WO2010111935A1 - 一种新的丹酚酸化合物l、其制备方法和用途 - Google Patents

一种新的丹酚酸化合物l、其制备方法和用途 Download PDF

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Publication number
WO2010111935A1
WO2010111935A1 PCT/CN2010/071388 CN2010071388W WO2010111935A1 WO 2010111935 A1 WO2010111935 A1 WO 2010111935A1 CN 2010071388 W CN2010071388 W CN 2010071388W WO 2010111935 A1 WO2010111935 A1 WO 2010111935A1
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Prior art keywords
salvianolic acid
extract
water
group
acid
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PCT/CN2010/071388
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English (en)
French (fr)
Inventor
周水平
李伟
靳元鹏
马晓慧
韩建平
崔红芳
罗学军
陈晓鹏
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天津天士力制药股份有限公司
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Application filed by 天津天士力制药股份有限公司 filed Critical 天津天士力制药股份有限公司
Priority to RU2011139614/04A priority Critical patent/RU2529491C2/ru
Priority to SG2011069150A priority patent/SG174548A1/en
Priority to CA2756823A priority patent/CA2756823C/en
Priority to AU2010230770A priority patent/AU2010230770B2/en
Priority to MYPI2011004442A priority patent/MY183588A/en
Priority to EP10758037.5A priority patent/EP2415749B1/en
Priority to US13/259,244 priority patent/US20120041062A1/en
Priority to JP2012502437A priority patent/JP5755633B2/ja
Publication of WO2010111935A1 publication Critical patent/WO2010111935A1/zh
Priority to HK12107774.3A priority patent/HK1168584A1/zh

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C59/00Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
    • C07C59/40Unsaturated compounds
    • C07C59/42Unsaturated compounds containing hydroxy or O-metal groups
    • C07C59/52Unsaturated compounds containing hydroxy or O-metal groups a hydroxy or O-metal group being bound to a carbon atom of a six-membered aromatic ring
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/66Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
    • C07C69/73Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids
    • C07C69/732Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids of unsaturated hydroxy carboxylic acids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/185Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19Carboxylic acids, e.g. valproic acid
    • A61K31/192Carboxylic acids, e.g. valproic acid having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid 
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P39/00General protective or antinoxious agents
    • A61P39/06Free radical scavengers or antioxidants
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00Drugs for disorders of the cardiovascular system
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00Drugs for disorders of the cardiovascular system
    • A61P9/04Inotropic agents, i.e. stimulants of cardiac contraction; Drugs for heart failure
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00Drugs for disorders of the cardiovascular system
    • A61P9/10Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42Separation; Purification; Stabilisation; Use of additives

Definitions

  • the invention relates to the field of traditional Chinese medicine, and in particular relates to a novel salvianolic acid compound.
  • Salvia miltiorrhiza is the root of the genus Salvia, which is bitter and bitter, slightly cold, and is good for heart and liver. It has the effects of relieving pain, promoting blood circulation, clearing heart and removing trouble. Modern pharmacological studies have shown that Salvia miltiorrhiza has the functions of dilating coronary artery, improving microcirculation, and protecting the heart, inhibiting and relieving platelet aggregation, improving the body's ability to resist hypoxia, and anti-hepatitis, anti-tumor and anti-viral activities.
  • the salvianolic acid L of the present invention is a new compound in Salvia miltiorrhiza found in a large number of screening research processes, and the compounds and pharmacological actions involving the structure have not been reported so far.
  • a further object of the invention is to provide a pharmaceutical composition comprising salvianolic acid L.
  • a further object of the present invention is to provide a process for the preparation of salvianolic acid L.
  • a further object of the present invention is to provide the use of salvianolic acid L in the manufacture of a medicament for the treatment of cardiovascular diseases.
  • novel compounds of the present invention are of the formula (I) and pharmaceutically acceptable salts, solvates thereof and hydrolyzable esters thereof.
  • the phenolic acid novel compound of the present invention through physical and chemical properties of the compound, high resolution mass spectrometry (QFT-ESI), electrospray ionization mass spectrometry (ESI-MS), ⁇ -NMR, 13 C-NMR, DEPT, gCOSY, gHMBC, gHMQC map The identification confirmed its structure.
  • Replacement page (Article 26)
  • the compound of the present invention is a pale yellow powder.
  • the thin layer chromatography FeCl 3 reagent of the present invention showed a positive color reaction, suggesting that it may be a phenolic compound.
  • the molecular ion peak mfz 537 of the compound of the present invention easily removes the carboxyl group (-44) at the 8" position to form an ion of m/z 493 (the same structure as the ion peak of the salvianolic acid A molecule), and then according to Dan The cleavage of phenolic acid A produces ions of 313 and 295.
  • the compound of the present invention has the same skeleton structure as salvianolic acid A.
  • the information provided by the binding spectrum indicates that there are two 1,3,4-trisubstituted benzene rings and one 1 in the molecule. , 2,3,4-tetrasubstituted benzene ring, 1 trans double bond and 1 monosubstituted double bond; and these are consistent with the spectral characteristics of salvianolic acid compounds in Salvia miltiorrhiza.
  • the compound of the present invention may be a phenolic acid compound which is structurally similar to the phenolic acid compound in the reported salvia miltiorrhiza.
  • Salvianolic acid A compound of the invention
  • the compound of the present invention is spectrally close to salvianolic acid A, with the difference that there are two pairs of trans double bond protons in the 'H-NMR of salvianolic acid A, and The compounds of the present invention have only one pair of trans double bonds and one monosubstituted double bond proton; in 13 C-NMR, the compound of the present invention has a carbonyl carbon signal more than salvianolic acid A, while C-7" and C-8" The chemical shifts were shifted to the low field by 8 pp m and 6 ppm, respectively, thus indicating that the difference between the compound of the present invention and salvianolic acid A was replaced by a carboxyl group at C-7" or C-8".
  • the compound of the present invention is a novel salvianolic acid compound, which is named as salvianolic acid.
  • the spectral data may vary due to possible conformational and conformational changes in the compounds of the present invention. However, various isomers resulting from changes in conformation and conformation are within the scope of the present invention.
  • the salvianolic acid L of the present invention may also take the form of its pharmaceutically acceptable salt or solvate according to the ordinary skill in the art and the prior art.
  • the pharmaceutically acceptable salts of salvianolic acid L of the present invention include conventional, pharmaceutically acceptable
  • a salt formed by a base or an organic base which is prepared by a conventional salt formation method.
  • suitable salts include salts of sodium, potassium, lithium, magnesium, aluminum, calcium, zinc, etc., or with hydrazine, ⁇ '-dibenzylethylenediamine, chloroprocaine, choline, diethanolamine, B Diamine, guanidine-methylglucamine, procaine, berberine formed salts.
  • the salvianolic acid L mentioned below includes salvianolic acid L represented by the formula (I), and pharmaceutically acceptable salts, solvates thereof and hydrolyzable esters thereof.
  • the salvianolic acid L of the present invention is suitably administered in the form of a pharmaceutical composition.
  • Such compositions may be combined in a conventional manner with one or more physiologically acceptable carriers or excipients.
  • the salvianolic acid L of the present invention is therapeutically administered as a crude drug, and it is preferred that the active ingredient is directly used as a pharmaceutical preparation.
  • the carrier must be pharmaceutically acceptable in the sense of being compatible with the other ingredients and not deleterious to the subject.
  • the present invention further provides pharmaceutical formulations of the salvianolic acid L of the present invention, comprising the salvianolic acid L of the present invention and one or more pharmaceutically acceptable carriers, with or without other therapeutic and/or prophylactic ingredient.
  • These preparations are suitable for oral, parenteral (including subcutaneous injection or drug tablet; intradermal; intrathecal; intramuscular (eg, drug store; intravenous), rectal and topical (eg sublingual), but most suitable
  • the route of administration will depend on the condition of the patient.
  • the preparation may be a unit preparation and may be prepared by any method well known in the pharmaceutical art. All methods include the step of bringing the salvianolic acid L of the present invention into combination with a carrier which constitutes one or more accessory ingredients.
  • the preparation process of the preparation is as follows: uniformly and tightly combine the salvianolic acid L of the present invention with a liquid carrier, or a finely pulverized solid carrier, or both, and then, if necessary, shape the product It is a necessary preparation.
  • compositions of the present invention can be prepared by the use of standard pharmaceutical techniques, i.e., the salvianolic acid L of the present invention and a pharmaceutically acceptable carrier, including mixing, granulating, and compressing.
  • a pharmaceutically acceptable carrier including mixing, granulating, and compressing.
  • the pharmaceutically acceptable carrier used is various organic or inorganic carriers which can be administered in combination with the composition, for example: excipients, lubricants, binders, disintegrators and coating agents for solid preparations Pharmaceutical additives such as coloring agents and sweeteners can also be used.
  • the pharmaceutically acceptable carrier is selected from the group consisting of: sugar alcohols such as mannitol and sorbitol, sodium metabisulfite, sodium hydrogen sulfite, sodium thiosulfate, cysteine hydrochloride, thioglycolic acid, methionine, vitamin C, disodium EDTA, calcium EDTA Sodium, monovalent alkali metal carbonate, acetate, phosphate or its aqueous solution, hydrochloric acid, acetic acid, sulfuric acid, phosphoric acid, amino acid, sodium chloride, potassium chloride, sodium lactate, xylitol, maltose, glucose, fructose , dextran, glycine, starch, sucrose, lactose, mannitol, silicon derivatives, cellulose and its derivatives, alginate, gelatin, polyvinylpyrrolidone, glycerol, Tween 80, agar, calcium carbonate, carbonic acid Hydrogen calcium, sur
  • the pharmaceutical preparation form may be any pharmaceutically acceptable dosage form, and these dosage forms include: tablets, such as sugar-coated tablets, film-coated tablets, enteric coated tablets; capsules, such as hard capsules, soft capsules; oral liquids Oral granules; granules; granules; pills; powders; ointments; granules; suspensions; powders; solutions; injections; suppositories; ointments, such as ointments, salves; creams; Patch.
  • tablets such as sugar-coated tablets, film-coated tablets, enteric coated tablets
  • capsules such as hard capsules, soft capsules
  • the preparation of the present invention is preferably an oral dosage form such as a capsule, a tablet, an oral solution, a granule, a pill, a powder, a remedy, a plaster, etc.; and an injection such as a powder injection, an injection, an infusion or the like.
  • the preparation of the present invention is most preferably a tablet.
  • the preparation for oral administration may contain common excipients, binders, fillers, diluents, compressed tablets, lubricants, disintegrating agents, coloring agents, flavoring agents and humectants, if necessary, tablets may be used. Carry out the coating.
  • Preferred exemplary excipients include: lactose, D-mannitol, D-sorbitol, starches such as a-starch, dextrin, crystalline cellulose, low substituted hydroxypropylcellulose, sodium carboxymethylcellulose, arab Glue, amylopectin, light anhydrous silicic acid, synthetic aluminum silicate, aluminum magnesium silicate, and the like.
  • Preferred exemplary lubricants include: magnesium stearate, calcium stearate, talc, silica gel, and the like.
  • Preferred exemplary binders include: (X-starch, sucrose, gelatin, gum arabic, methylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, crystalline cellulose, sugar, D-mannitol, seaweed Sugar, dextrin, amylopectin, hydroxypropylcellulose, hydroxypropylmethylcellulose, pyrrolidone, and the like.
  • Preferred exemplary disintegrants include: lactose, sugar, starch, carboxymethylcellulose, calcium carboxymethylcellulose, sodium alkylammonium, sodium carboxymethyl starch, light anhydrous silicic acid, low substituted hydroxypropyl Cellulose and the like.
  • Preferred exemplary coating agents include: hydroxypropylmethylcellulose, hydroxypropylcellulose, ethylcellulose, carboxymethylcellulose, polyvinyl alcohol, and the like.
  • Preferred exemplary colorants include: water soluble edible yellow dyes (food dyes such as Edible Red No. 2 and No. 3, Edible Yellow No. 4 and No. 5, Edible Blue No. 1 and No. 2); Insoluble coloring dyes (such as the aluminum salts of the above water-soluble edible yellow dyes); natural dyes (such as carotene, chlorophyll, and iron oxide).
  • water soluble edible yellow dyes food dyes such as Edible Red No. 2 and No. 3, Edible Yellow No. 4 and No. 5, Edible Blue No. 1 and No. 2
  • Insoluble coloring dyes such as the aluminum salts of the above water-soluble edible yellow dyes
  • natural dyes such as carotene, chlorophyll, and iron oxide
  • Preferred exemplary sweeteners include: sodium saccharin, glycyrrhetinic acid, aspartame, stevia, and the like.
  • Tablets are generally prepared by compressing or molding the salvianolic acid L of the present invention with one or more pharmaceutically acceptable excipients.
  • the salvianolic acid L of the present invention can also be formulated into oral liquid preparations such as aqueous or oily suspensions, solutions, emulsions, syrups and the like.
  • the salvianolic acid L of the present invention may also be a dry product which is mixed with water or other suitable carrier before use.
  • Such liquid preparations may contain conventional additives, and may include suspending agents such as sorbitol syrup, methylcellulose, glucose/syrup, gelatin, hydroxyethylcellulose, carboxymethylcellulose, aluminum stearate gel or Hydrogenated edible fat; emulsifier, such as lecithin, sorbitan monooleate or gum arabic; non-aqueous carrier (which may include edible oils), such as almond oil, fractionated coconut oil, oily ester, propylene glycol or ethanol; Such as methyl or propyl paraben, sorbic acid.
  • suspending agents such as sorbitol syrup, methylcellulose, glucose/syrup, gelatin, hydroxyethylcellulose, carboxymethylcellulose, aluminum stearate gel or Hydrogenated edible fat
  • emulsifier such as lecithin, sorbitan monooleate or gum arabic
  • non-aqueous carrier which may include edible oils
  • almond oil fractionated coconut oil, oily ester, propylene
  • Formulations for parenteral administration include aqueous and non-aqueous sterile injectable solutions, which may contain antioxidants, buffers, bacteriostats, isotonic agents, and the like; and aqueous and nonaqueous sterile suspensions, which may Includes suspending agents and thickeners.
