Ex parte WELCH - Page 9




          Appeal No. 1997-1816                                                        
          Application No. 08/178,269                                                  


                                      APPENDIX                                        

          1.   A compound of the formula:                                             

















                                         (I)                                          

          and the pharmaceutically-acceptable salts thereof; wherein R ,              
                                                                      1               
          R  and R  are each selected from the group consisting of2     3                                                                    
          hydrogen, alkyl having 1 to 6 carbons, phenyl and substituted               
          phenyl, wherein the substituent on said substituted phenyl is               
          selected from the group consisting of hydroxy, alkyl having 1               
          to 4 carbons, chloro, bromo, fluoro, trifluoromethyl, amino,                
          nitro and alkoxy having 1 to 4 carbons;                                     


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