Process for cleavage of esters during the production of cephalos

Details Process for cleavage of esters during the production of cephalos Process for cleavage of esters during the production of cephalos

1990-11-05

1992-03-10

Rizzo, Nicholas S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540215, 540221, 540222, 540230, C07D50104

Patent

active

050951076

ABSTRACT:
Superior method for the removal of the methyl or ethyl ester group from cephalosporin and carbacephalosporin carboxylic acids.

REFERENCES:
patent: 5043439 (1991-08-01), Kant et al.
Dean, P., J. Chem. Soc., Halogenolysis of Methyl Glycyrrhetate with Lithium Iodide-Dimethylformamide, (1965) p. 6655.
Elsinger et al., Helv. Chim. Acta, vol. XLIII, No. 14-15 (1960) pp. 113-118.
McMurry et al., Synthetic Communications 2(6), 389-394 (1972) An Improved Method for the Cleavage of Methyl Esters.
Mochida et al., Chem. Pharm. Bull., vol. 36 (1988) pp. 3642-3645, Synthetic Studies on 1-Carbacephem Antibiotics: New Synthetic Approach to 3H-Carbacephems.

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