Ex Parte Zhang et al - Page 6



           Appeal No. 2003-0061                                                                     
           Application No. 09/611,109                                                               

                                             APPENDIX                                               
           18.  A process for producing a compound of the formula (I):                              







           wherein:                                                                                 
                   Ar  is selected from the group consisting of phenyl,1                                                                              
           pyridine, pyridone, pyrrole, pyrrolidine, pyrazole, imidazole,                           
           oxazole, thiazole, furan and thiophene; wherein Ar  is optionally1                             
           substituted by one or more R , R  or R ;1  2       3                                            

                   Ar  is:2                                                                              

           phenyl, naphthyl, quinoline, isoquinoline, tetrahydronaphthyl,                           
           tetrahydroquinoline, tetrahydroisoquinoline, benzimidazole,                              











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