  • the formulations may be stored in single or multiple metering containers, such as sealed ampoules and vials, and may be stored under lyophilization (freeze-drying) conditions, requiring only the addition of a sterile liquid carrier, such as water for injection, prior to use.
  • the preparation for rectal administration may be a suppository containing a conventional suppository base such as cocoa butter, a hard fatty acid or other glyceryl ester, or ethylene glycol.
  • a conventional suppository base such as cocoa butter, a hard fatty acid or other glyceryl ester, or ethylene glycol.
  • Formulations for topical administration include lozenges wherein the active ingredient is included in the flavored base, such as sucrose and acacia, and soft lozenges containing the active ingredient in the base
  • the substrate can be gelatin and glycerin, or sucrose and gum arabic.
  • the salvianolic acid L of the present invention can also be formulated into a drug depot preparation. Such long acting formulations may be administered by implantation (for example subcutaneously or intramuscularly) or by intramuscular injection.
  • the salvianolic acid L of the present invention can be formulated with a suitable polymer or hydrophobic material (e.g., an emulsion in an acceptable oil) or an ion exchange resin, or as a sparingly soluble derivative, such as a sparingly soluble salt.
  • Therapies contemplated by the present invention include prophylaxis and treatment of a given disease or condition, according to ordinary skill in the art and prior art.
  • the amount of the salvianolic acid L of the present invention required for treatment will vary depending on the nature of the condition being treated and the condition of the patient, or as directed by the physician.
  • the dosage for adult treatment will generally range from 0.02 to 5000 mg/day, preferably from 1 to 1500 mg/day.
  • the desired dose may be a single dose or multiple doses administered at appropriate intervals, for example, two, three, four or more times per day.
  • the preparation according to the invention may contain from 0.1 to 99% by weight of active ingredient, preferably from 30 to 95% by weight of active ingredient for tablets and capsules, and preferably from 3 to 50% by weight of active ingredient for liquid preparations.
  • the extract obtained in the step (2) is passed through a silica gel column, dry-loaded, and the eluent is chloroform-methanol-formic acid, and the eluent is isocratically eluted; the thin layer chromatography is used for monitoring. During the elution process, the same eluate was combined to obtain the salvianolic acid 1 ⁇ .
  • the mixture of Salvia miltiorrhiza or Dan is involved in other herbs, and may be cut into pieces, pulverized into granules or powder, preferably into a piece;
  • the Salvia miltiorrhiza is preferably root of Salvia miltiorrhiza;
  • It may be a Chinese medicinal material known to those skilled in the art and compatible with Salvia miltiorrhiza, preferably Panax notoginseng, Astragalus and/or Shouwu.
  • the water extraction step is to add 4-8 times the volume of the medicinal material, preferably 4 times; decocting 1.5-3.5 h, preferably 2 h; filtering; the dregs continue to use 3-6 Decoction for l-3h, preferably 3 times the amount of water for 1h; filtered, the filtrate is combined, concentrated to a relative density of 1.11-1.28 (80 ° C) extract, preferably relative density of 1.2 (80 ° C ) The extract.
  • the water extraction step is preferably carried out using an aqueous solution of a base, preferably sodium hydrogencarbonate, sodium carbonate, sodium hydroxide, potassium hydrogencarbonate, potassium carbonate and hydrogen.
  • At least one of the group consisting of potassium oxide is further preferably sodium hydrogencarbonate or sodium hydroxide; and the aqueous solution of the base is 0.30% to 0.68% of sodium hydrogencarbonate or 0.0025%. -0.004%.
  • Sodium hydroxide preferably 0.45% sodium bicarbonate.
  • the alcohol precipitation step is carried out by adding 95% ethanol to the extract to carry out alcohol precipitation to 65%-70% (25 ° C), preferably 70%, and letting stand for 12-36 hours, preferably resting. 24h; Ethanol is recovered under reduced pressure and concentrated to an extract having a relative density of 1.30 to 1.38 (60 ° C), preferably an extract having a relative density of 1.37 (60 ° C).
  • the alcohol extraction step is to add 5-8 times the volume of the medicine, 50%-95% ethanol, and decoct 2 times, each time l-2h, After filtration, the alcohol extract is discarded, and the dregs are continuously extracted according to the water extraction step described above.
  • the macroporous adsorption resin column may be a non-polar active weakly polar resin, for example, AB-8 type, HPD450, HPD700, D101, D4020 or X5 type macroporous adsorption resin, preferably AB -8 type; the weight ratio of the original medicinal material to the macroporous adsorption resin is 5:1-1:1, preferably 4:1; rinsing with 8-15 times the volume of the bed volume, preferably using 12 times the volume of the bed Rinse with water.
  • AB-8 type HPD450, HPD700, D101, D4020 or X5 type macroporous adsorption resin, preferably AB -8 type
  • the weight ratio of the original medicinal material to the macroporous adsorption resin is 5:1-1:1, preferably 4:1
  • rinsing with 8-15 times the volume of the bed volume preferably using 12 times the volume of the bed Rinse with water.
  • the aqueous eluate is adjusted with hydrochloric acid to a pH of 2.2-3.5, preferably 3.0.
  • the acidic aqueous eluate is again passed through the macroporous adsorption resin, and the weight ratio of the original drug to the macroporous adsorption resin is 5:1 to 1:1, preferably 4:1; and the hydrochloric acid is washed with a pH of 2.2-3.5, preferably 3.0. Nearly colorless.
  • the extract is concentrated in the step (2) to dissolve the extract in an organic solvent, preferably dissolved in methanol; and the sample is added to the chromatographic silica gel, preferably by adding 200-300 mesh chromatography silica gel with a weight of the extract or the like.
  • the sample is placed on a packed silica gel column, preferably 200-300 mesh silica gel; eluted with chloroform-methanol-formic acid (90:10:3-40:10:0.5), preferably chloroform-methanol-formic acid (85:15:3), the elution process may be isocratic elution (ie, the eluent ratio is unchanged), or may be a gradient elution (ie, eluent ratio change), the gradient
  • the elution can be adjusted according to the common knowledge in the art according to the polarity of the substance to be collected, for example, the polarity of the eluate is gradually increased from small to small; in order to accurately follow the elution progress, chloroform-methanol-formic acid (50) is preferred. :10:2) Monitored by thin layer chromatography for the developing agent.
  • the results of the drug efficacy test showed that the free radical scavenging power of salvianolic acid L was significantly greater than that of vitamin C (Table 3 and Figure 9); and the reducing power of salvianolic acid L was significantly stronger than that of vitamin C (Fig. 10). .
  • the salvianolic acid L of the present invention also has an activity of inhibiting oxidation and scavenging free radicals. Therefore, the salvianolic acid L of the present invention can also be used for the preparation of a medicament having a scavenging activity or a prophylactic antioxidant function.
  • the invention further relates to the use of salvianolic acid L in the manufacture of a medicament for the treatment of cardiovascular diseases.
  • the cardiovascular disease includes at least one selected from the group consisting of vasodilation dysfunction caused by hypoxia; extracellular nerve cell damage caused by hypoxia, hypoglycemia and peroxidation, and acute myocardial ischemia.
  • the salvianolic acid L of the invention has a wide range of pharmacological effects in the cardiovascular system, can reduce vascular endothelial damage caused by ischemia and hypoxia, promote vascular endothelial proliferation, and can improve myocardial cell damage caused by ischemia and hypoxia, and resist arterial Atherosclerosis, inhibition of platelet aggregation and antithrombotic effects.
  • Salvianolic acid L also has a dilated coronary artery that increases coronary flow; and protects against cerebral ischemic injury.
  • the salvianolic acid L of the invention has a significant improvement effect on the damage of the nerve cells in vitro caused by hypoxia, hypoglycemia and hydrogen peroxide damage, can improve the cell survival rate, and has the functions of protecting hypoxia, lack of sugar and The function of nerve cells in an oxidized state (Table 12-15).
  • the results of the pharmacodynamic test of the present invention also show that the salvianolic acid L of the present invention has an anti-acute myocardial ischemia effect (Table 16-17).
  • Figure 4 is a 13 C-NMR chart of salvianolic acid L, 125 MHz, CD 3 OD.
  • FIG. 13 Electrocardiogram (ECG) after administration of vasopressin in the pituitary.
  • ECG Electrocardiogram after administration of vasopressin in the pituitary.
  • A the normal electrocardiogram of the model control group
  • B the electrocardiogram of the model control group 15 seconds after administration of the vasopressin
  • C the electrocardiogram of the model control group 30 seconds after the administration of the vasopressin.
  • the obtained extract was dissolved in water, passed through an AB-8 macroporous adsorption resin, and rinsed with 12 volumes of bed volume of water, and the aqueous eluate was adjusted to pH 3.0 with hydrochloric acid.
  • the acidic aqueous eluate was again passed through the AB-8 macroporous adsorption resin, rinsed to an almost colorless state with an acidic aqueous solution of pH 3.0, and eluted with 4 times the amount of 95% ethanol, and the eluate was concentrated to a concentrated extract.
  • the eluate is concentrated to an alcohol-free taste to obtain an extract.
  • the obtained extract was dissolved in methanol, and a considerable weight of 200-300 mesh chromatography silica gel was added, and the sample was placed on a packed silica gel column with chloroform-methanol-formic acid (85:15:3). Elution, detection by thin layer chromatography, and the same type of eluate is combined to obtain salvianolic acid L.
  • the DEPT spectrum shows the presence of lxCH 2 , 12xCH, 14> ⁇ C in the molecule.
  • the obtained extract was dissolved in water, passed through an AB-8 macroporous adsorption resin, rinsed with 12 volumes of bed volume of water, and the aqueous eluate was adjusted to pH 2.5 with hydrochloric acid.
  • the acidic aqueous eluate was again passed through the AB-8 macroporous adsorption resin, rinsed to an almost colorless state with an acidic aqueous solution of pH 3.0, and eluted with 5 times the amount of 95% ethanol, and the eluate was concentrated to a concentrated extract.
  • the eluate is concentrated to an alcohol-free taste to obtain an extract.
  • the DEPT spectrum shows the presence of l xCH 2 , 12xCH, 14xC in the molecule.
  • the dregs were added with 4 times the volume of water (containing 0.45% sodium bicarbonate), boiled for 2 h, and filtered; the dregs were further boiled for 3 h with water, filtered, and the filtrate was concentrated to a relative density of 1.2 (80 °C) extract; add 95% ethanol to the extract to 70% (25 °C), let stand for more than 12h, recover ethanol under reduced pressure, and concentrate to a relative density of 1.37 (60 ° C) The extract.
  • the obtained extract was dissolved in water, passed through an AB-8 macroporous adsorption resin, and rinsed with 12 volumes of bed volume of water, and the aqueous eluate was adjusted to pH 3.0 with hydrochloric acid.
  • the acidic aqueous eluate was again passed through the AB-8 macroporous adsorption resin, rinsed to an almost colorless state with an acidic aqueous solution of pH 3.0, and eluted with 4 times the amount of 95% ethanol, and the eluate was concentrated to a concentrated extract.
  • the eluate is concentrated to an alcohol-free taste to obtain an extract.
  • the obtained extract was dissolved in methanol, and a considerable weight of 200-300 mesh chromatography silica gel was added, and the sample was placed on a packed silica gel column with chloroform-methanol-formic acid (85:15:3). Elution, detection by thin layer chromatography, and the same type of eluate is combined to obtain salvianolic acid L.
  • the salvianolic acid L and other excipients in the prescription are respectively passed through a 100 mesh sieve, and the prescription amount of salvianolic acid L and the microcrystalline cellulose, starch and sodium carboxymethyl starch are uniformly mixed by the equal amount, and an appropriate amount of 5% PVP is used.
  • Salvianolic acid L and other excipients in the prescription are passed through a 100 mesh sieve, and the prescription amount of salvianolic acid L is mixed with starch and sodium carboxymethyl starch by equal amount addition method, and softened with an appropriate amount of 5% PVP anhydrous ethanol solution.
  • the material was sieved by 14 mesh, dried at 50-60 ° C for 1 h, and the prescribed amount of magnesium stearate was added to the sieve with a 14 mesh sieve.
  • Free radicals are a class of highly active substances that can be continuously produced during cellular metabolism. They can exert strong oxidation directly or indirectly, and participate extensively in the physiological and pathological processes of the body. Excessive free radicals in the body can attack life macromolecules such as nucleic acids, proteins, sugars and lipids through oxidation, causing them to undergo peroxidative degeneration, cross-linking and cleavage, thereby causing damage to cell structure and function. , resulting in tissue destruction and degenerative changes in the body. Numerous studies have shown that free radicals are involved in the pathological processes of many diseases, thereby inducing diseases such as cardiovascular disease, certain cancers, senile cataracts and macular degeneration, certain inflammations, and various neuronal diseases.
  • the salvianolic acid compound is a donor of phenolic hydroxyl groups and has a structural basis of antioxidant activity.
  • the present invention uses 1,1 -diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging reaction model to observe the scavenging efficiency of salvianolic acid L on free radicals.
  • DPPH 1,1 -diphenyl-2-picryl-hydrazyl
  • Salvianolic acid L having a purity of 95% or more, was supplied by Tianjin Tianshili Group Research Institute and prepared according to the method of Example 1. Both Vitamin C and DPPH were purchased from SIGMA.
  • UV spectrophotometer UV-1800 purchased from Beijing Ruili Analytical Instrument Co., Ltd.
  • the total volume of the reaction was 2 ml. 1 ml of different concentrations of sample 80% methanol solution was added to ⁇ ⁇ DPPH methanol solution, mixed and reacted in the dark for 25 min for 20 min, and the absorbance of the reaction solution at 517 nm was measured. Vitamin C was used as a positive comparison in the experiment.
  • the free radical scavenging rate is calculated using the following formula:
  • a sample is the absorbance value of the test sample
  • A. . Ntral is the absorbance value of the untested sample.
  • Table 3 and Figure 9 show the clearance of DPPH free radicals by different concentrations of salvianolic acid L and vitamin C.
