111390-01-3Relevant articles and documents
Process for preparing cephalosporin intermediates
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, (2008/06/13)
Processes for the preparation of stable, crystalline cephalosporin intermediates of the formula STR1 wherein X is HI or HCl, and Nu and Nu≈ are certain N-containing heterocyclic rings attached via a sulfur atom or a ring nitrogen atom, respectively, which are substantially free of the Δ2 isomer; processes for intermediates in the preparation of the above compounds; and processes for the preparation of broad-spectrum cephalosporin antibiotics.