among the acyclonucleosides , 2'-nordeoxyguanosine [ 2'ndg , 9- ( 1,3-dihydroxy-2-propoxymethyl ) guanine ] had a 3-fold greater affinity than acyclovir , and 8-amino-2'ndg was the best inhibitor with ki = 2.6 x 10 ( -7 ) m .
C0018321
guanine
C0001367
acyclovir