367 results about "Methylenedioxy" patented technology

A process for the preparation of the compounds of general formula (I)

wherein R is selected from methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec.-butyl and allyl;

• • R₅ is selected from methyl, ethyl, n-propyl, iso-propyl, methoxy, ethoxy, methylthio, ethylthio, n-propylthio, methylsulphinyl, ethylsulphinyl, fluoro, chloro, bromo, trifluoromethyl, and OCH_xF_y; wherein x=0−2, y=1−3 with the proviso that x+y=3; R₆ is hydrogen; or R₅ and R₆ taken together are methylenedioxy; R′ is selected from hydrogen, methyl, methoxy, fluoro, chloro, bromo, trifluoromethyl, and OCH_xF_y, wherein x=0−2, y=1−3 with the proviso that x+y=3; R″ is selected from hydrogen, fluoro and chloro, with the proviso that R″ is selected from fluoro and chloro only when R′ is selected from fluoro and chloro; by reacting a quinoline-3-carboxylic acid ester derivative of formula A, where Z is methyl, with an aniline derivative of formula B according to the following reaction diagram, to give the compound of general formula (I), designated “C”, and an alcohol, designated “D”.

in a solvent selected from straight or branched alkanes and cycloalkanes or mixtures thereof with a boiling point between 80 and 200° C.

The invention generally relates to monoclonal antibodies that recognize at least one compound from the group consisting of (+) methamphetamine, (+) amphetamine, and (+) 3,4-methylenedioxymethamphetamine ((+) MDMA). Generally speaking, the monoclonal antibodies do not recognize (−) methamphetamine, (−) amphetamine, or (−) MDMA.

Bis- and tris-dihydroxyaryl compounds and their methylenedioxy analogs and pharmaceutically acceptable esters, their synthesis, pharmaceutical compositions containing them, and their use in the treatment of synucleinopathies, such as Parkinson's disease, and the manufacture of medicaments for such treatment.

The invention relates to an asymmetric synthesis method of (+)-tanshinol, which comprises the following steps: carrying out Knoevenagel condensation on the raw material heliotropin, hydrolyzing for ring opening to obtain beta-(3,4-3,4-methylenedioxyphenyl)pyruvic acid, carrying out key asymmetric reduction reaction to obtain R-beta-(3,4-dibenzyloxyphenyl)-alpha-hydracrylic acid, and finally, deprotecting to obtain the (+)-tanshinol. The method has the advantages of accessible raw material and high optical purity of the product, is simple to operate, and can implement large-scale preparation.

The invention belongs to the technical field of medicament synthesis, and in particular relates to a chemical synthetic method of hydroxytyrosol. The chemical synthetic method comprises the steps of (1) protecting two phenolic hydroxyl groups of catechol by using dichloromethane, and enabling catechol to react with dichloromethane to prepare 1,2-methylenedioxybenzene; (2) enabling 1,2-methylenedioxybenzene to react with various monoesters of oxalyl chloride to prepare 3,4-methylenedioxy phenylglyoxylic acid ester; (3) preparing 3,4-methylenedioxy phenylacetic acid by using 3,4-methylenedioxy phenylglyoxylic acid ester through a Wollff-kishner-Huang Minglong reduction reaction; and (4) reducing the 3,4-methylenedioxy phenylacetic acid by using lithium aluminum hydride, lithium borohydride or sodium borohydride to prepare 3,4-methylenedioxy phenethyl alcohol, and then removing methylene protection of the 3,4-methylenedioxy phenethyl alcohol by using boron tribromide or palladium on activated carbon to prepare hydroxytyrosol. A reactive reagent used in the synthetic method disclosed by the invention is easy to obtain and low in price, the reaction condition is mild, and the final yield of the whole reaction is 23%.

The invention relates to the discovery that specific adamantyl or adamantyl group derivatives containing retinoid-related compounds induce apoptosis of cancer cells and therefore may be used for the treatment of cancer, including advanced cancer. Also, the present invention relates to novel adamantyl or adamantyl group derivatives containing retinoid compounds and their usage for treatment and/or prevention of cancer, keratinization disorders, dermatological conditions, and other therapies More specifically, it has been shown that such adamantyl compounds, e.g., 6-[3-(1-adamantyl)-4-methoxyphenyl]-2-naphthoic acid, 2-[3-(1-adamantyl)-4-methoxyphenyl]-5-benzimidazole carboxylic acid, and 6-[3-(1-adamantyl)-4,5-methylenedioxyphenyl]-2-naphthoic acid, can be used to treat or prevent cervical cancers and precancers such as cervical dysplasias, including high grade and low grade dysplasias.

