KR20170086166A - Pharmaceutical Composition for Prevention or Treatment of Stroke - Google Patents

Pharmaceutical Composition for Prevention or Treatment of Stroke Download PDF

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KR20170086166A
KR20170086166A KR1020160005478A KR20160005478A KR20170086166A KR 20170086166 A KR20170086166 A KR 20170086166A KR 1020160005478 A KR1020160005478 A KR 1020160005478A KR 20160005478 A KR20160005478 A KR 20160005478A KR 20170086166 A KR20170086166 A KR 20170086166A
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pharmaceutical composition
stroke
compound
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KR101940372B1 (en
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박소영
이진우
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단국대학교 천안캠퍼스 산학협력단
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    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/56Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
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    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/41Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61K31/00Medicinal preparations containing organic active ingredients
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    • A61K31/57Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane or progesterone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/60Salicylic acid; Derivatives thereof
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    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/48Preparations in capsules, e.g. of gelatin, of chocolate
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    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2300/00Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00

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Abstract

The present invention relates to a pharmaceutical composition for prevention and treatment of stroke and a method for producing the same. The pharmaceutical composition for the prevention and treatment of stroke according to the present invention has a remarkable effect on prevention and treatment of stroke. In particular, the pharmaceutical composition for the prevention and treatment of stroke according to the present invention has the advantage of remarkably reducing the disadvantages of herbal medicine extracts including hepatotoxicity. The present invention also provides the first use for the prevention and treatment of strokes of single substances identified and isolated in wheat.

Description

≪ Desc / Clms Page number 1 > Pharmaceutical Composition for Prevention or Treatment of Stroke &

The present invention relates to a pharmaceutical composition for prevention and treatment of stroke and a method for producing the same.

Stroke is the second most important cause of death among Koreans. Stroke can be divided into ischemic stroke and hemorrhagic stroke. Hemorrhagic stroke is mainly caused by traffic accidents. Most strokes are ischemic strokes, and the interruption of blood supply to a portion of the brain is the cause of ischemic stroke.

If transient cerebral ischemia is induced in the cerebrum, ATP depression and edema occur in the neuron, resulting in extensive damage of the brain due to neuronal death. Neuronal death occurs after a considerable period of time following cerebral ischemia, which is called delayed neuronal death. In the transient forebrain ischemic model using the Mongolian gerbil, the neuronal cell death was observed in the CA1 region of the hippocampus 4 days after induction of cerebral ischemia (Kirino T., Sano K. Acta Neuropathol., 62: 201-208, 1984; Kirino T. Brain Res., 239: 57-69, 1982). That is, an ischemic stroke begins and within minutes the cells are damaged.

There are two known mechanisms of neuronal death due to cerebral ischemia. One is the accumulation of excess glutamate outside the cell by cerebral ischemia. This glutamate enters the cell and eventually causes excessive accumulation of intracellular calcium, resulting in neuronal death (Kang TC, et al. J. Neurocytol., 30: 945-955, 2001) and the other is the oxidative neuronal cell cycle that is caused by damage to DNA and cytoplasm due to an increase of in vivo radicals due to abrupt oxygen supply during ischemia-reperfusion Flowers F, Zimmerman JJ, New Horiz., New York, New York, NY, 1984; 6: 169-180,1998).

Recently, based on these studies, many researches have been conducted to search for a substance that effectively inhibits neuronal cell death in cerebral ischemia or to clarify the mechanism of substance. However, to date there are few substances that effectively inhibit neuronal cell death caused by cerebral ischemia.

Drugs that have been used in stroke so far include mainly thrombolytic agents and anti-blood coagulants (plasminogen activator or adenylyl cyclase activator), which are not direct drugs of cell protection due to stroke, Most of my therapies are.

In addition, a clinical test was conducted in the case of MK-801, a calcium channel blocker for effectively inhibiting early influx of calcium, but the drug was discarded due to its side effects.

