Process for the preparation of a syn-isomer or a mixture of syn- and anti-isomers of novel antibiotically active 7-beta-acylamidoceph-3-em-4-carboxylic acids

Syn-isomers or mixtures of syn- and anti-isomers, the amount of the syn-isomer being at least 90%, of novel antibiotically active 7 beta -acylamidoceph-3-em-4-carboxylic acids of the formula I, in which R denotes furyl, thienyl or phenyl; R denotes C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl, C3-C7-cy...

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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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