  • the free radical scavenging power of salvianolic acid L is significantly greater than the free radical scavenging power of vitamin C.
  • the magnitude of the drug's reducing power reflects the strength of its preventive antioxidant function to some extent.
  • the present invention conducts an experimental study on the reducing power of salvianolic acid L.
  • Salvianolic acid L purity 95% or more, was supplied by Tianjin Tianshili Group Research Institute and prepared according to the method of Example 1. Potassium ferricyanide, analytically pure, purchased from Tianjin Chemical Reagent No. 1 Plant.
  • Ferric chloride analytically pure, purchased from Tianjin Sailboat Chemical Reagent Technology Co., Ltd.
  • Vitamin C was purchased from Sigma.
  • UV spectrophotometer UV-1800 was purchased from Beijing Rayleigh Analytical Instruments Co., Ltd.
  • Refrigerated centrifuge Z323K, purchased from HEMMLE, Germany.
  • Figure 10 shows that both absorbance increases with increasing concentration.
  • the reducing power of salvianolic acid L is significantly stronger than that of vitamin C.
  • the materials used were all from the Institute of Traditional Chinese Medicine of Tianjin Tianshili Group Research Institute.
  • the content of the extract 1 is: 6.825 g of crude drug / g ; the content of the extract 2 is: 4.162 g of crude drug / g.
  • Salvianolic acid L The method of Example 1 of the present invention.
  • Salvianolic acid L 0 Pharmacological effect 3 The effect of salvianolic acid L lyophilized powder on isolated thoracic aorta in rats
  • Test substance and reagent Salvianolic acid L freeze-dried powder, from Tianjin Tianshili Group Research Institute of Traditional Chinese Medicine; norepinephrine (NA); acetylcholine (ACH): sigma company, batch number: 1377511 44908131; K-liquid preparation materials: potassium chloride, sodium chloride, potassium dihydrogen phosphate, sodium hydrogencarbonate, magnesium sulfate, glucose, calcium chloride.
  • MedLab isolated tissue bath and Medlab-U / 8C acquisition system Nanjing Meiyi Technology Company; Zhang force transducer; CNC super constant temperature tank SC-15; analytical balance; pure water meter; oxygen cylinder.
  • mice SD rats, suitable for both body weight and male and female, were provided by Beijing Weitong Lihua Experimental Animal Technology Co., Ltd., certificate: SCXK (Beijing) 2007-0001. It is kept in the animal word room, room temperature 20-25 °C, lighting time 12h, special feed for food rats (produced by Beijing Keao Xieli Feed Co., Ltd.), drinking tap water.
  • the dose of salvianolic acid L lyophilized powder is based on the efficacy test of other salvianolic acid.
  • the dose of this experiment is designed to be O. lmg/mL K's solution (mol/L): NaCl (120), NaHC0 3 (25), KH 2 P0 4 ( 1.2 ), MgS0 4 ( 1.2 ), KC1 (4.5 ), CaCl 2 ( 1.25 ), C 6 H 12 0 6 (glucose 11.1 )
  • KC1 3mol/L KC1 solution is added to ⁇ ⁇ (final concentration 60mmol/L)
  • Rats were given a free diet and were randomly assigned to a group based on the drug formulation of the day. Eight animals per group were guaranteed, and each animal had data for four vascular rings. It was divided into normal group, hypoxia model group and salvianolic acid L hypoxia group.
  • SD rats were given a free diet and were randomly assigned to a group of 8 according to the drug formulation of the day.
  • the animal was sacrificed by cervical vertebrae, the thoracic cavity was quickly opened, and the thoracic aorta was removed.
  • the connective tissue was removed at 0 °C in oxygen, and the thoracic aorta was modified into a ring of about 2 mm.
  • the basis of the tension is 2g, the vascular ring is balanced for 45 minutes, and the K-solution is replaced every 15 minutes.
  • hypoxia model group 0.01 ⁇ 0.05 0.23 ⁇ 0.41 1.12 ⁇ 0.31 1.37 ⁇ 0.31 salvianolic acid Hypoxia group 0.1 -0.02 ⁇ 0.06 0.30 ⁇ 0.33 0.84 ⁇ 0.38 1.05 ⁇ 0.48
  • the lyophilized powder of salvianolic acid L can cause a certain right shift in the vasoconstriction curve of norepinephrine, but there is no significant difference.
  • Hypoxia 20min gradient relaxation can lead to vascular significantly decreased (P ⁇ 0.01) on carbachol-induced model group, there diastolic dysfunction; Sal L lyophilized gradient hypoxic vascular rings (10-5 in three ACH, 10- 4, 10- 3 mol / L ) of vasodilation were significantly enhanced (P ⁇ 0.05). It is indicated that salvianolic acid L has a significant improvement effect on vasodilation dysfunction caused by hypoxia.
  • Ultra-clean workbench (Antai Purification Equipment Co., Ltd.), constant temperature C0 2 incubator (Heraeus, Germany) Enzyme-linked immunosorbent assay (US BIO-RAD), plate shaker (Jiangsu Guangming Experimental Instrument Factory), Inverted biological microscope (Japan OLYMPUS).
  • DMEM high glucose medium DMEM high glucose medium
  • DMEM sugar-free medium GIBCO
  • trypsin SIGMA
  • fetal bovine serum PAA
  • MTT Sigma
  • DMSO Sigma
  • LDH test kit Najing Institute of Bioengineering
  • Cell viability % (OD value of the administration group / OD value of the negative control group; ) ⁇ 100%
  • ODu is the absorbance value of the sample to be tested
  • OD c is the sample control absorbance value
  • OD B is the blank tube absorbance value
  • 00 3 is the pair The absorbance of the liquid
  • C s is the standard concentration (2mmol / L)
  • N is the dilution factor before the test.
  • Solvent control group Forced 0.1% DMSO.
  • Model group 3 ⁇ 40 2 concentrations were 0.25 mM, 0.5 mM, and lmM, respectively, for 1 h.
  • Positive control group Edaravone (2 g/ml) was used as a positive control. After the addition, the cells were pretreated for 6 h, added with 0.5 mM 3 ⁇ 40 2 for 1 h, and then replaced with fresh DMEM + 10% FBS medium, 200 ⁇ l/well.
  • Experimental grouping and treatment The experiment was divided into 3 groups, which were blank control group (normoxia+0.1% DMSO), model group (OGD+0.1% DMSO, hypoxia and hypoglycemia), positive control group (Idarafen). ).
  • Model group The cells of the culture plate were changed to sugar-free DMEM medium, placed in an anoxic chamber, and timed from 0 2 % ⁇ 2.6 for 0.5 h, and then transferred to a normal incubator.
  • Positive control group Edaravone (2 ⁇ ⁇ / ⁇ 1 ) was used as a positive control. After the drug was added, after pretreatment for 6 hours, the sugar-free DMEM medium was changed to 180 ⁇ l/well, re-dosed, placed in an anoxic chamber, and counted for 0.5 h from 0 2 % ⁇ 2.6, and then transferred to a normal incubator. Cultivate for a while and then measure
  • the hypoxic and hypoglycemic model of the experiment was as follows: The cells were replaced with sugar-free DMEM medium, placed in an anoxic chamber, and timed from 0 2 % ⁇ 2.6 for 0.5 h, transferred to a normal incubator, and cultured for a period of time before measurement.
  • Model group 3 ⁇ 40 2 concentration 0.5 mM, acting for 1 h.
  • Positive control group Edaravone (2 ⁇ ⁇ / ⁇ 1) was used as a positive control. After adding cells for 6 h, the cells were added with 0.5 mM 3 ⁇ 40 2 for 1 h, and then replaced with fresh DMEM + 10% FBS medium.
  • Drug treatment group After adding cells to the culture plate, first add different concentrations of different test drugs, 20 ⁇ 1/well, pre-treatment for 6h, 0.5mM H 2 O 2 damage for 1h, and then switch to fresh DMEM + 10% FBS medium. .
  • the three concentrations of the drug were prepared in 0.1%, 0.01%, and 0.001% DMSO, respectively, compared to the corresponding concentration of the solvent control group.
  • the drug treatment group was compared with the model group (0.5 mM H 2 0 2 + EtOAc ).
  • the model group (H 2 0 2 + EtOAc) was compared to the solvent control (EtOAc).
  • the drug treated group was compared to the model group (0.5 mM H 2 0 2 + EtOAc) and the model group (H 2 0 2 + EtOAc) group was compared to the solvent control (EtOAc).
  • Experimental grouping and treatment The experiment was divided into 4 groups, which were blank control group (normoxia+0.1% DMSO), model group (OGD+DMSO, hypoxia and hypoglycemia), positive control group (edaravone), Drug treatment group.
  • Model group The cells in the culture plate were replaced with sugar-free DMEM medium, placed in an anoxic chamber, and timed from 0 2 % ⁇ 2.6 for 0.5 h, transferred to a normal incubator, and cultured overnight.
  • Positive control group Edaravone (2 g/ml) was used as a positive control. After the drug was added, after 6 hours of pretreatment, it was replaced with sugar-free DMEM medium, 180 ⁇ l/well, re-dosed, placed in an anoxic chamber, and timed from 0 2 % ⁇ 2.6 for 0.5 h, transferred to a normal incubator, overnight. to cultivate.
  • Drug treatment group After adding different concentrations of drugs, after pretreatment for 6h, change to sugar-free DMEM medium, 180 ⁇ 1/well, re-dosing, placed in anoxic chamber, timed from 0 2 % ⁇ 2.6 for 0.5h, transfer Into the normal incubator, overnight culture.
  • the dose of salvianolic acid L was 0.02, 0.2 ⁇ ⁇ / ⁇ 1 ⁇ , and the survival rates were 48% (P ⁇ 0.01) and 37% (P ⁇ 0.05), respectively.
  • the survival rate was 40% (P ⁇ 0.01)> 42% (P ⁇ 0.01); salvianolic acid L extract 2 was 0.02, 0.2, 2 g.
  • the survival rates were 47% (P ⁇ 0.01), 47% (P ⁇ 0.01), and 41% (P ⁇ 0.05), respectively.
  • the dosage of dry powder of salvianolic acid L was 2 g/ml ⁇ , and the activity of LDH was 40 (P ⁇ 0.05); the dose of salvianolic acid L extract 1 was 2 g/ml ⁇ , and the activity of LDH was 31 (P ⁇ 0.01); Salvianolic acid L extract 2 dose was 0.2 g / ml ⁇ , LDH activity was 31 (P ⁇ 0.05).
  • the lyophilized powder of salvianolic acid L can significantly improve the damage of nerve cells in vitro caused by hypoxia and hypoglycemia and hydrogen peroxide damage, can improve cell survival rate, and protect nerve cells under hypoxia, hypoglycemia and peroxidation.
  • Test substance and reagent Pit injection, produced by Nanjing Xinbai Pharmaceutical Co., Ltd., batch number: 070302; normal saline, produced by Tianjin Tianan Pharmaceutical Co., Ltd., specification 500ml/bottle, batch number: 200605241.
  • mice SD rats, suitable for both body weight and male and female, were provided by Beijing Weitong Lihua Experimental Animal Technology Co., Ltd., certificate: SCXK (Beijing) 2007-0001. It is kept in the animal feeding room, room temperature 20-25 °C, lighting time 12h, special feed for rats (produced by Beijing Keao Xieli Feed Co., Ltd.), drinking tap water.
  • the content of the extract 1 is: 6.825 g of crude drug / g.
  • the content of the extract 2 is: 4.162 g of crude drug / g.
  • both the extract 1 and the extract 2 were set in the high and low dose groups, respectively, and the doses were 1.086 g crude drug/kg and 0.543 g crude drug/kg, respectively.
  • the high-dose salvianolic acid L lyophilized powder is administered at a dose of 4.67 mg/kg
  • the low-dose salvianolic acid L lyophilized powder is administered at a dose of 2.33 mg/kg.
  • Extract 2 does not contain salvianolic acid L.
  • Salvianolic acid L lyophilized powder dosage 10.0mg/kg, 5.0mg/kgo
  • the pituitary vasopressin (Ph) (1U/kg) was injected into the tail vein of the rats before the formal experiment.
  • the electrocardiogram was normal and 5 min after the injection.
  • the J-point elevation and T-wave abnormalities were observed and appeared before the injection.
  • the selected rats were randomly divided into 7 groups, which were 1 model control group; 2 Danshen extract 1 low dose group (group A); 3 salvia miltiorrhiza extract 1 high dose group (group B); 4 salvia miltiorrhiza extract 2 low dose group (Group C); 5 Danshen extract 2 high dose group (D group); 6 salvianolic acid L lyophilized powder low dose group (E group); 7 salvianolic acid L lyophilized powder high dose group (F group);
  • Rats in the model control group were intragastrically administered with an equal volume of physiological saline per day, and the administration group was administered an aqueous suspension of different samples daily, and all animals were continuously administered for 7 days. 40 min after the last dose, the rats were anesthetized, connected to the instrument, and the normal lead electrocardiogram of the II lead was traced. Pituitary vasopressin was injected at a constant rate from the tail vein of rats according to lU/kg body weight
  • J-point definition J-point is the junction of the end of the QRS complex and the intersection of the ST segment.
  • the pituitary vasopressin can contract coronary vessels, causing acute myocardial ischemia in rats, and the J-point and T-wave of ECG in rats are significantly increased. If a certain test substance is given, the J-point displacement of the drug-administered group is obviously restored, and the T wave also shows a downward trend, which gradually becomes normal, indicating that the drug has an acute myocardial deficiency caused by antagonizing the contraction of the vasopressin of the pituitary. Blood effect.
  • phase I abnormality an abnormality caused by pituitrin in 0-45s
  • phase II abnormality a abnormality caused by pituitrin in 45s-15min
  • the pituitrin should use the same batch number, in order to avoid differences in drug potency and affect the results. Repeated injection of pituitrin should be separated by more than 2 hours to avoid tolerance. It is best to use the selected animals the next day.

