Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Bacterium or component thereof or substance produced by said...
Patent
1974-06-21
1976-11-23
Goldberg, Jerome D.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Bacterium or component thereof or substance produced by said...
A61K 31495
Patent
active
039937607
ABSTRACT:
(-)-2-Benzoyl-4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinoline is prepared by benzoylation of (-)-4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinoline, or cyclization of a compound of the formula ##SPC1##
Wherein X is F, Cl, Br, I or O-tosyl and which has the optical configuration of the final product, or cyclization of a compound of the formula ##SPC2## wherein Y is OH, alkoxy, F, Cl, Br or I under HY-removing reaction conditions and which has the optical configuration of the final product, which is an anthelmintic.
Andrews Peter
Loebich Friedrich
Pohlke Rolf
Seubert Jurgen
Thomas Herbert
Goldberg Jerome D.
Merck Patent Gesellschaft mit beschrankter Haftung
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