On the other hand, the domestic patent discloses a pharmaceutical composition derived from a herbal medicine, but it has not been disclosed how many of the components present in the herbal extract exert a direct and pharmacologically beneficial effect on the stroke.

Specifically, Korean Patent Laid-Open Publication No. 2006-0019222 entitled " Composition for the Prevention and Treatment of Degenerative Brain Disease Containing an Extract of Wheat Starch with Neuronal Cell Protection Activity " The present invention relates to a pharmaceutical composition for preventing and treating degenerative brain diseases containing a whey crude extract having cell protection activity as an active ingredient and containing a pharmaceutically acceptable carrier, diluent or excipient.

However, the above invention is only a rough measurement of the efficacy of the extract of wheat, and there is no suggestion or comment as to which ingredient has its effective activity.

Korean Patent No. 1423875 discloses a composition for preventing or treating cerebral stroke or degenerative brain diseases containing a complex extract. The term " Sceptridium ternatum, Buddleja officinalis, And a pharmaceutical composition for the prevention or treatment of stroke or degenerative brain diseases comprising a composite extract of scutellaria baicalensis as an active ingredient ".

However, the above-mentioned invention has a necessity to include a mixed extract of various herbal medicines including wheat-thymus, so that it is not known whether wheat remedy improves degenerative brain disease by the sole action of wheat monohydrate, There is no suggestion or comment as to whether it has such pharmacological activity.

As described above, in the conventional invention, identification of the active ingredient of wheat starch has not been made. Therefore, not only the possibility of development as a new drug in the future was very low, but also it was difficult to apply the precise mechanism for industrial application. In addition, the herbal medicine extract has a problem that the toxicity thereof is significantly higher than that of a single component compound due to the limitations of its inherent limit that many pharmacological components are contained in large amounts.

Therefore, among the thousands to tens of thousands of ingredients contained in wheat, it is necessary to identify what ingredients are effective for stroke.

Accordingly, the inventors of the present invention have recognized that it is necessary to industrially utilize the efficacy of wheat-growing in order to identify a single active ingredient by extracting, identifying and evaluating a component effective for cerebral stroke from wheat- .

Korean Patent Publication No. 10-2006-0019222 Korean Patent No. 1423875

It is intended to provide a pharmaceutical composition for the prevention and treatment of stroke comprising a compound represented by the following formula (1) or a salt thereof as an active ingredient.

[Chemical Formula 1]

Figure pat00001

It is another object of the present invention to provide a method for preparing a pharmaceutical composition for the prevention and treatment of stroke, which comprises extracting, isolating and formulating an active ingredient in wheat milk.

In order to accomplish the object of the present invention, the present invention provides a pharmaceutical composition for preventing and treating stroke, comprising a compound represented by the following formula (1) or a salt thereof as an active ingredient.

[Chemical Formula 1]

Figure pat00002

The present invention also provides a method for preparing a pharmaceutical composition for the prevention and treatment of stroke, which comprises extracting, isolating and formulating an active ingredient in wheat milk.

The pharmaceutical composition for the prevention and treatment of stroke according to the present invention has a remarkable effect on prevention and treatment of stroke. In particular, the pharmaceutical composition according to the present invention has an advantage of remarkably reducing the disadvantages of herbal medicine extracts including hepatotoxicity.

