Photo-mediated [1, 3]-Carbonyl shift of β-Ketocarbonyls
作者:Wenzhao Zhang、Yao Li、Sanzhong Luo
DOI:10.1016/j.jphotochem.2020.112553
日期:2020.6
An organic amine mediated photolytic [1,3]-benzoyl migration of β-benzoyl carbonylcompounds was reported. This migration was achieved by Norrish-Yang cyclization and retro-aldol reaction under black light (365 nm) or visible light irradiation. This photolytic protocol provides an alternative approach to the synthesis of 1,5-dicarbonyl compounds. By chiral primary amine catalysis, a kinetic resolution
Photoprotection compositions comprising tocopherol sorbate and an anti-inflammatory agent
申请人:THE PROCTER & GAMBLE COMPANY
公开号:EP0313303A2
公开(公告)日:1989-04-26
Disclosed are pharmaceutical compositions comprising tocopherol sorbate and an anti-inflammatory agent which are useful for topical application to prevent damage to skin caused by acute or chronic UV exposure. Combinations of tocopherol sorbate, an anti-inflammatory agent, and a sunscreen are also disclosed.
Also disclosed is a method for using these compositions topically to prevent damage to skin caused by acute or chronic UV exposure.
The present invention involves photoprotective compositions which are useful for topical application to prevent damage to skin caused by acute or chronic exposure to ultraviolet light comprising chelating agents. Also involved are compositions comprising chelating agents together with anti-inflammatory agents, sunscreening agents, and/or radical scavenging agents. Methods for using such compositions to prevent damage to skin caused by acute or chronic exposure to ultraviolet light are also involved.