Aminopyridine-benzoxanthene enantioselective receptor for sulfonylamino acids.
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.
Oliva
Ana I
AI
Department of Organic Chemistry, University of Salamanca, Plaza de los Caídos, 1-5, Salamanca 37008, Spain.
Simón
Luis
L
Muñiz
Francisco M
FM
Sanz
Francisca
F
Morán
Joaquín R
JR