The invention belongs to the field of traditional Chinese medicine preparation, and relates to application of an amide compound 5'-methoxy-3',4'-methylenedioxy cinnamic acid isobutyl amide extracted from plants in preparing antidepressant medicaments.

A pharmaceutical composition for treating a transient ischemic attack which comprises a compound of the formula: wherein R1 is a pyridyl group, R2 is a phenyl, thienyl, furyl, naphthyl, benzothienyl or pyridyl group, which may be substituted with a lower alkoxy group, a lower alkyl group, a halogen atom, trifluoromethyl group, a lower alkenyl group or/and methylenedioxy group, R3 is hydrogen atom or a lower alkyl group, and l is an integer of 0 to 6, Y is sulfur atom, methylene group or a group of the formula: wherein R4 is hydrogen atom or acetyl group, and m is 0 or 1, or a pharmaceutically acceptable salt.

The present invention provides novel N-benzyldioxothiazolidylbenzamide derivatives that improve the insulin resistance and have potent hypoglycemic and lipid-lowering effects and processes for preparing the same, and relates to N-benzyldioxothiazolidylbenzamide derivatives characterized by being represented by a general formula (1) [wherein R1 and R2 denote identically or differently hydrogen atoms, lower alkyl groups with carbon atoms of 1 to 4, lower alkoxy groups with carbon atoms of 1 to 3, lower haloalkyl groups with carbon atoms of 1 to 3, lower haloalkoxy groups with carbon atoms of 1 to 3, halogen atoms, hydroxyl groups, nitro groups, amino groups which may be substituted with lower alkyl group(s) with carbon atoms of 1 to 3 or hetero rings, or R1 and R2 link to form a methylenedioxy group, R3 denotes a lower alkoxy group with carbon atoms of 1 to 3, hydroxyl group or halogen atom, and dotted line indicates double bond or single bond in combination with solid line], and processes for preparing the same.

The invention relates to a fibriuretinin synthesis method. The method takes berberine hydrochloride as a starting material and comprises the following steps: selectively carrying out decomposition reaction on methylenedioxy of the berberine hydrochloride to obtain ortho-dyhydroxyl berberine hydrochloride; carrying out methylation reaction on hydroxyl of the ortho-dyhydroxyl berberine hydrochloride and dimethyl sulfate, recrystallizing, and adding hydrochloric acid to regulate pH value to obtain the target product, i.e. fibriuretinin. The fibriuretinin synthesis method has less synthesis steps, simple technology, and high total yield of 49.3% and the raw materials are easy to collect, so as to reduce cost, improve production efficiency and contribute a new synthesis method for fibriuretinin chemosynthesis industrialization.

The invention discloses a synthetic process of berberine. The synthetic process comprises the following synthetic route: pyrocatechol and dichloromethane are taken as raw materials and dimethyl sulphoxide is taken as a solvent to synthesize 1,3-benzodioxole; 1,3-benzodioxole is subjected to ViLsmeiar formylation to synthesize heliotropin; heliotropin undergoes nitration through a Henry reaction to generate beta-nitro-3,4-dioxomethenyl styrene; beta-nitro-3,4-dioxomethenyl styrene is subjected to Clemmensen reduction to generate 3,4-(methylenedioxyphenyl)ethylamine; and 3,4-(methylenedioxyphenyl)ethylamine and 2,3-dimethoxy benzaldehyde condense, and the obtained product is reduced to generate N-2,3-dimethoxybenzyl [3,4-(methylenedioxy)phenyl]ethylamine hydrochloride. N-2,3-dimethoxybenzyl [3,4-(methylenedioxy)phenyl]ethylamine hydrochloride is cyclized in a condition of glyoxal, formic acid and copper sulphate to generate berberine hydrochloride. According to the synthetic route, cyanation is avoided and toxicity is reduced. Zinc amalgam is adopted to replace H2Ni and LiAlH4, so that the cost is greatly reduced, the process difficulty is reduced, and the product yield is increased.

An improved contrast electrochromic polymers(ECP), is a copolymer having donor sequences with a normal distribution of at least one solubilizing donor repeating unit selected from substituted propylenedioxythiophene units (ProDOT) and/or substituted acyclic dioxythiophene units (AcDOT) and a plurality of monodispersed trimer sequences consisting of an acceptor unit bonded between two ethylenedioxythiophene units (EDOT), two methylenedioxythiophene units (MDOT), or a fused DAD trimer, where the monodispersed trimer sequence separates two of the donor sequences. One useful monodispersed trimer sequence is EDOT-BTD-EDOT (EBE). The donor sequences can have ProDOT units bound to the monodispersed trimer sequence. The donor sequence can have ProDOT units alternating with AcDOT units. Useful ECPs can have the structure: Pro-Pro/EBE; Ac-Ac/EBE; or Pro-Ac_x/EBE_1−x where x is a fraction between 0.5 and 0.9.

