Process for the preparation of the sodium salt of 6[D-(-).alpha.-4-(ethyl-2,3-dioxo-1-piperazinocarbonylamino)phenylacetamido]penicillanic acid
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United States of America Patent
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Dec 7, 2004
Grant Date -
Feb 6, 2003
app pub date -
Aug 1, 2002
filing date -
Aug 3, 2001
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Abstract
The present invention refers to the preparation process of the sodium salt of 6[D-(-).alpha.-4-(ethyl-2,3-dioxo-1-piperazinocarbonylamino) phenylacetamido]penicillanic acid, comprising the reaction of the acid with a reagent selected from the group consisting of sodium hydroxide, sodium carboxylates and sodium alcoholates, followed by a separation step of the so obtained sodium salt by precipitation.
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