HPLC analysis method of bortezomib related substances
Technical Field
The invention belongs to the technical field of drug analysis, and particularly relates to an HPLC (high performance liquid chromatography) analysis method for related substances of (1R) - (S) -pinanediol-1-ammonium trifluoroacetate-3-methylbutane-1-borate.
Background
(1R) - (S) -pinanediol-1-ammonium trifluoroacetate-3-methylbutane-1-borate (SCR-3081) is a raw material for synthesizing bortezomib and is also an important medical intermediate, and the structural formula is shown as the following formula I:
the (1R) - (S) -pinanediol-1-trifluoroacetate ammonium-3-methylbutane-1-boronic acid ester (SCR-3081) typically presents 2 larger isomeric impurities: SCR-5220(SCR-3081 enantiomer) and SCR-5221(SCR-3081 diastereomer). Wherein the structural formula of the SCR-5220 is shown as the following formula II, and the structural formula of the SCR-5221 is shown as the following formula III:
since the isomer impurities of SCR-3081 continuously participate in the reaction in the subsequent steps to form a plurality of corresponding impurities, thereby affecting the quality of the anti-tumor drug bortezomib, it is necessary to establish an analysis method of SCR-3081, control the content of the isomer impurities, improve the purity of the target product, and further improve the quality of the bortezomib drug.
Meanwhile, as the (1R) - (S) -pinanediol-1-ammonium trifluoroacetate-3-methylbutane-1-borate (SCR-3081) exists in the form of trifluoroacetate, gasification is difficult, and ultraviolet absorption of SCR-3081 and isomer impurities SCR-5220 and SCR-5221 of the SCR-3081 is weak, a common HPLC analysis method is adopted, and the method has poor separation degree, low response and larger error.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an HPLC analysis method of bortezomib related substances, which can quickly and accurately realize qualitative, quantitative and isomer analysis.
The invention discloses an HPLC analysis method of bortezomib related substances, which is characterized by comprising the following steps:
(1) carrying out derivatization treatment on related substances of bortezomib by using benzoyl chloride to obtain a derivatization product;
(2) a reversed-phase chiral chromatographic column is adopted, a mobile phase is a mixed solution of a buffer salt solution containing phosphate and an organic solvent, and a high performance liquid chromatography-ultraviolet detector is adopted to detect the derivatization product.
Wherein in the step, the bortezomib related substances are mainly selected from the following structures:
the derivatization treatment in the step (1) is that related substances of bortezomib react with benzoyl chloride in the presence of a catalyst and a reaction solvent to obtain a derivatization product;
further, the catalyst is DBU; the reaction solvent is one or two selected from tetrahydrofuran, acetonitrile and chloroform.
Wherein the derivatized product is selected from the group consisting essentially of the following structures:
the dosage of the organic solvent in the derivatization treatment process is 15-500 mL, preferably 15-300 mL, and more preferably 30-150 mL per 100mg of the organic solvent used by the related substances of the boric acid zomib.
The reaction temperature in the derivatization treatment process is 25-65 ℃, and preferably 45-65 ℃.
The volume of benzoyl chloride used by each 100mg of bortezomib related substances in the derivatization treatment process is 10-200 mul, preferably 10-80 mul, and further preferably 10-50 mul.
In the derivatization treatment process, the volume of DBU used per 100mg of bortezomib is 50-500 mul, and more preferably 100-500 mul.
The reversed-phase chiral chromatographic column in the step 2 is a polysaccharide derivative normal-phase coating type chiral chromatographic column.
The buffer salt in the phosphate-containing buffer salt solution in the step 2 is selected from one or more of disodium hydrogen phosphate, dipotassium hydrogen phosphate, sodium dihydrogen phosphate and potassium dihydrogen phosphate.
The pH value of the phosphate buffer solution in the step 2 is 2.0-7.0, and preferably 3.0-6.0.
The organic solvent in the derivatization treatment process is one or two of tetrahydrofuran, acetonitrile and chloroform.
The organic solvent in the step 2 is one or two of tetrahydrofuran, acetonitrile and chloroform.
The volume proportion of the organic solvent in the mobile phase in the step 2 is 25-75%, preferably 30-60%, and more preferably 35-55%.
