abstract |
FIELD: chemistry. n SUBSTANCE: disclosed is a method of purifying a compound of formula 1 which includes the following steps: (1) adding a raw compound 1 to a macroporous adsorption resin, (2) washing the macroporous adsorption resin with an aqueous solution, an organic solvent or a mixed solution of an organic solvent and water, (3) elution using the aqueous solution, organic solvent or mixed solution of an organic solvent and water. n EFFECT: improved method. n 9 cl, 7 dwg, 12 ex |