the order of potency for several of these analogs was found to be : 5'-n-ethylcarboxamideadenosine greater than 5'-n-cyclopropylcarboxamideadenosine greater than l-pia greater than n6-cyclohexyladenosine greater than 2-cl-adenosine greater than adenosine greater than d-pia .
C0031484
l-pia
C0001443
adenosine