ANALOGIFREMGANGSMAADE TIL FREMSTILLING AF EN OCTA-HYDRO-1-(OMEGA-MERCAPTOALKANOYL)-1H-INDOL-2-CARBOXYLSYREFORBINDELSE

Octahydro-1-(w-mercaptoalkanoyl)-1H-indole-2-carboxylic acid compounds having the formula wherein R is hydrogen or lower alkyl; R1 is hydrogen, lower alkyl, or benzyl; R2 is hydrogen or R - @- where R3 is lower alkyl, heteroaryl containing 4 to 9 carbon atoms and one or two nitrogen, oxygen or sulfur atoms; phenyl, substituted phenyl having 1 or 2 substituents selected from the group consisting of fluorine, chlorine, bromine, lower alkyl or alkoxy; and n is 0 or 1; wherein lower alkyl and lower alkoxy include straight or branched groups containing 1 to 4 carbon atoms, and pharmaceutically acceptable salts of the compounds when R is hydrogen and when R3 is heteroaryl containing 1 or 2 nitrogen atoms, are disclosed. Also disclosed are substituted acyl compounds of octahydro-1H-indole-2-carboxylic acid having the formula wherein R4 is hydrogen or lower alkyl; R5 is hydrogen, lower alkyl or benzyl; R6 is hydrogen or lower alkyl; Ar is phenyl or phenyl substituted with 1 or 2 substituents selected from the group consisting of fluorine, chlorine, bromine, lower alkyl, lower alkoxy, hydroxy or amino; and m is 0 to 3; wherein lower alkyl and lower alkoxy contain 1 to 4 straight or branched carbon atoms; and the pharmaceutically acceptable salts thereof. The compounds and the salts are useful for treating hypertension.