43 results about "2H-chromene" patented technology

The present invention is directed to substituted 4H-chromenes, 2H-chromenes, chromans and analogs thereof, represented by the general Formula (I) wherein R₅, A, B, X, Y, Z and dotted lines are defined herein. The present invention also relates to the discovery that compounds having Formula (I) are activators of caspases and inducers of apoptosis. Therefore, the activators of caspases and inducers of apoptosis of this invention can be used to induce cell death in a variety of clinical conditions in which uncontrolled growth and spread of abnormal cells occurs.

[Object] Provided is a compound which has an excellent S1P₁ agonist action, and is useful particularly as an active ingredient for an agent for preventing and/or treating a disease induced by undesirable lymphocyte infiltration or a disease induced by abnormal proliferation or accumulation of cells.

[Means for Solution] According to the present invention, a 2H-chromene compound or a derivative thereof which has an excellent S1P₁ agonist action, and is useful particularly as an active ingredient of an agent for preventing and/or treating a disease induced by undesirable lymphocyte infiltration or a disease induced by abnormal proliferation or accumulation of cells can be provided. The 2H-chromene compound and a derivative thereof which are the compounds of the present invention have an S1P₁ agonist action, and can be used particularly for prevention and/or treatment of a disease induced by undesirable lymphocyte infiltration or a disease induced by abnormal proliferation or accumulation of cells.

The invention concerns a novel process for the preparation of 2H-chromenes of formula I and formula 5 and valuable intermediates of formulae 3 and 4 of this process.

The present disclosure provides a compound of Formula I:

or a pharmaceutically acceptable salt wherein X, R¹-R⁸, Y¹-Y⁵, m, n, p, and q are defined herein. The novel 2H-chromene compounds are useful for the modulation of disorders mediated by estrogen, and other disorders, as described herein. The present invention also relates to pharmaceutical compositions containing the compounds and to methods of using the compounds and compositions.

This invention relates to a method for photoracemizing enantiomers of a substituted 2-trifluoromethyl-2H-chromene-3-carboxylic acid or ester, a substituted 2-trifluoromethyl-1,2-dihydro-quinoline-3-carboxylic acid or ester, a substituted 2-trifluoromethyl-2H-thiochromene-3-carboxylic acid or ester, or a pharmaceutically acceptable salt of the acids or esters, using a high intensity UV light source.

A fluorescent dye or fluorophore capable of forming complexes with mercury comprises 6,8-difluoro-7-hydroxy-2-oxo-2H-chromene-3-carboxylate amide, wherein the amide is formed by reacting the succinimidyl ester (Pacific Blue™) with an amino acid containing a thiol group, such as cysteine or glutathione. Mercury complexes of the fluorophore fluoresce when excited by a UV or violet laser diode, and the detected intensity can be calibrated to quantify the concentration of mercury in a sample reacted with the fluorophore.

The invention provides a two-photon fluorescent probe for detecting Cys with the chemical name of 7-(diethylamino)-2-oxo-2H-chromene-3-acrylate, and the structural formula as shown in the description.The probe provided by the invention has small background interference, small scattering interference and high sensitivity and selectivity, can avoid photobleaching and phototoxicity, and can penetrate into tissue for deep imaging, and has broad application prospects in the field of biomolecule detection.

The invention discloses a preparing method of (E)-N'-arylmethylene-4-(coumarin-3-yl)thiazole-2-hydrazide compound and its application. A formula (I) of the compound is shown as below. The preparing method includes: making salicylic aldehyde and ethyl acetoacetate into 3-acetylindole-2H-chromene-2-one, allowing bromization, cyclization and hydrazinolysis to obtain 4-(2-oxo-2H-chromene-3-yl)thiazole-2-hydrazine, and allowing the 4-(2-oxo-2H-chromene-3-yl)thiazole-2-hydrazine to react with substituted benzaldehydes to obtain the target compound. The compound can serve as a raw material for antiseptic medicine; the preparing method has the advantages that the raw materials are simple and easy to obtain and operating is convenient.

2H-chromen-2-one derivatives useful in the treatment of bacterial infections in mammals, particularly humans, are disclosed herein.

