title: Impact of normal-phase gradient elution in chiral chromatography: a novel, robust, efficient and rapid chiral screening procedure.
abstract: Novel normal-phase gradient systems have been employed for fast high-throughput chiral analyses of Discovery compounds in our research laboratories in Eli Lilly and Company. In this report, we describe an automated screening approach based on gradient elution, in order to achieve accurate enantiomeric excess determinations, and chiral separations when needed, in the shortest possible timeframe. Baseline resolution of enantiomers has been obtained for over 85% of the samples so tested. For the remaining cases, complete enantioseparation by isocratic optimisation is generally achieved in a single shot. This technique has been proven to be robust and is now standard operating procedure at our analytical research laboratories.
authors.affiliation: European Analytical Technologies, Centro de Investigacíon Básica, Lilly S.A., Avenida de la Industria 30, 28108 Alcobendas, Spain. de_la_puente_maria_luz@lilly.com
authors.forename: María
authors.initials: M
authors.lastname: de la Puente Luz
authors.forename: Craig T
authors.initials: CT
authors.lastname: White
authors.forename: Alfonso
authors.initials: A
authors.lastname: Rivera-Sagredo
authors.forename: John
authors.initials: J
authors.lastname: Reilly
authors.forename: Keith
authors.initials: K
authors.lastname: Burton
authors.forename: Georgina
authors.initials: G
authors.lastname: Harvey
mesh_terms: D002626:Chemistry, Pharmaceutical; D002853:Chromatography, Liquid / Q000379:methods*; D013237:Stereoisomerism