C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/101.5
C07D 501/22 (2006.01) C07D 205/095 (2006.01) C07D 499/00 (2006.01)
Patent
CA 1067892
ABSTRACT OF THE DISCLOSURE There is provided compounds of the formula: Image 1 wherein R stands for benzyl, phenoxymethyl, 4-amino-4-carboxy- 1-butyl, .alpha.-aminobenzyl and protected derivatives thereof, lower alkyl, aryl and heteroaryl, R3O-, R3S-, R3R4N- wherein R3 is lower alkyl, phenyl, or phenylloweralkyl, R4 is hydrogen or R3; R1 is hydrogen or a cleavable radical lower alkyl, 2,2,2-trichloroethyl, benzyl, p-nitrobenzyl, benzhydryl, phenacyl, or trimethylsilyl, and R2 is hydrogen or methoxy. These compounds possess antibiotic activity and are also useful in preparing known penicillins and cephalosporins.
229909
Micetich Ronald G.
Morin Robert B.
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