CN113817014B - Saponin monomeric compound, separation method thereof and application of saponin monomeric compound in preparation of injection Xuesaitong (freeze-dried) medicine - Google Patents
Saponin monomeric compound, separation method thereof and application of saponin monomeric compound in preparation of injection Xuesaitong (freeze-dried) medicine Download PDFInfo
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Abstract
The invention provides a saponin monomeric compound which is shown as a formula (I). Compared with the prior art, the invention further separates and develops the panax notoginseng saponins to obtain a novel saponin monomer, and the effect of the saponin monomer on the aspect of cardiovascular is better than that of the existing panax notoginseng saponins drugs and monomers.
Description
Technical Field
The invention belongs to the technical field of medicines, and particularly relates to a saponin monomer new compound, a separation method thereof and application thereof in preparation of a Xuesaitong (freeze-dried) medicine for injection.
Background
Pseudo-ginseng is the dry root of a perennial herb plant (Panax notoginseng (Burk) F.H.Chen) in Araliaceae, is mainly produced in Yunnan, Guangxi and other places, is one of the genuine medicinal materials in Yunnan, has the name of Shenzhongwang, has the effects of stopping bleeding, dissipating blood stasis, relieving swelling and pain, enriching and activating blood, clearing heat, calming the liver and reducing blood pressure, also has certain nourishing and strengthening effects, is famous in China and abroad, and is well received by patients.
Panax Notoginsenosides (PNS) are a general name for a series of saponins extracted from Panax notoginseng and aglycones thereof, have various and complex components, have pharmacological effects of dilating blood vessels, inhibiting platelet aggregation, prolonging blood coagulation time, reducing blood fat, removing free radicals, resisting inflammation, resisting oxidation and the like, and are mainly used for treating cardiovascular and cerebrovascular diseases clinically. Part of the components of the Panax Notoginseng Saponins (PNS) are separated and confirmed, but a large number of unknown components and the effect of the panax notoginseng saponins are still unknown. To date, over 100 monomeric saponin components have been isolated and identified from PNS, such as ginsenosides Rb1, Rb2, Rb3, Rc, Rd, Re, Ro, Rh1, Rg1, Rg2, Rg3, Rg4, Rg5, notoginsenoside R1, R2, R3, R4, and the like. These saponins are mainly classified into triol type and diol type according to their aglycones. The diol type (PDS) mainly comprises panaxadiol saponins Rb1, Rb2, Rc, Rd, Rh2, etc., and the triol type (PTS) mainly comprises panaxatriol saponins Re, Rg1, Rg2, Rh1, R1, etc. The content of natural notoginsenoside is reported to be Rg1 (43.36%), Rb1 (41.08%), R1 (3.65%), Re (3.42%), Rh1 (0.22%) and other saponin 8.26% from high to low. The medicinal panax notoginseng saponins have more ginsenoside Rg1, Rb1, Rd and notoginsenoside R1 content of more than 80%, wherein the content of the ginsenoside Rb1, Rg1 and notoginsenoside R1 is more than or equal to 65%. At present, the panax notoginseng saponins can be directly purchased from the market, the purity can reach more than 98 percent, and the panax notoginseng saponins already have the standard of national formulary.
At present, panax notoginseng products produced nationwide have reached three hundred and more than three kinds, wherein the preparation of panax notoginseng saponins is developed successfully, and in particular, Panax Notoginseng Saponins (PNS) is used as a medicinal raw material, and necessary medicinal auxiliary materials are used for preparing the Xuesaitong series products of traditional Chinese medicine preparations, such as panax notoginseng saponins powder injection (Chinese patent with the publication number of CN 1067244C), panax notoginseng extract soft capsules (Chinese patent with the publication number of CN 1064258C), panax notoginseng saponins injection, Xuesaitong for injection, Xuesaitong soft capsules and the like. The marketed Xuesaitong products such as 'Sanchi Total Saponin injection', 'Xuesaitong for injection' and 'Xuesaitong Soft Capsule' are products which are prepared and produced by Kunming pharmaceutical group Limited company and take the Panax notoginsenosides as ginsenoside Rb1 (shown in formula 1), ginsenoside Rg1 (shown in formula 2) and notoginsenoside R1 (shown in formula 3) as main active ingredients, wherein the ginsenoside Rb1 is more than 30%, the ginsenoside Rg1 is more than 20% and the notoginsenoside R1 is more than 5%. The Xuesaitong products have the efficacies of activating blood and dissolving stasis, and dredging collaterals and activating collaterals, are clinically used for treating ischemic apoplexy (cerebral infarction) caused by blood stasis obstruction in the meridian recovery stage, and have the symptoms of hemiplegia, hemianesthesia, facial distortion, aphasia and the like, and become one of ten traditional Chinese medicine varieties for treating cardiovascular and cerebrovascular diseases.
With the further development of modern Chinese medicine theory research, specific components contained in the Chinese medicine are further focused and separated for confirmation, and the Chinese medicine is very effective in researching the structure-activity relationship and the influence of toxic and side effects of monomer medicines. Therefore, although more than 100 saponin monomers have been isolated and identified from PNS, a large number of unknown components still need to be further verified by human research.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a saponin monomer compound having a good cardiovascular effect, a separation method thereof, and an application thereof in the preparation of a Xuesaitong medicine for injection.
The invention provides a saponin monomer compound, which is shown as a formula (I):
the invention also provides a separation method of the saponin monomeric compound, which comprises the following steps:
s1) dissolving Notoginseng radix total saponin for injection in water, adsorbing with nonpolar macroporous adsorbent resin, and eluting with ethanol to obtain Notoginseng radix glycol saponin;
s2) dissolving the panaxadiol saponins in acetonitrile water solution for medium-high pressure preparative chromatographic separation, and performing gradient elution by using a C18 filler as a stationary phase and a mixed solvent of acetonitrile and water as a mobile phase to obtain a component Fr.A, a component Fr.B and a component Fr.C; the volume ratio of the acetonitrile to the water is (30-50): (70-50);
s3) dissolving the component Fr.B in acetonitrile water solution for semi-preparative high pressure liquid chromatography separation, and performing gradient elution by using a C18 filler as a stationary phase and a mixed solvent of acetonitrile and water as a mobile phase to obtain the saponin monomer compound shown in the formula (I); the volume ratio of the acetonitrile to the water is (28-50): (72-50).
