Polyethoxylated ascorbic acid derivatives as a novel antioxidant and process forpreparing thereof

摘要

Provided with a novel ascorbic acid derivative represented by the formula (I) and a method for preparing the same:wherein R1 and R2 are different from each other and, independently H or -CH2CH2-(O-CH2-CH2)n-OR3, wherein n is an integer from 2 to 400; and R3 is a lower alkyl group having 1 to 10 carbon atoms. The novel ascorbic acid derivatives of this invention have excellent characteristics such as long-lasting anti-oxidation effect, high solubility in both water and organic solvents, and high stability in an aqueous solution. Furthermore, the novel ascorbic acid derivatives are useful for feed, food, cosmetic and pharmaceutical products due to their low toxicity and high thermal stability.