The invention discloses an N-P flameresistant material and a preparation method thereof and application in textiles. The chemical name of a flame retardant of the material is hexa(1-oxo-phospha-2,6,7-trioxabicyclo[2,2,2]octane-4-methylenedioxy)cyclotriphosphazene (HCPPA); the preparation method of the material comprises the steps of synthesizing hexachlorocyclotriphosphazene (HCPP) by reacting ammonium chloride with phosphorus pentachloride, wherein a catalyst is pyridine and ZnO; then synthesizing 1-oxo-phospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2,2,2]octane (PEPA) by reacting pentaerythritol with phosphorus oxychloride; finally synthesizing the HCPPA by reacting the HCPP with the PEPA. According to the preparation method, NaH is used as a catalyst, so that the synthesis reactions can be performed quickly, the reaction time is greatly shortened, and the product yield is improved. When the N-P flame retardant is used for retarding a flame of a cotton fabric, high limit oxygen index and char yield are achieved, and the wash durability is good.

The present invention discloses compounds of the formula any of its enantiomers or any mixture thereof, isotopes thereof or a pharmaceutically acceptable salt thereof; wherein n is 1, 2 or 3; m is 0, 1 or 2; R represents hydrogen, alkyl, cycloalkyl, cycloalkylalkyl, or aralkyl; and R<1 >represents aminophenyl; nitrophenyl; hydroxyphenyl, alkoxyphenyl; a monocyclic 5 to 6 membered heterocyclic group which may be substituted one or more times with substituents selected from the group consisting of alkyl, cycloalkyl, cycloalkylalkyl, alkenyl, alkynyl, alkoxy, cycloalkoxy, alkenoxy, alkynoxy, alkynoxy, methylenedioxy, halogen, CF3, OCF3, CN, amino, nitro, -COOR<3>, -CONR<2>R<3>, -NH-CO2R<2>, NHCO-R<2>, -OCO-NR<2>R<3>; wherein R<2 >and R<3 >independently represents hydrogen or alkyl; aryl optionally substituted one or more times with alkyl, cycloalkyl, cycloalkylalkyl alkenyl, alkynyl, alkoxy, cycloalkoxy, alkenoxy, alkynoxy, methylenedioxy, halogen, CF3, OCF3, CN, amino and nitro; -X-alkyl-Y-alkyl wherein X and Y independently represents O, S, NH, N-alkyl or Se; and alkyl is optionally substituted with alkoxy or thioalkoxy; -X-(alkyl)o-aryl wherein o is 0 or 1 and X represents O, S, NH, N-alkyl or Se; optionally substituted one or more times with alkyl, cycloalkyl, cycloalkylalkyl alkenyl, alkynyl, alkoxy, cycloalkoxy, alkenoxy, alkynoxy, methylenedioxy, halogen, CF3, OCF3, CN, amino and nitro; -X-(alkyl)o-Z wherein o is 0 or 1 and X represents O, S, NH, N-alkyl or Se and Z represents a 5- or 6-membered monocyclic heterocyclic group; optionally substituted one or more times with alkyl, cycloalkyl, cycloalkylalkyl alkenyl, alkynyl, alkoxy, cycloalkoxy, alkenoxy, alkynoxy, methylenedioxy, halogen, CF3, OCF3, CN, amino and nitro; a monocyclic 5 to 6 membered heterocyclic group optionally substituted one or more times with alkyl, cycloalkyl, cycloalkylalkyl, alkenyl, alkynyl, alkoxy, cycloalkoxy, alkenoxy, alkynoxy, methylenedioxy, halogen, CF3, OCF3, CN, amino and nitro; or or R<1 >represents a bicyclic heterocyclic group, composed of a 5 to 6 membered monocyclic heterocyclic group fused to a benzene ring, and which may be substituted one or more times with substituents selected from the group consisting of alkyl, cycloalkyl, cycloalkylalkyl alkenyl, alkynyl, alkoxy, alkoxy-alkoxy, cycloalkoxy, alkenoxy, alkynoxy, methylenedioxy, halogen, CF3, OCF3, CN, amino, nitro, aryl optionally substituted one or more times with alkyl, cycloalkyl, cycloalkylalkyl alkenyl, alkynyl, alkoxy, cycloalkoxy, alkenoxy, alkynoxy, methylenedioxy, halogen, CF3, OCF3, CN, amino and nitro; and a monocyclic 5 to 6 membered heterocyclic group optionally substituted one or more times with

