Abstract:
Novel 6-deoxyglucosamine-peptide derivatives of the formula ##STR1## wherein R is hydrogen or an organic acid residue or alkoxycarbonyl;R.sup.1 is hydrogen or acyl;R.sup.2 is hydrogen or lower alkyl;R.sup.3 and R.sup.4 are each hydrogen or lower alkyl which may be substituted with hydroxyl;R.sup.5 and R.sup.6 are each carboxyl which may be esterified or amidated;R.sup.7 is hydrogen or aralkyl; and(D) and (L) each indicate configurations if theirrespective carbon atoms are asymmetric or a salt thereof having immunostimulatory activity.
Abstract:
A composition which is capable of specifically inducing an immunity when administered into the body of a host in association with a tumor antigen, or which is capable of non-specifically enhancing an immunizing function when administered into the body of a tumor-carrying host, comprising a glycolipid as active ingredient in association with a pharmaceutically acceptable carrier, wherein the saccharide moiety of the glycolipid is selected from the group consisting of fructose, glucose and sucrose.
Abstract:
Muramyldipeptide derivatives of the formula: ##STR1## wherein Y represents a mycoloyl group or a synthetic higher acyl group having total carbon number of C30-C90 and having at least a branched chain of long alkyl group on the .alpha.-position thereof,Q represents an -L-alanyl-D-isoglutamine group, a -glycyl-D-isoglutamine group or an -L-seryl-D-isoglutamine group;Salts of such derivatives; the method of preparing such derivatives and their salts; the derivatives and their salts having potent immunoadjuvant activities and antitumor activity and being applicable as the agent for the immunotherapy of cancer for humans and animals.