The invention is directed to a process for the synthesis of curcumin and curcumin-related compounds by reacting the enol form of a 2,4-diketone with a monocarbocyclic aldehyde in the presence of an organic amine catalyst. The reactants are dissolved in a highly polar, aprotic organic solvent. The curcumin-related product is recovered in crystalline form by precipitation from the reaction mass and solvent recrystallization.
This invention relates to novel polyhydroxy curcumins of the formula (I), wherein R and R.sup.1 may be same or different and are selected from H, OH and OCH.sub.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.
The present invention relates to improved methods for achieving the synthesis of 1,7-diaryl-1,6-heptadiene-3,5-diones, and in particular curcumin and its analogues. The invention provides a process for synthesizing such compounds in substantial yield and purity using environmentally benign processes and materials. The invention also relates to the use of such synthesized products in the treatment of Alzheimer's Disease and other diseases.
The instant invention provides a combination of multiple nutrients useful to reduce colon rectal cancer in a mannalian or human subject. Further, the combination provides synergistic ratios of the useful nutrients.
