Abstract:
A chiral stationary phase of LC (liquid chromatography) using cefaclor derivative which is an antibiotics suppressing biosynthesis of cell wall is provided to isolate a racemic compound containing a pharmaceutical product having optical activity. A chiral solid phase (CSP1) based on a cepaclo which is cephalosporin based antibiotics is denoted by the chemical formula 1. In the chemical formula 1, R is hydrogen, one or two methyl group, one or two methoxy group or t-butyl group, nitro group, and chloro group. The chiral solid phase(CSP1) ia a novel pirkle chiral solid phase which is applicable to the LC. A method for manufacturing the chiral solid phase of the chemical formula 1 comprises: a step of condensing a compound of the chemical formula 3 with pharmaceutical product having optical activity of the chemical formula 2 to obtain a compound 4; a step of using EEDQ (2-ethoxy-1-ethoxycarbonyl-1,2-dihydroquinoline); and a step of reacting the compound 4 with a silica gel to obtain the chiral solid phase of the chemical formula 1. The chiral column is filled with the chiral solid phase of the chemical formula 1.