six amine , amino acid and peptide derivatives derived from 1,3-dipropyl-8- ( p-carboxymethylphenyl ) xanthine , a functionalized congener of 1,3-dipropyl-8-phenylxanthine , have been investigated as antagonists at a2 adenosine receptors stimulatory to adenylate cyclase in membranes from rat pheochromocytoma pc 12 cells and human platelets and at a1 adenosine receptors inhibitory to adenylate cyclase from rat fat cells .
C0001471
adenosine receptors
C0007603
membranes