When the high performance liquid chromatography-ultraviolet detector in the step (2) is used for detection, the column temperature is 15-50 ℃, and the preferred column temperature is
20-30 ℃; the flow rate of the mobile phase is 0.1-1.0 ml/min, and the preferred flow rate is 0.4-0.6 ml/min; detection of ultraviolet detector
The detection wavelength is 220-260 nm, and the preferred detection wavelength is 230-240 nm.
The invention provides an analysis method of bortezomib related substances, which is characterized in that the analysis is carried out on the derivatized bortezomib related substances by utilizing high performance liquid chromatography, the derivatization operation is simple, the derivatization product is single, and the separation degree is good, so that SCR-3081 and isomer impurities SCR-5220 and SCR-5221 thereof can be simply, rapidly and stably detected, and the product quality can be effectively controlled.
Drawings
FIG. 1: HPLC detection blank solution chromatogram in example 1
FIG. 2: HPLC detection System suitability Profile in example 1
FIG. 3: HPLC detection profile of SCR-3081 in example 1
Detailed Description
The invention is further explained below by way of examples, which should not be construed as limiting the scope of the invention.
Example 1:
1) chromatographic conditions are as follows:
the instrument comprises the following steps: agilent1260HPLC
Mobile phase: 10mmol/L of K2HPO4Buffer (pH adjusted to 5.0 with phosphoric acid) -acetonitrile (55: 45 by volume)
A chromatographic column:
OX-3(4.6×150mm,3μm)
detection wavelength: 235nm
Column temperature: 25 deg.C
Flow rate: 0.4ml/min
Sample introduction amount: 5ul
2) Sample preparation:
taking about 50mg of (1R) - (S) -pinanediol-1-ammonium trifluoroacetate-3-methylbutane-1-borate (SCR-3081), precisely weighing, placing in a 25ml measuring flask, adding 20 mu l benzoyl chloride, shaking up, adding 50 mu l DBU (1,8 diazabicyclo [5,4,0] undec-7-ene), adding 15ml acetonitrile, carrying out ultrasonic dissolution, reacting in a water bath at 50 ℃ for 30min, cooling to room temperature, diluting with methanol to a scale, shaking up, filtering, and taking a subsequent filtrate as a sample solution.
Accurately weighing SCR-5220 and SCR-5221 reference substances respectively at 5mg, placing in a 25ml measuring flask, adding 15ml benzoyl chloride-acetonitrile solution (20 μ l benzoyl chloride is placed in a 200ml measuring flask, adding acetonitrile to dilute to scale, shaking up) and ultrasonically dissolving, adding 50 μ l DBU (1,8 diazabicyclo [5,4,0] undec-7-ene), reacting in a water bath at 50 ℃ for 30min, cooling to room temperature, diluting with methanol to scale, shaking up, filtering, and taking the subsequent filtrate as SCR-5220 and SCR-5221 impurity stock solutions respectively.
Accurately weighing an appropriate amount of SCR-3081, accurately adding an appropriate amount of SCR-5220 and SCR-5221 impurity stock solutions respectively according to the preparation method operation of a test solution to prepare solutions containing 2mg, 4 mug and 4 mug of SCR-3081, SCR-5220 and SCR-5221 respectively per 1ml as system applicability solutions.
3) And (3) measuring results: the blank solution chromatogram is shown in figure 1, the system applicability chromatogram is shown in figure 2, and the test sample detection chromatogram is shown in figure 3. The detection result shows that the separation degree of the SCR-3081, the SCR-5220, the SCR-5221 and other impurities is good.
Example 2:
1) chromatographic conditions are as follows:
the instrument comprises the following steps: agilent1260HPLC
Mobile phase: phosphate buffered saline (pH 3.0) -acetonitrile (volume ratio 65:35)
A chromatographic column:
OX-3(4.6×150mm,3μm)
detection wavelength: 235nm
Column temperature: 20 deg.C
Flow rate: 1.0ml/min
Sample introduction amount: 5ul
2) Sample preparation:
taking about 50mg of (1R) - (S) -pinanediol-1-ammonium trifluoroacetate-3-methylbutane-1-boric acid ester (SCR-3081), precisely weighing, placing in a 25ml measuring flask, adding 20, shaking up benzoyl chloride, adding 50 acyl chloride, shaking up (1,8 diazabicyclo [5,4,0] undec-7-ene), adding 15ml acetonitrile, carrying out ultrasonic dissolution, reacting in a water bath at 60 ℃ for 30min, cooling to room temperature, diluting to a scale with methanol, shaking up, filtering, and taking a subsequent filtrate as a sample solution.