The present invention also provides the first use for the prevention and treatment of strokes of single substances identified and isolated in wheat.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing an example of the process for obtaining an extract and a fraction for obtaining the compound of the present invention. Fig.
2 is a view showing an example of a purification process for obtaining the compound of the present invention.
Fig. 3 shows another example of the purification process for obtaining the compound of the present invention.
FIG. 4 shows 1 H-NMR of Compound 1 identified as a single substance.
5 shows 13 C-NMR of Compound 1 identified as a single substance.
FIG. 6 shows 1 H-NMR of Compound 2 identified as a single substance. FIG.
7 shows 13 C-NMR of Compound 2 identified as a single substance.
8 is a diagram showing 1 H-NMR of Compound 3 of the present invention.
9 is a diagram showing 13 C-NMR of Compound 3 of the present invention.
10 is a diagram showing a structural formula of Compound 3 of the present invention.
FIG. 11 is a chart showing the cytotoxicity of the methanol extract obtained in the purification (extraction) of the compound 3 of the present invention. FIG.
12 is a graph showing the inhibitory activity of PHD activity of the methanol extract obtained in the purification (extraction) of Compound 3 of the present invention.
FIG. 13 is a chart for confirming the cytotoxicity of fractions obtained according to the respective solvents obtained in the purification (fractionation) of the compound 3 according to the present invention.
FIG. 14 is a graph showing the ability of the fractions obtained in the purification (fractionation) step of Compound 3 according to the present invention to inhibit PHD activity.
15 is a chart for confirming the cytotoxicity of the silica gel chromatography fraction obtained in the purification process of Compound 3 according to the present invention.
16 is a graph showing the ability of the silica gel chromatography fraction obtained in the purification process of Compound 3 according to the present invention to inhibit PHD activity.
Fig. 17 is a chart for confirming the cytotoxicity of the compounds 1 to 3. Fig.
18 is a graph showing the ability of Compound 3 to inhibit PHD activity.
19 shows the effect of Compound 3 on PHD2 expression.
20 shows the effect of Compound 3 on HIF-1 expression level.

Hereinafter, the present invention will be described in more detail.

The present invention relates to a pharmaceutical composition for the prevention and treatment of stroke comprising a compound represented by the following formula (1) or a salt thereof as an active ingredient.

≪ Formula 1 >

Figure pat00003

The term " pharmaceutical composition " of the present invention means an article used for diagnosis, treatment, alleviation, treatment or prevention of a disease of a human or an animal, and any composition necessary for maintaining, improving or improving the health of an animal or a human. do.

The compound of the above formula 1 is used in the same sense as the " compound 3 "

Stroke is the second most important cause of death among Koreans. Stroke can be divided into ischemic stroke and hemorrhagic stroke.

&Quot; Stroke " as used in the present invention means ischemic or hemorrhagic stroke, and all lesions caused by the ischemic state of the brain are included in the scope of the present invention.

In ischemic conditions, the cells produce many responses to overcome this. The most important factor is the HIF protein. HIF-1 can be divided into α and β forms, among which HIF-1α is sensitive to oxygen and is degraded by PHD2. However, in the ischemic state, PHD can not digest HIF-1α, binds to HIF-1β to form HIF-1 complex, and expresses the target protein. The target proteins of HIF-1 are VEGF, EPO, HO-1 and Glut-1, which play a role in regulating damaged cells by participating in angiogenesis, iron metabolism, vasomotor regulation and glucose metabolism.

Therefore, finding a substance that activates HIF or increases the expression level, or acts to inhibit PHD or decrease the expression level is very important for the treatment and prevention of stroke, especially ischemic stroke.

It was confirmed that Compound 3 of the present invention not only inhibits the activity of PHD but also increases the expression level of HIF in response to suppression of its expression level even in the absence of toxicity (see FIGS. 17 to 20).

This means that Compound 3 of the present invention can be used as a causative agent for controlling the direct cause of stroke, unlike the vasodilator or blood coagulation inhibitor that has been used as a conventional therapy for ischemic stroke.

The salt of Compound 3 contained in the pharmaceutical composition according to the present invention may be a physiologically acceptable salt with an inorganic acid, an organic acid, an inorganic base or an organic base.

Examples of the inorganic acid include hydrochloric acid, bromic acid, sulfuric acid and phosphoric acid. The organic acids include citric acid, acetic acid, lactic acid, tartaric acid, maleic acid, fumaric acid, formic acid, propionic acid, oxalic acid, trifluoroacetic acid, benzoic acid, gluconic acid, , Glycolic acid, succinic acid, 4-toluenesulfonic acid, galacturonic acid, embonic acid, glutamic acid or aspartic acid, but are not limited thereto.

