SiFA Azide: A New Building Block for PET Imaging Using Click Chemistry
作者:Lutz Tietze、Kianga Schmuck
DOI:10.1055/s-0030-1260942
日期:2011.7
We present a new highly potent buildingblock for PETimaging based on silicon fluoride acceptors (SiFA) which can easily be coupled to bioactive compounds by means of click chemistry. Owing to a remarkable chemoselectivity, short reaction times, and high yields the labeling reactions thoroughly meet the stringent demands for PET investigations.
我们提出了一种基于氟化硅受体 (SiFA) 的新型高效 PET 成像构建模块,它可以通过点击化学轻松地与生物活性化合物偶联。由于显着的化学选择性、反应时间短和产率高,标记反应完全满足 PET 研究的严格要求。
[EN] CANCER DIAGNOSTIC IMAGING AGENTS<br/>[FR] AGENTS D'IMAGERIE POUR LE DIAGNOSTIC DU CANCER
申请人:TECHNISCHE UNIVERSITÄT MÜNCHEN
公开号:WO2020157184A1
公开(公告)日:2020-08-06
The present invention relates to a ligand-SIFA-chelator conjugate, comprising, within a single molecule three separate moieties: (a) one or more ligands which are capable of binding to PSMA, (b) a silicon-fluoride acceptor (SIFA) moiety which comprises a covalent bond between a silicon atom and a fluorine atom, and (c) one or more chelating groups, containing a chelated nonradioactive cation.
N-(4-(di-tert-butyl[18F]fluorosilyl)benzyl)-2-hydroxy-N,N-dimethylethylammonium bromide ([18F]SiFAN+Br−): A novel lead compound for the development of hydrophilic SiFA-based prosthetic groups for 18F-labeling
(termed SiFA compounds). Here, we wish to report the labeling of the first charged SiFA molecule N-(4-(di-tert-butylfluorosilyl)benzyl)-2-hydroxy-N,N-dimethylethylammonium bromide (SiFAN+Br−) serving as a lead compound in the development of SiFA-based prosthetic groups of reduced lipophilicity for biomolecule labeling. Mild conditions for synthesis of [18F]SiFAN+Br− and an easy purification procedure
Synthesis of 3-chloro-6-((4-(di-tert-butyl[<sup>18</sup>F]fluorosilyl)-benzyl)oxy)-1,2,4,5-tetrazine ([<sup>18</sup>F]SiFA-OTz) for rapid tetrazine-based<sup>18</sup>F-radiolabeling
作者:Jun Zhu、Stephen Li、Carmen Wängler、Björn Wängler、R. Bruce Lennox、Ralf Schirrmacher
DOI:10.1039/c5cc03623b
日期:——
[18F]-SiFA-OTz was synthesized within 25 min with a radiochemical yield of 78 ± 5% and can quantitatively react with strained dienophiles.
es, p‐(tBu2FSi)C6H4X (X=functional group), have been made available and broaden the spectrum of silicon‐based 18F acceptors (SiFAs) for potential PET applications. For example, the [18F]maleimido derivative 1 has been employed for the synthesis of [18F]1‐ labeled rat serum albumin (RSA), the applicability of which for PET has been verified by in vivo experiments.
广谱:新型对位官能化的芳基-二叔丁基氟硅烷p-(t Bu 2 FSi)C 6 H 4 X(X =官能团)已经面世,并拓宽了硅基18 F受体的范围(SiFA)用于潜在的PET应用。例如,[ 18 F]马来酰亚胺衍生物1已用于[ 18 F] 1-标记的大鼠血清白蛋白(RSA)的合成,其在PET中的适用性已通过体内实验得到验证。