申请人:Satyamurthy Nagichettiar
公开号:US08674101B2
公开(公告)日:2014-03-18
Iodylbenzene derivatives substituted with electron donating as well as electron withdrawing groups on the aromatic ring are used as precursors in aromatic nucleophilic substitution reactions. The iodyl group (IO2) is regiospecifically substituted by nucleophilic fluoride to provide the corresponding fluoroaryl derivatives. No-carrier-added [F-18]fluoride ion derived from anhydrous [F-18](F/Kryptofix, [F-18]CsF or a quaternary ammonium fluoride (e.g., Me4NF, Et4NF, n-Bu4NF, (PhCH2)4NF) exclusively substitutes the iodyl moiety in these derivatives and provides high specific activity F-18 labeled fluoroaryl analogs. Iodyl derivatives of a benzothiazole analog and 6-iodyl-L-dopa derivatives have been synthesized as precursors and have been used in the preparation of no-carrier-added [F-18]fluorobenzothiazole as well as 6-[F-18]fluoro-L-dopa.
取代了电子给予和电子吸引基团的碘苯衍生物可用作芳香族亲核取代反应的前体。亚碘基团(IO2)被亲核性氟离子区域特异性地取代,从而提供相应的氟代芳基衍生物。无载体添加的[F-18]氟离子,可以从无水[F-18](F/Kryptofix,[F-18]CsF或季铵氟化物(例如,Me4NF,Et4NF,n-Bu4NF,(PhCH2)4NF)中获得,它们仅取代这些衍生物中的亚碘基团,并提供高比活度的F-18标记的氟代芳基类似物。苯并噻唑类似物和6-碘-L-多巴衍生物的碘衍生物已合成为前体,并用于制备无载体添加的[F-18]氟代苯并噻唑以及6-[F-18]氟-L-多巴。