Patent ID: 7439355

Claim:
A compound of formula II wherein A represents C 1 alkylene or linear C 2 alkylene; B represents -Z-, -Z-N(H)— or -Z-O— in which latter two groups, Z is attached to the carbon atom bearing R 2 and R 3 and represents C 1 alkylene or linear C 2 alkylene; Z represents a direct bond or C 1-4 alkylene; G represents CH; R 1 represents straight— or branched-chain C 1-4 alkyl terminated by C(O)R 5a or —N(HC(O)OR 10b . R 5a and R 10b independently represent straight— or branched-chain C 26 alkyl; R 2 represents H or OH; R 3 represents H; R 4 is a single cyano group in the para-position relative to B; R 41 to R 46 all represent H, or a protected derivative thereof.