CN108690041A - The preparation method of Yi Zhong fraxinellones, dictamine and obakunone - Google Patents

The preparation method of Yi Zhong fraxinellones, dictamine and obakunone Download PDF

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CN108690041A
CN108690041A CN201810446083.5A CN201810446083A CN108690041A CN 108690041 A CN108690041 A CN 108690041A CN 201810446083 A CN201810446083 A CN 201810446083A CN 108690041 A CN108690041 A CN 108690041A
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ethyl acetate
solution
medicinal extract
preparation
petroleum ether
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董维珍
常建红
寇俊闯
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Chengdu rifenstedan Biotechnology Co.,Ltd.
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CHENGDU HERBPURIFY CO LTD
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D493/00Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
    • C07D493/02Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
    • C07D493/10Spiro-condensed systems
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    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/87Benzo [c] furans; Hydrogenated benzo [c] furans
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    • C07DHETEROCYCLIC COMPOUNDS
    • C07D491/00Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/02Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
    • C07D491/04Ortho-condensed systems
    • C07D491/044Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring
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Abstract

The invention discloses the preparation methods of Yi Zhong fraxinellones, dictamine and obakunone, include the following steps:1) root bark of shaggy-fruited dittany or salicis,cortex medicinal material are provided, is extracted with the alcoholic solution of 50%-90%, is merged extracting solution A, concentrate B is concentrated under reduced pressure to obtain;2) concentrate B is extracted with ethyl acetate, and medicinal extract C is concentrated under reduced pressure to obtain;3) medicinal extract C is taken to carry out thin layer chromatography separation, with petroleum ether-ethyl acetate system gradient elution, in petroleum ether-ethyl acetate volume ratio from 50:1 to 30:During 1, solution D is collected, in petroleum ether-ethyl acetate volume ratio from 30:1 to 15:During 1, solution E is collected, in petroleum ether-ethyl acetate volume ratio from 15:1 to 2:During 1, solution F is collected;4) solution is concentrated into medicinal extract, recrystallization and dry Hou Huo get fraxinellones, dictamine and obakunone sterling respectively.The method yield is up to 90%, and purity is more than 99%, is suitble to industrialized production.

Description

The preparation method of Yi Zhong fraxinellones, dictamine and obakunone
Technical field
The present invention relates to crude drug fields, the specially preparation method of Yi Zhong fraxinellones, dictamine and obakunone.
Background technology
The traditional Chinese medicine root bark of shaggy-fruited dittany is the dry root skin of rutaceae shaggy-fruited dittany (Dictamnusdasycarpus Turcz), With wind-dispelling, eliminating dampness, heat-clearing, removing toxic substances and other effects.It is anti-oxidant, antiviral, anti-thin that modern pharmacology research shows that the root bark of shaggy-fruited dittany has The various actives such as bacterium, anti-inflammatory, antitumor.Recent studies indicate that isolated fraxinellones, dictamine, Huang from the root bark of shaggy-fruited dittany Cypress ketone is the main pharmacodynamics composition of the root bark of shaggy-fruited dittany, has a variety of stronger bioactivity.But it in the prior art, is extracted from the root bark of shaggy-fruited dittany The yield of fraxinellone, dictamine and obakunone is unable to meet production requirement, can not accomplish fully to extract to these three ingredients, can not Meets the needs of productivity effect.
Invention content
The present invention provides the preparation method of Yi Zhong fraxinellones, dictamine and obakunone, and the preparation method can obtain simultaneously Three kinds of fraxinellone, dictamine and obakunone products can more adequately extract the active ingredient in medicinal material, and high income, purity are high, At low cost, process control is suitble to industrialized production.
