Antibiotic A 40926 ester derivatives
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United States of America Patent
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Feb 25, 1997
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N/A
app pub date -
May 22, 1995
filing date -
Mar 27, 1991
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Abstract
The present invention relates to novel ester derivatives of antibiotic A 40926 complex and its N-acylaminoglucuronyl aglycone. The compounds of the invention are prepared according to an esterification process involving reaction of an A 40926 substrate with an excess of the selected alkanol in the presence of concentrated mineral acid and are reactive as antibiotics.
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