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

wherein R is H and R 2 may be hydroxyl (-OH), alkoxy (-0-R'), wherein R' is
a C1-C8 linear or branched, saturated or unsaturated alkyi 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
may be a C3-C6 saturated or partially unsaturated cyclic- or heterocyclic
ring or a C5-C6 aromatic or heteroaromatic ring, which cyclic or
heterocyclic, aromatic or heteroaromatic ring may be 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, hydroxyalkyl,
such as hydroxymehtyl (-CH 2 OH), amino (-NH 2 ), thiol (-SH), nitro (-NO 2 ),
carboxy (-COOH), wherein preferred A groups are cyclopropane,
cyclopentane, cyclohexane, phenyl, thiazole, imidazole, oxazole; or
wherein R 3 may be any of the A groups above disclosed
10. A compound having the general formula (Ib),
[X-Y] J-J (Ib)
wherein X is a saccharidic or pseudosaccharidic unit of formula M-D-M',
wherein M' is of formula
and D is of formula