Patent ID: 7038077

Claim:
A compound of the formula I wherein R 11 is CO 2 R 14 and R 12 is hydrogen or fluoro; or R 11 is hydrogen or fluoro and R 12 is CO 2 R 14 ; R 13 and R 14 are, independently, hydrogen, (1–10C) alkyl, (2–4C) alkenyl, aryl or arylalkyl; A is (Q) p -; p is any integer from 1–10; and Q is independently selected, each time taken, from the group amino acyl; provided that the compound is not one in which R 11 is CO 2 R 14 ; R 12 , R 13 and R 14 are hydrogen; p is 1; and Q is L-alanyl; or a pharmaceutically acceptable salt thereof.