Process for preparing cephalosporin intermediates

Details Process for preparing cephalosporin intermediates Process for preparing cephalosporin intermediates

C - Chemistry, Metallurgy

07

D

C07D 501/04 (2006.01) C07D 501/00 (2006.01) C07D 501/18 (2006.01) C07F 7/18 (2006.01)

Patent

CA 2099692

The present invention provides a process for the preparation of stable, crystalline cephalosporin intermediates of the formula (See Formula I) wherein X is HI, HCl or H2SO4 which are substantially free of the .DELTA.2 isomer, and which are convertible into broad-spectrum cephalosporin antibiotics.

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