A fast, simple, and reproducible automated synthesis of [18F]FPyKYNE-c(RGDyK) for αvβ3 receptor positron emission tomography imaging
作者:Ana C. Valdivia、Miriam Estrada、Tayebeh Hadizad、Duncan J. Stewart、Rob S. Beanlands、Jean N. DaSilva
DOI:10.1002/jlcr.1948
日期:2012.2
[18 F]FPyKYNE-c(RGDyK) was successfully synthesized by the Cu(I) catalyzed Huisgen 1,3-dipolar cycloaddition of alkynes to azides using [18 F]FPyKYNE as a prosthetic group in an overall radiochemical yield of 12%–18% (decay-corrected) and >99.5% chemical and radiochemical purities in 125 min including quality control. This simple, fully automated two-step, two-reactor approach consists of a quick and convenient purification of the prosthetic group using silica gel cartridges and its subsequent use for the labeling of the azido-c(RGDyK) peptide via click chemistry.
[18F]FPyKYNE-c(RGDyK)由Cu(I)催化Huisgen 1,3-双极性环加成反应成功合成,其中炔烃以[18F]FPyKYNE作为辅助基团与叠氮化物反应,总放射化学收率为12%–18%(衰减校正),化学纯度和放射化学纯度均大于99.5%,整个过程(包括质量控制)耗时125分钟。这种简单、全自动的两步两反应器方法包括使用硅胶柱快速、方便地纯化辅助基团,以及随后通过点击化学将叠氮化物-c(RGDyK)肽进行标记。