Patent number: 4636560
Abstract: Analgesic and hypotensive activity is exhibited by compounds having the formula ##STR1## and pharmaceutically acceptable salts thereof, wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl, carboxyalkyl, halo substituted alkyl, hydroxyalkyl, aminoalkyl, mercaptoalkyl, alkylthioalkyl, (cycloalkyl)alkyl, (heteroaryl)alkyl, arylalkyl, carbamoylalkyl, guanidinylalkyl, or heteroaryl;R.sub.3 is hydroxy, alkoxy, (substituted alkyl)oxy, arylalkoxy, (heteroaryl)alkoxy, or --NY.sub.1 Y.sub.2, wherein Y.sub.1 and Y.sub.2 are each independently hydrogen, alkyl, aryl, or arylalkyl, or Y.sub.1 is hydrogen and Y.sub.2 is substituted alkyl or (heteroaryl)alkyl;A.sub.1 is glycyl, alanyl, leucyl, phenylalanyl, arginyl, sarcosyl, seryl, asparagyl, lysyl, glutamyl, histidyl, tryptophyl, cysteinyl, methionyl, threonyl, tyrosyl, leucyl, valyl, aspartyl, prolyl, norleucyl, norvalyl, or ##STR2## wherein n.sub.6 is an integer of 2 to 15; A.sub.2, A.sub.3, A.sub.4 and A.sub.
Type:
Grant
Filed:
November 16, 1984
Date of Patent:
January 13, 1987
Assignee:
E. R. Squibb & Sons, Inc.
Inventors:
Jollie D. Godfrey, Jr., Eric M. Gordon, Norma G. Delaney