Accurately weighing SCR-5220 and SCR-5221 reference substances respectively at 5mg, placing in a 25ml measuring flask, adding 15ml benzoyl chloride-acetonitrile solution (20 solution benzoyl chloride is placed in a 200ml measuring flask, adding acetonitrile to dilute to scale, shaking up) for ultrasonic dissolution, adding 50ml acetonitrile dilute (1,8 diazabicyclo [5,4,0] undec-7-ene), reacting in a water bath at 50 ℃ for 30min, cooling to room temperature, diluting with methanol to scale, shaking up, filtering, and taking the subsequent filtrate as SCR-5220 and SCR-5221 impurity stock solutions respectively.
Accurately weighing an appropriate amount of SCR-3081, accurately adding an appropriate amount of SCR-5220 and SCR-5221 impurity stock solutions respectively according to the preparation method operation of a test solution to prepare solutions containing 2mg, 4mg and 4mg of SCR-3081, SCR-5220 and SCR-5221 respectively per 1ml as system applicability solutions.
3) And (3) measuring results: the detection result shows that the separation degree of the SCR-3081, the SCR-5220, the SCR-5221 and other impurities is good.
Example 3:
1) chromatographic conditions are as follows:
the instrument comprises the following steps: agilent1260HPLC
Mobile phase: phosphate buffer solution (pH 6.5) -acetonitrile (40:60)
A chromatographic column:
OX-3(4.6×150mm,3μm)
detection wavelength: 235nm
Column temperature: 30 deg.C
Flow rate: 0.2ml/min
Sample introduction amount: 5ul
2) Sample preparation:
taking about 50mg of (1R) - (S) -pinanediol-1-ammonium trifluoroacetate-3-methylbutane-1-borate (SCR-3081), precisely weighing, placing in a 25ml measuring flask, adding 20 mu l benzoyl chloride, shaking up, adding 50 mu l DBU (1,8 diazabicyclo [5,4,0] undec-7-ene), adding 15ml acetonitrile, carrying out ultrasonic dissolution, reacting in a water bath at 45 ℃ for 30min, cooling to room temperature, diluting with methanol to a scale, shaking up, filtering, and taking a subsequent filtrate as a sample solution.
Accurately weighing SCR-5220 and SCR-5221 reference substances respectively at 5mg, placing in a 25ml measuring flask, adding 15ml benzoyl chloride-acetonitrile solution (20 μ l benzoyl chloride is placed in a 200ml measuring flask, adding acetonitrile to dilute to scale, shaking up) and ultrasonically dissolving, adding 50 μ l DBU (1,8 diazabicyclo [5,4,0] undec-7-ene), reacting in a water bath at 50 ℃ for 30min, cooling to room temperature, diluting with methanol to scale, shaking up, filtering, and taking the subsequent filtrate as SCR-5220 and SCR-5221 impurity stock solutions respectively.
Accurately weighing an appropriate amount of SCR-3081, accurately adding an appropriate amount of SCR-5220 and SCR-5221 impurity stock solutions respectively according to the preparation method operation of a test solution to prepare solutions containing 2mg, 4 mug and 4 mug of SCR-3081, SCR-5220 and SCR-5221 respectively per 1ml as system applicability solutions.
3) And (3) measuring results: the detection result shows that the separation degree of the SCR-3081, the SCR-5220, the SCR-5221 and other impurities is good.
