Tri-, tetra, and penta-peptides, their preparation and compositi

Details Tri-, tetra, and penta-peptides, their preparation and compositi Tri-, tetra, and penta-peptides, their preparation and compositi

1981-12-17

1983-08-30

Phillips, Delbert R.

Drug, bio-affecting and body treating compositions

Immunoglobulin, antiserum, antibody, or antibody fragment,...

Reduced antigenicity, reduced ability to bind complement, or...

2601125R, C07C10352, A61K 3702

Patent

active

044016581

ABSTRACT:
The invention provides tri-, tetra- or penta-peptides of the general formula: ##STR1## in which RCO is a fatty acid residue, R.sub.1 is hydroxyl, amino, alkoxy or benzyloxy, R.sub.2 and R.sub.4 (identical or different) represent hydrogen, carboxyl, alkoxycarbonyl or benzyloxycarbonyl or an optionally esterified N-carbonylglycyl or N-carbonyl-D-alanyl radical, it being impossible for R.sub.2 and R.sub.4 simultaneously to represent hydrogen, R.sub.3 is hydrogen, or represents a glycyl or D-alanyl residue (in which case, only one of the radicals R.sub.2 and R.sub.4 can represent an N-carbonylglycyl or N-carbonyl-D-alanyl radical), X is a sulphur atom or methylene, and m and n=1 or 2, it being understood that if X is methylene, m and n are different from 1, their salts, their preparation and compositions containing them: the compounds are useful as vaccine adjuvants or as non-specific stimulants of anti-infectious or anti-tumoral activity.

REFERENCES:
patent: 4261979 (1981-04-01), Jolles et al.
patent: 4311640 (1982-01-01), Kuroda et al.

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