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Abstract

本发明涉及一种新的丹酚酸类化合物 L、其制备方法、含有丹酚酸 L的药物组合物及其在 制备治疗心脑血管的药物中的应用。

Description

—种新的丹酚酸化合物1_、 其制备方法和用途 技术领域
本发明涉及中药领域, 具体涉及一种新的丹酚酸类化合物。
背景技术
丹参为唇形科鼠尾草属植物的根部, 性味苦, 微寒, 归心、 肝经, 具有祛瘀止痛、 活血通 经、 清心除烦之功效。 现代药理研究证明, 丹参具有扩张冠脉、 改善微循环、 保护心脏的作 用, 能抑制和解除血小板聚集, 提高机体耐缺氧能力以及抗肝炎、 抗肿瘤和抗病毒等活性。
2001年, 中国医学科学院协和医科大学药物研究所报道了丹参及其同属植物的水溶性活性成分 共计 13种酚酸类化合物, 包括丹酚酸 A、 B、 C、 D、 E、 F、 G、 H、 I、 J、 紫草酸、 迷迭香酸 及异丹酚酸 C等 (黎莲娘等人《医学研究通讯》 2001年第 30卷第 7期), 并报道了这 13种酚 酸类化合物的药理作用。 2002年, 热娜 _卡斯木等报道了丹酚酸 K的化学结构 (热娜,卡斯木等 人《新疆医科大学学报》 2002年第 25卷第 3期)。 国外也对丹参水溶性活性成分进行了研究。
1999年, 美国乔治顿大学就 "丹参酚酸类 13个化学结构抗 HIV整合酶和其他病毒" 申请并获 得了美国专利, 表明丹参是一种极具潜力和开发价值的药用植物资源。
本发明所述的丹酚酸 L, 正是在大量筛选研究过程发现的丹参中一个新化合物, 而且涉及 该结构的化合物及药理作用迄今尚未见有报道。
发明内容
本发明的目的是提供一种新的丹酚酸化合物 L。
本发明进一步的目的是提供含有丹酚酸 L的药物组合物。
本发明的又一目的是提供丹酚酸 L的制备方法。
本发明的再一目的是提供丹酚酸 L在制备治疗心血管疾病的药物中的应用。
本发明涉及的新化合物的结构式 ( I ) 及其药学上可接受的盐、 其溶剂化物和可水解的 酯。
Figure imgf000003_0001
I
本发明的酚酸类新化合物, 经过化合物的理化性质、 高分辨质谱 (QFT-ESI)、 电喷雾质谱 (ESI-MS )、 Ή-NMR, 13C-NMR, DEPT, gCOSY, gHMBC, gHMQC 图谱的鉴定, 确证了 其结构。 替换页 (细则第 26条) 本发明的化合物为淡黄色粉状。
本发明的化合物的薄层层析 FeCl3试剂显色反应呈阳性, 提示其可能为酚类化合物。
高分辨质谱 (QFT-ESI ) 给出准分子离子峰 [M-H]+ m/z = 537.1034 , 确定其分子式为 C27H22012 , 不饱和度 Ω= 17。
电喷雾质谱中, 本发明化合物的分子离子峰 mfz 537易脱去 8"位的羧基 (-44)生成 m/z 493 的离子 (与丹酚酸 A分子离子峰的结构相同), 然后按照丹酚酸 A的裂解规律生成^ 313、 295 的离子。
丹酚酸 A的质谱裂解规律-
Figure imgf000004_0001
可见几个主要离子 /n/z 493、 313、 295均是丹酚酸 A质谱图的主要峰。 所以, 本发明的化 合物具有与丹酚酸 A相同的骨架结构。
Ή-NMR (氢谱) 提示分子中有 1个连氧次甲基质子信号 δ 5.09 (1 H, dd, J=8.0, 4.5 Hz); 1 1 个芳香质子信号 δ 6.88 (1H, d, J=8.5 Hz)、 δ 7.25 (1H, d, J=8.5 Hz)、 δ 7.59 ( 1H, d, J= 16.0 Hz)、 δ 6.22 (1H, d, J=16.0 Hz)、 δ 6.68 ( 1H, s)、 δ 6.55 (2H, d, J=8.0 Hz)、 δ 6.58(1 H, d, J=2.0 Hz)、 δ 6.69(1H, d, J=8.0 Hz)、 δ 6·54(1 Η, dd, J=8.5, 2.0 Hz), δ 7.92(1H, s); 2个脂肪族质子信号 δ 3.01 (2Η, ddd, J=14.0, 8.0, 4.5 Hz)。
13C-NMR (碳谱) 给出 27个碳信号, 其中 1个脂肪碳信号 δ 39.6, 1个连氧次甲基碳信号 δ 76.4 , 3个羰基碳信号 δ 170.1、 δ 173.0、 5 175.1 , 22个双键碳信号 δ 117.4、 δ 117.8、 δ
117.8、 δ 118.2、 δ 119.2、 δ 120.2、 δ 121.7、 δ 123.7、 δ 125.7、 δ 126.6、 δ 128.0、 δ 128.8、 δ
129.9、 δ 130.9、 δ 146.2、 δ 146.5、 δ 146.9、 δ 147.4、 δ 147.7、 δ 147.8、 δ 150.3、 δ 150.9 =, 替换页(细则笫 26条) DEPT谱显示分子中存在 l xCH2、 12xCH、 14 <C。
根据 1 H-NMR谱中芳香质子的化学位移及其相互之间的偶合情况, 结合 谱所提 供的信息, 可推知分子中存在 2个 1,3,4-三取代的苯环、 1个 1,2,3,4-四取代的苯环, 1个反式 双键及 1个单取代双键; 而这些与丹参中丹酚酸类化合物所具有的谱学特征相吻合。
综合以上信息初步推测本发明的化合物可能为酚酸类化合物, 其结构上与已报道的丹参中 的酚酸类化合物类似。
Figure imgf000005_0001
丹酚酸 A 本发明化合物
通过与现有技术比较及相关谱学对照, 发现本发明的化合物在谱学上与丹酚酸 A接近, 差 别在于丹酚酸 A的 'H-NMR中有两对反式双键质子, 而本发明的化合物只有一对反式双键及一 个单取代双键质子; 13C-NMR中, 本发明化合物比丹酚酸 A多出一个羰基碳信号, 同时 C-7" 和 C-8"的化学位移分别向低场位移 8ppm和 6ppm, 由此说明本发明的化合物与丹酚酸 A的差 别在 C-7"或 C-8"被羧基所取代。
为了进一步确认 C-7"和 C-8"的取代情况, 进行了本发明化合物的 2D-NMR测试, 在其 HMBC谱中 H-7"与 C-9"、 C-2"、 C-2及 C-6"间存在远程偶合, 据此可以推知本发明化合物的 C-8"被羧基所取代。
所以, 通过与现有技术比较, 本发明的化合物为一新的丹酚酸类化合物, 将其命名为丹酚 酸
Figure imgf000005_0002
在提取制备过程中, 由于本发明的化合物可能发生构型、 构象的变化, 因此, 波谱数据可 能会有所变化。 但由构型、 构象变化所产生的各种异构体均在本发明的保护范围之内。
根据本领域的普通技术知识和现有技术, 本发明的丹酚酸 L还可以利用其药学上可接受的 盐或溶剂化物的形式。 本发明的丹酚酸 L的药学上可接受的盐包括常规的、 药学上可接受的无
替换页 (细则第 26奈) 机碱或有机碱生成的盐, 所述的盐通过常规的成盐方法制备而得。 适合的盐的实例包括钠、 钾、 锂、 镁、 铝、 钙、 锌等的盐, 或与 Ν,Ν'-二苄基乙二胺、 氯普鲁卡因、 胆碱、 二乙醇胺、 乙二胺、 Ν-甲基葡糖胺、 普鲁卡因、 黄连素形成的盐。 下文所提到的丹酚酸 L包括式 (I ) 所 表示的丹酚酸 L及其药学上可接受的盐、 溶剂化物和可水解的酯。
本发明的丹酚酸 L适宜以药物组合物的形式给药。 这类组合物可以按照常规方式与一种或 多种生理上可接受的载体或赋形剂混合使用。 若有可能, 在治疗上将本发明的丹酚酸 L作为原 料药给药, 优选活性成分直接作为药物制剂。 在与其他成分相容和对服药者无害的意义上, 载 体必须是药学上可接受的。
因此, 本发明进一步提供本发明的丹酚酸 L的药物制剂, 包括本发明的丹酚酸 L和一种或 多种药学上可接受的载体, 以及含有或不含其他治疗和 /或预防性成分。 这些制剂适用于口服、 胃肠外 (包括皮下例如注射或药库片; 真皮内; 鞘内; 肌内例如药库; 静脉内等)、 直肠和局 部 (如舌下) 给药, 但最适合的给药途径应取决于患者的病症。 该制剂可以是单位制剂, 并且 可以通过用药学领域熟知的任一种方法制备。 所有方法包括使本发明的丹酚酸 L与载体结合的 步骤, 该载体构成一种或多种辅助成分。 一般来说, 该制剂的制备过程如下: 使本发明的丹酚 酸 L与液体载体、 或微细粉碎的固体载体、 或二者的结合均匀而紧密的结合, 然后, 如果必要 的话, 使产物成型为所必须的制剂。
通常可使用标准的制药技术, 即可将本发明的丹酚酸 L和药用载体制得本发明药物组合 物, 这些方法包括混合、 制粒和压制。 本领域技术人员所熟知的是, 可药用载体或稀释剂的形 式和特性取决于与其混合的活性成分的量、 给药途径和其他已知因素。 在此, 所用的药用载体 是可与组合物联用给药的各种有机或无机载体, 例如: 用于固体制剂的赋形剂、 润滑剂、 粘合 剂、 崩解剂和包衣剂; 也可使用药用添加剂, 例如着色剂和甜味剂。 所述药用载体选自: 甘露 醇、 山梨醇等糖醇、 焦亚硫酸钠、 亚硫酸氢钠、 硫代硫酸钠、 盐酸半胱氨酸、 巯基乙酸、 蛋氨 酸、 维生素 C、 EDTA二钠、 EDTA钙钠、 一价碱金属的碳酸盐、 醋酸盐、 磷酸盐或其水溶 液、 盐酸、 醋酸、 硫酸、 磷酸、 氨基酸、 氯化钠、 氯化钾、 乳酸钠、 木糖醇、 麦芽糖、 葡萄 糖、 果糖、 右旋糖苷、 甘氨酸、 淀粉、 蔗糖、 乳糖、 甘露糖醇、 硅衍生物、 纤维素及其衍生 物、 藻酸盐、 明胶、 聚乙烯吡咯烷酮、 甘油、 吐温 80、 琼脂、 碳酸钙、 碳酸氢钙、 表面活性 剂、 聚乙二醇、 环糊精、 β-环糊精、 磷脂类材料、 高岭土、 滑石粉、 硬脂酸钙、 硬脂酸镁等。
其药物制剂形式可以是任何可药用的剂型, 这些剂型包括: 片剂, 例如糖衣片剂、 薄膜衣 片剂、 肠溶衣片剂; 胶囊剂, 例如硬胶囊剂、 软胶囊剂; 口服液; 口含剂; 颗粒剂; 冲剂; 丸 剂; 散剂: 膏剂; 丹剂; 混悬剂; 粉剂; 溶液剂; 注射剂; 栓剂; 膏剂, 例如软膏剂、 硬膏 剂; 霜剂; 喷雾剂; 滴剂以及贴剂。 本发明的制剂优选: 口服剂型, 如胶囊剂、 片剂、 口服 液、 颗粒剂、 丸剂、 散剂、 丹剂、 膏剂等; 以及注射剂, 如粉针剂、 注射液、 输液等。 本发明 的制剂最优选为片剂。
其口服给药的制剂可含有常用的赋形剂、 粘合剂、 填充剂、 稀释剂、 压片剂、 润滑剂、 崩 解剂、 着色剂、 调味剂和湿润剂, 必要吋可对片剂进行包衣。 优选的示例赋形剂包括: 乳糖、 D-甘露醇、 D-山梨醇、 淀粉如 a-淀粉、 糊精、 结晶纤维 素、 低取代的羟丙基纤维素、 羧甲基纤维素钠、 阿拉伯胶、 支链淀粉、 轻质无水硅酸、 合成硅 酸铝、 硅酸铝镁等。
优选的示例润滑剂包括: 硬脂酸镁、 硬脂酸钙、 滑石粉、 硅胶等。
优选的示例粘合剂包括: (X-淀粉、 蔗糖、 明胶、 阿拉伯胶、 甲基纤维素、 羧甲基纤维素、 羧甲基纤维素钠、 结晶纤维素、 糖、 D-甘露醇、 海藻糖、 糊精、 支链淀粉、 羟丙基纤维素、 羟 丙基甲基纤维素、 吡咯烷酮等。
优选的示例崩解剂包括: 乳糖、 糖、 淀粉、 羧甲基纤维素、 羧甲基纤维素钙、 氨烷基钠、 羧甲基淀粉钠、 轻质无水硅酸、 低取代的羟丙基纤维素等。
优选的示例包衣剂包括: 羟丙基甲基纤维素、 羟丙基纤维素、 乙基纤维素、 羧甲基纤维 素、 聚乙烯醇等。
优选的示例着色剂包括: 水溶性食用枸橼黄染料 (食用染料例如食用红 No.2和 No.3, 食 用黄 No.4和 No.5 , 食用蓝 No. l和 No.2 ); 水不溶性色沉染料 (例如上述水溶性食用枸橼黄染 料的铝盐); 天然染料 (例如 胡萝卜素、 叶绿素、 铁丹) 等。
优选的示例甜味剂包括: 糖精钠、 甘草次酸、 阿斯帕坦、 甜菊等。
片剂的制备方法一般为, 本发明的丹酚酸 L与一种或多种药学上可接受的辅料一起压制或 模制。
本发明的丹酚酸 L还可以制成口服液体制剂, 例如水性或油性悬液、 溶液、 乳剂、 糖浆剂 等。 本发明的丹酚酸 L还可以是干燥产品, 使用前用水或其他适合的载体混合。 这类液体制剂 可以含有常规的添加剂, 可以包括悬浮剂, 例如山梨醇糖浆、 甲基纤维素、 葡萄糖 /糖浆、 明 胶、 羟乙基纤维素、 羧甲基纤维素、 硬脂酸铝凝胶或氢化食用脂肪; 乳化剂, 例如卵磷脂、 脱 水山梨糖醇单油酸酯或阿拉伯胶; 非水性载体 (可以包括食用油), 如杏仁油、 分馏椰子油、 油性酯、 丙二醇或乙醇; 以及防腐剂, 如对羟基苯甲酸甲酯或丙酯、 山梨酸。