Preferably, the nonpolar macroporous adsorption resin in the step S1) is D101 macroporous adsorption resin;
after non-polar macroporous adsorption, eluting with water, 25-35% ethanol and 70-80% ethanol in sequence, collecting 70-80% ethanol eluate, and concentrating to obtain panaxadiol saponins.
Preferably, the volume concentration of the acetonitrile in the acetonitrile water solution in the step S2) is 5-15%;
the volume concentration of the acetonitrile in the acetonitrile water solution in the step S3) is 15-25%.
Preferably, the procedure of gradient elution in step S2) is as follows, wherein acetonitrile is used as mobile phase a and water is used as mobile phase B in percentage by volume:
the mobile phase A rises from 28-32% to 33-37% in 0-15 min;
the mobile phase A rises from 33 to 37 percent to 38 to 42 percent in 15 to 40 min;
the mobile phase A is increased from 38 to 42 percent to 43 to 47 percent in 40 to 50 min;
the mobile phase A rises from 43-47% to 48-52% in 50-53 min;
keeping the mobile phase A for 48-52% in 53-70 min;
reducing the mobile phase A from 48-52% to 28-32% in 70-80 min;
the gradient elution procedure in the step S3) is as follows:
the mobile phase A rises from 25 to 30 percent to 33 to 37 percent in 0 to 20 min;
the mobile phase A rises from 33 to 37 percent to 38 to 42 percent in 20 to 45 min;
the mobile phase A rises from 38-42% to 43-47% in 45-60 min;
the mobile phase A rises from 43-47% to 48-52% in 60-70 min;
keeping the mobile phase A at 48-52% for 70-75 min;
reducing the mobile phase A from 48-52% to 28-32% in 75-80 min;
and (4) keeping the mobile phase A for 28-32% in 80-90 min.
Preferably, the procedure of gradient elution in step S2) is as follows, wherein acetonitrile is used as mobile phase a and water is used as mobile phase B in percentage by volume:
the mobile phase A rises from 30% to 35% in 0-15 min;
the mobile phase A rises from 35% to 40% in 15-40 min;
the mobile phase A rises from 40% to 45% in 40-50 min;
the mobile phase A rises from 45% to 50% in 50-53 min;
keeping the mobile phase A for 50% in 53-70 min;
reducing the mobile phase A from 50% to 30% in 70-80 min;
the gradient elution procedure in the step S3) is as follows:
the mobile phase A rises from 28% to 35% in 0-20 min;
the mobile phase A rises from 35% to 40% in 20-45 min;
the mobile phase A rises from 40% to 45% in 45-60 min;
the mobile phase A rises from 45% to 50% in 60-70 min;
keeping the mobile phase A for 50% in 70-75 min;
reducing the mobile phase A from 50% to 30% in 75-80 min;
and (4) keeping the mobile phase A for 30% in 80-90 min.
Preferably, the flow rate of the mobile phase in the step S2) is 300-500 mL/min; the detection wavelength is 203 nm;
the flow rate of the mobile phase in the step S3) is 15-25 mL/min; the detection wavelength was 203 nm.
The invention also provides application of the saponin monomer compound shown in the formula (I) in preparing a medicament for treating and/or preventing ischemic cardiovascular and cerebrovascular diseases;
the invention also provides a pharmaceutical composition, which comprises one or more saponin monomer compounds shown in the formula (I);
the invention also provides a Xuesaitong medicine for injection, which comprises one or more saponin monomeric compounds shown in the formula (I);
the invention provides a saponin monomer compound which is shown as a formula (I). Compared with the prior art, the invention further separates and develops the panax notoginseng saponins to obtain a novel saponin monomer, and the effect of the saponin monomer on the aspect of cardiovascular is superior to that of the traditional panax notoginseng saponins drugs and monomers.
Drawings
FIG. 1 is a nuclear magnetic resonance hydrogen spectrum of a compound represented by the formula (I) obtained in example 1 of the present invention;
FIG. 2 is a nuclear magnetic resonance carbon spectrum of the compound represented by the formula (I) obtained in example 1 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a saponin monomer compound, which is shown as a formula (I):
the invention also provides a separation method of the saponin monomeric compound, which comprises the following steps: s1) dissolving Notoginseng radix total saponin for injection in water, adsorbing with nonpolar macroporous adsorbent resin, and eluting with ethanol to obtain Notoginseng radix glycol saponin; s2) dissolving the panaxadiol saponins in acetonitrile water solution for medium-high pressure preparative chromatographic separation, and performing gradient elution by using a C18 filler as a stationary phase and a mixed solvent of acetonitrile and water as a mobile phase to obtain a component Fr.A, a component Fr.B and a component Fr.C; the volume ratio of the acetonitrile to the water is (30-50): (70-50); s3) dissolving the component Fr.B in acetonitrile water solution for semi-preparative high pressure liquid chromatography separation, and performing gradient elution by using a C18 filler as a stationary phase and a mixed solvent of acetonitrile and water as a mobile phase to obtain the saponin monomer compound shown in the formula (I); the volume ratio of the acetonitrile to the water is (28-50): (72-50);
in the present invention, the sources of all raw materials are not particularly limited, and they may be commercially available.
Dissolving Notoginseng radix total saponin for injection in water, adsorbing with nonpolar macroporous adsorbent resin, and eluting with ethanol to obtain Notoginseng radix glycol saponin; the panax notoginseng saponins for injection only need to be the panax notoginseng saponins for injection, and the quality standard preferably accords with the standard of pharmacopoeia 2020; the proportion of the panax notoginseng saponins for injection to water is preferably 1: 5-1: 20(g/mL), more preferably 1: 5-1: 15(g/mL), more preferably 1: 5-1: 10(g/mL), most preferably 1: 6 (g/mL); the nonpolar macroporous adsorption resin is preferably D101 macroporous adsorption resin; the ethanol elution is preferably 70-80% ethanol elution, and more preferably 75% ethanol elution; in the invention, before ethanol elution, water and low-concentration ethanol are preferably sequentially used for elution; the low-concentration ethanol elution is preferably 25-35% ethanol elution, and more preferably 30% ethanol elution; in the invention, the preferable step is that after the nonpolar macroporous adsorption, the mixture is sequentially eluted by water, 25-35% ethanol and 70-80% ethanol, 70-80% ethanol eluent is collected and concentrated to obtain the panaxadiol saponins; more preferably, after nonpolar macroporous adsorption, eluting with water, 30% ethanol and 75% ethanol in sequence, collecting 75% ethanol eluate, and concentrating to obtain panaxadiol saponins; when the water, 25-35% ethanol and 70-80% ethanol are used for elution, the dosage of the eluent is preferably 4-8 BV, more preferably 5-7 BV and still more preferably 6BV respectively and independently.
