Synthesis of carbohydrate analogs (positional, configurational, and optical) of N-acetylmuramoyl-l-alanyl-d-isoglutamine, and their immunoadjuvant activities
3-O-(D-2-propanoyl-L-alanyl-D-isoglutamine)-D- and -L-glucopyranose were synthesized, in order to clarify the structural requirements for the immunoadjuvantactivity of the carbohydrate moiety in N-acetylmuramoyl-L-alanyl-D-isoglutamine. Immunoadjuvantactivity of the N-acetylmuramoyl-dipeptide analogs was examined in guinea-pigs.