The compounds having the general structure of formula (I) wherein the symbols, indices and substituents have the following meaning if R2=OH and R3=H then R1=H, CN, NO2, CF3, F, Cl, Br, I, CH3 or if R3=OH and R2=H then R1=H, CN, NO2, CF3, F, Cl, Br, I, CH3, Et, n-Pr, i-Pr, n-Bu, i-Bu, t-Bu, phenyl, thienyl, furyl, thiazolyl or if R3=OH and R1=H then R2=H, CN, NO2, CF3, F, Cl, Br, I, CH3, Et, n-Pr, i-Pr, n-Bu, t-Bu, phenyl, thienyl, furyl, thiazolyl then X is e.g. ???with R4 being H, CH3, CH2CH3 or or ???and Y being or and the pharmaceutically acceptable salts, esters or amides and prodrugs of the above identified compounds of formula (I). The compounds are applied to modulate the in-vitro and in-vivo binding processes mediated by E-, P- or L-selectin binding.