RADIOACTIVE LIGANDS FOR CARDIAC BETA1 ADRENORECEPTOR FOR IMAGING CONGESTIVE HEART FAILURE

摘要

Novel β1 adrenoreceptor ligands that find use as imaging agents within nuclear medicine applications (e.g., PET imaging and SPECT imaging) are provided. Methods of imaging, including methods of imaging congestive heart failure, are also provided. The novel compounds may exhibit high affinity and selectivity, minimal metabolism, minimal non-specific binding and have a favorable log P value ( 0). In some instances, β1-AR selective ligands are conjugated to an imaging moiety in such a way that it does not impact the antagonist affinity and their use. In other instances, the conjugation may be directly to the antagonist at several sites that will not impact affinity. In further instances, the conjugation may be by means of a linking group, which can be used to alter the pharmacokinetics and clearance of the complex.