Ascorbic acid derivatives and cosmetic thereof

Abstract

Provided are novel ascorbic acid derivatives which have the excellent functions inherent to ascorbic acid, such as collagen production promoting effect and moisturizing effect, and which are stable even when stored for a long period of time and show little decrease in activity, as well as cosmetics, collagen production promoters and hyaluronic acid production promoters containing the ascorbic acid derivative, wherein the ascorbic acid derivatives are represented by the following general formula (1), (3) or (4): [In formula (1), (3), or (4), R1 is —(CH2)n—* (n is an integer of 2 to 4), —CH2CH(OH)CH2—* (* represents the position of bonding to the O at the 2nd position of the ascorbic ring), or a bismethyloxetane group; R2 and R8 are hydrogen, —COR4, an alkyl group, or a benzyl group; R4 is an alkyl group having 1 to 22 carbon atoms; and in formula (3), R5 and R6 are hydrogen, a methyl group, or a phenyl group.].

Dependencies are inferred from the claim text.