One or more compounds for use in the treatment, relief or substantial prevention of an infectious disease, autoimmune disease or allergic condition, the formula having one or more compounds: and pharmaceutically acceptable salts thereof, wherein X is a selected member of the group consisting of -O- and -NH-； And it is a member selected from the group consisting of -O- and -S-； R1, R2 and R3 are each members independently selected from the group consisting of acyl (C2-C20)； R4 is a member selected from the group consisting of -H and -PO3R7R8, where R7 and R8 are each members independently selected from the group consisting of -H or aliphatic groups (C1-C4)； R5 is a member selected from the group consisting of -H, -CH3 and -PO3R9R10, wherein R9 and R10 are each members independently selected from the group consisting of -H and aliphatic groups (C1-C4)； R6 is selected from H, OH, oxyaliphatic groups (C1-C4), -PO3R11R12, -OPO3R11R12, -SO3R11, -OSO3R11, -NR11R12, - SR11, -CN, -NO2, -CHO, -CO2R11 and -CONR11R12, in where R11 and R12 are each independently selected from H and aliphatic groups (C1-C4), provided that one of R4 and R5 is a group containing phosphorus and that when R4 is -PO3R7R8, R5 is different from -PO3R9R10, where "* 1", "* 2", "* 3" and "**" represent chiral centers； where n, m, p and q are each independently an integer from 0 to 6, provided that the sum of pym is from 0 to 6, and where the hexapyranoside may be in another configuration than the gluco configuration represented in the formula, selected from alo, altro, hand, gulo, gone, galacto and talo； characterized in that the one or more compounds are administered in the absence of exogenous antigen.Uno o más compuestos para uso en el tratamiento, alivio o prevención sustancial de una enfermedad infecciosa, enfermedad autoinmune o afección alérgica, teniendo el uno o más compuestos la fórmula: y sales farmacéuticamente aceptables de los mismos, en donde X es un miembro seleccionado del grupo que consis
