Ex parte SINGH et al. - Page 24




          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  Next 

Last modified: November 3, 2007