Dissolving the panaxadiol saponins in acetonitrile water solution for medium-high pressure preparative chromatographic separation, and performing gradient elution by using a C18 filler as a stationary phase and using a mixed solvent of acetonitrile and water as a mobile phase to obtain a component Fr.A, a component Fr.B and a component Fr.C; the volume concentration of acetonitrile in the acetonitrile aqueous solution is preferably 5 to 15 percent, more preferably 8 to 12 percent, and still more preferably 10 percent; the mass volume ratio of the panaxadiol saponins to the acetonitrile water solution is preferably 1: 5-1: 10(g/mL), more preferably 1: 6-1: 9(g/mL), more preferably 1: 8-1: 9 (g/mL); the medium-high pressure preparative chromatography takes C18 filler as a stationary phase, preferably takes reversed phase C18 filler as a stationary phase, and more preferably takes UniSil reversed phase C18 filler as a stationary phase; the particle size of the C18 filler is preferably 10 μm; the medium-high pressure preparative chromatography uses a mixed solvent of acetonitrile and water as a mobile phase for gradient elution; the flow rate of the mobile phase is preferably 300-500 mL/min, more preferably 350-450 mL/min, and still more preferably 400 mL/min; the volume ratio of the acetonitrile to the water is (30-50): (70-50); in the present invention, acetonitrile is used as a mobile phase a, water is used as a mobile phase B, and the gradient elution degree is preferably specifically:
the mobile phase A rises from 28-32% to 33-37% in 0-15 min;
the mobile phase A rises from 33 to 37 percent to 38 to 42 percent in 15 to 40 min;
the mobile phase A is increased from 38 to 42 percent to 43 to 47 percent in 40 to 50 min;
the mobile phase A rises from 43-47% to 48-52% in 50-53 min;
keeping the mobile phase A for 48-52% in 53-70 min;
reducing the mobile phase A from 48-52% to 28-32% in 70-80 min;
more preferably specifically:
the mobile phase A rises from 30% to 35% in 0-15 min;
the mobile phase A rises from 35% to 40% in 15-40 min;
the mobile phase A rises from 40% to 45% in 40-50 min;
the mobile phase A rises from 45% to 50% in 50-53 min;
keeping the mobile phase A for 50% in 53-70 min;
and (4) reducing the mobile phase A from 50% to 30% in 70-80 min.
The detection wavelength of the medium-high pressure preparative chromatography is preferably 203 nm; and separating and collecting similar fractions by medium-high pressure preparative chromatography to obtain a component Fr.A, a component Fr.B and a component Fr.C.
Dissolving the component Fr.B in acetonitrile water solution for semi-preparative high pressure liquid chromatography separation, and performing gradient elution by using a C18 filler as a stationary phase and using a mixed solvent of acetonitrile and water as a mobile phase; the volume concentration of acetonitrile in the acetonitrile aqueous solution is preferably 15 to 25 percent, more preferably 18 to 22 percent, and still more preferably 20 percent; the mass-to-volume ratio of the component Fr.B to the acetonitrile aqueous solution is preferably 1: 5-1: 10(g/mL), more preferably 1: 6-1: 9(g/mL), more preferably 1: 7-1: 8 (g/mL); the semi-preparative high pressure liquid chromatography takes C18 filler as a stationary phase, preferably takes reversed phase C18 filler as a stationary phase, and more preferably takes UniSil reversed phase C18 filler as a stationary phase; the particle size of the C18 filler is preferably 10 μm; the size of the stationary phase is preferably 50X 250 mm; the semi-preparative high pressure liquid chromatography uses a mixed solvent of acetonitrile and water as a mobile phase for gradient elution; the flow rate of the mobile phase is preferably 15-25 mL/min, more preferably 18-22 mL/min, and still more preferably 20 mL/min; the volume ratio of the acetonitrile to the water is (28-50): (72-50); in the present invention, acetonitrile is used as a mobile phase a, water is used as a mobile phase B, and the gradient elution degree is preferably specifically:
the mobile phase A rises from 25 to 30 percent to 33 to 37 percent in 0 to 20 min;
after 20-45 min, the mobile phase A is increased from 33-37% to 38-42%;
the mobile phase A rises from 38-42% to 43-47% in 45-60 min;
after 60-70 min, the mobile phase A is increased from 43-47% to 48-52%;
keeping the mobile phase A at 48-52% for 70-75 min;
reducing the mobile phase A from 48-52% to 28-32% in 75-80 min;
keeping the mobile phase A for 28-32% in 80-90 min;
more preferably specifically:
the mobile phase A rises from 28% to 35% in 0-20 min;
the mobile phase A rises from 35% to 40% in 20-45 min;
the mobile phase A rises from 40% to 45% in 45-60 min;
the mobile phase A rises from 45% to 50% in 60-70 min;
keeping the mobile phase A for 50% in 70-75 min;
reducing the mobile phase A from 50% to 30% in 75-80 min;
and (4) keeping the mobile phase A for 30% in 80-90 min.
The detection wavelength of the semi-preparative high pressure liquid chromatography is preferably 203 nm; separating and collecting the fractions with single peak by semi-preparative high pressure liquid chromatography to obtain the saponin monomer compound shown in formula (I).
The invention further separates and develops the panax notoginseng saponins to obtain a novel saponin monomer, and the effect of the saponin monomer in the aspect of cardiovascular is superior to that of the existing panax notoginseng saponins drugs and monomers.
The invention also provides application of the saponin monomer compound shown in the formula (I) in preparing a medicament for treating and/or preventing ischemic cardiovascular and cerebrovascular diseases; the ischemic cardiovascular and cerebrovascular diseases preferably comprise one or more of ischemic cerebral apoplexy, cerebral infarction and cerebral hemiplegia.