To solve the above problems, the present invention provides the preparation method of Yi Zhong fraxinellones, dictamine and obakunone, feature exists In including the following steps:
1) root bark of shaggy-fruited dittany or salicis,cortex medicinal material are provided, is extracted with the alcoholic solution of 50%-90%, merges extracting solution A, be concentrated under reduced pressure Obtain concentrate B;
2) concentrate B is extracted with ethyl acetate, combined ethyl acetate layer, and medicinal extract C is concentrated under reduced pressure to obtain;
3) medicinal extract C is taken, upper silicagel column carries out thin layer chromatography separation, with petroleum ether-ethyl acetate system gradient elution, in stone Oily ether-ethyl acetate volume ratio is from 50:1 to 30:During 1, solution D is collected, in petroleum ether-ethyl acetate volume ratio from 30:1 arrives 15:During 1, solution E is collected, in petroleum ether-ethyl acetate volume ratio from 15:1 to 2:During 1, solution F is collected;
4) solution D is concentrated into medicinal extract H, the dry Hou Huo get fraxinellone sterlings of medicinal extract H recrystallizations;Solution E is concentrated into medicinal extract I, leaching Dictamine sterling is obtained after cream I recrystallizations are dry;Solution F is concentrated into medicinal extract J, and it is pure to obtain obakunone after medicinal extract J recrystallizations are dry Product.
Preferably, the alcoholic solution that alcoholic solution is 70%-80% in the step 1).
Preferably, alcoholic solution is ethyl alcohol or methanol solution in the step 1).
Preferably, extracting method is refluxing extraction, seepage pressure effects, one kind in ultrasonic extraction or more in the step 1) Kind.
Preferably, extracting method is refluxing extraction or seepage pressure effects in the step 1).
Preferably, volume weight (L/kg) ratio of the solvent and medicinal material of refluxing extraction is (2~5) in the step 1):1.
Preferably, the Extracting temperature of refluxing extraction is 50 DEG C -70 DEG C in the step 1), is extracted as 1-2h, extraction time It is 4-6 times.
Preferably, the volume ratio of concentrate B and ethyl acetate is 1 in the step 2):1.
More preferably, recrystallization solvent is ethyl acetate or ethyl acetate-light petrol mixed solvent in the step 4) One or both of.
Shaggy-fruited dittany Dictamnus dasycarpus Turcz are Rutaceae shaggy-fruited dittany category herbaceos perennial, first recorded in"God Agriculture book on Chinese herbal medicine passes through", there is the effect of heat-clearing and damp-drying drug, wind-dispelling is detoxified, be chiefly used in treating damp and hot sore, yellow water leaching glass, eczema, rubella, The illnesss such as pruitus, mange, yellow subcutaneous ulcer, acute, chronic hepatitis, and the root bark of shaggy-fruited dittany is its dry root skin.The platymiscium whole world has 5 kinds, It is distributed mainly on Europe and Asia, wherein there are two types of China, respectively shaggy-fruited dittany and Dictamnus angustifolius Dictamnus Angustifolius G.Don, the former is distributed in Heilungkiang, Jilin, Liaoning, the Inner Mongol, Hebei, Shaanxi, Gansu, Shandong, river The ground such as Soviet Union, Jiangxi, Anhui, Hubei;The latter also known as Xinjiang shaggy-fruited dittany, are only distributed in Xinjiang, are not used for medicinal purpose temporarily.
White willow Salix alba L., Salicaceae sallow deciduous tree, tree is 20 meters high, and 70 centimetres of the diameter of a cross-section of a tree trunk 1.3 meters above the ground, tree crown is opened Wealthy, growth is rapid, and light, cold-resistant, high temperature resistant, happiness water is wet, adaptable, and salicis,cortex is its dry bark.White willow distribution is wide, newly There are cultivation in boundary, the provinces and regions such as Gansu, Qinghai, Tibet, are Plain fast-growing materials and the chief species turned the four sides green.White willow leaf, bud or Root can be used as medicine, and have the effect of clearing heat and detoxicating, dispelling wind and eliminating dampness.It is usually used in acute tonsillitis, sphagitis, the gland cheek is scorching, bilious Hepatitis, pelvic infecton, ephritis, boil, rheumatic arthritis, rheumatoid arthritis.
