ES408438A1 - A procedure for the preparation of substitute cef-3-emas and cef-3-emsulfoxidos. (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of substitute cef-3-emas and cef-3-emsulfoxidos. (Machine-translation by Google Translate, not legally binding)
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Beecham Group PLC
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Beecham Group PLC
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A procedure for the preparation of substituted cef-3-emas and cef-3-em-sulfoxides of formula (VIII): **(See formula)** where n is 0 or 1, X is a substituted amino group, R3 is an esterified carboxylic acid group and R is hydrogen or an organic radical; whose procedure is to first prepare a compound of the formula: **(See formula)** where n, X, R and R3 are those defined with respect to formula (VIII) above, Ra, Rb and Rc are substituted or unsubstituted lower alkyl, aryl or aralkyl groups and are alkoxy or aralkoxy groups, substituted or unsubstituted substituted, and then heating said compound to a temperature between 30ºC and 150ºC, in an inert organic solvent, thereby producing the desired compound of formula (VIII). (Machine-translation by Google Translate, not legally binding)
ES408438A1972-11-091972-11-09A procedure for the preparation of substitute cef-3-emas and cef-3-emsulfoxidos. (Machine-translation by Google Translate, not legally binding)
ExpiredES408438A1
(en)
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