|
Chiral drugs and pesticides two diastereoisomers often have different biological activity and toxicity, and even having the opposite potential drug reactions, Isolation and Preparation of enantiomers of chiral drugs and pesticides significance. Paper the use of supercritical fluid chromatography (SFC) and high performance liquid chromatography (HPLC), respectively, in the two kinds of polysaccharide chiral column several typical chiral pesticides Resolution of enantiomers. Firstly, using both SFC and HPLC chromatography system, split in two commercialized polysaccharide chiral column Chiralpak IB and Chiralcel OJ triadimefon has tebuconazole, tebuconazole, uniconazole myclobutanil evil imidazole, imazalil 7 triazole chiral pesticides. The mobile phase polar additives, the volume fraction of the chiral stationary phase and temperature chiral separation. The last triadimefon, tebuconazole, uniconazole, myclobutanil evil imidazole baseline separation on Chiralpak IB, and tebuconazole imazalil baseline separation on Chiralcel OJ. SFC chromatography system, the maximum separation column Chiralpak IB were myclobutanil 15.47, and triadimefon 1.28, hexaconazole 5.25 Tebuconazole 1.85, ene Uniconazole 2.28, 1.06 and 0.735 Difenoconazole. Myclobutanil hexaconazole, the imazalil tebuconazole uniconazole Chiralcel OJ column separation were 1.02,0.86,3.98,5.8 and 1.42. By HPLC chromatography system, myclobutanil oxazole, imazalil Chiralpak IB column the maximum separation of 9.11 and 0.75, the maximum separation column Chiralcel OJ compared to 2.12 and 3.52. Papers, respectively, in the two commercialization of cellulose derivative chiral column Chiralpak IB ChiralcelOJ studied separation the trichloro insecticidal esters, Benalaxyl diclofop, B furosemide yellow grass chiral pesticide enantiomers. The mobile phase polar additives, the volume fraction of the chiral stationary phase, temperature, and pressure for chiral separation. Finally, four kinds of drugs to achieve a baseline separation. SFC chromatography system, trichloro insecticidal esters, benalaxyl, B furosemide yellow grass, diclofop Chiralpak IB column separation 1.47,4.68,3.03 and 4.41, respectively. Benalaxyl diclofop Chiralcel OJ column maximum separation of 3.18 and 1.18, respectively. HPLC chromatography system Benalaxyl, separation of diclofop Chiralpak IB column respectively 5.44 and 4.81, compared with 1.79 and 1.36, the maximum separation column Chiralcel OJ.
|