The compound 3 of the present invention can be chemically synthesized or obtained by extraction from natural products. Compound 3 of the present invention has a steroid nucleotide structure and can be easily synthesized from chemists in the art, but there is no information about the use of the compound for stroke.

The inventors of the present invention conducted a screening for substances that reduce PHD through luciferase assay using 400 herbal medicine libraries in order to find a substance that inhibits PHD, and selected the whey assimilation among them.

Therefore, when extracting 3 of the present invention from a natural product, it is preferable to separate it from the wheat dream ( Buddleja officinalis ).

Wheatgrass buds are traditional herbs in Korea and China, and flavonoids, triterpenoids, saponins, and phenylethanoids have been isolated in previous studies (Tai, BH , Nhiem, NX, Quang, TH, Ngan, NTT, Tung, NH, Kim, Y., Lee, JJ, Myung, CS, Cuong, NM, & Kim, YH A new iridoid and effect on the rat aortic vasular smooth musle Cell proliferation of isolated compounds from Buddleja officinalis. Bioorg. Med. Chem. Lett., 2011, 21, 3462-3466, etc.). However, none of these compounds has been clearly identified as effective for stroke.

The present invention provides a method for the preparation of a pharmaceutical composition for the prevention and treatment of stroke, which comprises extracting, isolating and formulating Compound 3 from wheat.

When the compound 3 contained in the pharmaceutical composition according to the present invention is obtained by an extraction method, the extraction method may be a cold extraction extraction method, an onion extraction extraction method, a heat extraction method, an ultrasonic extraction method, or the like. .

The separation of the compound 3 contained in the pharmaceutical composition according to the present invention can be achieved by extracting with at least one solvent selected from the group consisting of methanol, ethanol, propanol and isopropanol. Of these, methanol or ethanol is preferable.

The solvent used for the extraction is preferably 50 to 100% (v / v), more preferably 50% (v / v) to 99% (v / v) diluted water.

The extract obtained by extracting the wheat seed with one or more solvents selected from the group consisting of methanol, ethanol, propanol and isopropanol is subjected to extraction after removing the whey residue, filtering with a filter paper, and then filtrating the filtrate using a vacuum rotary concentrator or a vacuum dryer It can be concentrated and stored at room temperature.

The extract may be simultaneously or sequentially fractionated using at least one solvent selected from the group consisting of hexane, methylene chloride, ethyl acetate, butanol and water.

The solvent used for the fraction is preferably diluted water of 50% (v / v) to 100% (v / v), more preferably 50% (v / v) to 99% (v / v).

The fractions may be concentrated using a vacuum rotary evaporator or a vacuum drier and stored at room temperature.

The fractions obtained by simultaneous or sequential fractionation using one or more solvents selected from the group consisting of hexane, methylene chloride, ethyl acetate, butanol and water can be purified by silica gel chromatography or MPLC, Which can be additionally separated.

The solvent used in the above-mentioned chromatography method is not limited, but preferably at least one solvent selected from the group consisting of methanol, hexane, acetone, ethyl acetate, acetonitrile and methylene chloride is exemplified.

Compound 3, which is separated by the above chromatography method or synthesized by a chemical synthetic method, can be formulated to be administered to a patient including an inert carrier, a diluent, or both.

Examples of the inert carrier or diluent include lactose, dextrose, sucrose, sorbitol, mannitol, xylitol, erythritol, maltitol, starch, corn starch, acacia rubber, alginate, gelatin, calcium phosphate, calcium silicate, Cellulose, microcrystalline cellulose, polyvinylpyrrolidone, citric acid, tartaric acid, water, methylhydroxybenzoate, propylhydroxybenzoate, talc, magnesium stearate and mineral oil, dextrin, calcium carbonate, propylene glycol, liquid paraffin, And the like, but the present invention is not limited thereto.