用于胃肠道外给药的制剂包括水性与非水性无菌注射液, 其中可以含有抗氧化剂、 缓冲 剂、 制菌剂、 等渗剂等; 以及水性与非水性无菌混悬液, 其中可以包括悬浮剂和增稠剂。 制剂 可以存放在单剂量或多计量容器内, 例如密封的安瓿和小瓶, 并且可以贮存在冷冻干燥 (冻 干) 条件下, 仅需要在临吋用前加入无菌的液体载体, 例如注射用水。
用于直肠给药的制剂可以是栓剂, 含有常规的栓剂基质, 例如可可脂、 硬脂肪酸或其他甘 油酯, 或乙二醇。
用于口腔局部、 例如颊部或舌下给药的制剂包括锭剂, 其中在加味的基质中包含活性成 分, 该基质例如蔗糖和阿拉伯胶; 还包括软锭剂, 其中在基质中含有活性成分, 该基质可以是 明胶和甘油、 或蔗糖和阿拉伯胶。
本发明的丹酚酸 L还可以配制成药库制剂。 这类长效制剂可以通过植入 (如皮下或肌内) 或肌内注射给药。 所以, 本发明丹酚酸 L可以与适合的聚合物或疏水性材料 (例如在可接受的 油中的乳剂) 或离子交换树脂进行配制, 或者配制成微溶性衍生物, 例如微溶性盐。 根据本领域的普通技术知识和现有技术, 本发明所涉及的治疗包括预防和既定疾病或症状 的治疗。 而且, 用于治疗所需的本发明丹酚酸 L 的量应根据所治疗病症的性质和患者条件而 异, 或遵医嘱。 一般来说, 用于成人治疗的剂量通常将在 0.02-5000mg/天的范围, 优选 1- 1500mg/天。 所需剂量可以是单一的剂量或多次的剂量, 按适当的间隔给药, 例如每天给予两 次、 三次、 四次或更多。 根据本发明的制剂可以含有 0.1-99wt%的活性成分, 对片剂和胶囊剂 优选含有 30-95wt%的活性成分, 液体制剂优选含有 3-50wt%的活性成分。
本发明是通过如下方案实现的:
(1) 提取: 将丹参药材或者丹参与其他药材的混合物进行水提, 醇沉, 上清液浓缩为浸 膏。
(2) 分离: 将步骤 (1) 中所得浸膏经水溶解后, 过大孔吸附树脂, 用水进行洗脱, 将洗 脱液调至酸性后再次过大孔吸附树脂, 用酸性水溶液冲洗除去杂质, 然后用乙醇洗脱, 乙醇洗 脱液经浓缩得浸膏。
(3) 纯化: 将步骤 (2) 中所得浸膏过硅胶柱, 干法上样, 洗脱液为氯仿-甲醇-甲酸, 等 度洗脱, 收集洗脱液; 用薄层层析法监测洗脱过程, 合并同类洗脱液, 得到所述丹酚酸1^。
所述步骤 (1) 中, 所述丹参药材或者丹参与其他药材的混合物, 可以切成饮片、 粉碎成 颗粒或粉末, 优选制成饮片; 所述丹参药材优选丹参的根部; 所述的其他药材可以是本领域技 术人员所公知的可与丹参配伍的中药材, 优选三七、 黄芪和 /或首乌。
所述步骤 (1) 中, 所述水提步骤为加入 4-8倍药材量体积的水, 优选 4倍量; 煎煮 1.5- 3.5h, 优选 2h; 滤过; 药渣继续用 3-6倍量水煎煮 l-3h, 优选 3倍量水煎煮 lh; 滤过, 合并滤 液, 浓缩至相对密度为 1.11-1.28 (80°C) 的浸膏, 优选相对密度为 1.2 (80°C) 的浸膏。 为使 酚酸类成盐更易于溶出, 所述的水提步骤优选使用碱的水溶液进行, 所述的碱优选于由碳酸氢 钠、 碳酸钠、 氢氧化钠、 碳酸氢钾、 碳酸钾和氢氧化钾组成的组中的至少一种, 进一步优选碳 酸氢钠或氢氧化钠; 碱的水溶液为 0.30%-0.68%的碳酸氢钠或 0.0025%。-0.004%。氢氧化钠, 优 选为 0.45%的碳酸氢钠。
所述步骤 (1) 中, 所述醇沉步骤为浸膏中加入 95%乙醇进行醇沉至 65%-70% (25°C), 优选 70%, 静置 12-36 小时, 优选静置 24h; 减压回收乙醇, 浓缩至相对密度为 1.30-1.38 (60°C) 的浸膏, 优选相对密度为 1.37 (60°C) 的浸膏。
为了更好地去除脂溶性的杂质, 优选在水提之前进行醇提, 醇提步骤为加入 5-8倍药材量 体积的 50%-95%乙醇, 煎煮 2次, 每次 l-2h, 滤过, 醇提液弃去, 药渣继续按以上所述水提 步骤提取。
所述步骤 (2) 中, 所述大孔吸附树脂柱可以是非极性活弱极性的树脂, 例如, AB-8 型、 HPD450、 HPD700、 D101、 D4020或 X5型大孔吸附树脂, 优选 AB-8型; 原药材与大孔吸附 树脂重量比为 5:1-1:1, 优选为 4:1; 用 8-15倍量柱床体积的水冲洗, 优选用 12倍量柱床体积 的水冲洗。
水洗脱液用盐酸调节至 pH值 2.2-3.5, 优选 3.0。 将上述酸性的水洗脱液再次过大孔吸附树脂, 原药材与大孔吸附树脂重量比为 5:1-1:1, 优 选 4:1; 用 pH值 2.2-3.5、 优选 3.0的盐酸冲洗至近无色。
用 3-8倍量的 50%-95%乙醇洗脱, 优选 4倍量的 95%乙醇: 洗脱液浓缩至无醇味, 得浸 膏。
所述步骤 (3) 中, 将步骤 (2) 中浓缩得到浸膏以有机溶剂溶解, 优选以甲醇溶解; 加入 层析硅胶拌样, 优选加入与浸膏等重量的 200-300 目的层析硅胶; 将拌好的样品铺在装好的硅 胶柱上, 硅胶优选 200-300 目; 用氯仿 -甲醇 -甲酸 (90:10:3-40:10:0.5) 洗脱, 优选氯仿-甲醇- 甲酸 (85:15:3), 所述洗脱过程可以是等度洗脱 (即洗脱液配比不变), 也可以是梯度洗脱 (即 洗脱液配比变化), 所述的梯度洗脱可以根据本领域的技术常识, 根据需要收集的物质的极性 进行调整, 例如洗脱液极性由小逐渐变大; 为了准确地跟踪洗脱进程, 优选以氯仿 -甲醇 -甲酸 (50:10:2) 为展开剂用薄层层析法监测。
将同类的洗脱液合并, 即得到丹酚酸 L。
为了获得更好的分离效果, 还可以采用制备液相色谱进行分离。 例如在 Waters Delta prep 4000 半制备液相色谱仪, 色谱柱: Agilent ZORBAX XDB-C 18 (21.2x150mm, 5μηι); 流动 相: 乙腈 -0.1%的甲酸水溶液 (15:85); 流速: 20ml/min; 检测波长: 280nm条件下分离制备得 到单体。
药效试验结果表明: 丹酚酸 L的自由基清除力明显大于维生素 C的自由基清除力 (表 3和 图 9); 并且, 丹酚酸 L的还原力明显强于维生素 C (图 10)。 本发明的丹酚酸 L还具有抗氧化 活性和清除自由基的活性。 因此, 本发明的丹酚酸 L还可用于制备具有清除自由基活性或具有 预防性抗氧化功能活性的药物。
本发明还涉及丹酚酸 L在制备治疗心血管疾病的药物中的应用。 所述的心血管疾病至少包 括选自下列组中的一种: 由缺氧引起的血管舒张功能障碍; 缺氧、 缺糖和过氧化状态引起的体 外神经细胞损伤和急性心肌缺血。
本发明的药效实验结果显示: 丹酚酸 L冻干粉可以导致去甲肾上腺素的血管收缩曲线出现 一定的右移, 但是没有显著性差异。 丹酚酸 L冻干粉对缺氧的血管环在三个 ACH梯度 (10- 5、 10- 4、 10-3mol/L) 的血管舒张都显著增强 (P<0.05), 说明丹酚酸 L对于缺氧引起的血管舒张功 能障碍有显著的改善作用 (表 7-8以及图 11-12)。
本发明的丹酚酸 L在心血管系统方面具有广泛的药理作用, 可减轻缺血缺氧所致血管内皮 损伤、 促进血管内皮增生、 且能改善缺血缺氧所致的心肌细胞损伤、 抗动脉粥样硬化、 抑制血 小板聚集和抗血栓形成作用。 丹酚酸 L还具有扩张冠脉, 增加冠脉流量; 和对脑缺血损伤的保 护作用。
本发明的药效试验结果显示: 本发明的丹酚酸 L对于缺氧缺糖和双氧水损伤引起的体外神 经细胞损伤有显著改善作用, 可以提高细胞存活率, 具有保护缺氧、 缺糖及过氧化状态下神经 细胞的功能 (表 12-15)。 本发明的药效试验结果还表明, 本发明的丹酚酸 L具有抗急性心肌缺 血作用 (表 16-17)。 附图说明
图 1丹酚酸 L的高分辨质谱图。
图 2丹酚酸 L的电喷雾质谱图。
图 3丹酚酸 L的 ^H-NMR图, 500MHZ, CD3OD。
图 4丹酚酸 L的 13C-NMR图, 125MHZ, CD3OD。
图 5丹酚酸 L的 DEPT谱, 125MHZ, CD3OD。
图 6丹酚酸 L的 gCOSY谱, 500MHZ, CD3OD。
图 7丹酚酸 L的 gHMBC谱, 500MHZ, CD3OD。
图 8丹酚酸 L的 gHMQC谱, 500MHZ, CD3OD。
图 9受试物对自由基清除力的比较。
图 10丹酚酸 L和维生素 C的还原力比较。
图 11丹酚酸 L冻干粉对于血管收缩的影响。
图 12丹酚酸 L冻干粉对于血管舒张的影响。
图 13 给予垂体后叶素后的心电图 (ECG)。 其中, (A) 模型对照组的正常心电图; (B ) 为模型对照组给予垂体后叶素后 15秒的心电图; (C ) 为模型对照组给予垂体后叶素后 30秒的 心电图。
具体实施方式
下面通过具体的实验数据进一步说明本发明丹酚酸 L的抗氧化、 清除自由基的有益效果。 除非另有说明, 本发明中所述的%以及%。均为重量百分比。
实施例 1丹酚酸 L的制备
取丹参饮片, 置提取器中, 加入 4倍药材量体积的水 (含 0.45%的碳酸氢钠), 煎煮 2h, 滤过: 药渣继续用 3 倍量水煎煮 lh, 滤过, 合并滤液, 浓缩至相对密度为 1.2 ( 80°C ) 的浸 膏; 浸膏中加入 95%乙醇进行醇沉至 70% ( 25 °C ), 静置 12h以上, 减压回收乙醇, 浓缩至相 对密度为 1.37 ( 60°C ) 的浸膏。
将得到的浸膏用水溶解, 过 AB-8大孔吸附树脂, 用 12倍量柱床体积的水冲洗, 水洗脱液 用盐酸调节至 pH值 3.0。 将上述酸性的水洗脱液再次过 AB-8大孔吸附树脂, 用 pH值 3.0的 酸性水溶液冲洗至近无色后, 用 4倍量的 95%乙醇洗脱, 洗脱液浓缩至浓浸膏, 洗脱液浓缩至 无醇味, 得浸膏。
将得到的浸膏用甲醇溶解, 加入相当重量的 200-300 目的层析硅胶拌样, 将拌好的样品铺 在装好的硅胶柱上, 用氯仿 -甲醇 -甲酸 (85 : 15: 3 ) 洗脱, 用薄层层析法检测, 将同类的洗脱 液合并, 即得丹酚酸 L。
高分辨质谱 (QFT-ESI ) 给出准分子离子峰 [M-H]+ m/z = 537.1034。 表 1丹酚酸 L的 (500M, CD3OD) 和 13C-NMR (125M, CD3OD) 数据归属
Figure imgf000011_0001
DEPT谱显示分子中存在 lxCH2、 12xCH、 14><C。
实施例 2丹酚酸 L的制各
取丹参和三七饮片, 置提取器中, 加入 6倍药材量体积的水 〔含 0.45%的碳酸氢钠), 煎煮 3h, 滤过; 药渣继续用 5倍量水煎煮 2h, 滤过, 合并滤液, 浓縮至相对密度为 1.25 (80°C) 的 浸膏; 浸膏中加入 95%乙醇进行醇沉至 68% (25 "C), 静置 12h以上, 减压回收乙醇, 浓缩至 相对密度为 1.32 (60°C) 的浸膏。
将得到的浸膏用水溶解, 过 AB-8大孔吸附树脂, 用 12倍量柱床体积的水冲洗, 水洗脱液 用盐酸调节至 pH值 2.5。 将上述酸性的水洗脱液再次过 AB-8大孔吸附树脂, 用 pH值 3.0的 酸性水溶液冲洗至近无色后, 用 5倍量的 95%乙醇洗脱, 洗脱液浓缩至浓浸膏, 洗脱液浓缩至 无醇味, 得浸膏。
将得到的浸膏用甲醇溶解, 加入相当重量的 200-300 目的层析硅胶拌样, 将拌好的样品铺 在装好的硅胶柱上, 用氯仿 -甲醇 -甲酸 (85: 15: 3) 洗脱, 用薄层层析法检测, 将同类的洗脱 液合并, 即得丹酚酸 L。 高分辨质谱 (QFT-ESI ) 给出准分子离子峰 [M-H] + m/z = 537.1027。
Figure imgf000012_0001
DEPT谱显示分子中存在 l xCH2、 12xCH、 14xC。
实施例 3丹酚酸 L的制备
取丹参饮片, 置提取器中, 加入 6倍药材量体积的 85 %乙醇, 煎煮 2次, 每次 2h, 滤 过, 醇提液弃去。
药渣加入 4倍药材量体积的水 (含 0.45%的碳酸氢钠), 煎煮 2h, 滤过; 药渣继续用 3倍 量水煎煮 lh, 滤过, 合并滤液, 浓缩至相对密度为 1.2 ( 80°C ) 的浸膏; 浸膏中加入 95%乙醇 进行醇沉至 70% ( 25 °C ), 静置 12h以上, 减压回收乙醇, 浓缩至相对密度为 1.37 ( 60°C ) 的 浸膏。
