Method for the isolation and purification of taxol and its natural analogues
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United States of America Patent
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Sep 23, 1997
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N/A
app pub date -
May 5, 1995
filing date -
Nov 2, 1990
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Expired
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Abstract
An improved method for isolating taxol and certain clinically important analogues of taxol from a crude extract of a naturally occurring Taxus species comprising treating the extract by reverse phase liquid chromatography on an adsorbent, causing the taxol and the taxol analogues to be adsorbed on the adsorbent, and recovering taxol and the natural analogues of taxol from the adsorbent by elution with an elutant. The compounds thus isolated in pure form are taxol, taxol-7-xyloside, 10-deacetyltaxol, 10-deacetyltaxol-7-xyloside, cephalomannine, cephalomannine-7-xyloside, 10-deacetylcephalomannine-7-xyloside, baccatin III, 10-deacetylbaccatin III, baccatin VI, brevitaxane A, and taxiflorine.
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