T. Mohammad et H. Morrison, LIGHT-MEDIATED CYCLIZATION OF )-3-(5-[6-HYDROXY-7-METHOXY]BENZOFURANYL)PROPENOIC ACID, A WATER-SOLUBLE PRECURSOR OF 8-METHOXYPSORALEN, Photochemistry and photobiology, 59(2), 1994, pp. 248-251
The title compound is a stable, water-soluble ''pro-drug'' for 8-metho
xypsoralen, which converts to psoralen upon photolysis with UVA light.
The process involves the photolytic formation of a cis isomer that la
ctonizes in a dark reaction.