Metal- and organic-protected L derivatized with Nε and / or Nα for coupling to biomolecules for highly efficient M (OH2) 3 (CO) 3 + labeling via fac coordination -Histidine

摘要

The present invention relates to novel histidine derivates that can be used for the labeling of biomolecules with radioactive metal tricarbonyls. The new derivatives have a histidine that is derivatized at the Nepsilon and at least protected at the Nalpha and optionally at the Ndelta; or derivatized at the Nalpha and at least protected at the Nalpha and optionally at the Ndelta; or derivatized at the Nepsilon and Nalpha and at least protected at the Nalpha and optionally at the Ndelta; or derivatized at the Nepsilon; or derivatized at the Nalpha; or derivatized at the Nepsilon and Nalpha; or at least protected at the Nalpha and optionally at the Ndelta.