FIELD: chemistry.
SUBSTANCE: present invention relates to novel surfactants of formula III and their use in obtaining nanoparticles which serve as vectors for biologically active ingredients. 
, 
and 
, where R3 is selected from group IV or V; Y is a sulphur atom or -NH-CO-(CH2)n-X-; X is a sulphur atom or -CH2-; n and y are integers from 0 to 10; R is a hydrocarbon, fluorinated hydrocarbon or thioalkyl; W is -NH- or CH2-; p is an integer from 1 to 50; m is an integer from 0 to 9; and if X = CH2, 0 < m+n < 6; x is an integer from 0 to 30; R1 is selected from the following radicals: 
where R' is H or polyhydroxylated hydrocarbon; R2 is an identification group which has affinity to a biological target; Z is a spacer group.
EFFECT: design of novel surfactants and nanoparticles based on the said surfactants.
22 cl, 9 ex, 2 tbl, 8 dwg
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