The invention also provides a pharmaceutical composition, which comprises one or more saponin monomer compounds shown in the formula (I); preferably, the composition also comprises pharmaceutically acceptable auxiliary materials; the administration route of the pharmaceutical composition can be intestinal or parenteral, such as oral, intravenous, intramuscular, subcutaneous, nasal, oral mucosa, eye, lung and respiratory tract, skin, vagina, rectum, etc.; the dosage form of the pharmaceutical composition can be tablets, capsules, soft capsules, granules, pills, dripping pills, injection, freeze-dried powder injection, oral liquid, patches, paste, cataplasm or a sustained-release preparation, a controlled-release preparation injection, tablets, oral liquid, capsules, soft capsules, dripping pills, a sustained-release preparation or a controlled-release preparation.
The pharmaceutically acceptable excipients are those known to those skilled in the art, and are not particularly limited.
In order to prepare the pharmaceutical composition of the present invention into a capsule, the pharmaceutical composition of the present invention may be mixed with a diluent and a glidant, and the mixture may be directly placed into a hard capsule or a soft capsule. The pharmaceutical composition can also be prepared into granules or pellets with a diluent, an adhesive and a disintegrating agent, and then placed into hard capsules or soft capsules.
In order to prepare the pharmaceutical composition of the invention into injection, water, ethanol, isopropanol, propylene glycol, polyethylene glycol or a mixture thereof can be used as a solvent, and a proper amount of solubilizer, cosolvent, pH regulator and osmotic pressure regulator which are commonly used in the field can be added. The solubilizer or cosolvent can be ethanol, isopropanol, propylene glycol, polyethylene glycol, poloxamer, lecithin, hydroxypropyl-beta-cyclodextrin, etc.; the pH regulator can be citrate, phosphate, carbonate, acetate, hydrochloric acid, hydroxide, etc.; the osmotic pressure regulator can be sodium chloride, mannitol, glucose, phosphate, citrate, acetate, etc. For example, mannitol and glucose can be added as proppant for preparing lyophilized powder for injection. In addition, colorants, preservatives, flavors, flavorings, or other additives may also be added to the pharmaceutical preparation, if desired.
The invention also provides a Xuesaitong medicine for injection, which comprises one or more saponin monomeric compounds shown in the formula (I).
In order to further illustrate the present invention, the following will describe in detail a saponin monomer compound, its separation method and its application in preparing a medicine for treating thromboembolism provided by the present invention with reference to the examples.
The reagents used in the following examples are commercially available, and the examples were carried out at room temperature unless otherwise specified.
Apparatus and materials
Instrument for measuring the position of a moving object
| Instrument for measuring the position of a moving object | Model number | Manufacturer of the product |
| High-pressure semi-preparative chromatograph | NU3000C | JIANGSU HANBON SCIENCE & TECHNOLOGY Co.,Ltd. |
| Middle-high pressure preparation chromatograph | 150 type | JIANGSU HANBON SCIENCE & TECHNOLOGY Co.,Ltd. |
| Electronic balance | JM-B30001 | Ten Yuyao city Jiming weighing and checking equipment Limited |
| Rotary evaporator | R-3、R-215 | Swiss chachi |
Material
The panax notoginseng saponins (for injection) used by the product of the invention are produced by Kunzhi medicine group Limited company, and the quality standard accords with the standard of pharmacopoeia 2020. The D101 macroporous adsorbent resin for separation is a product of Cangzhou Baowen adsorption material science and technology Limited company; the reversed phase C18 chromatographic column is prepared from Suzhou nano-micro-technology product, Inc.; the water used for the reverse phase column chromatography is deionized water, and the acetonitrile is the preparation grade.
Example 1
1.1 extraction separation
Dissolving 500g of Notoginseng radix total saponin (for injection) in 3000ml of water, loading onto D101 macroporous adsorbent resin (2500 ml column), eluting with water, 30% ethanol, and 75% ethanol for 6BV column volume, collecting 75% ethanol eluate, and concentrating to dry to obtain 243g of Notoginseng radix glycol saponin.
Dissolving 243g of notoginseng diol saponin with 2000ml of 10% acetonitrile aqueous solution, and performing middle-high pressure preparative chromatography under the following chromatographic conditions: acetonitrile/water, volume ratio 30-50: 70-50 (solvent gradient elution procedure as shown in table below), flow rate: 400mL/min, and the detection wavelength is 203 nm; a chromatographic column: c18(10 μm) as filler, and packing the column for 3.5 Kg. Multiple loading elutes and fractions are collected to give fr.a (151g), fr.b (39g) and fr.c (22 g).
| Time (min) | Flow rate (ml/min) | A (acetonitrile)% | B (water)% |
| 0 | 400 | 30 | 70 |
| 15 | 400 | 35 | 65 |
| 40 | 400 | 40 | 60 |
| 50 | 400 | 45 | 55 |
| 53 | 400 | 50 | 50 |
| 70 | 400 | 50 | 50 |
| 80 | 400 | 30 | 70 |
Dissolving Fr.B in 300ml of 20% acetonitrile aqueous solution, and performing high-pressure semi-preparative chromatography under the following chromatographic conditions: acetonitrile/water, volume ratio 28-50: 72-50 (solvent gradient elution procedure as shown in table below), flow rate: 20mL/min, and the detection wavelength is 203 nm; preparing a chromatographic column: c18(10 μm), 50X 250 mm. The sample was applied and eluted several times, and the fractions were collected to obtain 166mg of the compound represented by the formula (I).
1.2 structural identification
The compound of formula (I) is a white powder, (+) -ESI-MS M/z 1108.60[ M + H [)]Determining the molecular formula as C54H92O23；
The compound represented by the formula (I) obtained in example 1 was analyzed by nuclear magnetic resonance, and the nuclear magnetic resonance hydrogen spectrum thereof was shown in fig. 1; the nuclear magnetic resonance carbon spectrum of the obtained product is shown in figure 2.
