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79 results about "Butenolide" patented technology
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Butenolides are a class of lactones with a four-carbon heterocyclic ring structure. They are sometimes considered oxidized derivatives of furan. The simplest butenolide is 2-furanone, which is a common component of larger natural products and is sometimes referred to as simply "butenolide". A common biochemically important butenolide is ascorbic acid (vitamin C). Butenolide derivatives known as karrikins are produced by some plants on exposure to high temperatures due to brush fires. In particular, 3-methyl-2H-furo[2,3-c]pyran-2-one was found to trigger seed germination in plants whose reproduction is fire-dependent.
Phase change inks containing gelator additives
Disclosed is a phase change ink composition comprising an ink vehicle, a colorant, and a nonpolymeric organic gelator selected from the group consisting of anthracene-based compounds, steroid compounds, partially fluorinated high molecular weight alkanes, high molecular weight alkanes with exactly one hetero atom, chiral tartrate compounds, chiral butenolide-based compounds, bis-urea compounds, guanines, barbiturates, oxamide compounds, ureidopyrimidone compounds, and mixtures thereof, said organic gelator being present in the ink in an amount of no more than about 20 percent by weight of the ink, said ink having a melting point at or below which the ink is a solid, said ink having a gel point at or above which the ink is a liquid, and said ink exhibiting a gel state between the melting point and the gel point, said ink exhibiting reversible transitions between the solid state and the gel state upon heating and cooling, said ink exhibiting reversible transitions between the gel state and the liquid state upon heating and cooling, said melting point being greater than about 35° C., said gel point being greater than said melting point. Also disclosed are imaging processes employing phase change inks containing gelator additives.
Owner:MONTREAL UNIV OF
Composite fiber macromolecular reinforced concrete sound barrier and manufacturing method thereof
The invention discloses a composite fiber macromolecular reinforced concrete sound barrier and a manufacturing method thereof. Concrete raw materials comprise ceramsite, sand, gel materials, reinforcing fibers, a water reducing agent, polymer emulsion and water. The gel materials comprise cement, coal ash, silicon ash and mineral powder. The reinforcing fibers are steel fibers and / or polypropylene fibers. The polymer emulsion is acrylate copolymer emulsion or butenolide copolymer emulsion. According to the manufacturing method, the ceramsite is pre-soaked, and after the other raw materials are added in sequence and stirred, pouring, grout collecting, plastering and hardening are performed. Through the combination of lightweight aggregate, sound absorption materials, organic fibers, inorganic fibers, macromolecular reinforcing agents and other materials in the formula, the composite fiber macromolecular reinforced concrete sound barrier is light in weight, good in mechanical property, good in sound absorption and insulation effect, low in cost, good in durability and environmentally friendly.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP +1
Use of butenolide I in preparing drugs for controlling immunological liver injury
InactiveCN102218056AWide variety of sourcesEasy to manufactureOrganic active ingredientsDigestive systemButenolideInhibitory effect
The invention discloses a use of butenolide I for preparing drugs for controlling immunological liver injury. With the present invention, the butenolide I can reduce levels of TNF-alpha and NO, wherein the TNF-alpha and the NO play important roles in a pathogenic process of the immunological liver injury; the butenolide I can reduce elevated levels of the NO and the iNOS in liver homogenates of immunological liver injury mice so as to decrease the liver injury induced by the NO; the butenolide I can inhibit a overexpression of the TNF-alpha so as to decrease the direct liver injury or the indirect liver injury induced by the TNF-alpha. In addition, the use of the butenolide I as the drug for controlling the immunological liver injury has advantages of convenient preparation, extensive sources, low price and high safety, and has good development and application prospect.
