title: Design, synthesis, and imaging of small amphiphilic rhenium and (99m)technetium tricarbonyl complexes.
abstract: The design, synthesis, radiolabeling, evaluation of stability, and in vivo investigation are presented of three variably charged, novel, short C(8) chain derivatized chelators for the [M(CO)(3)](+) core (M = (99m)Tc or Re). Labeling with [(99m)Tc(CO)(3)](+) showed complex formation in under 1 h reaction time and high stability toward 24 h histidine and cysteine challenges, as well as distinctive log P values for each complex. Distinct localization of small amphiphilic molecules in in vivo systems depends on the charge of the polar moiety and was studied via biodistribution (4 h) and imaging (15 min, 1, 2, and 4 h) in female C57Bl/6 mice.
authors.affiliation: Department of Chemistry, University of British Columbia,Vancouver, British Columbia V6T 1Z1, Canada.
authors.forename: Eszter
authors.initials: E
authors.lastname: Boros
authors.forename: Urs O
authors.initials: UO
authors.lastname: Häfeli
authors.forename: Brian O
authors.initials: BO
authors.lastname: Patrick
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Adam
authors.forename: Chris
authors.initials: C
authors.lastname: Orvig