| abstract |
Compounds of the formula <CHEM> or pharmaceutically acceptable salts thereof wherein: A is a bond, -(CH2)n- or -CH(B)-, where n is an integer of 1 to 3 and B is -CN, -CON(R<9>)R<9'> or -CO2R<7>; R<1> is lower alkyl, aryl or arylalkyl; R<2> is hydrogen, hydroxy, alkoxy, -CH2OH, cyano, -C(O)OR<7> , -CO2H, -CONH2, tetrazole, -CH2NH2 or halogen; R<3> is hydrogen, alkyl, heterocycle or <CHEM> R<4> is hydrogen, alkyl or B; R<5>, R<5'>, R<8>, R<8'> or R<8''> are independently hydrogen, alkoxy, lower alkyl, halogen, -OH, -CN, -(CH2)nNR<6>COR<7>, -CON(R<6>)R<6'>, -CON(R<6>)OR<6'>, -CO2R<6>, -SR<7>, -SOR<7>, -SO2R<7>, -N(R<6>)SO2R<1>, -N(R<6>)R<6'>, -NR<6>COR<7>, -OCH2CON(R<6>)R<6'> , -OCH2CO2R<7> or aryl; or R<5> and R<5'> or R<8> and R<8'> may together with the carbon atoms to which they are attached form an aryl or heterocycle; R<6> and R<6'> are independently hydrogen or lower alkyl; and R<7> is lower alkyl; R<9> is hydrogen, lower alkyl, alkyl, cycloalkyl, arylalkyl, aryl, heteroaryl; or R<9> and R<9'> may together with the nitrogen atom to which they are attached form a hetocycle; with the proviso that when A is a bond or -(CH2)n and R<3> is hydrogen or unsubstituted alkyl, then R<4> is B or substituted alkyl. These compounds are beta3 adrenergic receptor agonists and are useful, therefore for example, in the treatment of diabetes, obesity and gastrointestinal diseases. |