Owner:SHAANXI INST FOR FOOD & DRUG CONTROL
Method for separating effective constituent butenolide II from astraolylis lancea formalyrata volatile oil
InactiveCN101265247AIncrease contentEasy to operateOrganic chemistryPlant ingredientsChromatographic separationAtractylenolide II
The invention discloses a method for separating effective component, atractylenolide II, from Rhizoma Atractylodis Macrocephalae volatile oil. The method includes pulverizing rhizome of dried Rhizoma Atractylodis Macrocephalae, extracting in medium and low polar solvents, and concentrating to obtain tan volatile oil; standing for a certain time, extracting the volatile oil with mixed solution prepared from n-hexane, ethyl acetate, ethanol and water at a certain ratio, collecting upper layer phase, and concentrating to obtain the refined volatile oil; and gradient eluting with mixed solvent of petroleum ether and ethyl acetate at a certain ratio with column chromatography, collecting correspondent fraction, concentrating, and recycling solvent to obtain atractylenolide II. The method performs pretreatment on Rhizoma Atractylodis Macrocephalae volatile oil coarse product by extracting and oxidizing before separating through column chromatography to have simple process and low cost, increased yield and purity of atractylenolide II, and avoids the disadvantages in the conventional post-treatment steps such as crystal loss caused by recrystallization, etc.
Owner:ZHEJIANG UNIV
Moisture-proof agent applied to corrugated paper
InactiveCN104452452AControl Moisture IndexNo irritating smellWater-repelling agents additionBenzenePapermaking
The invention discloses a moisture-proof agent applied to corrugated paper, relating to the technical field of papermaking. The moisture-proof agent applied to the corrugated paper is prepared from the following raw materials in parts by weight: 25-30 parts of cassava starch, 15-20 parts of allyl benzene, 13-18 parts of butenolide, 5-8 parts of paraffin, 2-5 parts of sodium dodecyl benzene sulfonate and 1-4 parts of silicon dioxide. The moisture-proof agent applied to corrugated paper can be used for well controlling the water index of the corrugated paper; the waterproof and moisture-proof properties of the corrugated paper are greatly improved. In addition, the moisture-proof agent applied to the corrugated paper has a non-toxic effect, is free of pungent odor and free of corrosion resistance and is applied to moisture-proof treatment of the corrugated paper.
Owner:柳州市柳江区联华纸制品厂
Synthesis method for spirally-epoxidized indole butenolide compound
InactiveCN103788102ASimple and fast operationMild reaction conditionsOrganic chemistryLithium chlorideSynthesis methods
The invention relates to the technical field of organic chemistry and particularly relates to a synthesis method for a spirally-epoxidized indole butenolide compound which is shown as the formula IV. The method comprises takes alkynal shown as the formula I and N-methyl isatin shown as the formula II as raw materials, and takes dioxane as a solvent in the presence of a triazole salt shown as the formula III, lithium chloride and diisopropyl ethyl amine to react for 3-72 hours under the condition of nitrogen protection and at 10-65 DEG C; a reaction solution is cooled and concentrated and a mixed solvent of a petroleum ether and acetone in the volume ratio of 25:1 is used as an eluting agent to carry out column chromatography elution; detected eluting solution parts of all products are collected and rotary evaporation is carried out so as to remove the solvent to obtain a spirally-epoxidized indole butenolide product. The synthesis method provided by the invention has good yield, and the application range of primers is wide; the synthesis method has the advantages of simplicity and convenience for operation, moderate reaction, convenience for post-treatment and the like.
Owner:CHINA PHARM UNIV
Application of class of butenolide compounds in preparation of marine biofouling prevention coating material
ActiveCN104356730AImprove lipophilicityHas anti-biofouling activityAntifouling/underwater paintsPaints with biocidesNatural resinOrganosolv
The invention discloses an application of a class of a butenolide compounds in the preparation of a marine biofouling prevention coating material. The butyrol actone V, the aspernolide A, the butyrolactone IV, the aspernolide B, the butyrolactone II, the 4-(4-Hydroxyphenyl)-5-(4-hydroxypheneylmethyl)-2-hydroxyfurane-2-one, the 5,6-dihydropenicillic acid and the 5,6-dihydro-6-hydroxy-penicillic acid, which are provided by the invention, have marine biofouling prevention activity and can be used for preparing the marine biofouling prevention coating material; if the compounds permeate or diffuse into film forming natural resin, polyethylene ethyl acetate copolymer and other polymers such as hydrolyzable, soluble or insoluble resin in an independent or combined way to prepare the marine biofouling prevention coating material, the marine biofouling prevention coating material can release sufficient effective components to a surface to achieve an antifouling function; as the compounds are natural active ingredients, are hard to dissolve in water but easy to dissolve organic solvents such as chloroform, ethyl acetate and methyl alcohol, and have favorable oleophilic properties, the components can be applied to preparing the marine antifouling agents in an independent or combined way and have a favorable application prospect.
