Patent ID: 8163698

Claim:
A compound of the formula A-B-D-E-F-(G) r -(K) s -L wherein r and s are 0; A is an α-amino acid derivative of Formula III a , wherein R a is hydrogen or unsubstituted C 1 -C 3 -alkyl; R 1 a is C 1 -C 3 -alkyl; R 6 a is methyl, hydroxyl- or methoxy-substituted C 1 -C 3 -alkyl, phenyl, or fluorine- or methoxy-substituted phenyl; and R 7 a is hydrogen or C 1 -C 3 -alkyl; B is valyl, isoleucyl, or 2-tert-butylglycyl; D is N-methylvalyl or N-methylisoleucyl; E is prolyl, thiazolidinyl-4-carbonyl or 3,4-didehydroprolyl; F is prolyl; and L is N-benzylamide, N-methoxy-N-benzylamide, tert-butylamide, tert-butyl ester, N-methoxy-N-methylamide, isopropylamide, 5-phenyl isoxasolidinyl, isoxazolidinyl, pentylamide, (R) or (S) phenethylamide, —O-tert-butyl, isoxazolidinyl, 5-phenyl isoxazolidinyl, or a pharmaceutically acceptable salt thereof.