FIELD: chemistry.
SUBSTANCE: invention relates to the field of chemical synthesis, in particular to a method for the synthesis of a conjugate for molecular imaging and therapy. Method for preparing an ethylenedicysteine-sugar conjugate involves mixing unprotected thiazolidine-carboxylic acid in an organic solvent with a binding agent, selected from sulpho-NHS, DMAP, DBU, EDAC or DCC, adding an amino sugar to form a thiazolidine-sugar conjugate and reduction of the thiazolidine-sugar conjugate with a reducing agent containing an alkali metal and an electron source, thereby obtaining an ethylenedicysteine-sugar conjugate.
EFFECT: invention provides efficient preparation of a high purity conjugate.
21 cl, 19 dwg, 6 ex
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