Synthesis and radioreceptor binding activity of N-0437, a new, extremely potent and selective D2 dopamine receptor agonist.

The synthesis of a new, potent and selective D2 dopamine receptor agonist, N-0437, of the 2-aminotetralin group is described. The results of a radioreceptor binding assay using a homogenate of porcine anterior pituitary as a tissue source for D2 dopamine receptors and 3H-spiperone as radioligand demonstrate that this compound is one of the most potent compounds so far evaluated in this test system.