Process for the preparation of a syn isomer or a mixture of syn and anti isomers of 7beta-acylamidoceph-3-em-4-carboxylic acids with antibiotic activity

Syn isomers or mixtures of syn and antiisomers (with a syn isomer content of at least 90%) of 7 beta -acylamidoceph-3-em-4-carboxylic acids with antibiotic activity and the formula I in which R is furyl, thienyl or phenyl; R is C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl, C3 -C7-cycloalkyl or phenyl;...

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1. Verfasser:	DAVID CEDRIC HUMBER
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
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