title: Synthesis and evaluation of novel F-18 labeled fluoroarylvaline derivatives: potential PET imaging agents for tumor detection.
abstract: Two F-18 labeled fluoroarylvaline derivatives, methyl 2-(2-[(18)F]fluoro-4-nitrobenzamido)-3-methylbutanoate ([(18)F]1, [(18)F]MFNBMB) and its corresponding acid 2-(2-[(18)F]fluoro-4-nitrobenzamido)-3-methylbutanoic acid ([(18)F]2, [(18)F]FNBMBA), have been designed and synthesized, respectively, by our team. Meanwhile, we research on their biodistributions in mice model bearing S 180 tumor. Furthermore, we also carried out the biological evaluations of 2-[(18)F]fluorodeoxyglucose ([(18)F]FDG) and O-2-[(18)F]fluoroethyl-l-tyrosine (l-[(18)F]FET) in the same model for comparison with our targeting molecules [(18)F]1 and [(18)F]2. Excitingly, the tumor/blood (T/Bl) and tumor/brain (T/Br) ratios were 2.91, 7.06 at 30 min, 3.44, 5.61 at 60 min post injection for [(18)F]1, 2.32, 13.30 for [(18)F]2 at 30 min post injection, which were obviously superior to [(18)F]FDG and l-[(18)F]FET in the same model and demonstrated that [(18)F]1 and [(18)F]2, especially [(18)F]2, were potential PET imaging agents for tumor detection.
authors.affiliation: Key laboratory of Radiopharmaceuticals, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China.
authors.forename: Yali
authors.initials: Y
authors.lastname: Qiao
authors.forename: Yong
authors.initials: Y
authors.lastname: He
authors.forename: Shuting
authors.initials: S
authors.lastname: Zhang
authors.forename: Guixia
authors.initials: G
authors.lastname: Li
authors.forename: Hang
authors.initials: H
authors.lastname: Liu
authors.forename: Jingli
authors.initials: J
authors.lastname: Xu
authors.forename: Xiao
authors.initials: X
authors.lastname: Wang
authors.forename: Chuanmin
authors.initials: C
authors.lastname: Qi
authors.forename: Cheng
authors.initials: C
authors.lastname: Peng
mesh_terms: D000818:Animals; D001549:Benzamides / Q000138:chemical synthesis* / Q000737:chemistry; D002087:Butyrates / Q000138:chemical synthesis* / Q000737:chemistry; D045744:Cell Line, Tumor; D005462:Fluorine Radioisotopes / Q000737:chemistry; D019788:Fluorodeoxyglucose F18; D051379:Mice; D009369:Neoplasms / Q000175:diagnosis*; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals / Q000138:chemical synthesis* / Q000737:chemistry; D014018:Tissue Distribution; D014443:Tyrosine / Q000031:analogs & derivatives
chemical_list: D001549:Benzamides; D002087:Butyrates; D005462:Fluorine Radioisotopes; D019275:Radiopharmaceuticals; C544059:methyl 2-(2-((18)F)fluoro-4-nitrobenzamido)-3-methylbutanoate; D019788:Fluorodeoxyglucose F18; D014443:Tyrosine