As can be seen from fig. 1 and 2:
1H-NMR(300MHz,DMSO),δ(ppm):5.60(s,2H),5.40(s,2H),5.20(s,1H),4 .88(s,4H),4.77(s,2H),4.71(s,4H),4.14(s,1H),3.94(s,4H),3.90(s,4H),3.70(s,2 H),3.60(s,10H),3.57-3.51(m,8H),3.44(s,1H),3.04(s,1H),1.94(s,2H),1.90-1.65( m,2H),1.82(s,3H),1.70(s,3H),1.70-1.45(m,2H),1.66-1.41(m,2H),1.62-1.38(m ,2H),1.56-1.32(m,4H),1.50-1.26(m,2H),1.41(s,1H),1.38(s,2H),1.20(s,3H),1.0 4(s,1H),0.94(s,2H),0.89(s,12H),0.84(s,3H)；
13C-NMR(300MHz,DMSO),δ(ppm):131.3,124.7,112.5,110.4,105.7,92.5,9 0.3,84.2,83.9,81.5,76.8,76.0,74.1,71.8,71.5,69.8,62.2,55.6,51.6,50.4,49.8,48.5,40.7 ,39.1,38.7,38.1,36.1,35.2,31.9,26.8,25.5,24.6,23.9,23.7,22.8,18.8,18.6,18.5,16.1；
1the compound is shown to have 8 methyl signals delta H0.84(3H, s),0.89(12H, s), 1.20(3H, s),1.70(3H, s) and 1.82(3H, s) in an H-NMR spectrum, and is suggested to be a triterpenoid; 1 double bond methine signal δ H5.20 (1H, s) and 4 sugar-terminated proton signals δ H5.60(2H, s), 5.40(2H, s). The 13C-NMR spectrum gave 54 carbon signals, including 8 methyl signals Δ C16.1 (C-29),18.5 (C-30),18.6(C-27),18.8(C-18),24.6(C-26),31.9 (C-28); 1 pair of double bond carbon signals delta H124.7 (C-24) and 131.3(C-25) and 4 glycosyl group terminal carbon signals delta C105.7 (C-1 '), 110.4 (C-1'), 92.5(C-1 '), 112.5 (C-1'), combined with 1H-and 13C-NMR data, compound 3 was presumed to be 1 triterpene saponin with 4 glucosyl groups attached. The NMR data of the compound is very similar to that of human saponin Rb1, the difference is that the position of the sugar connected at the 20 position is different, the position of the sugar connected at the 20 position of Rb1 is 1-6 position connection, and the position of the sugar connected at the 20 position of the compound shown in the formula (I) is 1-2 position connection, so that the compound is identified as the isopanasaponin Rb 1-III.
Example 2: effect on permanent focal cerebral ischemia in mice
2.1 materials of the experiment
2.1.1 samples
The test substance:
the content of the compounds shown in the formula (I) is more than 98 percent. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
Panax notoginsenosides, source: the panax notoginseng saponins (for injection) used by the product of the invention are produced by Kunzhi medicine group Limited company, and the quality standard accords with the standard of pharmacopoeia 2020. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
The content of Rb1 and Rg1 is more than 98 percent, and the source is as follows: are commercially available. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
Vehicle control:
sodium chloride injection, specification: 250 mL/bottle, Sichuan Koran pharmaceutical Co., Ltd, batch number: N21011602A.
2.1.2 animals
SPF grade ICR mice, male, 3-5 weeks old, weight 25-28 g, provided by Kunjin group, Inc. animal Room, production license: SCXK (Dian) 2019-: kunming City department of science and technology; the use license: SYCK (Dian) K2019-0001, Certification Unit: kunming City department of science and technology. Raising the animals in an IVC animal laboratory, wherein the temperature is 20-25 ℃ (the daily temperature difference is less than or equal to 3 ℃), the humidity is 40-70%, and the illumination is 12 h: 12h light and shade are alternated, the illumination is 150-300 lx, the noise is less than or equal to 60dB, and the experimental animal use license is as follows: SYXK (yun) 2009-0001, certification unit: kunming City department of science and technology; the method comprises the following steps of (1) group-culturing the mice in PVC transparent plastic boxes, wherein each box is less than or equal to 6 mice, feeding the mice with compound feed every day, freely drinking water, optionally replacing cages and padding materials, wherein the feed is sourced from Jiangsu province cooperative medical bioengineering (LLC) company, with a license number of: suzuo Fed (2014) 01008.
2.1.3 Main Instrument
AC211S electronic analytical balance, Sartorius; LT2000B model electronic balance, everlasting city day instruments ltd; DHG-9245A type electric heating constant temperature air blast drying oven, Shanghai-Hengscientific instruments Co., Ltd; biofuge refrigerated high speed centrifuge, Thermo; HHS-1 type constant temperature water bath tank, gold jar, and large-scale automated instrument factory; volumetric flask, scissors, curved forceps, hemostatic forceps and artery clamp, which are made in China; suppository, beijing west dense.
2.1.4 Primary reagents
Chloral hydrate, produced by national chemical group, batch number: 20081027, respectively; when in use, the sodium chloride injection is prepared into a concentration of 4%.
2.2 Experimental methods and results
Referring to the Koizum tethering method, 25-28 g of male ICR mice were selected, anesthetized with 4% chloral hydrate by intraperitoneal injection (400mg/kg. bw), then the right neck skin was incised, and the proximal common carotid artery and the external carotid artery were isolated and ligated. Placing an artery clamp at an Internal Carotid Artery (ICA), cutting an incision at a position 2-3 mm away from the proximal end of a common carotid artery bifurcation, inserting a wire bolt, enabling the wire bolt to enter the ICA and penetrate through the starting end of a Middle Cerebral Artery (MCA) to the proximal end of an anterior cerebral artery, and blocking all blood flow sources of the MCA. Ligature, prepare and suture skin, score 5 groups by layer after animals were fully conscious: model, compound shown in formula (I), cloisonne, Rg1 and Rb1, 10 animals in each group, 1 sham operation group and 6 animals in total. The sham operation group operates the same model animal except that the insertion tube is not used. After the model is made, animals in each group are subjected to intraperitoneal injection once a day, the volume of each group is 20mL/kg, and the model group and the sham operation group are injected with sodium chloride injection with the same volume. The survival time of the mice and the prolongation rate of the survival time compared with the model group mice were observed and calculated, and the results are shown in Table 1.
Survival time-death time-molding time.
Elongation rate ═ survival time of dosing group-survival time of model group/survival time of model group 100.
Table 1 shows that the survival time of the model mice is significantly shortened (p <0.01) compared to the sham group (survival time longer than 8 days, measured in 8 days), indicating successful modeling; compared with the model group, the administration group can obviously prolong the survival time of the mice with permanent cerebral ischemia (p <0.05 or p <0.01), and the prolonging rate of X to the survival time of the mice is the highest.