将得到的浸膏用水溶解, 过 AB-8大孔吸附树脂, 用 12倍量柱床体积的水冲洗, 水洗脱液 用盐酸调节至 pH值 3.0。 将上述酸性的水洗脱液再次过 AB-8大孔吸附树脂, 用 pH值 3.0的 酸性水溶液冲洗至近无色后, 用 4倍量的 95%乙醇洗脱, 洗脱液浓缩至浓浸膏, 洗脱液浓缩至 无醇味, 得浸膏。 将得到的浸膏用甲醇溶解, 加入相当重量的 200-300 目的层析硅胶拌样, 将拌好的样品铺 在装好的硅胶柱上, 用氯仿 -甲醇 -甲酸 (85 : 15: 3 ) 洗脱, 用薄层层析法检测, 将同类的洗脱 液合并, 即得丹酚酸 L。
实施例 4丹酚酸 L片剂的制备
处方:
丹酚酸 L 100g
微晶纤维素 50g
乳 糖 50g
淀 粉 51g
羧甲基淀粉钠 12g
5%PVP无水乙醇 适量
硬脂酸镁 3g 制成 1000片
工艺:
1 . 制粒
丹酚酸 L及处方中其它辅料分别过 100目筛, 称取处方量丹酚酸 L与微晶纤维素、 淀粉及 羧甲基淀粉钠采用等量递加法混合均匀, 用适量 5%PVP无水乙醇溶液制软材, 14 目筛制粒, 50-60°C干燥 lh, 加入处方量的硬脂酸镁用 14目筛整粒。
2. 压片
取上述颗粒用特制菱形异型冲模压片。
实施例 5丹酚酸 L胶囊剂的制备
处方:
丹酚酸 L 100g
淀 粉 200g
羧甲基淀粉钠 12g
5%PVP无水乙醇 适量
硬脂酸镁 3g
制成 1000粒
工艺:
1 . 制粒
丹酚酸 L及处方中其它辅料分别过 100目筛, 称取处方量丹酚酸 L与淀粉及羧甲基淀粉钠 采用等量递加法混合均匀, 用适量 5%PVP无水乙醇溶液制软材, 14 目筛制粒, 50-60°C干燥 lh, 加入处方量的硬脂酸镁用 14目筛整粒。
2. 灌装 取上述颗粒装入胶囊。
实施例 6丹酚酸 L注射液的制备
处方:
丹酚酸 L 100g
甘露醇 100g
注射用水 加至 2500ml 制成 1000支
工艺:
取丹酚酸 L, 加注射用水 1000ml适量使溶解, 搅匀; 另取甘露醇, 加注射用水 500ml使 溶解, 加入上述溶液中, 搅匀, 0.5克活性炭保温搅拌 20min, 过滤, 滤液调节 pH值为 4.5- 5.0, 加注射用水至 2500ml, 除菌过滤, 分装, 即得。
实施例 7丹酚酸 L冻干粉针的制备
处方:
丹酚酸 L 100g
甘露醇 100g
注射用水 2000ml
制成 1000支
工艺:
称取丹酚酸 L及处方中辅料甘露醇, 加注射用水 1500ml, 搅拌溶解, 0.5克活性碳搅拌脱 色 20min, 0.45微米微孔滤膜脱碳, 补水到 2000毫升, 除菌过滤、 分装、 冷冻干燥, 即得。 药效例
药效例 1丹酚酸 L的自由基俘获反应
自由基是一类具有高度活性的物质, 可以在细胞代谢过程中连续不断地产生, 它可直接或 间接地发挥强氧化作用, 广泛地参与机体的生理与病理过程。 机体自由基过量吋, 能通过氧化 作用攻击体内的生命大分子, 如核酸、 蛋白质、 糖类和脂质等, 使这些物质发生过氧化变性、 交联和断裂, 从而引起细胞结构和功能的破坏, 导致机体的组织破坏和退行性变化。 大量研究 表明: 自由基参与许多疾病的病理过程, 从而诱发如心血管疾病、 某些癌症、 老年白内障和黄 斑变性、 某些炎症及多种神经元疾病。
从化学结构上分析, 丹酚酸类化合物是酚羟基的供体, 具有抗氧化活性的结构基础。 本发 明采用 1 , 1 -二苯基 -2-苦肼基 (l ,l -diphenyl-2-picryl-hydrazyl, DPPH)自由基清除反应模型观察丹 酚酸 L对自由基的清除效力。
1、 试剂和仪器
丹酚酸 L, 纯度 95%以上, 由天津天士力集团研究院提供, 按照实施例 1的方法制备。 维生素 C和 DPPH均购于 SIGMA公司。
紫外分光光度计 UV-1800购于北京瑞利分析仪器公司
2、 实验方法
反应总体积为 2ml, 取 1ml不同浓度样品 80%甲醇溶液加入 Ι ΟΟμΜ DPPH甲醇溶液中, 混匀后在暗处 25 下反应 20min, 测定反应液在 517nm处的吸光度。 实验中采用维生素 C作 为阳性比较。 自由基清除率采用下述公式计算:
自由基清除率^^^-入 / 。^) / A 。
其中, Asample为受试样品的吸光度值, A。。ntral为无受试样品的吸光度值。
3、 实验结果
表 3和图 9显示不同浓度丹酚酸 L和维生素 C对 DPPH自由基的清除率。 丹酚酸 L的自由 基清除力明显大于维生素 C的自由基清除力。
Figure imgf000015_0001
药效例 2丹酚酸 L的还原力测定
药物还原力的大小在一定程度上反映了其预防性抗氧化功能的强弱。 本发明对丹酚酸 L的 还原力进行实验研究。
1、 试剂和仪器
丹酚酸 L, 纯度 95%以上, 由天津天士力集团研究院提供, 按照实施例 1的方法制备。 铁氰化钾, 分析纯, 购于天津市化学试剂一厂。
三氯乙酸, 分析纯, 购于国药集团化学试剂有限公司。
三氯化铁, 分析纯, 购于天津市风船化学试剂科技有限公司。
维生素 C购于 Sigma公司。
紫外分光光度计 UV-1800购于北京瑞利分析仪器公司。
冷冻离心机: Z323K, 购于德国 HEMMLE。
2、 实验方法
吸取 0.5mL含有不同浓度丹酚酸 L的 200mM pH 6.8磷酸缓冲液, 1.0%铁氰化钾溶液, 50 水浴 20 min后冰浴冷却, 加入 0.5 ml 10%三氯乙酸溶液, 于 l OOOg/min离心 10min, 取上 清液 1.0 mL, 力 1.0 mL蒸馏水和 0.2 ml 0.1 % FeCl3溶液, 静止 l Omin于 700nm处测定吸光 度, 同时进行空白实验。 维生素 C是一种强还原性物质, 在本研究中作为阳性对照。 样品还原 力等于样品吸光值减去空白对照组的吸光值, 则吸光度越大则还原力越强。
3、 实验结果
图 10显示两者都随浓度的增大吸光度逐渐增加。 丹酚酸 L的还原力明显强于维生素 C。 以下药效例 3-5所用浸膏 1和浸膏 2的制备及组分测定
所用材料均来自于天津天士力集团研究院中药所。 浸膏 1 的含量为: 6.825g生药 /g; 浸膏 2的含量为: 4.162g生药 /g。
工艺
浸膏 1 的制备工艺: 丹参、 三七 (89.8wt%的丹参, 9.6wt%的三七) 药材加 0.45%的碳酸 氢钠, 5倍量提取 2h, 4倍量提取 lh, 共水提两次。 用 95%乙醇进行回流浓缩, 醇沉至乙醇浓 度为 70%。 静置过夜, 取上清液, 浓缩即得。
浸膏 2 的制备工艺: 丹参、 三七 (89.8wt%的丹参, 9.6wt%的三七) 药材加水, 5倍量提 取 2h, 4 倍量提取 lh, 共进行两次水提。 用 95%乙醇进行回流浓缩, 醇沉至乙醇浓度为 70%。 静置过夜, 取上清液, 浓缩即得。
丹酚酸 L: 本发明实施例 1的方法。
检测方法
Waters 2695 液相色谱仪: Agilent Zorbax SB-C18 ( 4.6mmx250mm, 5μιη ) 色谱柱, 以 0.02%的磷酸水溶液为流动相 Α; 以 0.02%磷酸的 80%乙腈溶液为流动相 Β , 按下表进行梯度 洗脱; 流速为 1 ml/mii a; 检测波长为 280nm; 柱温 30°C; 记录吋间为 50min。
表 4色谱流动相线性洗脱梯度表
时间 (min) 流动相 A 流动相 B
0 90 10
8 78 22
15 74 26
35 61 39
40 90 10
50 90 10
浸膏 1和浸膏 2中各组分的含量如下表:
表 5浸膏 1中各组分含量
成分 含量 (%) 备注
原儿茶醛 0.33 峰最高
丹参素 0.30
丹酚酸 A 0.17
丹酚酸 B 0.30-0.76
丹酚酸 L 0.43-0.49
表 6浸膏 2中各组分含量
成分 含量 (%) 备注
原儿茶醛 0.14
丹参素 0.10
丹酚酸 A 0.12
丹酚酸 B 3.5
丹酚酸 L 0 药效例 3丹酚酸 L冻干粉对大鼠离体胸主动脉的作用研究
实验材料
1、 受试物及试剂: 丹酚酸 L冻干粉, 来源于天津天士力集团研究院中药所; 枸橼酸去甲 肾上腺素 (NA) ; 乙酰胆碱 (ACH ) : sigma公司, 批号: 1377511 44908131; K 氏液配制原 料: 氯化钾、 氯化钠、 磷酸二氢钾、 碳酸氢钠、 硫酸镁、 葡萄糖、 氯化钙。
2、 主要仪器: MedLab离体组织浴槽以及 Medlab-U/8C采集系统: 南京美易科技公司; 张 力换能器; 数控超级恒温槽 SC-15 ; 分析天平; 纯水仪; 氧气瓶。
3、 实验动物: SD大鼠, 体重适宜, 雌雄兼用, 由北京维通利华实验动物技术有限公司提 供, 合格证: SCXK (京) 2007-0001。 饲养在动物词养室中, 室温 20-25 °C, 照明时间 12h, 食用鼠专用饲料 (北京科澳协力饲料有限公司生产), 饮用自来水。
实验方法
1 . 给药剂量设计:
丹酚酸 L冻干粉的剂量根据其他丹酚酸的药效实验, 本实验的剂量设计为 O. lmg/mL K 氏液(mol/L) : NaCl ( 120 )、 NaHC03 ( 25 )、 KH2P04 ( 1.2 )、 MgS04 ( 1.2 )、 KC1 (4.5 )、 CaCl2 ( 1.25 )、 C6H1206 (葡萄糖 11.1 )
KC1: 3mol/L的 KC1溶液每次加入 Ι ΟΟμΙ (终浓度 60mmol/L )
NA: 10-4mol/L (终浓度为 10—6mol/L), 稀释, 共四个梯度
ACH: 10 3mol/L (终浓度 10- 5mol/L), 稀释, 共四个梯度
2. 分组:
大鼠自由饮食, 根据当日的药物配制, 随机加入某组。 保证每组八只动物, 每只动物有四 根血管环的数据。 分为正常组、 缺氧模型组、 丹酚酸 L缺氧组进行考察。
3. 实验方法
SD大鼠自由饮食, 根据当日的药物配制, 随机加入某组, 每组 8只。 动物脱颈椎处死, 快速打开胸腔, 取出胸主动脉, 在 0°C通氧 K 氏液中, 剔除结缔组织, 将胸主动脉修饰成 2mm左右的血管环。 将血管环小心挂到离体浴皿中, 恒温 37°C, 通氧, 连接张力换能器和多 导生理记录仪。 张力基础为 2g, 血管环平衡 45min , 每隔 15min更换一次 K氏液。 血管稳 定后, 加入氯化钾溶液进行预处理, 20min后洗脱, 平衡 15min, 再次加入氯化钾进行预处 理。 使血管收缩达到生理最大值。 然后按照梯度加入去甲肾上腺素 (10—7、 10_6、 10 \ 10" 4mol/L ) 观察血管的收缩情况。 达到最大收缩值后, 稳定在平台值, 再按照梯度加入乙酰胆碱 ( 10'\ 10·4、 10- 10-2mol/L) 观察血管舒张情况。 加入 NA和 ACH的整个过程不能更换 K 氏液。
缺氧模型时, 在两次氯化钾预处理后, 取消氧气供应 20min, 同吋加入丹酚酸 L冻干粉或 者同样量的 K氏液, 进行共浴, 然后按照梯度加入去甲肾上腺素以及乙酰胆碱。 从缺氧开始至 最后加完乙酰胆碱的最后一个浓度梯度期间不能更换 K氏液。 结果用 t检验进行数据统计分析。
实验结果
1、 对于血管收缩的影响
结果表明, 在本实验条件下, 和正常组比较, 丹酚酸 L冻干粉对于血管的收缩没有显著影 响, 但是血管张力曲线出现明显的右移。 数据见表 7。
表 7血管环收缩数据
NA(mol/L)
剂量
组别
(mg/ml) 10-7 10 6 10-5 10-4 正常组 0.13±0.22 0.53士0.49 1.02士 0.59 1.27±0.62 缺氧模型组 -0.01±0.05 0.23±0.41 1.12±0.31 1.37±0.31 丹酚酸缺氧组 0.1 -0.02士 0.06 0.30士0.33 0.84士 0.38 1.05±0.48
* : 和正常组比较有显著性差异, P<0.05 ; #: 和模型组比较有显著性差异, p<0.05。 丹酚 酸 L冻干粉对血管环收缩的影响请参见图 11。
2、 对于血管舒张的影响
结果表明, 在本实验条件下, 和正常组比较, 缺氧模型组在四个 ACH梯度的血管舒张都 显著减弱 (PO.01 ) ; 丹酚酸 L组和正常组比较没有显著性差异。 和缺氧模型组比较, 丹酚酸 L组在三个 ACH梯度的血管舒张都显著增强 (P<0.05 )。 说明丹酚酸 L组对于缺氧引起的血管 舒张功能障碍可以显著改善。 数据见表 8。
表 8血管环舒张数据
ACH (mol/L)
