Semi-synthesis of taxane intermediates from 9-dihydro-13-acetylbaccatin III
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United States of America Patent
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Apr 10, 2007
Grant Date -
May 12, 2005
app pub date -
Oct 27, 2003
filing date -
Oct 27, 2003
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Abstract
A method is provided for the semi-synthesis of taxane intermediates useful in the preparation of paclitaxel and docetaxel from 9-dihydro-13-acetylbaccatin III. The preparation of a suitably protected baccatin III backbone from 9-dihydro-13-acetylbaccatin III, and the insertion of the phenylisoserine side chain onto the protected baccatin III from 9-dihydro-13-acetylbaccatin III to form the taxane derivatives, paclitaxel and docetaxel is disclosed.
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