Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1980-02-13
1981-11-17
Rizzo, Nicholas S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
544 22, 424246, C07D50120
Patent
active
043012795
ABSTRACT:
Process for the production of 7.beta.-substituted 3-hydroxycepham-4-carboxylic acid compounds of the formula ##STR1## in which R.sub.1.sup.a represents hydrogen or an amino-protecting group R.sub.1.sup.A, and
REFERENCES:
patent: 3193550 (1965-07-01), Harris
patent: 3989695 (1976-11-01), Scartazzini
Almaula Prabodh I.
Ciba-Geigy Corporation
Rizzo Nicholas S.
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