Process for preparing cepham intermediates

Details Process for preparing cepham intermediates Process for preparing cepham intermediates

1989-07-10

1991-11-19

Rizzo, Nicholas S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540222, 540221, C07D50104

Patent

active

050667971

ABSTRACT:
There is described a process for producing exomethylene cepham intermediates useful in cephalosporin chemistry. The process comprises the preparation of a compound of the formula ##STR1## in which R.sup.1 is an amino group, a protected amino group, an acylamino group or a diacylamino group,

REFERENCES:
patent: 4558123 (1985-12-01), McShane
patent: 4958018 (1990-09-01), Torii et al.

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