Palladium-Catalyzed Ullmann-Type Reductive Homocoupling of Iodoaryl Glycosides
摘要:
A catalytic synthesis of novel biaryl-linked divalent glycosides was achieved using an electroreductive palladium-catalyzed iodoaryl-iodoaryl coupling reaction. This new method was optimized for the synthesis of divalent biaryl-linked mannopyranosides that was subsequently generalized toward several carbohydrate substrates with yields up to 96%.
XYLOSIDE DERIVATIVES OF RESVERATROL FOR USE THEREOF IN COSMETICS
申请人:L'OREAL
公开号:US20210052479A1
公开(公告)日:2021-02-25
The present invention relates to the use of a compound of formula (I): in which R1, R2 and R3 independently denote: —a group of formula (II), or —a hydrogen atom H, it being understood that at least one of the radicals R1, R2, R3 denotes a group of formula (II); and also the salts thereof, the solvates thereof, and/or the isomers thereof, for preventing and/or cosmetically treating the signs of skin aging.