Owner:SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
Butenolide structure-containing benzyl amino dithio formiate compounds, and preparation method and application thereof
ActiveCN102180845AGood inhibitory effectModerate inhibitory effectBiocideOrganic chemistryIntellectual propertyAspergillus niger
The invention discloses butenolide structure-containing benzyl amino dithio formiate compounds, and a preparation method and application thereof, and belongs to the field of medicinal chemistry. The structure is shown as the general formula I, wherein R1 is C1-C5 alkyl or hydrogen; R2 is C1-C5 alkyl or hydrogen; and R3 is hydrogen, methyl monosubstituted or multisubstituted at different positions, methoxy, fluorine, chlorine or hydroxyl and the like. The preparation method comprises the following steps of: adding a CS2 solution into benzylamine or substituted benzylamine and an aqueous solution of alkaline substances dropwise; stirring; adding 3-bromomethyl-gamma-butyrolactone; reacting with stirring; and performing recrystallization or column chromatography separation to prepare the butenolide structure-containing benzyl amino dithio formiate compounds. The butenolide structure-containing benzyl amino dithio formiate compounds have obvious inhibition effect on fungi such as candida albicans, grayish purple penicillium, aspergillus niger and the like, and have important significance for further researching novel antifungal medicaments and developing medicaments with proprietary intellectual property rights.
Owner:ZHENGZHOU UNIV
Petroleum ether extract of traditional Chinese medicine for preventing and treating glucose and lipid metabolic disturbance and preparation method thereof
ActiveCN102091083AImprove securityPreserve the characteristics of traditional Chinese medicineHydroxy compound active ingredientsMetabolism disorderSalvianolic acid BCITRUS MEDICA FRUIT
The invention discloses a petroleum ether extract of traditional Chinese medicine for preventing and treating glucose and lipid metabolic disturbance, comprising the following active components: isoceryl alcohol, beta-sitosterol, n-hexacosane acid, butenolide III, oleanolic acid, berberine, jateorhizine, salvianolic acid B, lignocerane, 9,12-octadecadienoic acid, 5,7-dimethoxy coumarin and ginsenoside Rb1. The preparation method comprises the following steps: after extracting crude medicines of root of red rooted salvia, glossy privet fruit, coptis, thistle, eucommia, white atractylodes rhizome, pseudo-ginseng and finger citron by C1-3 alcohols and / or water, combining all the extracts, and extracting the total extract by petroleum ether to obtain the petroleum ether extract of traditional Chinese medicine for preventing and treating glucose and lipid metabolic disturbance. A big amount of inactive components in the original compound traditional Chinese medicine are removed from the extract provided by the invention, so that much more efficient extraction parts of the traditional Chinese medicines are obtained, and the extract has a stable preparation process, controllable quality and notable curative effect, and is convenient to use and be produced into various dosage forms.
Owner:青岛百里才鑫医药科技有限公司
Compound Chinese medicine extract preventing arteriosclerosis and preparation method thereof
ActiveCN102133222AReservedHigh content of active ingredientsAnhydride/acid/halide active ingredientsCardiovascular disorderSalvianolic acid BAklanonic acid
The invention discloses a compound Chinese medicine extract preventing arteriosclerosis, comprising the following effective ingredients: dried alcohol, Beta-sitosterol, hexacosanoic acid, butenolide III, oleanolic acid, berberine, jateorhizine, coptisine, salvianic acid A, salvianolic acid B, ring-tetracosane, 9,12-octadecadienoic acid, 5,7-dimethoxy coumarin, specnuezhenide, ginsenoside Rb1 and Rg1, notoginsenoside R1, encommiol and the like. A preparation method of the extract is as follows: taking salvia miltiorrhiza, fructus ligustri lucidi, rhizoma coptidis, cirsium japonicum, eucommia bark, atractylodes macrocephala koidz, radix pseudo-ginseng and bergamot as raw materials, conducting C1-3 alcohol extraction and / or water extraction on a total extract, then extracting the total extract by organic solvents with different polarities so as to obtain all the effective ingredients, and finally mixing the effective ingredients so as to obtain the compound Chinese medicine extract preventing arteriosclerosis. As for the compound Chinese medicine extract, a large number of ineffective chemical ingredients are removed, so that the content of effective ingredients is improved greatly, the influence on product processing and preparation quality caused by the ineffective ingredients is reduced, the preparation process is stable, the product quality is controllable, and the mass production is facilitated.
