Zusammenfassung
A new series of 2-aralkynyl-N(6)-methyl-MECAs 10-13 were synthesized
and evaluated in radioligand binding studies and in a new Eu-GTP
functional assay that provides a powerful alternative to radioisotope
use. The new compounds possess high affinity and selectivity for
the AA(3)R with N(6)-methyl-2-phenylethynylMECA (10) showing a subnanomolar
affinity and about 100000-fold selectivity vs AA(1)R and AA(2A)R.
Furthermore, the new nucleosides showed to be full agonists, the
N(6)-methyl-2-(2-pyridinyl)ethynylMECA (13) being the most potent
in the series.
Nutzer