Intermediate products for the preparation of Z-cephalosporins

Details Intermediate products for the preparation of Z-cephalosporins Intermediate products for the preparation of Z-cephalosporins

1982-11-01

1985-02-19

Coughlan, Jr., Paul M.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544 22, 544 27, 544 28, C07D27748

Patent

active

045007160

ABSTRACT:
Highly active substantially pure Z-isomers of cephalosporins are produced by the following synthesis: ##STR1## in which R.sup.1, R.sup.4 and R.sup.5 ae various organic radicals,

REFERENCES:
patent: 3483216 (1969-12-01), Woodward
patent: 4008246 (1977-02-01), Ochiai et al.
patent: 4416880 (1983-11-01), Boberg et al.

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