Polyhydroxy curcumins having antioxidant activity
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United States of America Patent
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May 31, 2005
Grant Date -
Nov 20, 2003
app pub date -
Apr 18, 2001
filing date -
Apr 18, 2001
priority date (Note) -
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Abstract
This invention relates to novel polyhydroxy curcumins of the formula (I), wherein R and R1 may be same or different and are selected from H, OH and OCH3. This invention also includes a process for synthesising the above polyhydroxy curcumins by reacting substituted aromatic alhehydes with a diketone in the presence of boron oxide, alkyl borate and a primary or secondary amine catalyst. If desired, the resulting compounds can be deprotected by known means. These compounds are used as anti-oxidants.
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