The pharmaceutical composition according to the present invention can be formulated into an oral or parenteral preparation including the above-exemplified carrier, additives including a diluent.

Formulations for oral administration include tablets, capsules, pills, powders, granules, suspending agents, and syrups. The form for parenteral administration may be in the form of a cream, a lotion, an ointment, a liquid, a gel, a cataplasma, a patch, an aerosol, a fluid extract, an elixir, an infusion, a sachet,

In addition, the pharmaceutical composition according to the present invention can be used as a conventional pharmaceutical composition, in addition to conventional fillers, extenders, binders, disintegrants, anticoagulants, lubricants, wetting agents, pH adjusters, nutrients, vitamins, electrolytes, alginic acid and its salts, Colloids, glycerin, fragrances, emulsifiers or preservatives, and the like. Other suitable lubricants and additional excipients that may be used are described in the following references. [Handbook of Pharmaceutical Excipients, 7th Edition, American Pharmaceutical Association; The Theory and Practice of Industrial Pharmacy, 3rd Edition, Lachman, Leon, 1976; Pharmaceutical Dosage Forms: Tablets Volume 1 ~ 3 Edition, Lieberman, Hebert A., et al., 1989; Modern Pharmaceutics, Banker, Gilbert and Rhodes, Christopher T, 1979; And Remington ' s Pharmaceutical Sciences, 15th Edition, 1975)

The pharmaceutical composition for the prevention and treatment of stroke comprising Compound 3 according to the present invention can be applied to animals including humans.

The dose to be administered may be determined in consideration of the subject, method of administration, age, sex, severity of the subject, condition of the subject, absorption of the active ingredient in the body, inactivity, (Body weight) to 500 mg / kg (body weight), preferably 0.1 mg / kg (body weight), in the case of animals other than humans, Kg body weight) to 400 mg / kg body weight or more preferably 1 mg / kg body weight to 300 mg / kg body weight.

The administration can be carried out once or several times, but is not limited thereto.

The content of Compound 3 in the pharmaceutical composition for the prevention and treatment of stroke according to the present invention may be 0.001% by weight to 99.9% by weight, 0.1% by weight to 99% by weight, or 1% by weight to 50% And the content of the compound may be suitably adjusted depending on the intended use of the composition and the method of use.

The pharmaceutical composition for the prevention and treatment of stroke according to the present invention may additionally contain substances known in the art as well as the above-mentioned compound 3, which have a significant therapeutic effect of a known stroke improvement.

Examples include blood coagulation inhibitors including coumarin derivatives, heparin derivatives and vitamin K antagonists; A cyclooxygenase inhibitor including aspirin and the like, a phosphodiesterase inhibitor including cilostazol and the like, an anti-serotonin agent including adenylate cyclase and clopidogrel, including sapoglylate, Prostaglandin derivatives including prostates, etc., anti -platelet agents including GPIIb-IIIa antagonists including tyrosine and the like ; Thrombolytic agents including europine kinase and the like; Thrombin inhibitors including darbigatran and the like; Apixaban, ginkgo extract, napamostat, ribaquivan, ticlopidine, ticagrella, and the like. More preferably, the compound of the formula (I) is selected from the group consisting of aspirin, cilostazol, clopidogrel, sapoglylate, veraprost, tyropivan, europine, dabigatran, apixaban, ginkgo x, napamostat, ribaroxan, ticlopidine, , But is not limited thereto.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Example  One. Wheat  Preparation of Extracts and Fraction Extracts

One. Wheat  Preparation of methanol or ethanol extracts

To 4 kg of the wheat remnants with impurities removed, 90% methanol was added, and the mixture was immersed at room temperature for 24 hours. After filtration through a filter paper, the filtrate was concentrated using a vacuum rotary evaporator (EYELA). This process was repeated three times and the concentrate was stored at 4 [deg.] C until use to give a total of 432 g of methanol extract (see Figure 1).

