Abstract: This invention relates to novel resveratrol analogs of the formula given below; wherein R, R1, R2 and R3 are: 1. R=OH, R1=R2=R3=H; 2. R=OH, R1=Br, R2=R3=H; 3. R=R1=OH, R2=R3=H; 4. R=R1=R3=H, R2=3,4,5-trihydroxybenzoyl; 5. R=R1=H, R2=R3=3,4,5-trihydroxybenzoyl; 6. R=R1=R3=H, R2=3,4-dihydroxycinnamoyl; 7. R=R1=R3=H, R2=3,4,5-trihydroxycinnamoyl; 8. R=R1=R3=H, R2=—CH2CH2N(CH3)2; 9. R=R1=R3=H, R2=—COCH2NH2.HCl. These compounds exhibited high antioxidant properties and are useful in food industry and in cosmetics. The compounds may be used in pharmaceutical composition as an antioxidant or free radical scavenger.

Abstract: The invention relates to a process for producing a fraction enriched upto 100% of 3-O-acetyl-11-keto-&bgr;-boswellic acid. An organic solvent extract of gum resin from Boswellia species is first subjected to oxidation and then acetylation or vice versa. This converts the less potent boswellic acids present in the fraction to AKBA. This treated fraction is subjected to further purification and separation by chromatographic separation techniques to enhance its purity and to remove contaminants therefrom. This process provide an access to a fraction enriched in 10-100% AKBA for therapeutic applications.

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.