Copper-Free Click for PET: Rapid 1,3-Dipolar Cycloadditions with a Fluorine-18 Cyclooctyne
作者:Richard D. Carpenter、Sven H. Hausner、Julie L. Sutcliffe
DOI:10.1021/ml200187j
日期:2011.12.8
evaluated in a copper-free click reaction have yet to be explored. This report describes the conversion of a bifunctional azadibenzocyclooctyne (ADIBO) amine to the (18)F-labeled cyclooctyne 4, the subsequent fast copper-free 1,3-dipolar cycloaddition reaction with alkyl azides at 37 degrees C (>70% radiochemical conversion in 30 min), and biological evaluations (serum stability of >95% at 2 h). These
涉及叠氮化物和环辛炔的应变促进的咔哒1,3-偶极环加成反应用于合成三唑,具有能够通过无铜化学方法在生物环境中进行的优势。虽然已经报道了与光学染料和放射性金属缀合物缀合的应变试剂,但尚未探索用氟18((18)F)标记并在无铜点击反应中进行放射化学评估的环辛炔试剂。该报告描述了双官能氮杂二苯并环辛炔(ADIBO)胺向(18)F标记的环辛炔4的转化,随后在37°C与烷基叠氮化物的快速无铜1,3-偶极环加成反应(> 70%的放射化学转化率30分钟内)和生物学评估(2 h时血清稳定性> 95%)。