Example 4:
1) chromatographic conditions are as follows:
the instrument comprises the following steps: agilent1260HPLC
Mobile phase: n-Hexane-trifluoroacetic acid (100: 0.1)/Anhydrous ethanol-methanol-trifluoroacetic acid (75:25:0.1) (volume ratio 90:10)
A chromatographic column:
AY-H(4.6×250mm,5μm)
detection wavelength: 254nm
Column temperature: 35 deg.C
Flow rate: 1.0ml/min
Sample introduction amount: 10ul of
2) Sample preparation:
taking about 50mg of (1R) - (S) -pinanediol-1-ammonium trifluoroacetate-3-methylbutane-1-borate (SCR-3081), precisely weighing, placing in a 25ml measuring flask, adding 20 mu l benzoyl chloride, shaking up, adding 50 mu l DBU (1,8 diazabicyclo [5,4,0] undec-7-ene), adding 15ml acetonitrile, carrying out ultrasonic dissolution, reacting in a water bath at 50 ℃ for 30min, cooling to room temperature, diluting with methanol to a scale, shaking up, filtering, and taking a subsequent filtrate as a sample solution.
Accurately weighing SCR-5220 and SCR-5221 reference substances respectively at 5mg, placing in a 25ml measuring flask, adding 15ml benzoyl chloride-acetonitrile solution (20 μ l benzoyl chloride is placed in a 200ml measuring flask, adding acetonitrile to dilute to scale, shaking up) and ultrasonically dissolving, adding 50 μ l DBU (1,8 diazabicyclo [5,4,0] undec-7-ene), reacting in a water bath at 50 ℃ for 30min, cooling to room temperature, diluting with methanol to scale, shaking up, filtering, and taking the subsequent filtrate as SCR-5220 and SCR-5221 impurity stock solutions respectively.
Accurately weighing an appropriate amount of SCR-3081, accurately adding an appropriate amount of SCR-5220 and SCR-5221 impurity stock solutions respectively according to the preparation method operation of a test solution to prepare solutions containing 2mg, 4 mug and 4 mug of SCR-3081, SCR-5220 and SCR-5221 respectively per 1ml as system applicability solutions.
3) And (3) measuring results: the detection result shows that the separation degree of the SCR-3081, the SCR-5220, the SCR-5221 and other impurities is poor.
Example 5:
1) chromatographic conditions are as follows:
the instrument comprises the following steps: agilent1260HPLC
Mobile phase: sodium acetate buffer (pH 5.0) -acetonitrile (55: 45 by volume)
A chromatographic column:
OX-3(4.6×150mm,3μm)
detection wavelength: 235nm
Column temperature: 25 deg.C
Flow rate: 0.4ml/min
Sample introduction amount: 5ul
2) Sample preparation:
taking about 50mg of (1R) - (S) -pinanediol-1-ammonium trifluoroacetate-3-methylbutane-1-borate (SCR-3081), precisely weighing, placing in a 25ml measuring flask, adding 20 mu l benzoyl chloride, shaking up, adding 50 mu l DBU (1,8 diazabicyclo [5,4,0] undec-7-ene), adding 15ml acetonitrile, carrying out ultrasonic dissolution, reacting in a water bath at 50 ℃ for 30min, cooling to room temperature, diluting with methanol to a scale, shaking up, filtering, and taking a subsequent filtrate as a sample solution.
Accurately weighing SCR-5220 and SCR-5221 reference substances respectively at 5mg, placing in a 25ml measuring flask, adding 15ml benzoyl chloride-acetonitrile solution (20 μ l benzoyl chloride is placed in a 200ml measuring flask, adding acetonitrile to dilute to scale, shaking up) and ultrasonically dissolving, adding 50 μ l DBU (1,8 diazabicyclo [5,4,0] undec-7-ene), reacting in a water bath at 50 ℃ for 30min, cooling to room temperature, diluting with methanol to scale, shaking up, filtering, and taking the subsequent filtrate as SCR-5220 and SCR-5221 impurity stock solutions respectively.
Accurately weighing an appropriate amount of SCR-3081, accurately adding an appropriate amount of SCR-5220 and SCR-5221 impurity stock solutions respectively according to the preparation method operation of a test solution to prepare solutions containing 2mg, 4 mug and 4 mug of SCR-3081, SCR-5220 and SCR-5221 respectively per 1ml as system applicability solutions.
3) And (3) measuring results: the detection result shows that the separation degree of the SCR-3081, the SCR-5220, the SCR-5221 and other impurities is poor.