Alternatively, 90% ethanol was added to 1 kg of the wheat wheat with impurities removed, and 98 g of the extract was obtained through the same process as above.

2. Wheat  Preparation of fraction extract

The concentrated whey methanol or ethanol extract was fractionated with two solvents that did not mix using polarity differences. The mixture was successively fractionated with hexane, methylene chloride, ethyl acetate, n-butanol and water layers and concentrated. This procedure was repeated three times. The concentrate was stored at 4 ° C until use. The extract had 72.5 g of hexane layer, 52 g of methylene chloride layer, 120 g of ethyl acetate layer, 80 g of n-butanol layer and 100 g of water layer, respectively (see Fig. 1).

Example  2. Separation of Compound 1 to 3

The above fractionated hexane layer extract (72.5 g) was applied primarily to silica gel open column chromatography. The mobile phases were 100% acetone in 100% hexane and a total of 8 fractions were obtained (BOH 1-8). Based on the results of luciferase assay and MTT assay, additional silica gel column chromatography of BOH4 and BOH5 was carried out (see FIGS. 2 and 3).

In the case of BOH 4, the mobile phase was hexane and ethyl acetate, using 7% ethyl acetate in 60% ethyl acetate and finally 100% ethyl acetate. Seven fractions (BOH 4-1 to 4-7) were obtained. The residue was purified by silica gel column chromatography using BOH 4-7. The mobile phase was eluted with hexane and ethyl acetate in 100% ethyl acetate in 10% ethyl acetate and four fractions (BOH 4-7-1 to 4-7- 4). Among them, RP-18 gel column chromatography using BOH 4-7-3 was used, and mobile phase was 80% methanol. Four fractions (BOH 4-7-3-1 ~ 4-7-3-4) were obtained, and RP-18 chromatography using 70% methanol as mobile phase using BOH 4-7-3-2 To give Compound 1 (6.8 mg) and Compound 2 (2.5 mg) (see Fig. 2).

In the case of BOH 5, six fractions (BOH 5-1 to 5-6) were obtained by carrying out silica gel chromatography using hexane and ethyl acetate as the mobile phase and 90% ethyl acetate in 20% ethyl acetate. Among them, silica gel chromatography was carried out using BOH 5-3, and 5 fractions (BOH 5-3-1 to 5-3-5) were obtained in 100% hexane using 50% ethyl acetate as a mobile phase. Using BOH 5-3-3, 60% methanol was used as mobile phase by RP-18 gel chromatography to obtain Compound 3 (24.7 mg) (see FIG. 3).

Example  3. Identification of Structure of Compound 3

According to the natural product extraction method according to the present invention, three kinds of compounds (Compounds 1 to 3) were isolated, but Compounds 1 and 2 were cytotoxic or deteriorated in their ability to inhibit PHD activity. Thus, all of the compounds 1 to 3 were measured for NMR (see FIGS. 4 to 9), but only the compound 3 was analyzed for its structure to identify the compound (see FIGS.

Compounds 1 to 3 were all measured using Avance III 700 MHz, Bruker (Germany) by a person skilled in the art. As a result, Compound 3 was identified as a compound of Formula I below.

[Chemical Formula 1]

Figure pat00004

Experimental Example  One. Cytotoxicity of methanol extracts

MTT-based cytotoxicity assay was performed to evaluate the toxicity of the methanol extract of Example 1 to cells. Hypoxia was induced by treatment with CoCl 2 for 2 hours after PHD-CHO (PHD overexpressed CHO cell) cells were cultured for 8 hours in a 96-well plate. Cells were cultured for 18 hours and then treated with 5 mg / ml MTT solution was added and cultured for 3 hours. After removing the medium and dissolving in DMSO for 30 minutes, the absorbance was measured at 540 nm using an Emax precision microplate reader (Molecular Devices, CA, USA). As a result, it was confirmed that even at a concentration of 100 ug / ml of 90% methanol extract, there was no cytotoxicity (see FIG. 11).

