Patent ID: 6844438

Claim:
A compound of Formula I, wherein R is 3-fluoropropyl (3); 2-ethoxyethyl (5); 2-methoxyethyl (6); 3,3,3-trifluoropropyl (10); 3-cyanopropyl (12); (2-furyl)methyl (22); 3-(2-thienyl)-3-oxo-propyl (26); 3-(2-furyl)-3-oxo-propyl (28); 3-(2-thienyl)-3-hydroxy-propyl (29); 3-(2-furyl)-3-hydroxy-propyl (31); 3-idoprop-(2E)-enyl (34); or 3-idoprop-(2Z)-enyl (35); 3-(tri-n-butylstannyl)-prop-(2E)-enyl (32); 3-(tri-n-butylstannyl)-prop-(2Z)-enyl (33); or a salt thereof.