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@ARTICLE{Hffmann:299527,
      author       = {L. Höffmann and M. Blei and F. Reissig and K. Kopka$^*$
                      and C. Mamat},
      title        = {{P}reparation of {M}acrobicyclic {C}ryptands for
                      {R}adiometal {C}omplexation: {P}reparation of
                      {M}acropa-{B}ased {C}ryptands for {E}fficient {C}omplexation
                      of {R}adiometals.},
      journal      = {Journal of labelled compounds and radiopharmaceuticals},
      volume       = {68},
      number       = {3},
      issn         = {0022-2135},
      address      = {New York, NY [u.a.]},
      publisher    = {Wiley},
      reportid     = {DKFZ-2025-00485},
      pages        = {e4136},
      year         = {2025},
      abstract     = {Macrobicyclic cryptands and especially derivatives with
                      functionalized side arms (picolinate, pyrimidine
                      carboxylate, and bipyridine carboxylate) are able to complex
                      metal ions effectively. In this regard, four new
                      functionalized cryptands were prepared in a convenient
                      two-step synthesis procedure starting from basic compound
                      4,10,16,22,27-pentaoxa-1,7,13,19-tetraazabicyclo[11.11.5]nonacosane
                      and fully characterized. Their complexation behavior was
                      tested via 1H NMR titration with Ba2+, Sc3+, La3+, Lu3+,
                      In3+, and Pb2+ pointing out log K values between 1.4 and
                      4.0. Radiolabeling with selected cations of
                      radiopharmaceutical relevance (131Ba, 225Ac, and 133La) was
                      performed.},
      keywords     = {Radiopharmaceuticals: chemistry / Radiopharmaceuticals:
                      chemical synthesis / NMR titration (Other) / cryptands
                      (Other) / radiolabeling (Other) / stability (Other) /
                      Radiopharmaceuticals (NLM Chemicals)},
      cin          = {DD01},
      ddc          = {610},
      cid          = {I:(DE-He78)DD01-20160331},
      pnm          = {899 - ohne Topic (POF4-899)},
      pid          = {G:(DE-HGF)POF4-899},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:40040466},
      pmc          = {pmc:PMC11880877},
      doi          = {10.1002/jlcr.4136},
      url          = {https://inrepo02.dkfz.de/record/299527},
}