TABLE 1 Effect of series of samples on survival time of mice with focal permanent cerebral ischemia
Compared to the sham group:#P<0.05，##P<0.01; comparison with the model set:*P<0.05，**P<0.01。
example 3: effect on mouse focal ischemia reperfusion model
3.1 Experimental materials
3.1.1 samples
The test substance:
the content of the compound shown in the formula (I) is more than 98 percent. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
Panax notoginsenosides, source: the panax notoginseng saponins (for injection) used by the product of the invention are produced by Kunzhi medicine group Limited company, and the quality standard accords with the standard of pharmacopoeia 2020. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
The content of Rb1 and Rg1 is more than 98 percent, and the source is as follows: are commercially available. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
Vehicle control:
sodium chloride injection, specification: 250 mL/bottle, Sichuan Koran pharmaceutical Co., Ltd, batch number: N21011602A.
3.1.2 animals
SPF grade ICR mouse, male, weight 25 ~ 28g, by Kunzhi group member company animal room provide, production license: SCXK (Dian) 2019-: kunming City department of science and technology; the use license: SYCK (Dian) K2019-0001, Certification Unit: kunming City department of science and technology. Raising the animals in an IVC animal laboratory, wherein the temperature is 20-25 ℃ (the daily temperature difference is less than or equal to 3 ℃), the humidity is 40-70%, and the illumination is 12 h: 12h light and shade are alternated, the illumination is 150-300 lx, the noise is less than or equal to 60dB, and the experimental animal use license is as follows: SYXK (yun) 2009-0001, certification unit: kunming City department of science and technology; the method comprises the following steps of (1) group-culturing the mice in PVC transparent plastic boxes, wherein each box is less than or equal to 6 mice, feeding the mice with compound feed every day, freely drinking water, optionally replacing cages and padding materials, wherein the feed is sourced from Jiangsu province cooperative medical bioengineering (LLC) company, with a license number of: suzuo Fed (2014) 01008.
3.1.3 Main instruments
AC211S electronic analytical balance, Sartorius; LT2000B model electronic balance, genealogical city instruments ltd; DHG-9245A type electric heating constant temperature air blast drying oven, Shanghai-Hengscientific instruments Co., Ltd; biofuge refrigerated high speed centrifuge, Thermo; HHS-1 type constant temperature water bath tank, gold jar, and large-scale automated instrument factory; volumetric flask, scissors, curved forceps, hemostatic forceps and artery clamp, which are made in China; suppository, beijing west dense.
3.1.4 Primary reagents
Chloral hydrate, a product of national drug group chemical reagent limited, batch number: 20081027, respectively; when in use, the sodium chloride injection is prepared into a concentration of 4%.
Na2HPO4·12H2O, national drug group chemical reagents ltd, batch No.: 20121120, respectively; NaH2PO4·2H2O, tianjin feng ship chemicals ltd, lot No.: 20120202. phosphate buffer (PH 7.6): 12.463g of Na were weighed2HPO4·12H2O、0.8112g NaH2PO4·2H2And adding double distilled water to the solution to dissolve until the volume is 200mL, and refrigerating and storing.
Red tetrazolium (TTC), shanghai chemical agents corporation, china medicine group, lot number: 20120315. during the experiment, 1.20g of red tetrazole is weighed and added into 100mL of phosphate buffer solution to prepare 1.2% TTC, and the TTC is stored in the dark and is prepared for use.
Malondialdehyde (MDA) test kit, TBA assay, lot number: 20121208, respectively; superoxide dismutase (SOD) test kit, hydroxylamine assay, lot number: 20121208, respectively; all purchased from Nanjing, a built bioengineering Co.
3.2 Experimental methods and results
25-28 g of male ICR mice are randomly divided into 6 groups, namely a pseudo-surgery group, a model group, a compound shown as a formula (I), cloisonne, Rb1 and Rg1, wherein each group contains 10 mice, and the administration volume of each group is 20 mL/kg. Referring to the Koizum embolization method, after mice were anesthetized with 4% chloral hydrate by intraperitoneal injection (400mg/kg. bw), the right neck skin was incised, and the right common carotid artery, external carotid artery, and branch arteries thereof were isolated and ligated. The method comprises the steps of preparing a wire at the proximal end of an Internal Carotid Artery (ICA), placing an artery clamp at the distal end, cutting a bifurcation of a common carotid artery, inserting a wire plug, and leading the plug wire to enter the ICA and pass through the starting end of a Middle Cerebral Artery (MCA) to the proximal end of an anterior cerebral artery to block all blood flow sources of the MCA. The sham group only incised the right neck skin, separated the blood vessels, ligated the prepped line and sutured the skin. After 2 hours, the nylon thread was pulled out after each group of drugs were intravenously administered, the blood flow was allowed to be re-established, the skin was sutured, the rats were housed in cages and fed, and the model group and the sham group were injected with sodium chloride injection of the same volume. After 24h of reperfusion, the eyeballs are picked and blood is collected, centrifugation is carried out for 15 minutes at 3000rpm, serum is taken for freezing storage at the temperature of minus 20 ℃, and MDA and SOD are measured strictly according to the operation of a kit instruction; taking a brain, dividing the average coronal plane of the brain into 4 slices, placing the slices in a 1.2% TTC solution, incubating the slices in the dark at 37 ℃ for 15min for dyeing, wherein the infarcted area is not dyed, the normal brain tissue is dyed into red, weighing the whole brain weight and the infarcted part weight respectively, calculating the percentage of the infarcted area weight to the whole brain weight, and obtaining the result shown in table 2.
As can be seen from Table 2, the percent of cerebral infarction in 24h after the operation of the model group mice is very significantly different (p <0.01) compared with that in the sham operation group, which indicates that the modeling is successful; the administration group has obvious effect of reducing the cerebral infarction percentage of mice (p <0.05 or p <0.01), and the X group has better improving effect on the cerebral infarction percentage of the mice than the Chlorotal group, but has no obvious difference compared with the Chlorotal group (p > 0.05).
Compared with a sham operation group, the SOD activity in serum of the model group is obviously reduced, the MDA content is obviously increased, and the model group has very significant difference (p is less than 0.01), which indicates that the oxidation resistance of the model mouse in vivo is reduced; compared with the model group, except Rb1, the SOD activity in the serum of each administration group is obviously increased (p is less than 0.05), especially X is most obvious; except that X has obvious reduction on serum MDA (p is less than 0.05), the other administration groups only have a reduction trend on the content of MDA, which indicates that the antioxidant activity of X is superior to that of cloisonne.
3.3 statistical treatment
Using SPSS17.0 software, mean. + -. standard deviation for data measurements
The expression shows that t test is carried out on uniform variance, t' test is carried out on irregular variance, and nonparametric rank sum test is used for the skewness distribution. P<0.05 has statistical significance, P<0.01 has significant statistical significance.
