Claims for Patent: 3,839,315

Summary for Patent: 3,839,315

Title:	NOVEL PEPTIDES HAVING CHOLECYSTOKININ ACTIVITY AND INTERMEDIATES THEREFOR
Abstract:	Novel peptide amides of the general formula R-Met-Gly-Trp-Met-Asp-Phe-NH.sub.2 wherein R represents L-aspartyl-O-sulfate-L-tyrosyl, L-aspartyl-L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl, or isoleucyl-L-seryl-L-aspartyl-L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl, and intermediates in the production thereof. The peptide amides of this invention as well as the pharmaceutically acceptable salts thereof have been found to possess cholecystokinin activity.
Inventor(s):	Ondetti; Miguel A. (North Brunswick, NJ), Pluscec; Josip (East Brunswick, NJ), Sheehan; John T. (Middlesex, NJ), Jorpes; Johan E. (Stockholm, SW), Mutt; Viktor (Farsta, SW)
Assignee:	E. R. Squibb & Sons, Inc. (New York, NY)
Application Number:	04/726,558
Patent Claims:	1. A compound of the formula R-L-methionyl-glycyl-L-tryptophyl-L-methionyl-L-aspartyl-L-phenylalanine amide and pharmaceutically-acceptable acid addition and ammonium salts thereof wherein R is O-sulfate-L-tyrosyl, L-aspartyl-O-sulfate-L-tyrosyl, X-l-arginyl-L-aspartyl-L-tyrosyl, L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl, L-aspartyl-L-arginyl-L-aspartyl-L-tyrosyl, X-l-aspartyl-L-arginyl-L-aspartyl-L-tyrosyl, L-aspartyl-L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl, L-seryl-L-aspartyl-L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl, X-l-seryl-L-aspartyl-L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl, L-isoleucyl-L-seryl-L-asparty-L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl, or X-l-isoleucyl-L-seryl-L-aspartyl-L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl, wherein X is benzyloxycarbonyl, t-butyloxycarbonyl, trifluoroacetyl or 2. A compound in accordance with claim 1 having the name L-aspartyl-O-sulfate-L-tyrosyl-L-methionylglycyl-L-tryptophyl-L-methionyl- 3. A compound in accordance with claim 1 having the name tert.-butyloxycarbonyl-L-aspartyl-L-arginyl-L-aspartyl-L-tyrosyl-L-methion 4. A compound in accordance with claim 1 having the name L-aspartyl-L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl-L-methionyl-glycyl-L-t 5. A compound in accordance with claim 1 having the name t-butyloxycarbonyl-L-isoleucyl-L-seryl-L-aspartyl-L-arginyl-L-aspartyl-O-s ulfate-L-tyrosyl-L-methionylglycyl-L-tryptophyl-L-methionyl-L-aspartyl-L-ph 6. A compound in accordance with claim 1 having the name L-isoleucyl-L-seryl-L-aspartyl-L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl-L- methionyl-glycyl-L-tryptophyl-L-methionyl-L-aspartyl-L-phenylalanine amide. 7. A compound in accordance with claim 1 having the name benzyloxycarbonyl-L-isoleucyl-L-seryl-L-aspartyl-L-arginyl-L-aspartyl-O-su lfate-L-tyrosyl-L-methionyl-glycyl-L-tryptophyl-L-methionyl-L-aspartyl-L-ph 8. A compound in accordance with claim 1 wherein R is L-aspartyl-O-sulfate-L-tyrosyl or L-aspartyl-L-arginyl-L-aspartyl-O-sulfate-L-tyrosyl.