Process for preparing cephalosporin intermediates

Details Process for preparing cephalosporin intermediates Process for preparing cephalosporin intermediates

1995-02-02

1997-01-14

Shah, Mukund J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540219, C07D50146, C07D50124

Patent

active

055941311

ABSTRACT:
The present invention provides a process for the preparation of stable, crystalline cephalosporin intermediates of the formula ##STR1## wherein X is HI, HCl or H.sub.2 SO.sub.4 which are substantially free of the .DELTA..sup.2 isomer, and which are convertible into broad-spectrum cephalosporin antibiotics.

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The Wall Street Journal, Feb. 12, 1992.
Chemical & Engineering News, Jun. 22, 1992, pp. 7-13.

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