Experimental Example  2. Methanol extract PHD  activation Inhibition  Confirm

The PHD luciferase assay was performed to evaluate the ability of the methanol extract extracted in Example 1-1 to inhibit PHD activity. PHD-CHO cells cultured on a 96-well plate for 8 hours were treated with the drug, followed by CoCl 2 treatment for 2 hours, followed by incubation for 18 hours, followed by Luciferase Assay. After removing the medium, cells were lysed with lysis buffer, and 100 μl of reaction buffer was added to each well. Then, the cells were transferred to a luminometer plate and measured using a Centro XS3 LB 960 Microplate Luminometer.

As a result, PHD activity was inhibited in a concentration-dependent manner, and PHD activity was inhibited to a level corresponding to that of the control group (no treatment other than DMSO) at a concentration of 100 ug / ml in the experimental group (see FIG. 12).

Experimental Example  3. Toxicity of fraction extracts

MTT-based cytotoxicity assay was performed to evaluate the cytotoxicity of the fraction extract of Example 1-2. Experimental example 1 was repeated except that the concentration of the test group was set to 20 ug / ml, 50 ug / ml and 100 ug / ml, respectively.

As a result, it was confirmed that there was no cytotoxicity at 20 ug / ml of hexane, methylene chloride, ethyl acetate and total concentration of butanol (see FIG. 13).

Experimental Example  4. Of the fraction extract PHD  activation Inhibition  Confirm

The PHD luciferase assay was performed to evaluate the ability of the fraction extract of Example 1-2 to inhibit PHD activity. Based on the cytotoxicity results of Experimental Example 3, it was evaluated only in the range of non-toxicity. As a result, the best effect was confirmed at 20 ug / ml of hexane (see FIG. 14).

Experimental Example  5. Silica gel open Column chromatography Fraction  Cytotoxicity and PHD  activation Inhibition  evaluation

The cytotoxicity and inhibition of PHD activity of the eight fractions (BOH 1-8) obtained from the silica gel open column chromatography of the hexane layer were evaluated. Experiments on cytotoxicity and inhibition of PHD activity were carried out in the same manner as Experimental Examples 1 and 2 except for the application concentration in the experimental group. Eight fractions proceeded at a concentration of 20 ug / ml. BOH 2, 4, 5 and 7 showed no cytotoxicity, and a non-toxic fraction was used to confirm the inhibition of PHD activity. As a result, BOH 2, 4 and 5 showed inhibition of PHD activity, and BOH 4 and 5 showed the best effect (see FIGS. 15 and 16).

Experimental Example  6. Cytotoxicity Evaluation of Compounds 1 to 3

The cytotoxicity of the isolated single compounds 1 to 3 was evaluated. Experimental methods for cytotoxicity were carried out in the same manner as in Experimental Example 1 except for the application concentration of the test group. Compounds 1 and 2 showed slight toxicity at 7.5 ug / ml and toxicity at the remaining concentrations. On the other hand, it was confirmed that Compound 3 was not toxic even at 30 ug / ml (see FIG. 17).

Experimental Example  7. Compound 3 PHD  Evaluation of inhibitory activity

Compound 3, which was confirmed to be non-toxic in Experimental Example 6, was used to evaluate the ability to inhibit PHD activity. Experimental method was the same as Experimental Example 2 except for the application concentration of the experimental group. As a result, it was found that the PHD was inhibited in a concentration-dependent manner, and the best inhibitory effect of PHD activity was confirmed at a concentration of 30 ug / ml (see FIG. 18).

