Abstract: A method of producing a 6-substituted (S)-nicotine derivative with the general formula (III), wherein R is an optionally substituted alkyl, alkenyl, alkynyl, amido or amino group, optionally coupled to a carrier protein, is disclosed. An intermediate compound useful in the method is also comprised by the invention. The formula of the compound is (A) in which A represents the cationic radical of an organic nitrogen base, Y represents an anion formed by an electrophilic compound.

Abstract: A 5- or 6-nicotinyl-linker-carrier protein compound and immunogen having formula (a) wherein X is —NH—CO— or NH— or —C≡C— or —C═C— or CH2—; Y is —(CH2)k— or —(CH2)m—C6H10—(CH2)n— or (CH2)m—C6H4—(CH2)n— when Z is —NH—, with the proviso that X is not —NH—CO— when Y is (CH2)5 and Z is —NH—, and X is —NH—CO— or —C≡C— or —C═C— or CH2—, Y is —(CH2)m—C6H10—(CH2)n— or —(CH2)m—C6H4—(CH2)n—, when Z is —CO—, and X is —C≡C— or —C═C—, Z is —CO—, when Y is (CH2)k—, is disclosed. The compound may be used as a medicament, suitably in the form of a pharmaceutical composition.