title: Selective steroid recognition by a partially bridged resorcin[4]arene cavitand.
abstract: The partially bridged resorcin[4]arene cavitand featuring a cleft-shaped recognition site formed by two anti-quinoxaline bridges and four convergent HO-groups was prepared in three steps and characterised by X-ray crystallography; cavitand was found to be a selective receptor for steroidal substrates in CDCl3, with the best binding observed for steroids with a flat A-ring and two H-bonding sites on rings A and C/D.
authors.affiliation: Laboratorium für Organische Chemie, ETH-Hönggerberg, CH-8093 Zürich, Switzerland. martina.cacciarini@unifi.it
authors.forename: Martina
authors.initials: M
authors.lastname: Cacciarini
authors.forename: Vladimir A
authors.initials: VA
authors.lastname: Azov
authors.forename: Paul
authors.initials: P
authors.lastname: Seiler
authors.forename: Hermann
authors.initials: H
authors.lastname: Künzer
authors.forename: François
authors.initials: F
authors.lastname: Diederich
mesh_terms: D018360:Crystallography, X-Ray; D008958:Models, Molecular; D015394:Molecular Structure; D012118:Resorcinols / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry*
chemical_list: D012118:Resorcinols; D013256:Steroids