剂量
组别
(mg/ml) 10-5 10-4 10-3 10-2 正常组 -0.09±0.13 -0.71±0.47 -0.92±0.51 -1.09士0.49 缺氧模型组 0.06±0.07" 0.04±0.07*" -0.03±0.09*" -0.30±0.37"* 丹酚酸 L组 0.1 -0.09±0.18# -0.33±0.50 -0.47±0.60# -0.67±0.69
**: 和正常组比较有显著性差异, P<0.01 ; ***: 和正常组比较有显著性差异, P<0.001 ; #: 和模型组比较有显著性差异, p<0.05
丹酚酸 L冻干粉对血管环舒张的影响请参见图 12。
实验结论
丹酚酸 L冻干粉可以导致去甲肾上腺素的血管收缩曲线出现一定的右移, 但是没有显著性 差异。 20min缺氧可以导致模型组对乙酰胆碱引起的血管梯度舒张显著性减弱 (P<0.01 ), 出现 舒张障碍; 丹酚酸 L冻干粉对缺氧的血管环在三个 ACH梯度 (10—5、 10—4、 10-3mol/L) 的血管 舒张都显著增强 (P<0.05 )。 说明丹酚酸 L对于缺氧引起的血管舒张功能障碍有显著改善作 用。
注意事项讨论
1、 配置 K氏液时, 其他的物质加完后再加入 CaCl2和葡萄糖, 防止溶液浑浊; 不能把 K 氏液长时间室温放置, 以防止出现絮状沉淀。 K氏液要现用现配。
2、 尽量在冰浴中取心主动脉: 减少器械对血管环的损伤; 取心主动脉时应尽量靠近血管 弓的位置, 防止血管活性减弱。
3、 氧气要尽量以小气泡排出, 气泡过大会影响张力换能器, 使数据失真。
药效例 4丹酚酸 L冻干粉及浸膏对体外神经细胞的保护作用研究
实验材料
1、 主要仪器: 超净工作台 (安泰净化设备有限公司)、 恒温 C02培养箱 (德国 Heraeus ) 酶联免疫检测仪 (美国 BIO-RAD )、 平板摇床 (江苏省光明实验仪器厂)、 倒置生物显微镜 (日本 OLYMPUS )。
1、 主要试剂: DMEM高糖培养基 (GIBCO )、 DMEM无糖培养基 (GIBCO )、 胰蛋白酶 ( SIGMA), 胎牛血清 (PAA)、 MTT ( Sigma ) , DMSO ( Sigma ) , LDH检测试剂盒 (南京建 成生物工程研究所)。
3、 耗材: 96孔细胞培养板 ( CORNING )。
4、 细胞株: PC12。
实验方法
1、 MTT方法
①将 MTT加入 96孔板中, 20μ1/孔, 培养箱中反应 4h。
②弃去上清液, 加入 DMSO, 150μ1/孔, 平板摇床上振摇 10min。
③用酶联免疫检测仪在波长为 570nm处测定每孔的吸光值, 并计算细胞存活率。
细胞存活率% = (给药组 OD值 /阴性对照组 OD值; )χ 100%
2、 LDH活性测定
按南京建成生物工程研究所提供的 LDH检测试剂盒的说明书进行, 具体步骤如表 9。 表 9 LDH活性测定的具体步骤
Figure imgf000019_0001
LDH活性 ( U/L ) =(ODU-ODC)/(ODS-ODB)XCSXNX 1000
其中, ODu为待测样品吸光值; ODc为样品对照吸光值; ODB为空白管吸光值; 003为对 照液吸光值; Cs为标准浓度 (2mmol/L); N为样品测试前稀释倍数。
实验结果
1、 双氧水损伤模型的建立
(1) 取处于指数生长期状态良好的 PC12细胞, 用 PBS洗涤两次, 加入 0.25%胰蛋白酶 消化液, 37°C消化 lmin左右, 加入含血清培养基终止反应, 离心重悬后, 计数, 制成细胞密 度为 2χ104-4χ104个 /ml的悬液。
(2) 取细胞悬液接种于 96孔板上, 180μ1/孔 (η=3), 置于 37°C恒温 C02培养箱中培养
24h。
(3 ) 实验分组及处理: 实验分为 4 组, 分别为空白对照组 (PBS)、 溶剂对照组 (DMSO)、 模型组 (¾02)、 阳性对照组 (依达拉奉 (Edaravone))o
空白对照组: 只加 PBS。
溶剂对照组: 力卩 0.1%DMSO。
模型组: ¾02浓度分别为 0.25mM、 0.5mM和 lmM, 作用吋间 lh。
阳性对照组: 用依达拉奉 (2 g/ml) 作为阳性对照。 加入后, 预处理 6h, 加入 0.5mM ¾02损伤 lh, 然后换为新鲜 DMEM+10%FBS培养基, 200μ1/孔。
(4) 用 ΜΤΤ方法检测细胞活力。
表 10双氧水损伤模型的建立
Figure imgf000020_0001
*: P<0.05, 与 0.5mM H202的模型组对比; ##: P<0.01, 与溶剂对照组对比
从表 10可看出, 0.5mM的 ¾02作用 PC12细胞 lh, 细胞存活率为 40%, 抑制率达到 60%。 建立的双氧水损伤模型为: 0.5mM的 ¾02作用 PC12细胞 lh。
2、 缺氧缺糖模型的建立
(1) 取处于指数生长期状态良好的 PC12细胞, 用 PBS洗涤两次, 加入 0.25%胰蛋白酶 消化液, 37°C消化 lmin左右, 加入含血清培养基终止反应, 离心重悬后, 计数, 制成细胞密 度为 2χ104-4χ104个 /ml的悬液。
(2) 取细胞悬液接种于 96孔板上, 180μ1/孔 (η=3), 置于 37°C恒温 C02培养箱中培养
(3) 实验分组及处理: 实验分为 3 组, 分别为空白对照组 (normoxia+0.1%DMSO)、 模 型组 (OGD+0.1%DMSO, 缺氧缺糖)、 阳性对照组 (依达拉奉)。 模型组: 培养板的细胞换无糖 DMEM培养基, 置于缺氧箱中, 自 02%<2.6起计时 0.5h, 然后转移至正常培养箱。
阳性对照组: 用依达拉奉 (2μ§/πι1 ) 作为阳性对照。 药物加入后, 预处理 6h后, 换无糖 DMEM培养基, 180μ1/孔, 重新加药, 置于缺氧箱中, 自 02%<2.6起计吋 0.5h, 然后转移至正 常培养箱, 培养一段时间再进行测定
( 4 ) 用 MTT方法检测细胞活力。
表 11缺氧缺糖模型的建立
Figure imgf000021_0001
*: Ρ<0.05, 与模型组对比; ##·· Ρ<0.01 , 与空白对照组相比
从表 11可见, 缺氧缺糖损伤 PC12细胞, 细胞的存活率只有 42%, 抑制率达到 58%。 因 此, 实验的缺氧缺糖模型为: 细胞换无糖 DMEM培养基, 置于缺氧箱中, 自 02%<2.6起计时 0.5h, 转移至正常培养箱, 培养一段时间再进行测定。
3、 药物对双氧水损伤 PC12细胞存活率的影响
( 1 ) 取处于指数生长期状态良好的 PC12细胞, 用 PBS洗涤两次, 加入 0.25%胰蛋白酶 消化液, 37°C消化 lmin左右, 加入含血清培养基终止反应, 离心重悬后计数, 制成细胞密度 为 2χ 104-4χ 104个 /ml的悬液。
( 2 ) 取细胞悬液接种于 96孔板上, 180μ1/孔 (η=3 ), 置于 37°C恒温 C02培养箱中培养
( 3 ) 实验分组及处理: 实验分为 5组, 分别为空白对照组 (PBS )、 溶剂对照组 (DMSO 或乙酸乙酯)、 模型组 (¾02)、 阳性对照组 (依达拉奉)、 药物处理组。
模型组: ¾02浓度 0.5mM, 作用吋间 lh。
阳性对照组: 用依达拉奉 (2μ§/ηι1) 作为阳性对照。 加入细胞预处理 6h后, 加入 0.5mM ¾02损伤 lh, 然后换为新鲜 DMEM+10%FBS培养基。
药物处理组: 将细胞加到培养板后, 先加入不同浓度的不同受试药物, 20μ1/孔, 预处理 6h, 0.5mM H2O2损伤 lh, 然后换为新鲜 DMEM+10%FBS培养基。
( 4 ) 收集上清液, 20μ1/孔, 用于检测 LDH活性。
( 5 ) 对细胞板内的细胞进行 ΜΤΤ活力检测。 表 12药物对双氧水损伤 PC12 ¾ 5胞存活率的影响
Figure imgf000022_0001
*: P<0.05, 与 (0.5mM H202+DMSO) 组对比; **: P<0.01, 与 (0.5mM H202+DMSO) 组对比; ##: P<0.01, 与 DMSO组对比
药物的三个浓度分别用 0.1%、 0.01%和 0.001%的 DMSO配制, 比较时与相应浓度的溶剂 对照组比较。 其中, 药物处理组与模型组 ( 0.5mM H202+EtOAc ) 对比。 模型组 (H202+EtOAc) 与溶剂对照组 (EtOAc) 对比。
表 13药物对双氧水损伤 PC12细胞 LDH活性影响
Figure imgf000023_0001
*: P<0.05, 与 (0.5mM H202+DMSO) 组对比; **: P<0.01, 与 (0.5mM H202+DMSO) 组对比; ##: P<0.01, 与溶剂对照组 DMSO对比
其中, 药物处理组与模型组 (0.5mM H202+EtOAc) 对比, 模型组 (H202+EtOAc) 组与溶 剂对照组 (EtOAc) 对比。
4、 药物对缺氧缺糖 PC12细胞存活率的影响
(1) 取处于指数生长期状态良好的 PC12细胞, 用 PBS洗涤两次, 加入 0.25%胰蛋白酶 消化液, 37°C消化 lmin左右, 加入含血清培养基终止反应, 离心重悬后计数, 制成细胞密度 为 2χ104-4χ104个 /ml的悬液。
(2) 取细胞悬液接种于 96孔板上, 180μ1/孔 (η=3), 置于 37°C恒温 C02培养箱中培养
(3) 实验分组及处理: 实验分为 4组, 分别为空白对照组 (normoxia+0.1%DMSO)、 模 型组 (OGD+DMSO, 缺氧缺糖)、 阳性对照组 (依达拉奉)、 药物处理组。
模型组: 为培养板的细胞更换无糖 DMEM培养基, 置于缺氧箱中, 自 02%<2.6起计时 0.5h, 转移至正常培养箱, 过夜培养。 阳性对照组: 用依达拉奉 (2 g/ml) 作为阳性对照。 药物加入后, 预处理 6h后, 换为无 糖 DMEM培养基, 180μ1/孔, 重新加药, 置于缺氧箱中, 自 02%<2.6起计时 0.5h, 转移至正 常培养箱, 过夜培养。
药物处理组: 不同浓度的药物加入后, 预处理 6h后, 换无糖 DMEM培养基, 180μ1/孔, 重新加药, 置于缺氧箱中, 自 02%<2.6起计时 0.5h, 转移至正常培养箱, 过夜培养。
(4) 第二天收集上清, 20μ1/孔, 用于检测 LDH活性。
(5) ΜΤΤ检测细胞活力。
表 14药物对缺氧缺糖 PC12细胞存活率的影响
Figure imgf000024_0001
*: P<0.05, 与模型组 (OGD+DMSO) 对比; **: P<0.01, 与模型组 (OGD+DMSO) 对 比; ##·· P<0.01, 与空白对照组 (Normoxia+DMSO) 对比。 其中, 药物处理组与空白对照组 (OGD+EtOAc) 对比。 模型组 (OGD+EtOAc) 与空白对照组 (Normoxia+EtOAc) 对比。 (6) LDH活性
Figure imgf000025_0002
*: P<0.05, 与模型组 (OGD+DMSO) 对比; **: P<0.01, 与模型组 (OGD+DMSO) 对 比; ##: P<0.01, 与空白对照组 (Normoxia+DMSO) 对比。 其中, 药物处理组与空白对照组 (OGD+EtOAc) 对比。 模型组 (OGD+EtOAc) 与空白对照组 (Normoxia+EtOAc) 对比。
结论
本实验结果: 针对双氧水损伤 PC12细胞模型, 丹酚酸 L干粉剂量为 0.02μ§/ιη1时, 存活 率为 47% (Ρ<0.05)。 丹酚酸 L干粉剂量为 0.2 g/ml时, LDH活性为 474 (P<0.05)。 丹酚酸 L 浸膏 1 在 0.02、 0.2、
Figure imgf000025_0001
三个剂量时, LDH活性分别为 483 (P<0.01)、 416 (P<0.01)、 465 (P<0.05); 丹酚酸 L浸膏 2在 0.2、 2 g/ml两个剂量时, LDH活性分别为 407 (P<0.01)、 488 (P<0.01), 和模型组比较都有降低 LDH的作用。
