title: Aminopyridine-benzoxanthene enantioselective receptor for sulfonylamino acids.
abstract: Combination of a cis-tetrahydrobenzoxanthene skeleton with a benzoxazole and an amidopyridine provides an enantioselective receptor for sulfonylamino acids with chiral recognitions of up to 18. The structure of the complex between receptor 1 and the leucine triflate is known by X-ray analysis. The receptor racemic mixture can be suitably resolved through crystalization in the presence of leucine triflate as guest. Receptor 1 can be used for the enantioselective extraction of sulfonylamino acids from aqueous solutions of their salts.
authors.affiliation: Department of Organic Chemistry, University of Salamanca, Plaza de los Caídos, 1-5, Salamanca 37008, Spain.
authors.forename: Ana I
authors.initials: AI
authors.lastname: Oliva
authors.forename: Luis
authors.initials: L
authors.lastname: Simón
authors.forename: Francisco M
authors.initials: FM
authors.lastname: Muñiz
authors.forename: Francisca
authors.initials: F
authors.lastname: Sanz
authors.forename: Joaquín R
authors.initials: JR
authors.lastname: Morán