Catecholamine surrogates useful as .beta..sub.3 agonists

Abstract

Compounds of the formula ##STR1## or pharmaceutically acceptable salts thereof wherein: A is a bond, --(CH.sub.2).sub.n -- or --CH(B)--, where n is an integer of 1 to 3 and B is --CN, --CON(R.sup.9)R.sup.9' or --CO.sub.2 R.sup.7 ; R.sup.1 is lower alkyl, aryl or arylalkyl; R.sup.2 is hydrogen, hydroxy, alkoxy, --CH.sub.2 OH, cyano, --C(O)OR.sup.7, --CO.sub.2 H, --CONH.sub.2, tetrazole, --CH.sub.2 NH.sub.2 or halogen; ##STR2## R.sup.3 is hydrogen, alkyl, heterocycle or R.sup.4 is hydrogen, alkyl or B; R.sup.5, R.sup.5', R.sup.8, R.sup.8' or R.sup.8" are independently hydrogen, alkoxy, lower alkyl, halogen, --OH, --CN, --(CH.sub.2).sub.n NR.sup.6 COR.sup.7, --CON(R.sup.6)R.sup.6', --CON(R.sup.6)OR.sup.6', --CO.sub.2 R.sup.6, --SR.sup.7, --SOR.sup.7, --SO.sub.2 R.sup.7, --N(R.sup.6)SO.sub.2 R.sup.1, --N(R.sup.6)R.sup.6', --NR.sup.6 COR.sup.7, --OCH.sub.2 CON(R.sup.6)R.sup.6', --OCH.sub.2 CO.sub.2 R.sup.7 or aryl; or R.sup.5 and R.sup.5' or R.sup.8 and R.sup.8' may together with the carbon atoms to which they are attached form an aryl or heterocycle; R.sup.6 and R.sup.6' are independently hydrogen or lower alkyl; and R.sup.7 is lower alkyl; R.sup.9 is hydrogen, lower alkyl, alkyl, cycloalkyl, arylalkyl, aryl, heteroaryl; or R.sup.9 and R.sup.9' may together with the nitrogen atom to which they are attached form a heterocycle; with the proviso that when A is a bond or --(CH.sub.2).sub.n and R.sup.3 is hydrogen or unsubstituted alkyl, then R.sup.4 is B or substituted alkyl. These compounds are beta.sub.3 adrenergic receptor agonists and are useful, therefore for example, in the treatment of diabetes, obesity and gastrointestinal diseases.

Dependencies are inferred from the claim text.