9-Cyclobutyladenine (4a), cis-and trans-9-[3-(hydr0xymethyl) cyclohutyl] adenine (4b) and 9- [3, 3-bis (hydroxymethyl) cyclobutyl] adenine (4d) were prepared from the corresponding cyclobutylamine derivatives (1a, 1b and 1d). Guanine congeners (9a, cis-and trans-9b and 9d) and carbocyclic oxetanocin G (1', 2'-trans-9f) were also prepared. Carbocyclic oxetanocin A (1', 2'-trans-4f), the preparation of which we have already published, and G ...