High-efficiency separation and purification method for pneumocandin
A technology of separation and purification, nemocontin, applied in the direction of peptides, etc., can solve the problems of difficult environmental control, low process efficiency, low sample load, etc., to solve the problems of insufficient selectivity, good repeatability, and fast separation speed.
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[0029] Example 1
[0030] 3g of Numocantine crude product, dissolved in 30mL ethanol-water, injection volume 30mL, loading volume 1%; use carboxyl-bonded hydrophilic silica gel column (column specification 50×250mm, particle size 10μm, pore size Packing mass 300g), flow rate 80mL / min; organic solvent is ethanol, in which the volume ratio of organic solvent / water is 90 / 10; UV detector, detection wavelength 210nm, from the peak of the target peak, start to pick up the distillate until the peak returns to the baseline and stop After purification, a product with a purity of Numocantine B0 of over 99.1% and an impurity C0 of less than 0.1% can be obtained.
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[0031] Example 2
[0032] Other conditions are the same as in Example 1, except that the pore size of the filler is After purification, a product with a purity of Numocantine B0 of 99.8% or more and an impurity C0 of less than 0.1% can be obtained.
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[0033] Example 3
[0034] Other conditions are the same as in Example 1, except that a carboxyl hydrophilic silica gel column (column size 50×1000mm, particle size 10μm, pore size The packing mass is 1.2kg). After purification, a product with a purity of Numocantine B0 of more than 99.5% and an impurity C0 of less than 0.1% can be obtained.
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