Lactam-free amino acids

Details Lactam-free amino acids Lactam-free amino acids

1995-01-25

2000-04-25

Shippen, Michael L.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Radical -xh acid, or anhydride, acid halide or salt thereof...

562504, 562507, A01N 3712

Patent

active

060544821

ABSTRACT:
The present invention concerns cyclic amino acids of formula ##STR1## substantially free from the lactam ##STR2## wherein n is an integer of from 4 to 6, a process for the preparation thereof, compositions containing the compounds and methods of using them.

REFERENCES:
patent: 4024175 (1977-05-01), Satzinger et al.
patent: 4087544 (1978-05-01), Satzinger et al.
patent: 4152326 (1979-05-01), Hartenstein et al.
patent: 4228179 (1980-10-01), Hartenstein
patent: 4894476 (1990-01-01), Butler et al.
Copending U.S. application 399056, filed Aug. 25, 1989.

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