W0 2011/000721 A1 I||||||||||||||||||||||||||||||||||||||||||||||||||||||||| - Questel

wherein R 2 may be hydroxyl (-0H), alkoxy (-0-R'), wherein R' is a C1-C8 linear
or branched, saturated or unsaturated alkyl chain and is preferably a methoxy
group (-OCH 3 ), or R 2 is -N-R 3 2 , wherein each R3 may be independently H, a
C1-C8 linear or branched, saturated or unsaturated alkyl chain, optionally
substituted with an A group, wherein the A group is a C3-C6 saturated or
partially unsaturated cyclic- or heterocyclic ring or a C5-C6 aromatic or
heteroaromatic ring, optionally substituted at any available position with one or
more of hydroxyl (-OH), C1-C8 linear or branched, saturated or unsaturated
alkyl chain, C1-C8 linear or branched, saturated or unsaturated alkoxy carbon
chain, amino (-NH 2 ) , thiol (-SH), nitro (-NO 2 ), carboxy (-COOH); or R 3 is an A
group as above defined; and M may be
H
wherein Q is selected from — N — , -S- or -O- and is linked to the J scaffold
through a Y linker and n is 1 to 3; or wherein R2 is -N-R 3 2 as above disclosed
and M is -(O-CH 2 -CH 2 -) n -Q or -(O-CH 2 -CH 2 -CH 2 -) n -Q, wherein Q, Y and n are
as above disclosed, wherein each R 3 may be independently H, a C1-C8 linear