Isolated fraxinellones, dictamine, obakunone are its main pharmacodynamics composition from the root bark of shaggy-fruited dittany or salicis,cortex, are had more The stronger bioactivity of kind.Fraxinellone has good protecting liver, lowering enzymes and inhibits liver as a kind of novel hepatosis treating medicine in it Fibrosis isoreactivity, and there is antibacterial, desinsection isoreactivity;Dictamine has cardiac stimulant, relaxation blood vessel, anti-skin light damage, anti-blood The effects that platelet is assembled, antimycotic and insect antifeedant;Obakunone has reduction blood glucose, anticancer isoreactivity.
In the present invention, medicinal raw material is obtained first, by heating and refluxing extraction, normal temperature percolation extraction and ultrasonic extraction Mode, obtain extraction solution, extraction solution through extraction concentrate after obtain crude product, after by column chromatography chromatogram, by petroleum ether-second Acetoacetic ester mixed solvent gradient elution is collected the eluent of different sections, and then is purified to preceding product by recrystallization, After vacuum drying get Dao fraxinellone, dictamine, obakunone sterling, it is reachable using technical solutions according to the invention , fraxinellone yields 90.3%, yield 0.18%, purity 99.44%, dictamine yield is up to 82%, yield 0.05%, purity 99.91%, Cortex Phellodendri Ketone yield is up to 78.2%, and yield 0.31%, purity 99.98%, yield, yield, purity are all higher, at low cost, easy to operate, Process control is suitble to industrialized production.
Specific implementation mode
It is right With reference to embodiment in order to make those skilled in the art more fully understand the technical solution of invention The present invention is described in further detail.
Fraxinellone is limonin substances, is off-white powder, is soluble in ethyl acetate, methanol is not soluble in water, dissolves in Petroleum ether.Dictamine is alkaloids substance, is prismatic crystals, is dissolved in hot ethanol and chloroform, is slightly soluble in ether, be insoluble in water. Obakunone is limonin triterpenoid, is off-white powder, not soluble in water, is soluble in chloroform, acetone, glacial acetic acid, indissoluble In ether, it is slightly dissolved in ethyl alcohol.
The present invention provides the preparation method of Yi Zhong fraxinellones, dictamine and obakunone, includes the following steps:
1) root bark of shaggy-fruited dittany or salicis,cortex medicinal material are provided, extracted with the alcoholic solution of 50%-90%, preferably the alcohol of 70%-80% Solution, more preferably ethyl alcohol or methanol solution merge extracting solution A, concentrate B are concentrated under reduced pressure to obtain.Extracting method is that reflux carries It takes, is in seepage pressure effects, ultrasonic extraction one or more.Preferably refluxing extraction or seepage pressure effects.The solvent of refluxing extraction with The volume weight (L/kg) of medicinal material is than being (2~5):1, the Extracting temperature of refluxing extraction is 50 DEG C -70 DEG C, is extracted as 1-2h, carries It is 4-6 times to take number.
2) concentrate B is extracted with ethyl acetate, combined ethyl acetate layer, and medicinal extract C is concentrated under reduced pressure to obtain;Concentrate B and acetic acid The volume ratio of ethyl ester is 1:1.
3) medicinal extract C is taken, upper silicagel column carries out thin layer chromatography separation, with petroleum ether-ethyl acetate system gradient elution, in stone Oily ether-ethyl acetate volume ratio is from 50:1 to 30:During 1, solution D is collected, in petroleum ether-ethyl acetate volume ratio from 30:1 arrives 15:During 1, solution E is collected, in petroleum ether-ethyl acetate volume ratio from 15:1 to 2:During 1, solution F is collected.