Owner:QINGDAO BAILI CAIXIN MEDICAL TECH CO LTD
Synthetic method of hydroxyl butenolide and congener thereof
InactiveCN103420959ASimplified purification stepsConducive to the development of green industrialization technologyOrganic chemistryOxygenNatural fiber
The invention relates to a green synthetic method of hydroxyl butenolide and congeners thereof, and the synthetic method is especially suitable for one-step method preparation of hydroxyl butenolide from chemical raw materials like furfural and furoic acid. A routine dyeing technology is employed to load a photosensitizer on renewable natural fiber to obtain a green photosensitizer; in the presence of light, reaction raw materials react with oxygen to prepare hydroxyl butenolide through the one-step method. The method provided by the invention eliminates the problem that photosensitizer and products are difficult to separate, and that the photosensitizer can not be reused; and the method also solves the problem that although a high-molecular polymer loaded photosensitizer can be reused, the carrier raw material is non-renewable and causes environmental pollution for wasting. The method provided by the invention has the advantages of reaction under room temperature, relax temperature control and simple post-treatment steps, substantially increases product yield and is in favor of development and industrialization of green chemistry technology in hydroxyl butenolide synthesis technology.
Owner:BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
Environmentally-friendly ocean antifouling paint based on self-polishing polymer/butenolide and derivatives thereof
InactiveCN106700787AConstant releaseShort half-lifeAntifouling/underwater paintsRosin coatingsChemical structureMetabolite
The invention discloses a preparation method and application of an environmentally-friendly ocean antifouling paint based on self-polishing polymer / butenolide and derivatives thereof. Controlled release of an environmentally-friendly anti-fouling agent in the paint serves as the main line, the used polymer is self-polishing polymer which can achieve self-refreshing through side group hydrolysis-polymer ablation in the ocean environment, and the fact that the anti-fouling agent can be released continuously and constantly. The used anti-fouling agent is prepared through artificial synthesis by referring to the chemical structure of marine streptomyces metabolite, and the problem that the natural anti-fouling agent has low content in living bodies, and is complex in extraction process and low in yield is overcome. Especially, the anti-fouling agent has short half-life period in the ocean and can be degraded easily, and can be degraded into non-toxic compounds quickly after being released to seawater, and is not accumulated in the living bodies. The problems that the conventional anti-fouling agent pollutes the environment and destroys the marine ecological balance and the like are overcome. The environmentally-friendly ocean antifouling paint based on self-polishing polymer / butenolide and derivatives thereof has significant application prospects in the field of environmentally-friendly ocean antifouling paint.
Owner:THE HONG KONG UNIV OF SCI & TECH +1
5-(butane lactone-3-ethylidene)-2-amino imidazolinone compounds, preparation method and application thereof
The invention relates to 5-(butane lactone-3-ethylidene)-2-amino imidazolinone compounds, a preparation method and application thereof. The imidazolinone compounds have a structure with general formula of TB. The 5-(butane lactone-3-ethylidene)-2-amino imidazolinone compounds with the general structure of TB have good bactericidal effect on various types of phytopathogen such as rice sheath blight disease, sclerotinia rot of colza and phytoph-thora capsici leonian germs.
Owner:CHINA AGRI UNIV
Preparation of substituted butenolides via palladium-free etherification and amination of masked mucohalic acids
Methods and materials for preparing 4-substituted-2-buten-4-olides are disclosed. The methods include reacting a masked mucohalic acid with a primary or secondary amine or with an arylol in the presence of a base. Unlike existing processes, the disclosed methods do not require the use of palladium, which make them well suited for preparing intermediates in drug syntheses.
Owner:BLAZECKA PETER GARTH +1
Application of a class of butenolide compounds in the preparation of anti-marine biofouling coatings
ActiveCN104356730BHas anti-biofouling activityImprove lipophilicityAntifouling/underwater paintsPaints with biocidesNatural resinOrganosolv
Owner:SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
Gamma-crotonic lactone with substituted aryl group in its 4th place and its solid phase synthesis process
The present invention relates to a gamma-butenolide whose four positions contain aryl substituent and its solid phase synthesis method. Said invention provides the structure formula of said compound.
