title: Modulation of photodeprotection by the sunscreen protocol.
abstract: A protocol for the selective photoremoval of alcohol protecting groups modulated by the presence of auxiliary light absorbing molecules is presented. Thus, by this method, a single light source was used to selectively remove a specific protecting group in the presence of another chromophore with a lower molar absorption coefficient. The use of a molecular sunscreen, either internal or external, was found to be crucial to achieve high selectivities.
authors.affiliation: Department of Chemistry, Ben-Gurion University of the Negev , Beer-Sheva, Israel , 84105.
authors.forename: Or
authors.initials: O
authors.lastname: Eivgi
authors.forename: Efrat
authors.initials: E
authors.lastname: Levin
authors.forename: N Gabriel
authors.initials: NG
authors.lastname: Lemcoff