R. Volpini et al., Synthetic procedure for the preparation of novel potent and selective A(3)adenosine receptor radioligands, NUCLEOS NUC, 20(4-7), 2001, pp. 775-779
2-Phenylethynyladenosine and its N-6-methyl derivative were synthesized and
evaluated in binding assays at human adenosine receptors stably transfecte
d on CHO cells. Results showed that the N-6-methyl-2-phenylethynyladenosine
is endowed with very high affinity and selectivity at A(3) receptor subtyp
e. Hence, an alternative procedure for the synthesis of tritiated N-6-methy
l-2-phenylethynyladenosine was set up to introduce tritiated methylamine in
the final step.