Patent ID: 7473796

Claim:
A compound of formula III: wherein: Y 2 represents (CR 7 R 8 ) l (CR 5 R 6 ) m (CR 3 R 4 ) n CR 1 R 2 SZ 2 , wherein: R 1 and R 2 are each independently linear alkyl or alkenyl having from 1 to 10 carbon atoms, branched or cyclic alkyl or alkenyl having from 3 to 10 carbon atoms, phenyl, phenyl substituted with at least one alkyl containing from 1-4 carbon atoms, or an alkoxy, halogen or nitro, or heterocyclic aromatic or heterocyclic radical, and in addition R 2 can be H; R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each independently H, linear alkyl or alkenyl having from 1 to 10 carbon atoms, branched or cyclic alkyl or alkenyl having from 3 to 10 carbon atoms, phenyl, phenyl substituted with at least one alkyl containing from 1-4 carbon atoms, or an alkoxy, halogen or nitro, or heterocyclic aromatic or heterocyclic radical; l, m and n are each independently an integer of from 1 to 5, and in addition n can be 0; and Z 2 is SR or —COR, wherein R is linear alkyl, branched alkyl or cyclic alkyl having from 1 to 10 carbon atoms, or simple aryl or aryl substituted with at least one alkyl containing from 1-4 carbon atoms, or heterocyclic aromatic or heterocyclic radical, wherein said heterocyclic aromatic radical or said heterocyclic radical is a 3-10 membered ring containing one or two heteroatoms selected from N, O or S.