Carboxyalkyl peptide derivatives

Claim 2

A compound of the formula ##STR29## and the pharmaceutically acceptable acid addition salts thereof wherein x represents hydrogen, alkoxy or benzyloxy; y represents a radical selected from alkyl, alkylthioalkyl, ##STR30## wherein v is 2 or 3, ##STR31## wherein z represents hydrogen or nitro; W 1 and W 2 represent methyl or trifluoromethyl; and R 1 represents hydroxy or alkoxy and the stereochemistry of the carbon marked by the asterisk is R.

Claim 3

A compound according to claim 1 having the formula ##STR32## and the pharmaceutically acceptable salts thereof wherein R 1 , R 3 , R 17 , and R 18 are as described in claim 1; and R 13 represents benzyloxy; benzyloxy substituted with 4-chloro, 2-chloro, 4-methyl, 4-nitro or 4-amino; benzylamino; phenyl or phenyl substituted with 4-chloro, 2-chloro, 4-methyl, 4-nitro or 4-amino.

Claim 4

A compound according to claim 1 which is N-[1-(R)-carboxyethyl]-L-leucyl-O-benzyl-L-tyrosine N-methylamide and the pharmaceutically acceptable salts thereof.

Claim 5

A compound according to claim 1 which is N[1-(R)-carboxy-3-methylthiopropyl]-L-leucyl-O-methyl-L-tyrosine N-methylamide and the pharmaceutically acceptable salts thereof.

Claim 6

A compound according to claim 1 which is N-[4-N-(benzyloxycarbonyl)amino-1-(R)-crboxybutyl]-L-leucyl-O-methyl-L-tyrosine N-methylamide and the pharmaceutically acceptable salts thereof.

Claim 7

A compound according to claim 1 which is N-[3-N-(benzyloxycarbonyl)amino-1-(R)-carboxypropyl]-L-leucyl-O-methyl-L-tyrosine N-methylamide and the pharmaceutically acceptable salts thereof.

Claim 8

A compound according to claim 1 which is N-[3-N-(p-nitrobenzyloxycarbonyl)amino-1-(R)-carboxypropyl]-L-leucyl-O-methyl-L-tyrosine N-methylamide and the pharmaceutically acceptable salts thereof.

Claim 9

A compound according to claim 1 which is N-[3-N-(benzoyl)amino-1-(R)-carboxypropyl]-L-leucyl-O-methyl-L-tyrosine N-methylamide and the pharmaceutically acceptable salts thereof.

Claim 10

A compound according to claim 1 which is N-[3-(N'-benzyl)carbamoyl-1-(R)-carboxypropyl]-L-leucyl-O-methyl-L-tyrosine N-methylamide and the pharmaceutically acceptable salts thereof.

Claim 11

A compound according to claim 1 which is N-[2-(S)-N-(1-(R)-carboxyethyl amino-4,4-di-(trifluoromethyl)butanoyl]-O-methyl-L-tyrosine N-methylamide and the pharmaceutically acceptable salts thereof.

Claim 12

A compound according to claim 1 which is N-[2-(S)-N-(3-N-(benzyloxycarbonyl)amino-1-(R)-carboxypropyl)amino-4,4-di-(trifluoromethyl)-butanoyl]-O-methyl-L-tyrosine N-methylamide and the pharmaceutically acceptable salts thereof.

Claim 13

A compound having the formula: ##STR33## R 1 represents hydroxy, alkoxy, aralkoxy; R 3 represents alkyl or alkyl substituted with one or two trifluoromethyl groups; R 4 represents hydrogen or alkyl; n is 1 to 4 inclusive; R 13 represents alkyl, aryl, aralkyl, aralkoxy, alkoxy, alkylamino, arylamino, aralkylamino, dailkylamino, or substituted aryl, substituted aralkyl, and substituted aralkoxy wherein the substituent on the aromatic moiety may be one or more groups selected from halogen, alkyl, hydroxy, alkoxy, aralkoxy, aralkoxyamino, aminomethyl, cyano, acylamino, dialkylamino, carboxy, sulphonamido, alkylthio, nitro and phenyl; R 17 represents substituted alkyl wherein the substituent is alkoxy, aralkoxy, alkoxycarbonylamino, aralkoxycarbonylamino, carboxyalkyl or carboxyaralkyl; or substituted aralkyl wherein the aryl substituent is one or more groups selected from alkyl, alkoxy, alkyl thio or aralkoxy; and R 18 represents amino, alkylamino, dailkylamino, substituted alkylamino wherein the substituent is amino, hydroxy, alkoxy, carboxy, carboxamido, carboxyalkyl, alkyl thio, alkylsulphinyl or alkylsulphonyl, hydroxamino, alkoxyamino, aralkylamino, alkoxy, aralkoxy, alkylaminoalkoxy.

Claim 14

A compound having the formula: ##STR33## R 1 represents hydroxy, alkoxy, aralkoxy; R 3 represents alkyl or alkyl substituted with one or two trifluoromethyl groups; R 4 represents hydrogen or alkyl; n is 1 to 4 inclusive; R 13 represents alkyl, aryl, aralkyl, aralkoxy, alkoxy, alkylamino, arylamino, aralkylamino, dailkylamino, or substituted aryl, substituted aralkyl, and substituted aralkoxy wherein the substituent on the aromatic moiety may be one or more groups selected from halogen, alkyl, hydroxy, alkoxy, aralkoxy, aralkoxyamino, aminomethyl, cyano, acylamino, dialkylamino, carboxy, sulphonamido, alkylthio, nitro and phenyl; R 17 represents substituted alkyl wherein the substituent is alkoxy, aralkoxy, alkoxycarbonylamino, aralkoxycarbonylamino, carboxyalkyl or carboxyaralkyl; or substituted aralkyl wherein the aryl substituent is one or more groups selected from alkyl, alkoxy, alkyl thio or aralkoxy; and R 18 represents amino, alkylamino, dailkylamino, substituted alkylamino wherein the substituent is amino, hydroxy, alkoxy, carboxy, carboxamido, carboxyalkyl, alkyl thio, alkylsulphinyl or alkylsulphonyl, hydroxamino, alkoxyamino, aralkylamino, alkoxy, aralkoxy, alkylaminoalkoxy.