Tetrapeptidesemicarbazide derivatives and their production and u

Details Tetrapeptidesemicarbazide derivatives and their production and u Tetrapeptidesemicarbazide derivatives and their production and u

1980-12-05

1982-06-29

Phillips, Delbert R.

Drug, bio-affecting and body treating compositions

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

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

2601125E, A61K 3700, C07C10352

Patent

active

043372473

ABSTRACT:
Novel tetrapeptidesemicarbazide derivatives, inclusive of a pharmacologically acceptable salt thereof, which has the general formula (I): ##STR1## wherein R.sub.1 is hydrogen or lower alkyl; R.sub.2 is hydrogen or a D-.alpha.-amino acid side chain; R.sub.3 is hydrogen or lower alkyl; X is oxygen or sulfur, are useful as analgesics.

REFERENCES:
patent: 4178371 (1979-12-01), Morgan

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