Owner:SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
Compound traditional Chinese medicine extract preventing glucose metabolism disturbance and preparation method thereof
ActiveCN102133221AHigh content of active ingredientsActive ingredients are clearHydroxy compound active ingredientsMetabolism disorderBiotechnologySalvianolic acid B
The invention discloses a compound traditional Chinese medicine extract preventing glucose metabolism disturbance, comprising the following effective ingredients: dried alcohol, Beta-sitosterol, hexacosanoic acid, butenolide III, oleanolic acid, berberine, jateorhizine, coptisine, salvianic acid A, salvianolic acid B, ring-tetracosane, 9,12-octadecadienoic acid, 5,7-dimethoxy coumarin, specnuezhenide, ginsenoside Rb1 and Rg1, notoginsenoside R1 and encommiol. A preparation method of the extract is as follows: extracting raw material medicines by C1-3 alcohol and / or water, combining a total extract, extracting the total extract by organic solvents with different polarities so as to obtain all effective ingredients, and finally mixing the ingredients so as to obtain a product. As for the compound traditional Chinese medicine extract, a large number of ineffective chemical ingredients in Chinese medicine are removed, so that the content of effective ingredients is increased greatly, and the influence on product processing and preparation quality caused by the ineffective ingredients is reduced; and simultaneously, the preparation process is stable, the product quality is controllable, the mass production is facilitated, and the drug effect of the compound traditional Chinese medicine is improved.
Owner:青岛百里才鑫医药科技有限公司
Method of preparing r-butenolide from alkenyl epoxide
InactiveCN106496167AHigh chemoselectivityHarm reductionOrganic chemistryMetal catalystRoom temperature
The invention discloses a method of preparing r-butenolide from alkenyl epoxide. The method includes taking the MBH type alkenyl epoxide as a raw material, and allowing a reaction between the MBH type alkenyl epoxide and nucleophile to obtain the r-butenolide at the room temperature. The method has the advantages of mild reaction condition, non-use of metal catalysts, and high efficiency and speed under room temperature.
Owner:HEFEI UNIV OF TECH
Synthetic method for 3-hydroxyl multi-substituted tetrahydropyrrole derivative
The invention relates to a synthetic method for a 3-hydroxyl multi-substituted tetrahydropyrrole derivative. The 3-hydroxyl multi-substituted tetrahydropyrrole derivative obtained by a one-step reaction by using a diazonium compound, aniline and 4-carbonyl butenolide as raw materials, aluminium oxide as an additive, a molecular sieve as a water absorbing agent, a metal Lewis acid as a catalyst and an organic solvent as a solvent and purifying by column chromatography. The synthetic method has the advantages of high atom economy, high selectivity and high yield, is mild in reaction conditions and simple and safe in operations. The 3-hydroxyl multi-substituted tetrahydropyrrole derivative with three chiral centers obtained by the method is an important chemical and medical intermediate, has wide applications in medical and chemical fields, and ahs great application prospects.
Owner:EAST CHINA NORMAL UNIV
Gamma-alkenyl substituted butenolide or butenolactam compound and asymmetric synthesis method and ligand of gamma-alkenyl substituted butenolide or butenolactam compound
ActiveCN111960909AOrganic-compounds/hydrides/coordination-complexes catalystsMetallocenesCycloadditionInsertion reaction
The invention discloses an asymmetric synthesis method of a gamma-alkenyl substituted butenolide or butenolactam compound. The method adopts cheap nickel to catalyze a [3+2] asymmetric cycloaddition reaction of a cyclopropenone compound and alpha, beta-unsaturated ketone or imine, the selective insertion reaction of intermolecular C=X after nickel-catalyzed C-C bond activation is realized for thefirst time, wherein X is equal to O or N, the gamma-alkenyl substituted butenolide or butenolactam compound is obtained in a high yield, high enantioselectivity and chirality controllable manner, thesynthesis method is novel, condition mildness, substrate with good applicability, simple and efficient reaction, cheap and readily available catalyst, according to the present invention, the synthesisprocess is simple, the atom economy is good, the synthesis product is easy to derivatize, the method can be widely used in completely-synthesized designed synthesis building blocks and new chiral drug derivatives, and the ligand compound is further provided, and can be used for the asymmetric synthesis of gamma-alkenyl substituted butenolide or butenolactam compounds.