A novel compound having an excellent NF?B inhibitory effect. Specifically disclosed is a compound represented by formula (1) or a salt thereof. (In the formula, R1 represents a hydrogen atom, a lower alkyl group or the like; R2 represents a hydrogen atom, a lower alkyl group, a halogen atom or the like; R3 represents a hydrogen atom, a lower alkyl group, a hydroxy group or a halogen atom; R4 represents a hydrogen atom or a lower alkyloxy group; R5 represents a hydrogen atom, a lower alkyloxy group, a halogen atom or a hydroxy group, or alternatively forms a methylenedioxy group or an isopropylidenedioxy group together with R6; R6 represents a hydrogen atom or a lower alkyloxy group, or alternatively forms a methylenedioxy group or an isopropylidenedioxy group together with R5; R7 represents a hydrogen atom or a lower alkyl group; and R8 represents a hydrogen atom, a hydroxy group, an amino group, a lower alkylcarbonyloxy group or a halogen atom.)

A topical applications is used to treat and prevent the spread of nail infections or onychomycosis caused by bacteria, fungi and other pathogens. The topical application has a composition that comprises, as an active ingredient, at least one species selected from the group consisting of 2,2′-(alkyldioxy)bis-(alkyl-1,3,2-dioxaborinane) and 2,2′-oxybis(alkyl-1,3,2-dioxaborinane). More specifically, the composition comprises, as an active ingredient, at least one member selected from the group consisting of 2,2′-(1-methyltrimethylenedioxy)bis-(4-methyl-1,3,2-dioxaborinane) and 2,2′-oxybis(4,4,6-trimethyl-1,3,2-dioxaborinane).

The present invention relates to a pharmaceutical composition, a food composition or a cosmetic composition, containing one or more kinds of a compound represented by the following formula (I′)

wherein R1 is a hydrogen atom, a hydroxyl group, a methoxy group or an ethoxy group, R2 is a hydroxyl group, a methoxy group or an acetoxy group, or R1 and R2 in combination optionally form a methylenedioxy group,

R is represented by the following formula

wherein Y is an ethylene group or a vinylene group, m and n are each an integer of 0 to 7, which satisfy m+n=2 to 8, and R3 and R4 are each independently a hydrogen atom, a methyl group or an ethyl group,

provided that,

(1) when R1 is a methoxy group, then R2 is not a hydroxyl group; and

(2) when R1 is a hydroxyl group, then R2 is not a hydroxyl group and an acetoxy group.

According to the present invention, a stable capsinoid derivative is provided, and a pharmaceutical composition, a food composition, a cosmetic composition and the like containing the derivative as an active ingredient can be provided.

The invention discloses a 1,8-naphthalimide derivative as well as a synthesis method and an application thereof. The derivative is N-(3,4-methylene dioxophenethyl)-4-(3-N,N-dimethylamino)propylamino-1,8-naphthalimide; and the compound is prepared by taking 4-bromo-1,8-naphthalic anhydride as a raw material which sequentially reacts with 3,4-methylene dioxophenylethylamine and N,N-dimethyl-1,3-diaminopropane. The synthesis method is simple and easy to control. The applicant observes the proliferation inhibition activity of the 1,8-naphthalimide derivative on 9 human tumor cell strains and two normal cell strains, and the results indicate that the in-vitro antitumor activity is remarkable and the 1,8-naphthalimide derivative has relatively good potential medicinal value and is expected to be applied to the preparation of various anti-tumor drugs. The chemical structural formula of the compound disclosed by the invention is shown by the formula (I).

The invention discloses a synthesis process of palmatine and its salts mainly comprising the following steps, (1) etherification, preparation of o-dimethoxybenzene, (2) acetonitrilizaiton, preparation of methylenedioxy benzene acetonitrile, (3) hydrogenization, preparation of o-dimethoxy-phenethylamine, (4) condensation, preparation of condensate hydrochlorates, (5) recondensation, preparation of palmatine, (6) preparation of corresponding salts from palmatine with related acids.

This invention relates to bis- and tris-dihydroxyaryl compounds and their methylenedioxy analogs and pharmaceutically acceptable salts and their use in the modulation of Sirtuin 1 (Sirt1) and there use in neuroprotection for subject suffering from neurodegenerative diseases such as Alzheimer's disease, Huntington's disease, Amyotrophic lateral sclerosis, frontotemporal dementia, Parkinson's disease, including Parkinson's plus diseases such as multiple system atrophy, progressive supranuclear palsy, corticobasal degeneration and dementia with Lewy bodies, and in the manufacture of medicaments for such Sirt1 modulation and neuroprotection.