] 氟丙基硫氰酸酯作为中间体在两步放射合成中制备的。通过各种途径制备了两种基于苯磺酸盐的放射性标记前体。比较 3-硫氰基丙基诺磺酸酯和相应的甲苯磺酸酯对 [(18)F] 氟化物的反应性,证明前者是优越的,标记产率高达 85%。已确定将 3-[(18) F] 氟丙基硫氰酸酯可靠转化为具有自动化潜力的相应磺酰氯的条件。研究了 3-[(18) F] 氟丙烷磺酰氯与八种不同的脂肪族和芳香族胺的反应,并通过与非放射性对应物的比较色谱法确认了所得 (18) F 标记的磺酰胺的身份。即使对于弱亲核胺,如 4-硝基苯胺,由于反应条件的系统变化,所需的放射性标记磺胺也能以令人满意的产率获得。关于 (18)F-氟丙磺酰基在标记与正电子发射断层扫描 (PET) 成像剂相关的化合物中的应用,N-(4-氟苯基)-3-