Patent ID: 7217733

Claim:
A compound of general formula (I) or a pharmaceutically acceptable salt or stereoisomer thereof: A—(X 1 —ONO 2 ) s (I) wherein: s is an integer equal to 1 or 2; A is: wherein n is an integer from 1 to 6, preferably equal to 1 or 2; N 0 is —COO— or —COOR 0 wherein R 0 is H or a linear or branched (C 1 –C 10 )-alkyl; R 1 is selected from the group consisting of: wherein N 2 has the same meanings as defined for N 0 and they may be equal or different, N 2a is H, —C(O)—, —COO—, —COOR 0 , —C(O)R 0 — wherein R 0 is a linear or branched (C 1 –C 10 )-alkyl; with the proviso that at least one of the groups N 0 , N 2 or N 2a is —COO— or —C(O)— i.e. it has a free valence capable of binding to X 1 ; X 1 is a linear or when possible branched (C 1 –C 6 )-alkylene, optionally substituted with at least an halogen atom, or —(CH 2 —CH 2 —S) 2 —; provided that when A is 1a) and R 1 is the group of formula (III) is different from a linear or when possible branched (C 1 –C 6 )-alkylene.