4) solution D is concentrated into medicinal extract H, the dry Hou Huo get fraxinellone sterlings of medicinal extract H recrystallizations;Solution E is concentrated into medicinal extract I, leaching Dictamine sterling is obtained after cream I recrystallizations are dry;Solution F is concentrated into medicinal extract J, and it is pure to obtain obakunone after medicinal extract J recrystallizations are dry Product.Recrystallization solvent is one or both of ethyl acetate or ethyl acetate-light petrol mixed solvent.
Wherein, the TLC testing conditions of silica gel column chromatography are toluene-cyclohexane-ethyl acetate:3:3:3,5% sulfuric acid 105 degree of colour developings of vanillic aldehyde.
HPLC (high performance liquid chromatography) Quality Control testing conditions are AgilentC18 (250nm × 4.6nm, 5 μm), and mobile phase is Methanol-water (60: 40);Flow velocity 0.8ml/min;25 DEG C of column temperature;Detection wavelength 236nm.
In the present invention, yield=(monomer mass in monomer quantities received/raw material) * 100%, yield=(product quantities received/ Material quantity) * 100%.
Using technical solutions according to the invention , fraxinellones yield up to 90.3%, yield 0.18%, purity 99.44%, in vain Fresh alkali yield is up to 82%, yield 0.05%, purity 99.91%, and obakunone yield is up to 78.2%, yield 0.31%, purity 99.98%, yield, yield, purity are all higher, at low cost, easy to operate, process control, are suitble to industrialized production.
Above-mentioned elaborating for the present invention is the embodiment of the present invention below.
Embodiment one
1, it extracts
Root bark of shaggy-fruited dittany medicinal material or salicis,cortex medicinal material are taken, is crushed, it is organic molten with methanol, ethyl alcohol, ethyl acetate, dichloromethane etc. Agent extracts, and extracting mode is refluxing extraction, and the liquid ratio that feeds intake is 3:1, Extracting temperature is 60 DEG C, every time extraction 1.5 hours, Extraction 5 times, merges all extracting solution A, in 50-70 DEG C of reduced pressure, is concentrated into no alcohol, collects concentrate B, spare.
2, extraction pretreatment
The extraction concentrate B that previous step is collected, by volume 1:1 addition ethyl acetate is extracted, and is extracted 3-5 times, is received Collection ethyl acetate layer simultaneously merges, and in 50-70 DEG C of reduced pressure, is concentrated into medicinal extract C, spare.
3, it isolates and purifies:
Isolation and purification method:Silica gel lives thin layer chromatography
Purified feed stock:The spare medicinal extract C of previous step is dissolved with proper amount of methanol, and silica gel (60-80 mesh) is then added and mixes sample, at The particle of the dispersion of yellow, as column raw material excessively
Cross cylinder system:Petroleum ether-ethyl acetate gradient elution, a concentration of petroleum ether:Ethyl acetate is from 50:1-30:1-15: 1-2:1, the product solution of different elution sections is collected, petroleum ether is collected:Ethyl acetate=50:1-30:1 solution D , Wei fraxinellones production Product section collects petroleum ether:Ethyl acetate=30:1-15:1 solution E is dictamine product section, collects petroleum ether:Ethyl acetate =15:1-2:1 solution F, is obakunone product section, and elution process passes through TLC tracking and monitorings.
4, it crystallizes, is dry
Solution D, E, F are concentrated into medicinal extract respectively, obtain medicinal extract H, I, J, recrystallize primary, Huo get Ash respectively with ethyl acetate Ketone, dictamine, obakunone.
Grouping is divided into 4 groups in step 1 by Extraction solvent difference, 1 group be methanol, 2 groups be 75% ethyl alcohol, 3 groups be acetic acid second Ester, 4 groups are dichloromethane, detect Mei Zu fraxinellones, dictamine, the yield of obakunone, yield and purity by HPLC methods, as a result Such as table 1.
Table 1, the grouping experiment result of embodiment one
The above results, which can be seen that solvent methanol and ethyl alcohol, can meet production requirement.
