Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of preparation method of Choline Glycerophosphate crystal, this preparation method comprises:
(1) by Choline Glycerophosphate and the obtained mixture M 1 of alcohol mixing;
(2) by described mixture M 1 and vitriol mixing, cooled and filtered get filtrate and obtain mixture M 2;
(3) described mixture M 2 is carried out the first concentrated obtained mixture M 3;
(4) the second concentrated obtained mixture M 4 will be carried out after described mixture M 3 and organic solvent mixing;
(5) described mixture M 4 drying under reduced pressure is obtained Choline Glycerophosphate crystal.
In the present invention, the consumption of alcohol can be selected in wide scope, and in order to enable Choline Glycerophosphate dissolve quickly, preferably, relative to the Choline Glycerophosphate of 100 weight parts, the consumption of alcohol is 450-550 weight part.
Certainly, the concrete kind of alcohol can be selected in wide scope, can being selected from one or more in methyl alcohol, ethanol, propyl alcohol and ethylene glycol, dissolving more fully to enable Choline Glycerophosphate, preferably, alcohol is selected from one or more in methyl alcohol, ethanol and propyl alcohol.
Similarly, in step (1), the temperature of mixing and mode all can be selected in wide scope, in order to enable Choline Glycerophosphate dissolve quickly, preferably, in step (1), the temperature of mixing is 35-40 DEG C, and is mixed into and is uniformly mixed.
Meanwhile, the time be uniformly mixed does not do special restriction yet, and preferably, the churning time of mixing is 20-40min.
In the present invention, in step (2), the concrete kind of vitriol has diversity, can be sodium sulfate and potassium sulfate, also can be magnesium sulfate and ammonium sulfate, can also be copper sulfate and zinc sulfate, has lower water-intake rate to make the Choline Glycerophosphate crystal obtained, preferably, vitriol is selected from one or more in sodium sulfate, potassium sulfate, magnesium sulfate and copper sulfate.
Certainly, the consumption of vitriol also can be selected in wide scope, and in order to make the aerial water-intake rate of Choline Glycerophosphate crystal that obtains lower, preferably, relative to the mixture M 1 of 100 weight parts, the consumption of vitriol is 30-40 weight part.
Meanwhile, in step (2), the temperature and time of cooling all can be selected in wide scope, and in order to make crystal generate faster, preferably, cooling at least meets the following conditions: cooling temperature is 25-30 DEG C, and cooling time is 30-50min.
In the present invention, in step (3), the first condition concentrated all can be selected in wide scope, in order to make crystal separate out sooner, preferably, the first condition concentrated is: thickening temperature is 30-40 DEG C, concentrated pressure is 40-60KPa, and concentration time is 1h-3h.
Similarly, in step (4), the consumption of organic solvent can be selected in wide scope, in order to make the aerial water-intake rate of Choline Glycerophosphate crystal that obtains lower, preferably, relative to the described mixture M 3 of 100 weight parts, in step (4), the consumption of described organic solvent is 50-70 weight part.
Certainly, the kind of organic solvent has diversity, can be one or more in ethanol, acetone and polyvinylpyrrolidone, and in order to make the aerial water-intake rate of Choline Glycerophosphate crystal that obtains lower, preferably, organic solvent is ethanol and/or acetone.
Certainly, in step (4), the second temperature and time concentrated all can be selected in wide scope, and in order to make crystal separate out faster, preferably, the second temperature concentrated is lower than 40 DEG C, and the second time concentrated was 1h-2h;
In the present invention, the pressure and temperature of empty drying under reduced pressure all can be selected in wide scope, in order to make the aerial water-intake rate of Choline Glycerophosphate crystal that obtains lower, preferably, the condition of drying under reduced pressure is: drying pressure is 0.5-0.8MPa, time of drying is 1-4h, and drying temperature is 35-45 DEG C.
Below will be described the present invention by embodiment.In following examples, water ratio parameter is recorded by weighting method, and Choline Glycerophosphate is purchased from Wuhan Merck medication chemistry company limited.
