| abstract |
Compounds having one of the two formulas I or II. In formula I, Rp1 is a group which comprises an informant group comprising a fluorophore, a chromophore, an organometallic group, a therapeutic agent, an antigen or an isotope-labeled group, X and Y independently represent N, O or S ; Cg1 is a carrier group which comprises a solubilization group substantially ionized in water, and r is a receptor group which, with X and Y, forms complexes with boric acids. In formula II, Rp2 is a group which comprises an informant group containing a fluorophore, a chromophore, an organometallic group, a therapeutic agent, an antigen or an isotope-labeled group; X and Y independently represent M, O or S; Cg2 is a carrier group which comprises a solubilization group substantially ionized in water, and r is a receptor group which, with X and Y, forms complexes with boric acids. |