Embodiment two
1, it extracts
Take root bark of shaggy-fruited dittany medicinal material or salicis,cortex medicinal material, crush, with a concentration of 50% ethyl alcohol, 60% ethyl alcohol, 75% ethyl alcohol, 80% ethyl alcohol, 90% ethyl alcohol extract, and extracting mode is refluxing extraction, and the liquid ratio that feeds intake is 3:1,70 DEG C of Extracting temperature carries Time 1h is taken, extracts 4 times times, merges all extracting solution A, in 50-70 DEG C of reduced pressure, no alcohol is concentrated into, collects concentrate B, it is spare.
2, extraction pretreatment
The extraction concentrate B that previous step is collected, by volume 1:1 addition ethyl acetate is extracted, and is extracted 3-5 times, is received Collection ethyl acetate layer simultaneously merges, and in 50-70 DEG C of reduced pressure, is concentrated into medicinal extract C, spare.
3, it isolates and purifies:
Isolation and purification method:Silica gel lives thin layer chromatography
Purified feed stock:The spare medicinal extract C of previous step is dissolved with proper amount of methanol, and silica gel (60-80 mesh) is then added and mixes sample, at The particle of the dispersion of yellow, as column raw material excessively
Cross cylinder system:Petroleum ether-ethyl acetate gradient elution, a concentration of petroleum ether:Ethyl acetate is from 50:1-30:1-15: 1-2:1, the product solution of different elution sections is collected, petroleum ether is collected:Ethyl acetate=50:1-30:1 solution D , Wei fraxinellones production Product section collects petroleum ether:Ethyl acetate=30:1-15:1 solution E is dictamine product section, collects petroleum ether:Ethyl acetate =15:1-2:1 solution F, is obakunone product section, and elution process passes through TLC tracking and monitorings.
4, it crystallizes, is dry
Solution D, E, F are concentrated into medicinal extract respectively, obtain medicinal extract H, I, J, are distinguished with the mixed solvent of petroleum ether-ethyl acetate Recrystallization is primary, Huo get fraxinellones, dictamine, obakunone.
Grouping is divided into 5 groups in step 1 by concentration of alcohol difference, 1 group be 50% ethyl alcohol, 2 groups be 60% ethyl alcohol, 3 groups be 75% ethyl alcohol, 4 groups be 80% ethyl alcohol, 5 groups be 90% ethyl alcohol, pass through the receipts that HPLC methods detect Mei Zu fraxinellones, dictamine, obakunone Rate, yield and purity, as a result such as table 2.
Table 2, the grouping experiment result of embodiment two
The above results can be seen that 50%-90% ethyl alcohol, disclosure satisfy that production requirement, wherein 60%-80% ethyl alcohol is excellent It is most preferably scheme to select scheme, 75% ethyl alcohol.
Embodiment three
1, it extracts
Root bark of shaggy-fruited dittany medicinal material or salicis,cortex medicinal material are taken, crushes, is extracted with a concentration of 75% ethyl alcohol, extracting mode includes The liquid ratio that feeds intake of Soakage extraction, refluxing extraction, ultrasonic extraction and seepage pressure effects, wherein refluxing extraction is 3:1, heating temperature is It 50 DEG C, extraction time 2h, extracts 4 times.Merge all extracting solution A, in 50-70 DEG C of reduced pressure, is concentrated into no alcohol, collects dense Contracting liquid B, it is spare.
2, extraction pretreatment
The extraction concentrate B that previous step is collected, by volume 1:1 addition ethyl acetate is extracted, and is extracted 3-5 times, is received Collection ethyl acetate layer simultaneously merges, and in 50-70 DEG C of reduced pressure, is concentrated into medicinal extract C, spare.
