Separation and purification method for dalbavancin
A technology for separation and purification of dalbavancin, applied in peptide preparation methods, chemical instruments and methods, organic chemistry, etc., to achieve the effect of short purification cycle and no pollution cost
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Embodiment 1
[0025] Measure 40 mg / ml crude dalbavancin (58% purity) and dissolve it in 20% ethanol solution, add a certain amount of HCl to dissolve, control the pH value of the solution at 2-5, and perform ultrasonic treatment. After the solution is clarified, filter it with a 0.45μm filter membrane and collect the filtrate for later use. Using 4.6×250mm chromatographic column, Polymer microspheres (produced by Suzhou Nanomicro Technology Co., Ltd.) are used as chromatography column packing with a packed column volume of 4.2ml. Before loading the sample, perform pre-column pretreatment on the chromatographic column, first remove impurities from the high-concentration organic phase, and then balance with the organic phase with a concentration lower than 20%. Then use 0.1% phosphoric acid aqueous solution and methanol solution as mobile phases for gradient elution, and the flow rate is controlled at 1 ml / min. The gradient elution process is as follows: first wash 8 column volumes with a mo...
Embodiment 2
[0028] Measure 40mg / ml crude dalbavancin (58% purity) and dissolve it in 20% ethanol solution, add a certain amount of HCl to dissolve, the pH value of the solution is controlled at 2-5, ultrasonic treatment, after the solution is clear, use a pore size of Filter with 0.45μm filter membrane and collect the filtrate for later use. Using 4.6×250mm chromatographic column, Polymer microspheres (produced by Suzhou Nanomicro Technology Co., Ltd.) are used as chromatography column packing with a packed column volume of 4.2ml. Before loading the sample, perform pre-column pretreatment on the chromatographic column, first remove impurities from the high-concentration organic phase, and then balance with the organic phase with a concentration lower than 20%. Then use 0.1% phosphoric acid aqueous solution and methanol solution as mobile phases for gradient elution, and the flow rate is controlled at 1 ml / min. The gradient elution process is as follows: first wash 8 column volumes with a...
Embodiment 3
[0030] Measure 40mg / ml crude dalbavancin (58% purity) and dissolve it in 20% ethanol solution, add a certain amount of HCl to dissolve, the pH value of the solution is controlled at 2-5, ultrasonic treatment, after the solution is clear, use a pore size of Filter with 0.45μm filter membrane and collect the filtrate for later use. Using 4.6×250mm chromatographic column, Polymer microspheres (produced by Suzhou Nanomicro Technology Co., Ltd.) are used as chromatography column packing with a packed column volume of 4.2ml. Before loading the sample, perform pre-column pretreatment on the chromatographic column, first remove impurities from the high-concentration organic phase, and then balance with the organic phase with a concentration lower than 20%. Then use 0.1% phosphoric acid aqueous solution and methanol solution as mobile phases for gradient elution, and the flow rate is controlled at 1 ml / min. The gradient elution process is as follows: first wash 8 column volumes with a...
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