TABLE 2 influence of series of samples on the percentage of cerebral infarction and partial biochemical index of mice with focal cerebral ischemia reperfusion injury
Compared to the sham group:#P<0.05，##P<0.01; comparison with the model set:*P<0.05，**P<0.01。
example 4: effect on mouse Whole brain ischemia model
4.1 Experimental materials
4.1.1 samples
The test substance:
the content of the compound shown in the formula (I) is more than 98 percent. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
Panax notoginsenosides, source: the panax notoginseng saponins (for injection) used by the product of the invention are produced by Kunzhi medicine group Limited company, and the quality standard accords with the standard of pharmacopoeia 2020. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
The content of Rb1 and Rg1 is more than 98 percent, and the source is as follows: are commercially available. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
Vehicle control:
sodium chloride injection, specification: 250 mL/bottle, Sichuan Koran pharmaceutical Co., Ltd, batch number: N21011602A.
4.1.2 animals
SPF grade ICR mouse, male, weight 25 ~ 28g, by Kunzhi group member company animal room provide, production license: SCXK (Yunnan) 2019-: kunming City department of science and technology; the use license: SYCK (Dian) K2019-0001, Certification Unit: kunming City department of science and technology. Raising the animals in an IVC animal laboratory, wherein the temperature is 20-25 ℃ (the daily temperature difference is less than or equal to 3 ℃), the humidity is 40-70%, and the illumination is 12 h: 12h light and shade are alternated, the illumination is 150-300 lx, the noise is less than or equal to 60dB, and the experimental animal use license is as follows: SYXK (yun) 2009-0001, certification unit: kunming City department of science and technology; the method comprises the following steps of (1) group-culturing the mice in PVC transparent plastic boxes, wherein each box is less than or equal to 6 mice, feeding the mice with compound feed every day, freely drinking water, optionally replacing cages and padding materials, wherein the feed is sourced from Jiangsu province cooperative medical bioengineering (LLC) company, with a license number of: suzuo Fed (2014) 01008.
4.1.3 Main Instrument
AC211S electronic analytical balance, Sartorius; LT2000B model electronic balance, genealogical city instruments ltd; DHG-9245A type electric heating constant temperature air blast drying oven, Shanghai-Hengscientific instruments Co., Ltd; biofuge refrigerated high speed centrifuge, Thermo; HHS-1 type constant temperature water bath tank, gold jar, and large-scale automated instrument factory; volumetric flask, scissors, curved forceps, hemostatic forceps and artery clamp, which are made in China.
4.1.4 Primary reagents
Chloral hydrate, a product of national drug group chemical reagent limited, batch number: 20081027, respectively; when in use, the sodium chloride injection is prepared into a concentration of 4%.
4.2 Experimental methods and results
Selecting 25-28 g of male mice, and randomly dividing the mice into 6 groups according to body weight: a sham operation group, a model group, a compound shown as a formula (I), cloisonne, Rb1 and Rg1, wherein each group comprises 10 animals, and each group of animals is subjected to intragastric administration for 1 time and 7 consecutive days according to the dose every day; sodium chloride injection is given to the sham operation group and the model group, and the volume is 20 mL/kg. 30min after the last administration, the mice were anesthetized by intraperitoneal injection with 400mg/kg chloral hydrate, fixed in the supine position, and subjected to median incision of the neck, bilateral common carotid arteries were separated, and the surgical line was passed down, while the blood flow of the bilateral common carotid arteries was blocked. After the model is made, the wound is closed, the mice are placed back into the cage for breeding, the survival time is observed within 2 hours, and the result is shown in table 3 when the survival time is 2 hours after 2 hours.
The results show that compared with a sham operation group (survival time is longer than 2h in each case and counted by 2 h), the survival time of the mice in the model group is obviously shortened (p is less than 0.01), and the success of modeling is suggested; compared with the model group, the administration group can obviously prolong the survival time of the mice with global cerebral ischemia (p is less than 0.05 or less than 0.01), and the prolonging rate of X to the survival time of the mice is the highest.
TABLE 3 Effect of series of samples on survival time of mice with global cerebral ischemia
Compared with the group of the sham operation,▲/▲▲p is less than 0.05/0.01; compared with model group*/**P＜0.05/0.01。
Example 5: influence on the breathing time of the mouse in the mouth after the broken head
5.1 Experimental materials
5.1.1 samples
The test substance:
the content of the compounds shown in the formula (I) is more than 98 percent. In the experiment, sodium chloride injection is used for preparing solution with corresponding concentration for animals to inject.
Panax notoginsenosides, source: the panax notoginseng saponins (for injection) used by the product of the invention are produced by Kunzhi medicine group Limited company, and the quality standard accords with the standard of pharmacopoeia 2020. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
The content of Rb1 and Rg1 is more than 98 percent, and the source is as follows: are commercially available. In the experiment, the sodium chloride injection is prepared into solution with corresponding concentration for animal injection.
Vehicle control:
sodium chloride injection, specification: 250 mL/bottle, Sichuan Koran pharmaceutical Co., Ltd, batch number: N21011602A.
5.1.2 animals
SPF grade ICR mice, male, 3-5 weeks old, weight 25-28 g, provided by Kunjin group, Inc. animal Room, production license: SCXK (Dian) 2019-: kunming City department of science and technology; the use license: SYCK (Dian) K2019-0001, Certification Unit: kunming City department of science and technology. Raising the animals in an IVC animal laboratory, wherein the temperature is 20-25 ℃ (the daily temperature difference is less than or equal to 3 ℃), the humidity is 40-70%, and the illumination is 12 h: 12h light and shade are alternated, the illumination is 150-300 lx, the noise is less than or equal to 60dB, and the experimental animal use license is as follows: SYXK (yun) 2009-0001, certification unit: kunming City department of science and technology; the method comprises the following steps of (1) group-culturing the mice in PVC transparent plastic boxes, wherein each box is less than or equal to 6 mice, feeding the mice with compound feed every day, freely drinking water, optionally replacing cages and padding materials, wherein the feed is sourced from Jiangsu province cooperative medical bioengineering (LLC) company, with a license number of: threo-feed (2014) 01008.