3, it isolates and purifies:
Isolation and purification method:Silica gel lives thin layer chromatography
Purified feed stock:The spare medicinal extract C of previous step is dissolved with proper amount of methanol, and silica gel (60-80 mesh) is then added and mixes sample, at The particle of the dispersion of yellow, as column raw material excessively
Cross cylinder system:Petroleum ether-ethyl acetate gradient elution, a concentration of petroleum ether:Ethyl acetate is from 50:1-30:1-15: 1-2:1, the product solution of different elution sections is collected, petroleum ether is collected:Ethyl acetate=50:1-30:1 solution D , Wei fraxinellones production Product section collects petroleum ether:Ethyl acetate=30:1-15:1 solution E is dictamine product section, collects petroleum ether:Ethyl acetate =15:1-2:1 solution F, is obakunone product section, and elution process passes through TLC tracking and monitorings.
4, it crystallizes, is dry
Solution D, E, F are concentrated into medicinal extract respectively, obtain medicinal extract H, I, J, recrystallize primary, Huo get Ash respectively with ethyl acetate Ketone, dictamine, obakunone.
Grouping is divided into 4 groups in step 1 by extracting mode difference, 1 group be Soakage extraction, 2 groups be ultrasonic extraction, 3 groups be back Stream extraction, 4 groups be seepage pressure effects, Mei Zu fraxinellones, dictamine, the yield of obakunone, yield and purity are detected by HPLC methods, As a result such as table 3.
Table 3, the grouping experiment result of embodiment three
It is above-mentioned the experimental results showed that, ultrasonic extraction, refluxing extraction, seepage pressure effects disclosure satisfy that production requirement, in conjunction with production Cost consideration, preferably refluxing extraction and seepage pressure effects.
Example IV
1, it extracts
Root bark of shaggy-fruited dittany medicinal material or salicis,cortex medicinal material are taken, crushes, is extracted with a concentration of 75% ethyl alcohol, extracting mode includes back Stream extraction, 60 DEG C of Extracting temperature extract 5 times, every time extraction 1.5 hours, and rate of charge is medicinal material:Organic solvent (L/kg)=(1~ 6):1, after extraction thoroughly, merge all extracting solution A, in 50-70 DEG C of reduced pressure, be concentrated into no alcohol, collects concentrate B, it is standby With.
2, extraction pretreatment
The extraction concentrate B that previous step is collected, by volume 1:1 addition ethyl acetate is extracted, and is extracted 3-5 times, is received Collection ethyl acetate layer simultaneously merges, and in 50-70 DEG C of reduced pressure, is concentrated into medicinal extract C, spare.
3, it isolates and purifies:
Isolation and purification method:Silica gel lives thin layer chromatography
Purified feed stock:The spare medicinal extract C of previous step is dissolved with proper amount of methanol, and silica gel (60-80 mesh) is then added and mixes sample, at The particle of the dispersion of yellow, as column raw material excessively
Cross cylinder system:Petroleum ether-ethyl acetate gradient elution, a concentration of petroleum ether:Ethyl acetate is from 50:1-30:1-15: 1-2:1, the product solution of different elution sections is collected, petroleum ether is collected:Ethyl acetate=50:1-30:1 solution D , Wei fraxinellones production Product section collects petroleum ether:Ethyl acetate=30:1-15:1 solution E is dictamine product section, collects petroleum ether:Ethyl acetate =15:1-2:1 solution F, is obakunone product section, and elution process passes through TLC tracking and monitorings.
4, it crystallizes, is dry
Solution D, E, F are concentrated into medicinal extract respectively, obtain medicinal extract H, I, J, are distinguished with the mixed solvent of petroleum ether-ethyl acetate Recrystallization is primary, Huo get fraxinellones, dictamine, obakunone.
It is grouped, is divided into 6 groups by the liquid ratio that feeds intake (L/kg) difference in step 1,1 group of liquid ratio is 1:1,2 group of liquid ratio is 2:1,3 group of liquid ratio is 3:Isosorbide-5-Nitrae group liquid ratio is 4:1,5 group is 5:1,6 group is 6:1, by HPLC methods detection Mei Zu fraxinellones, in vain Fresh alkali, the yield of obakunone, yield and purity, as a result such as table 4.
