Novel polyhydroxy curcumins having antioxidant activity
申请人:——
公开号:US20030216600A1
公开(公告)日:2003-11-20
This invention relates to novel polyhydroxy curcumins of the formula (I), wherein R and R
1
may be same or different and are selected from H, OH and OCH
3
. 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.
US6900356B2
申请人:——
公开号:US6900356B2
公开(公告)日:2005-05-31
[EN] NOVEL POLYHYDROXY CURCUMINS HAVING ANTIOXIDANT ACTIVITY<br/>[FR] NOUVELLES POLYHYDROXYCURCUMINES A EFFET ANTIOXYDANT
申请人:LAILA IMPEX
公开号:WO2002083614A1
公开(公告)日:2002-10-24
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 OCH¿3?. 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.