Owner:HENAN NORMAL UNIV
Method for synthesizing beta-iodobutyl lactone
InactiveCN1709883AMild reaction conditionsShort reaction timeOrganic chemistryIodolactonizationOrganic solvent
This invention involves a synthetic method to a kind of beta-iodo-butenolide and its synthesizing method in which synthesizes-beta-Iodo-butenolide through the iodolactonization of 2, 3- joint alkene diethylene glycol dinitrate with iodine in the water-organic agents mixed solvent. At room temperature, in mixing solvent of water and organic agent, iodine takes cyclization with 2,3-allenic ester, receive beta-Iodo-butenolide. This method has advantage of mild reacting condition, short response time, high producing rate, low costs and easy industrialization.
Owner:ZHEJIANG UNIV
Preparation method of Xiaoyao powder antidepressant extract
ActiveCN102166341BImprove complianceHigh content of medicinal substancesNervous disorderPlant ingredientsSolventEthyl acetate
Owner:SHANXI UNIV
Method for separating effective ingredient lagehead atractylodes lactone III from lagehead atractylodes naphtha
The invention discloses a process for separating effective component of butenolide III from lagehead atractylodes volatile oil, which comprises leaching the disintegrated lagehead atractylodes with medium polar solvent, reclaiming the solvent to obtain chartreuse green volatile oil, dissolving the volatile oil with low carbon chain and storing at -4 to 0 deg C, removing insoluble substances, concentrating the filtrate to obtain refined volatile oil, dissolving the volatile oil with medium polar solvent, then gradually charging low polar solvent, removing precipitation, concentrating the filter liquor and degreasing with low polar solvent, finally carrying out recrystallization.
Owner:ZHEJIANG UNIV
2-butenolide acetamide compound, and preparation method and application thereof
ActiveCN110734417APromote germinationImprove stabilityBiocideOrganic chemistryChemical compoundParasitic Weeds
The invention relates to the field of pesticide chemistry, and discloses a 2-butenolide acetamide compound, and a preparation method and an application thereof. The compound has a structure represented by a formula (1). A synthesis method of a compound represented by the formula (2) comprises the steps: carrying out a first reaction on a compound represented by a formula (3) and a compound represented by a formula (4) in the presence of a first alkaline substance and a first solvent. The synthesis method of the compound represented by the formula (1) comprises the steps: carrying out a secondreaction on the compound represented by the formula (2) and a compound represented by a formula (5) in the presence of a second alkaline substance and a second solvent. The 2-butenolide acetamide compound disclosed by the invention can promote germination of root parasitic weed seeds, has relatively high stability, and can be well applied to prevention and treatment of root parasitic weeds in fields.
Owner:NANKAI UNIV
Rhizoma alismatis-largehead atractylodes rhizome tablet quality control method
InactiveCN110441407AQuality improvementGuaranteed stabilityComponent separationPhosphoric acidColumn temperature
The invention belongs to the technical field of medicine, and discloses a quality control method for detecting content of butenolide I, butenolide II and 23-acetyl alisol B in a rhizoma alismatis-largehead atractylodes rhizome tablet. The content of one or more components is determined simultaneously or separately by high performance liquid chromatography. C8 and C18 are used as fillers. Isocraticelution or gradient elution is carried out by using 0-100% acetonitrile or methanol as a mobile phase A and 100-0% ultrapure water or glacial acetic acid or a phosphoric acid solution as a mobile phase B. A flow rate is 0.1-2 ml / min, detection wavelength is 203-320 nm, and column temperature is 20-40 DEG C. The method of the invention controls the quality of active components of two medicinal materials in the prescription of the rhizoma alismatis-largehead atractylodes rhizome tablet, and so the quality control of the preparation is more comprehensive, accurate and effective, thereby helpingto ensure the medicine safety and validity. Moreover, the determination method has the advantages of simple operation, accurate result and good precision, stability and reproducibility, is an advancedquality control method and facilitates the standardized production of the medicine.
