Verfahren zur Herstellung von Cephalosporinderivaten
Betaine (Ie is prepd. by reacting the hydronitrate with a base, pref. an organic one with a pKb of 6 or less, particularly a liquid tertiary or secondary amine: (where R1 is H; R2 is acyl and X is quaternary ammonium). Specifically claimed is N-(7-21-thienylacetamido-cepth-3-em-3-ylmethyl)pyridinium...
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| creator | STOCKER,GABRIELLE GIBSON LONG,ALAN JOHN SHARP,CHRISTOPHER ALFRED WILKINSON,PETER ALFRED CRISP,HAROLD EARDLEY,STEPHEN FRANCIS OUGHTON,JOHN |
| description | Betaine (Ie is prepd. by reacting the hydronitrate with a base, pref. an organic one with a pKb of 6 or less, particularly a liquid tertiary or secondary amine: (where R1 is H; R2 is acyl and X is quaternary ammonium). Specifically claimed is N-(7-21-thienylacetamido-cepth-3-em-3-ylmethyl)pyridinium-4-carbo- xylate. |
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Specifically claimed is N-(7-21-thienylacetamido-cepth-3-em-3-ylmethyl)pyridinium-4-carbo- xylate.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING, OR PRINTINGFOR OFFICE OR OTHER COMMERCIAL PURPOSES CHEMISTRY CORRECTION OF TYPOGRAPHICAL ERRORS HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HYGIENE i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS |
| title | Verfahren zur Herstellung von Cephalosporinderivaten |
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