Patent ID: 8114863

Claim:
A compound having formula (IIa): in which: R1, R2 and R3 represent, independently of one another, —COOH, —P(O)(OH) 2 or —R 6 —P(O)—OH in which R 6 represents an H atom or a C 1 -C 3 alkyl group; X 1 , X 2 and X 3 represent, independently of one another, L-Y in which L represents a C 1 -C 3 alkyl group, Y represents —CONH 2 , —CO—NR7R8 or —NR7-CO—R8, in which R7 represents H, a C 1 -C 6 alkyl group or a C 1 -C 6 hydroxyalkyl group, and R8 represents a C 1 -C 6 alkyl or C 1 -C 6 hydroxyalkyl group, provided that at least R7 or R8 represents a C 1 -C 6 hydroxyalkyl group; D represents CH or N; E represents CH or N; F 1 represents CH or N; K 1 to K 12 each independently represent H, —(CH 2 ) j —CH 3 or —(CH 2 ) i —OH, in which j=0 to 3 and i=1 to 3, or K 3 or K 4 with K 5 or K 6 , and/or K 7 or K 8 with K 9 or K 10 form a ring having 3 to 6 carbon atoms; or an isomer, an enantiomer or a diastereoisomer of these or their mixtures.