针对缺氧缺糖模型中的 PC12细胞存活率, 丹酚酸 L干粉剂量为 0.02、 0.2μ§/ιη1吋, 存活 率分别为 48% (P<0.01)、 37% (P<0.05); 丹酚酸 L浸膏 1剂量为 0.2、 2 g/ml时, 存活率分 别为 40% (P<0.01)> 42% (P<0.01); 丹酚酸 L浸膏 2在 0.02、 0.2、 2 g/ml三个剂量时, 存 活率分别为 47% (P<0.01)、 47% (P<0.01)、 41% (P<0.05)。 对于 LDH的活性, 丹酚酸 L干 粉剂量为 2 g/ml吋, LDH活性为 40 (P<0.05); 丹酚酸 L浸膏 1剂量为 2 g/ml吋, LDH活性 为 31 (P<0.01); 丹酚酸 L浸膏 2剂量为 0.2 g/ml吋, LDH活性为 31 (P<0.05)。
丹酚酸 L冻干粉对于缺氧缺糖和双氧水损伤引起的体外神经细胞损伤有显著改善作用, 可 以提高细胞存活率, 具有保护缺氧、 缺糖及过氧化状态下神经细胞的功能。 药效例 5丹酚酸 L干粉及浸膏对大鼠实验性急性心肌缺血的保护作用研究
实验材料
1 . 受试物及试剂: 垂体后叶素 (Pit ) 注射液, 南京新百药业有限公司生产, 批号: 070302; 生理盐水, 天津天安药业股份有限公司生产, 规格 500ml/瓶, 批号: 200605241。
2.主要仪器: MedLab八道生理记录仪: 南京美易科技公司。
3.实验动物: SD大鼠, 体重适宜, 雌雄兼用, 由北京维通利华实验动物技术有限公司提 供, 合格证: SCXK (京) 2007-0001。 饲养在动物伺养室中, 室温 20-25 °C, 照明时间 12h, 食用鼠专用饲料 (北京科澳协力饲料有限公司生产), 饮用自来水。
实验方法
1 . 剂量设计:
浸膏 1的含量为: 6.825g生药 /g。 浸膏 2的含量为: 4.162g生药 /g。
本实验中浸膏 1和浸膏 2都分别设高、 低剂量组, 剂量分别为 1.086g生药 /kg和 0.543g生 药 /kg。 根据生药材剂量换算可得, 浸膏 1高剂量的丹酚酸 L冻干粉给药剂量为 4.67mg/kg, 低 剂量的丹酚酸 L冻干粉给药剂量为 2.33mg/kg。 浸膏 2不含丹酚酸 L。
丹酚酸 L冻干粉给药剂量: 10.0mg/kg、 5.0mg/kgo
2. 分组:
2.1动物筛选
于正式实验前分别给大鼠尾静脉注射垂体后叶素 (Ph ) (lU/kg) , 描记正常及注射后 5min 心电图, 观察 J点抬高、 T波异常的情况, 将未注射前就出现异常心电图者以及对 Ph不敏感者 剔除。
2.2动物分组
入选大鼠随机分为 7组, 分别为①模型对照组; ②丹参浸膏 1低剂量组 (A组); ③丹参浸 膏 1高剂量组 (B组); ④丹参浸膏 2低剂量组 (C组); ⑤丹参浸膏 2高剂量组 (D组); ⑥丹 酚酸 L冻干粉低剂量组 (E组); ⑦丹酚酸 L冻干粉高剂量组 (F组);
3. 实验方法
SD大鼠, 雌雄各半, 随机分组, 每组 8只。 模型对照组的大鼠每日灌胃等容积的生理盐 水, 给药组每日灌服不同样品的水悬液, 全部动物均连续给药 7天。 末次给药后 40min, 麻醉 大鼠, 连接仪器, 描记 II导联正常心电图。 按 lU/kg体重由大鼠尾静脉恒速推注垂体后叶素
(Pit), 推注时间控制在 10s左右, 描记给药后 0s、 5s、 10s、 15s、 30s, 45s及 lmin、 2min、 3min、 4min、 5min、 10min、 15min心电图变化, 比较各组注射 Pit前后以及给药组与模型对照 组的差异, 分析 J点、 T波的变化。 结果用 t检验进行数据统计分析。
实验结果
1.对于 J点的影响
结果表明, 在本实验条件下, 对于垂体后叶素造成的急性心肌缺血, 丹酚酸 L冻干粉高剂 量组 (F组) 在 15s、 30s、 45s吋, ECG的 J点升高幅度小于模型对照组, 且差异有统计学意 义 (P<0.05 )。 浸膏 1高剂量组 (B组) 在 15s吋, ECG的 J点升高幅度小于模型对照组, 且差 异有统计学意义 (p<0.05 )。 其他组和模型组比较各时间点均没有显著性降低。 数据请见表 16。 表 16不同浸膏给药组对急性心肌缺血时 ECG中 J点的影响
Figure imgf000027_0001
*: 和模型组比较有显著性差异, <0.05
2.对于 T波的影响
结果表明, 在本实验条件下, 丹酚酸 L冻干粉高剂量组 (F组) 在 15s、 30s吋, ECG的 T 波升高幅度小于模型组, 且差异有统计学意义 (p<0.05 )。 浸膏 1高剂量组 (B组) 在 15s吋, ECG的 T波升高幅度小于模型对照组, 且差异有统计学意义 (P<0.05 )。 其他各组和模型对照 组进行比较, 各时间点均没有显著性下降。 数据请见表 17。
表 17不同浸膏给药组对急性心肌缺血吋 ECG中 T波的影响
Figure imgf000027_0002
*: 和模型组比较有显著性差异, Ρ<0.05 实验结论
丹酚酸 L冻干粉高剂量组 (F组) 在 15s、 30s时, ECG的 J点和 T波升高幅度小于模型对 照组, 且差异有统计学意义 (P<0.05 )。
浸膏 1 高剂量组 (B 组) 和模型对照组比较, 15s 时 J 点和 T 波都有显著性下降 (P<0.05 ) o
其它各组, 在各时间点, 与模型对照组比较, J点和 T波都没有显著下降。
结果表明: 在本实验条件下, 丹酚酸 L冻干粉 (lOmg/kg ) 和含有丹酚酸 L的浸膏 1 (含 丹酚酸 L冻干粉 4.67mg/kg) 有抗急性心肌缺血作用。 不含丹酚酸 L的浸膏 2在本实验剂量下 没有抗急性心肌缺血作用。
注意事项讨论:
1、 J点定义: J点为 QRS波群的终了与 ST段交接处的结合点。
2、 正常大鼠静脉注射垂体后叶素后, 由于垂体后叶素可以收缩冠脉血管, 引起动物急性 心肌缺血, 大鼠心电图的 J点及 T波均有明显增高。 若给予某受试物后, 该给药组的 J点位移 有明显恢复, T波亦呈下降趋势, 逐渐趋于正常, 说明该药物有拮抗垂体后叶素收缩冠状血管 而导致的急性心肌缺血作用。 无论对 I期异常 (0-45s 内由垂体后叶素引起的异常) 还是 II期 异常 (45s-15min 内由垂体后叶素引起的异常) 都有治疗抑制作用, 即可以认为该药物有抗心 肌缺血作用。
3、 垂体后叶素应当使用同一批号, 以免药物效价差异而影响结果。 重复注射垂体后叶素 要隔 2h以上, 以免有耐受性。 最好将所挑选的动物隔天使用。

Claims

权利要求书
1. 一种具有式 ( I ) 新的丹酚酸化合物 L及其药学上可接受的盐、 其溶剂化物和可水解 的酯:
Figure imgf000029_0001
式 ( I )。
2. 权利要求 1所述丹酚酸化合物 L的制备方法, 其包括如下步骤:
(1) 提取: 将丹参药材或者丹参与其他药材的混合物进行水提, 醇沉, 上清液浓缩为浸
(2) 分离: 将步骤 (1) 中所得浸膏经水溶解后, 过大孔吸附树脂, 用水进行洗脱, 将水 洗脱液调至酸性后再次过大孔吸附树脂, 用酸性水溶液冲洗除去杂质, 然后用乙醇洗脱, 乙醇 洗脱液经浓缩得浸膏;
(3) 纯化: 将步骤 (2) 中所得浸膏过硅胶柱, 洗脱液为氯仿-甲醇-甲酸, 等度洗脱, 收 集洗脱液; 用薄层层析法监测洗脱过程, 合并同类洗脱液, 得到所述丹酚酸 。
3. 权利要求 2所述的制备方法, 其特征在于:
所述步骤 (1) 中, 将所述丹参药材或者丹参与其他药材的混合物切成饮片; 所述水提步 骤为加入 4-8倍药材量体积的水, 煎煮 1.5-3.5h, 滤过; 药渣继续用 3-6倍量水煎煮 l-3h, 滤 过; 合并滤液, 浓缩至相对密度为 1.11-1.28 (80°C) 的浸膏; 所述醇沉步骤为向上述浸膏中加 入 95%乙醇沉淀至含醇量 65%-70%, 静置 12-36h, 减压回收乙醇, 浓缩至相对密度为 1.30- 1.38 (60°C) 的浸膏;
所述步骤 (2) 中, 过大孔吸附树脂柱, 原药材与大孔吸附树脂重量比为 5:1-1:1, 用 8-15 倍量柱床体积的水冲洗; 水洗脱液用盐酸调节至 pH值 2.2-3.5; 将上述酸性水洗脱液再次过大 孔吸附树脂, 原药材与大孔吸附树脂重量比为 5:1-1:1, 用 pH值 2.2-3.5的盐酸冲洗至近无色; 用 3-8倍量的 50%-95%乙醇洗脱, 洗脱液浓缩至无醇味, 得浸膏; 所述大孔吸附树脂选自 AB- 8、 HPD450、 HPD700、 D101、 D4020和 X5型大孔吸附树脂中的一种。
所述步骤 (3) 中, 将步骤 (2) 中浓缩得到的浸膏以有机溶剂溶解, 加入层析硅胶拌样, 将拌好的样品铺在装好的硅胶柱上, 用 90:10:3-40:10:0.5的氯仿 -甲醇 -甲酸洗脱。
4. 权利要求 2所述的制备方法, 其特征在于:
所述步骤 (1 ) 中, 所述水提步骤为加入 4倍药材量体积的水, 煎煮 2h, 滤过; 药渣继续 用 3倍量水煎煮 lh, 滤过; 合并滤液, 浓缩至相对密度为 1.2的浸膏; 所述醇沉步骤为向上述 浸膏中加入 95%乙醇进行醇沉至含醇量 70%, 静置 24h, 减压回收乙醇, 浓缩至相对密度为 1.37的浸膏;
所述步骤 (2 ) 中, 过大孔吸附树脂柱, 原药材与大孔吸附树脂重量比为 4:1, 用 12倍量 柱床体积的水冲洗; 水洗脱液用盐酸调节至 pH值 3.0; 将上述酸性水洗脱液再次过大孔吸附树 脂, 原药材与大孔吸附树脂重量比为 4:1, 用 pH值 3.0的盐酸冲洗至近无色; 用 4倍量的 95% 乙醇洗脱, 洗脱液浓缩至无醇味, 得浸膏; 所述大孔吸附树脂为 AB-8型。
所述步骤 (3 ) 中, 将步骤 (2 ) 中浓缩得到的浸膏以甲醇溶解, 加入 200-300 目层析硅胶 拌样, 将拌好的样品铺在装好的 200-300目硅胶柱上, 用 50: 10:2的氯仿 -甲醇 -甲酸洗脱。
5. 权利要求 2-4任意一项所述的制备方法, 其特征在于所述步骤 (1 ) 中所述的水提步骤 使用碱的水溶液进行, 所述的碱选自于由碳酸氢钠、 碳酸钠、 氢氧化钠、 碳酸氢钾、 碳酸钾和 氢氧化钾组成的组中的至少一种。
6. 权利要求 5所述的制备方法, 其特征在于所述碱的水溶液为碳酸氢钠水溶液或氢氧化 钠水溶液。
7. 权利要求 6所述的制备方法, 其特征在于所述碱的水溶液为 0.30%-0.68%的碳酸氢钠水 溶液或 0.0025%。-0.004%。氢氧化钠水溶液。
8. 权利要求 7所述的制备方法, 其特征在于所述碱的水溶液为 0.45%的碳酸氢钠水溶液。
9. 权利要求 2-8任意一项所述的制备方法, 其特征在于所述步骤 (1 ) 中, 在水提步骤之 前还包括醇提的步骤。
10. 权利要求 9所述的制备方法, 所述醇提的步骤为加入 5-8倍药材量体积的 50 % -95 % 乙醇, 煎煮 2次, 每次 l -2h, 滤过, 醇提液弃去, 药渣继续水提。
11 . 一种药物组合物, 其特征在于含有权利要求 1 所述的丹酚酸 L和药学上可接受的载 体。
12. 权利要求 1所述的丹酚酸 L在制备治疗心血管疾病的药物中的应用。
13. 权利要求 12所述的应用, 其中, 所述的心血管疾病至少包括选自下列组中的一种: 由缺氧引起的血管舒张功能障碍; 缺氧、 缺糖和过氧化状态引起的体外神经细胞损伤和急性心 肌缺血。
14. 权利要求 1所述的丹酚酸 L在制备具有清除自由基活性的药物中的应用。
15. 权利要求 1所述的丹酚酸 L在制备具有预防性抗氧化功能活性的药物中的应用。
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AU2010230770B2 (en) 2014-07-03
EP2415749B1 (en) 2016-05-04
CA2756823C (en) 2017-01-17
EP2415749A4 (en) 2012-12-12
RU2011139614A (ru) 2013-05-10
KR20120006029A (ko) 2012-01-17
MY183588A (en) 2021-02-27
CA2756823A1 (en) 2010-10-07
AU2010230770A1 (en) 2011-10-13
SG174548A1 (en) 2011-10-28
JP2012522022A (ja) 2012-09-20

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