Owner:TIANJIN INSTITUTE OF PHARMA RESEARCH
Desloratadine derivative containing gamma-subunit butenolide and synthesizing method thereof
InactiveCN101735207AEasy to prepareEasy to manufactureOrganic chemistryRespiratory disorderChemical synthesisIntellectual property
The invention discloses a desloratadine derivative containing gamma-subunit butenolide and a synthesizing method thereof, and belongs to the technical field of organic chemical synthesis. The compounds by using desloratadine as a raw material medicament have the following structural general formula, namely the most synthesized compounds have good inhibiting effect on the shrinkage of histamine-induced isolated ileum smooth muscles of guinea pigs, and the synthesis of the derivative enriches the structural type of anti-histamine medicaments and widens the research fields of the anti-histamine medicaments. The synthesizing method provides a good foundation for the further development and utilization of medicinal molecules, and has important meanings for further developing novel anti-allergic medicaments and developing the medicaments with proprietary intellectual property rights.
Owner:ZHENGZHOU UNIV
Butenolide metabolite and application thereof
The invention relates to a butenolide metabolite and an application thereof, and belongs to the technical field of microbial pesticides. The production bacterial strain is Streptomyces YIM120811(Streptomycessp.YIM120811) derived from soil and is preserved in typical culture preservation center in China on 19th, September 2013; the preservation number is CCTCCNo:AA2013014. The bacterial strain YIM20811 is subjected to fermenting culture and extracting separation so that two new butenolide compounds A and B are obtained. An antibacterial activity test proves that a butenolide derivative has obvious plant pathogenic fungi activity resistance and has a potential use of preparing a new agricultural antibacterial agent.
Owner:YUNNAN UNIV
Butene lactone compound containing sulfonyl lactones as well as synthesis method and application thereof
ActiveCN103694254AEnhanced inhibitory effectHigh yieldOrganic chemistryDigestive systemMechanism of actionCombinatorial chemistry
The invention discloses a butene lactone compound containing sulfonyl lactones as well as a synthesis method and an application thereof, and belongs to the chemical field of medicines. The butene lactone compound has the following general structure formula I, wherein in the formula I, R represents hydrogen, mono-substituted or poly-substituted methoxy groups, methyl groups, fluorine, chlorine, bromine, trifluoromethyl and the like; the poly-substituted groups are same. The butene lactone compound has a good function of inhibiting HCV (Hepatitis C Virus) and cannot generate the significant cytotoxicity. Thus, the butene lactone compound can be used for preparing HCV-resisting medicines, and has the potential for developing the HCV-resisting medicines with novel functional actions.
Owner:ZHENGZHOU UNIV
Synthesis method of chiral gamma-amine methylene-gamma-butylene lactone compound
The invention discloses a synthesis method of chiral gamma-amine methylene-gamma-butylene lactone compound, and belongs to the technical field of organic synthesis. According to the synthesis method,Schiff base, a chiral organic small molecular catalyst, and an auxiliary agent are dissolved in anhydrous toluene, an obtained mixture is stirred for 10 to 20min; under nitrogen protection, 2-(trimethyl siloxy)furan is added into an obtained reaction system, an obtained reaction mixture is subjected to column chromatography purification so as to obtain the chiral gamma-amine methylene-gamma-butylene lactone compound. In the synthesis method, Schiff base and 2-(trimethyl siloxy)furan are subjected to asymmetric vinylogy Mannich, product yield is 90% or higher, the highest enantioselectivity is97%, the highest diastereoselectivity is 93:7, and the synthesis method is capable of realizing high efficiency of synthesis of chiral gamma-butylene lactone containing gamma site amine methylene.
Owner:JILIN UNIV
Chiral gamma, gamma-disubstituted butenolide compound and preparation method thereof
The invention discloses a chiral gamma, gamma-disubstituted butenolide compound and a preparation method thereof. Chiral gamma, gamma-disubstituted butenolide compounds widely exist in various naturalproducts, have important biological activity, and are also important intermediates for constructing polyterpene compounds and medicines. According to the application, a series of chiral gamma, gamma-disubstituted butenolide compounds with the yield as high as 98% and the stereoselectivity greater than 20: 1dr and 99% ee are synthesized through a vinylogous Michael addition reaction of gamma-dimerfuranone catalyzed by a bifunctional thiourea catalyst and alpha, beta-unsaturated nitroolefin. According to the method, the functional gamma, gamma-disubstituted butenolide compound with multiple chiral centers can be conveniently, quickly and efficiently obtained.
Owner:INST OF PHARMACY SHANDONG PROV ACAD OF MEDICAL SCI
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