Patent ID: 8728515

Claim:
A method of administering a vaccine composition to a patient comprising the step of: administering to the patient a vaccine composition comprising as an adjuvant a compound of formula I: as an adjuvant in vaccination; wherein R is an optionally-substituted alkyl, alkenyl, alkynyl, aryl, arylalkyl or alkylaryl moiety having from 1 to 50 carbon atoms; R 1 is an optionally-substituted alkyl, alkenyl, alkynyl, aryl, arylalkyl or alkylaryl moiety having from 1 to 40 carbon atoms; each of R 2 , R 3 and R 4 is independently selected from an optionally-substituted alkylene, alkenylene, alkynylene, arylene, arylalkylene or alkylarylene moiety having from 1 to 40 carbon atoms; each of X, Y and Z is independently selected from an optionally-substituted alkylene, alkenylene, alkynylene, arylene, alkylarylene or cycloalkylene, ketone, ester, amide, imide, imine, thioether, ether, thioester, thioketone; and P is selected from hydrogen, an alkyl group, or a metal, phosphonium or ammonium species; wherein at least one of X, Y or Z includes a moiety selected from cyclopropyl, C=A, C-AH and C—OR 5 ; wherein R 5 is alkyl or haloalkyl, and A is S, O or NR 6 , wherein R 6 may be H or alkyl.