Embodiment 1
(1) at 38 DEG C, Choline Glycerophosphate and methyl alcohol (weight ratio is 100:500) mix and blend 30min are obtained mixture M 1;
(2) mixture M 1 and sodium sulfate (weight ratio is 100:35) are mixed, at 28 DEG C, cool 40min, then carry out the first filtration and get filtrate obtaining mixture M 2;
(3) under 35 DEG C of conditions with 50KPa, mixture M 2 is carried out the first concentrated 2h and obtain mixture M 3;
(4) by mixed to mixture M 3 and ethanol (weight ratio is 100:60) be incorporated in 35 DEG C at carry out the second concentrated 1.5h and obtain mixture M 4;
(5) at 40 DEG C, mixture M 4 dry 3h under 0.7MPa is obtained Choline Glycerophosphate crystal A1.
Embodiment 2
(1) at 35 DEG C, Choline Glycerophosphate and ethanol (weight ratio is 100:450) mix and blend 40min are obtained mixture M 1;
(2) mixture M 1 and potassium sulfate (weight ratio is 100:35) are mixed, at 25 DEG C, cool 30min, then carry out the first filtration and get filtrate obtaining mixture M 2;
(3) under 30 DEG C of conditions with 40KPa, mixture M 2 is carried out the first concentrated 1h and obtain mixture M 3;
(4) by mixed to mixture M 3 and acetone (weight ratio is 100:50) be incorporated in 30 DEG C at carry out the second concentrated 1h and obtain mixture M 4;
(5) at 35 DEG C, mixture M 4 dry 1h under 0.5MPa is obtained Choline Glycerophosphate crystal A2.
Embodiment 3
(1) at 40 DEG C, Choline Glycerophosphate and propyl alcohol (weight ratio is 100:550) mix and blend 20min are obtained mixture M 1;
(2) mixture M 1 and magnesium sulfate (weight ratio is 100:40) are mixed, at 30 DEG C, cool 50min, then carry out the first filtration and get filtrate obtaining mixture M 2;
(3) under 40 DEG C of conditions with 60KPa, mixture M 2 is carried out the first concentrated 3h and obtain mixture M 3;
(4) by mixed to mixture M 3 and acetone (weight ratio is 100:70) be incorporated in 38 DEG C at carry out the second concentrated 2h and obtain mixture M 4;
(5) at 45 DEG C, mixture M 4 dry 4h under 0.8MPa is obtained Choline Glycerophosphate crystal A3.
Embodiment 4
Choline Glycerophosphate crystal A4 is obtained according to the method for embodiment 1, unlike, in step (2), sodium sulfate is changed to copper sulfate.
Comparative example 1
Choline Glycerophosphate crystal B1 is obtained according to the method for embodiment 1, unlike, do not carry out the process of step (3).
Comparative example 2
Choline Glycerophosphate crystal B2 is obtained according to the method for embodiment 1, unlike, do not carry out the process of step (4).
Test example 1
By Choline Glycerophosphate crystal A1-A3 prepared by commercially available Choline Glycerophosphate S (purchased from Wuhan Merck medication chemistry company limited) and the present invention, B1-B2 weighs and obtains initial weight m1, then being placed on atmospheric moisture is 2h in the air of 30%, weigh weight m2 after obtaining absorbing water, water-intake rate (w/%)=[(m2-m1)/m1] × 100%.
Table 1
Numbering |
Water-intake rate (w/%) |
A1 |
1.9 |
A2 |
1.8 |
A3 |
1.8 |
A4 |
1.9 |
B1 |
12.2 |
B2 |
13.4 |
S |
16.6 |
As shown in Table 1, after Choline Glycerophosphate crystal provided by the invention places 2h in atmosphere, water-intake rate is very low, relative to A1-A4, the water-intake rate of S obviously increases, describe the aerial water-intake rate of Choline Glycerophosphate crystal prepared by present method less, thus purity is higher, drug effect is stronger; Also increase to some extent relative to the water-intake rate of A1-A4, B1-B2, describe between preparation process provided by the invention (3) and (4) and there occurs synergy, all contribution has been made to the water-intake rate reducing Choline Glycerophosphate crystal.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.