Experimental Example  8. Compound 3 PHD  And HIF -1 alpha expression level

Western blot analysis of HIF-1α and HIF-1α, an important protein for the protection of neurons in ischemic conditions, was performed. Compound 3 was treated with 30 μg / ml of the PHD-CHO cells cultured in a 6-well dish for 8 hours, treated with CoCl 2 for 2 hours, then cultured for 18 hours, discarded and laemmli sample buffer To collect proteins. It was boiled in boiling water at 100 ℃ for 10 minutes and stored at -20 ℃ until use. Proteins were separated by electrophoresis with 7.5% gel acrylamide gel and transferred to PVDF membrane. In order to prevent nonspecific binding of the PVDF membrane to the antibody, the cells were incubated in blocking buffer (5% skin milk in PBS) for 1 hour, washed with PBS solution (0.1% PBST) The primary antibody to the test protein was added and reacted at 4 ° C for 12 hours. HIF-1α rabbit antibody (Santa Cruz Biotechnology, Texas, USA) and Tubulin antibody (Santa Cruz Biotechnology, Texas, USA) were used for the primary antibody. And then reacted with secondary antibody (5% skin milk in PBS) for 1 hour. Proteins were then identified on the G: Box iChemiXT Imager (Syngene, Cambridge, UK) after ECL-spray (Advanta, CA, USA).

As a result, the expression level of PHD2 was decreased in inverse proportion to the concentration of Compound 3, and the expression level of HIF-1α was increased in proportion to the concentration of Compound 3 (see FIGS. 19 and 20).

Claims (13)

1. A pharmaceutical composition for the prevention and treatment of stroke, comprising a compound represented by the following formula (1) or a salt thereof as an active ingredient.

[Chemical Formula 1]
Figure pat00005


The method according to claim 1,
Wherein the stroke is an ischemic stroke.
The method according to claim 1,
Wherein the salt is a physiologically acceptable salt with an inorganic acid, an organic acid, an inorganic base or an organic base.
The method according to claim 1,
Wherein the compound of Chemical Formula 1 is chemically synthesized or extracted from natural products.
The method of claim 4,
Characterized in that, when extracted from the natural product, it is obtained by isolating it from the buddhera officinalis .
The method of claim 5,
Wherein said separation is accomplished by extracting the wheat monomers with at least one solvent selected from the group consisting of methanol, ethanol, propanol and isopropanol.
The method of claim 6,
Wherein the solvent extraction is accomplished by simultaneous or sequential fractionation with one or more solvents selected from the group consisting of hexane, methylene chloride, ethyl acetate, butanol and water.
The method of claim 7,
Wherein said fraction is applied to a silica gel chromatography or a medium pressure liquid chromatography (MPLC) to achieve a single material separation.
The method according to claim 1,
The pharmaceutical composition comprises an inert carrier, a diluent, or both.
The method according to claim 1,
Wherein said pharmaceutical composition is formulated into an oral or parenteral formulation.
The method of claim 10,
The pharmaceutical composition may be in the form of tablets, capsules, pills, powders, granules, suspending agents, syrups, creams, lotions, ointments, liquids, gels, cataplasms, patches, aerosols, Wherein the pharmaceutical composition is formulated as a single preparation selected from the group consisting of a sachet and an injection.
The method according to claim 1,
Wherein said pharmaceutical composition is selected from the group consisting of aspirin, cilostazol, clopidogrel, sapoglylate, veraprost, tyropivan, urokinase, darbigatran, apixaban, ginkgo extract, napamostat, ribaroxan, ticlopidine, ≪ / RTI > or a pharmaceutically acceptable salt thereof.
(i) extracting the buddleja officinalis with at least one solvent selected from the group consisting of methanol, ethanol isopropanol and propanol,
ii) simultaneously or sequentially fractionating the extract obtained in the above step with at least one solvent selected from the group consisting of hexane, methylene chloride, ethyl acetate, butanol and water;
iii) applying the fraction obtained in the above step to silica gel chromatography or medium pressure liquid chromatography (MPLC); And
iv) Formulating the compound of formula (1) separated in the above step so that it can be administered to a patient
Lt; RTI ID = 0.0 > 1, < / RTI >

[Chemical Formula 1]
Figure pat00006

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