Patent ID: 8257734

Claim:
A method of enhancing an immune response in a patient in need thereof, comprising the step of administering, as an adjuvant with one or more different antigens, to the patient at least one compound according to formula (I) or its tautomeric isoform shown in formula (II) wherein R6 represents OH or H, and R8 is a straight or branched chain, saturated or ethylenically-unsaturated aliphatic hydrocarbyl group containing 1 to 20 carbon atoms which may optionally be substituted by one or more substituent groups selected from halogen, C1-C6 alkoxy, carboxy, C1-C6 alkoxycarbonyl and NR1R2 wherein each of R1 and R2 is independently selected from hydrogen and C1-C6 straight or branched alkyl or R1 and R2 together with the N atom to which they are attached form a saturated heterocyclic group selected from piperidino, piperazino and morpholino; R7 is O, OH, or halogen; R9 represents hydrogen, CH 3 , N-oxide; each R10 independently represents a straight or branched C1-C6 alkyl or straight or branched C1-C6 alkoxy group or a halogen; and n is an integer of from 0 to 4; or conjugates, and salts thereof.