| abstract |
Process for the recovery of a macrolide in substantially pure form comprising: a) treating the macrolide with water immiscible solvent followed by concentration, b) mixing with water, water miscible solvent or mixture thereof, c) performing hydrophobic interaction chromatography and collecting the fractions, d)extracting the fraction containing macrolide with water immiscible solvent followed by concentration, e) adding water miscible solvent to effect separation of impurities from the macrolide compound, f) performing silica gel chromatography and collecting the fractions, g) isolating the macrolide compound in substantially pure form. The macrolide is preferably rapamycin, tacrolimus or immunomycin. |