Table 4, the grouping experiment result of example IV
It is above-mentioned the experimental results showed that, when the liquid ratio to feed intake be (2~5):When 1, meet production requirement.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair The limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the art For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change Protection scope of the present invention is also should be regarded as into retouching.

Claims (9)

1. the preparation method of Yi Zhong fraxinellones, dictamine and obakunone, which is characterized in that include the following steps:
1) root bark of shaggy-fruited dittany or salicis,cortex medicinal material are provided, is extracted with the alcoholic solution of 50%-90%, is merged extracting solution A, be concentrated under reduced pressure dense Contracting liquid B;
2) concentrate B is extracted with ethyl acetate, combined ethyl acetate layer, and medicinal extract C is concentrated under reduced pressure to obtain;
3) medicinal extract C is taken, upper silicagel column carries out thin layer chromatography separation, with petroleum ether-ethyl acetate system gradient elution, in oil Ether-ethyl acetate volume ratio is from 50:1 to 30:During 1, solution D is collected, in petroleum ether-ethyl acetate volume ratio from 30:1 arrives 15:During 1, solution E is collected, in petroleum ether-ethyl acetate volume ratio from 15:1 to 2:During 1, solution F is collected;
4) solution D is concentrated into medicinal extract H, the dry Hou Huo get fraxinellone sterlings of medicinal extract H recrystallizations;Solution E is concentrated into medicinal extract I, medicinal extract I weights Dictamine sterling is obtained after crystallizing and drying;Solution F is concentrated into medicinal extract J, and obakunone sterling is obtained after medicinal extract J recrystallizations are dry.
2. preparation method according to claim 1, which is characterized in that alcoholic solution is 70%-80%'s in the step 1) Alcoholic solution.
3. preparation method according to claim 2, which is characterized in that alcoholic solution is that ethyl alcohol or methanol are molten in the step 1) Liquid.
4. preparation method according to claim 3, which is characterized in that in the step 1) extracting method be refluxing extraction, It is one or more in seepage pressure effects, ultrasonic extraction.
5. preparation method according to claim 4, which is characterized in that in the step 1) extracting method be refluxing extraction or Seepage pressure effects.
6. preparation method according to claim 5, which is characterized in that the solvent and medicinal material of refluxing extraction in the step 1) Volume weight (L/kg) than be (2~5):1.
7. preparation method according to claim 6, which is characterized in that the Extracting temperature of refluxing extraction is in the step 1) 50 DEG C -70 DEG C, it is extracted as 1-2h, extraction time is 4-6 times.
8. preparation method according to claim 1, which is characterized in that concentrate B and ethyl acetate in the step 2) Volume ratio is 1:1.
9. preparation method according to claim 1, which is characterized in that recrystallization solvent is ethyl acetate in the step 4) Or one or both of ethyl acetate-light petrol mixed solvent.
CN201810446083.5A 2018-05-11 2018-05-11 The preparation method of Yi Zhong fraxinellones, dictamine and obakunone Pending CN108690041A (en)

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CN109824638A (en) * 2019-04-01 2019-05-31 山东笑康生物科技有限公司 A method of the Ti Qu Ash skin ketone from cortex dictamni
CN111671747A (en) * 2020-05-15 2020-09-18 广东华夏友美生物科技有限公司 Antibacterial composition and application thereof in preparation of staphylococcus epidermidis quorum sensing inhibitor
CN114133401A (en) * 2021-12-30 2022-03-04 吉林化工学院 Preparation method of dictamnine monomer
CN114259519A (en) * 2021-12-24 2022-04-01 吉林化工学院 Processing technology for optimizing cortex dictamni decoction pieces by combining hierarchical analysis with response surface method
CN114133401B (en) * 2021-12-30 2024-05-31 吉林化工学院 Preparation method of dictamnine monomer

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