5.1.3 Main Instrument
AC211S electronic analytical balance, Sartorius; LT2000B model electronic balance, genealogical city instruments ltd; DHG-9245A type electric heating constant temperature air blast drying oven, Shanghai-Hengscientific instruments Co., Ltd; HHS-1 type constant temperature water bath tank, gold jar, and large-scale automated instrument factory; volumetric flask, scissors, curved tweezers, hemostatic forceps.
5.1.4 Primary reagents
Chloral hydrate, a product of national drug group chemical reagent limited, batch number: 20081027, respectively; when in use, the sodium chloride injection is prepared into a concentration of 4%.
5.2 Experimental methods and results
Selecting 25-28 g of male mice, and randomly dividing the mice into 5 groups according to body weight: a blank group, a compound shown as a formula (I), cloisonne, Rb1 and Rg1, wherein each group comprises 10 animals, and each group of animals is subjected to intragastric administration for 1 time and 7 consecutive days according to the dose every day; the blank was given sodium chloride injection in a volume of 20 mL/kg. 30min after the last administration, the mice are decapitated one by one, the time from decapitation to gasp stopping of the mouth is immediately recorded according to a stopwatch and is used as an anoxia resistance index, and the protective effect of the medicament on cerebral anoxia is observed. According to the length of gasping time after the mouse breaks, a blank control group is used as a reference, whether the drug can prolong the mouth-opening breathing time after the mouse breaks is judged, the antagonistic action and the strength of the antagonistic action on complete ischemia/hypoxia are shown, and the obtained results are shown in table 4.
The results show that the administration groups except the Rg1 group can prolong the time of mouth opening of the decapitated mice (p <0.05 or p <0.01) compared with the blank group, wherein X can prolong the time of mouth opening of the mice (p <0.01) very significantly.
TABLE 4 Effect of series of samples on post-decapitated breath time of mice
In comparison to the blank set, the data is,*/**P＜0.05/0.01。
Claims (8)
1. a saponin monomer compound is characterized by being represented by the formula (I):
2. a method for isolating a monomeric saponin compound according to claim 1, comprising:
s1) dissolving Notoginseng radix total saponin for injection in water, adsorbing with nonpolar macroporous adsorbent resin, eluting with water, 25-35% ethanol, and 70-80% ethanol in sequence, collecting 70-80% ethanol eluate, and concentrating to obtain Notoginseng radix glycol saponin;
s2) dissolving the panaxadiol saponins in acetonitrile water solution for medium-high pressure preparative chromatographic separation, and performing gradient elution by using a C18 filler as a stationary phase and a mixed solvent of acetonitrile and water as a mobile phase to obtain a component Fr.A, a component Fr.B and a component Fr.C; the volume ratio of the acetonitrile to the water is (30-50): (70-50);
s3) dissolving the component Fr.B in acetonitrile water solution for semi-preparative high pressure liquid chromatography separation, and performing gradient elution by using a C18 filler as a stationary phase and a mixed solvent of acetonitrile and water as a mobile phase to obtain the saponin monomer compound shown in the formula (I); the volume ratio of the acetonitrile to the water is (28-50): (72-50);
the volume concentration of acetonitrile in the acetonitrile water solution in the step S2) is 5-15%;
the volume concentration of acetonitrile in the acetonitrile water solution in the step S3) is 15-25%;
taking acetonitrile as a mobile phase A and water as a mobile phase B, and the gradient elution procedure in the step S2) comprises the following steps:
the mobile phase A rises from 28-32% to 33-37% in 0-15 min;
the mobile phase A rises from 33 to 37 percent to 38 to 42 percent in 15 to 40 min;
the mobile phase A is increased from 38 to 42 percent to 43 to 47 percent in 40 to 50 min;
50-53 min, the mobile phase A is increased from 43-47% to 48-52%;
keeping the mobile phase A for 48-52% in 53-70 min;
reducing the mobile phase A from 48-52% to 28-32% in 70-80 min;
the gradient elution procedure in step S3) is:
the mobile phase A rises from 25 to 30 percent to 33 to 37 percent in 0 to 20 min;
the mobile phase A rises from 33 to 37 percent to 38 to 42 percent in 20 to 45 min;
the mobile phase A rises from 38-42% to 43-47% in 45-60 min;
the mobile phase A rises from 43-47% to 48-52% in 60-70 min;
keeping the mobile phase A at 48-52% for 70-75 min;
reducing the mobile phase A from 48-52% to 28-32% in 75-80 min;
and (4) keeping the mobile phase A for 28-32% in 80-90 min.
3. The separation method according to claim 2, wherein the nonpolar macroporous adsorption resin in the step S1) is a D101 macroporous adsorption resin.
4. The separation method according to claim 2, wherein acetonitrile is used as a mobile phase A, water is used as a mobile phase B, and the gradient elution in the step S2) comprises the following procedures:
the mobile phase A is increased from 30% to 35% in 0-15 min;
the mobile phase A rises from 35% to 40% in 15-40 min;
the mobile phase A rises from 40% to 45% in 40-50 min;
the mobile phase A rises from 45% to 50% in 50-53 min;
keeping the mobile phase A for 50% in 53-70 min;
reducing the mobile phase A from 50% to 30% in 70-80 min;
the gradient elution procedure in the step S3) is as follows:
the mobile phase A rises from 28% to 35% in 0-20 min;
the mobile phase A rises from 35% to 40% in 20-45 min;
the mobile phase A rises from 40% to 45% in 45-60 min;
the mobile phase A rises from 45% to 50% in 60-70 min;
keeping the mobile phase A for 50% in 70-75 min;
reducing the mobile phase A from 50% to 30% in 75-80 min;
and (5) keeping the mobile phase A for 30% for 80-90 min.
5. The separation method according to claim 2, wherein the flow rate of the mobile phase in the step S2) is 300-500 mL/min; the detection wavelength is 203 nm;
the flow rate of the mobile phase in the step S3) is 15-25 mL/min; the detection wavelength was 203 nm.
6. An application of saponin monomer compound shown in formula (I) in preparing medicine for treating and/or preventing ischemic cardiovascular and cerebrovascular diseases;
7. a pharmaceutical composition is characterized by comprising a saponin monomer compound shown as a formula (I);
8. the injection Xuesaitong medicine is characterized by comprising a saponin monomer compound shown as a formula (I);
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| CN111187331A (en) * | 2020-01-20 | 2020-05-22 | 天津中医药大学 | Saponin compound or pharmaceutically acceptable salt and composition thereof, and preparation method and application thereof |
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