Cephalosporin intermediates

Details Cephalosporin intermediates Cephalosporin intermediates

1986-07-11

1987-12-22

Marantz, Sidney

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540224, 540226, C07D50118

Patent

active

047147601

ABSTRACT:
Stable, crystalline cephalosporin intermediates of the formula ##STR1## wherein X is HI or HCl and Nu and Nu.sup..sym. are certain N-containing heterocyclic rings attached via a sulfur atom or a ring nitrogen atom, respectively, which are substantially free of the .DELTA..sup.2 isomer; processes for, and intermediates in, the preparation of the above compounds; and processes for the preparation of broad-spectrum cephalosporin antibiotics.

REFERENCES:
patent: 4104391 (1978-08-01), Cise
patent: 4139701 (1979-02-01), Berges
patent: 4168309 (1979-09-01), Ayres
patent: 4182863 (1980-01-01), Gottstein
patent: 4369313 (1983-01-01), Jones
patent: 4406899 (1983-09-01), Aburaki
patent: 4446318 (1984-05-01), Naito
patent: 4499088 (1985-02-01), Takaya
patent: 4540779 (1985-09-01), Conrad
patent: 4659812 (1987-04-01), Aburaki et al.

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