Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1981-02-02
1982-08-31
Rizzo, Nicholas S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
2602453, 424270, 260239A, C07D49904
Patent
active
043471838
ABSTRACT:
Described is a novel process for the preparation of penems and carbapenems useful as antibacterial agents which comprises the reaction of an appropriate 4-substituted-azetidine-2-one with an acid halide in the presence of a tertiary amine and an alkaline earth metal carbonate, followed by reaction of the thereby formed 1-imido-4-substituted-azetidine-2-one with a trialkyl phosphite.
Also described are novel penems useful as antibacterials which are prepared by the described process.
REFERENCES:
patent: 4172899 (1979-10-01), Christensen et al.
patent: 4203902 (1980-05-01), Shih
patent: 4206219 (1980-06-01), Christensen et al.
patent: 4269771 (1981-05-01), Lombardi et al.
patent: 4293599 (1981-10-01), Christensen et al.
Gostelli et al., Jacs 100 8214(1978).
Afonso Adriano
Hon Frank
Eisen Bruce M.
King Mary S.
Rizzo Nicholas S.
Rosen Gerald S.
Schering Corporation
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