Appeal No. 95-0865 Application 08/08/007,950 b. Claim 25 Claim 25 is rejected under 35 U.S.C. § 103 over Slusarchyk and Searcey. Claim 25 is not a model of clarity due to its use of Z and Z . Nevertheless, we believe claim 25 calls for 1 reacting 6-halo-purine in its tetraalkylammonium salt form with a compound having the formula Z ))X, including, inter alia, 1 cyclobutanes having the formulae: and where: (1) X is a leaving group selected from the group consisting of: - 24 -Page: Previous 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 NextLast modified: November 3, 2007