The invention relates to a method for synthetizing Tegoprazan chiral alcohol, in particular to a preparation method of (S)-5,7-difluoro-3,4-dihydro-2H-chromene-4-alcohol. The method is characterized in that 5,7-difluoro-4H-benzopyran-4-ketone is used as a starting material; through chiral reagents, ketone carbonyl groups are subjected to asymmetric reduction and subsequent conventional hydrogenation reaction; the preparation of the (S)-5,7-difluoro-3,4-dihydro-2H-chromene-4-alcohol is realized.

Described herein are C5-C6 annulated naphthopyrans that possess at least one electron-withdrawing group. The compounds possess desirable properties such as increased fading kinetics. Also described herein are new methods for synthesizing 2H- chromenes annulated at C5-C6. The methods involve less stringent reaction conditions as well as provide increased reaction yields. The methods permit the synthesis of a wide variety of substituted naphthopyrans that can be temperature sensitive and were not possibly synthesized with previous synthetic routes.

The invention discloses a preparation method of 4-tosylester-2H-chromene, wherein ortho propargyl alcohol phenol is used as a raw material, an organic solvent is added to dissolve fully at room temperature, and then p-toluenesulfonic acid (p-TsOH) is added and reacted at 60 DEG C for 1 to 2 hours. After the reaction is completed, the reaction product is separated and purified by column chromatography on silica gel to obtain the 4-tosylester-2H-chromene. The invention has the characteristics of simple and easily accessible raw materials, mild reaction conditions, simple operation, short reaction time and less pollution and the like, and is a better chemical synthesis method with popularization and application prospects.

The invention discloses a preparation method for 4-Cl-2H-chromene, which is characterized in that: as raw material, bis-(trichloromethyl) carbonate (BTC) and N, N-dimethylformamide (DMF) are reacted fully in organic solvent at the temperature of 0 to 5 DEG C; then substituted o-hydroxy chalcone compound as shown in the formula (I) is added for reaction for 0.5 to 2 hours at the temperature of 0 to 5 DEG C before heated to 60 to 90 DEG C for full reaction; 4-Cl-2H-chromene derivative as shown in the formula (II) can be get through separating and purifying reaction products after the reaction is ended. The preparation method for 4-Cl-2H-chromene has the advantages of easy availability for raw material, mild reaction condition, convenient operation, high yield and chemical synthetic method with better popularization and application prospect. The preparation method for 4-Cl-2H-chromene abolishes phosphate pollution source and greatly lowers the content of N, N-dimethylformamide.

The invention discloses a chromone derivative, a preparation method and application thereof. The chromone derivative is separated from a cassia leschenaultiana whole plant, the molecular formula is C18H20O4, and the compound is named as: 6-(2, 2-dimethyl-2H-chromene)-2-isopropyl-8-methoxy-4H-chromen-4-one. The preparation method of the chromone derivative includes: taking a cassia leschenaultianawhole plant as the raw material, and conducting crushing, extraction, silica gel column chromatography and high pressure liquid chromatography separation steps. Biological activity test indicates thatthe compound provided by the invention has a good inhibiting effect on tobacco mosaic virus. The compound provided by the invention is easily separable, has good activity, and can be used as a leading compound against tobacco mosaic virus.

The invention discloses a <18>F-labeled-8-ethoxy-2-(4-fluorophenyl)-3-nitro-2H-chromene (S14161) and a preparation method thereof. The preparation method has the following advantages: preparation raw materials are cheap and are easy to obtain, the synthesis process is simple, reaction conditions are mild, and the radiochemical synthesis time is short; the above product is simple and convenient to purify and separate, the radiochemical purity of the product exceeds 98%, the radiochemical yield of the product is high, the uncorrected yield reaches up to 92%, and the radioactivity of the product is high; and the product is useful in the inspection and diagnosis of tumors and the radiation therapy of the tumors. The structural formula of the <18>F-labeled-8-ethoxy-2-(4-fluorophenyl)-3-nitro-2H-chromene is shown in the description.

The invention relates to the use of the compound of general formula 1 or its spatial isomers

as an analgesic drug. The compounds have high activity, low toxicity, may be used in medicine.

The present invention relates to a kind of containing perfluoroalkyl 2 H Chromene derivatives and synthetic methods thereof, the structure of the compound is: Wherein, R is H, methoxy, bromo, methyl or nitro; RF is trifluoromethyl or pentafluoroethyl. The method of the present invention is synthesized by two-component one-pot method, compared with the method of original report, this method uses L -Proline as a green and mild organic catalyst to synthesize perfluoroalkyl-containing 2 H -Chromene derivatives have the advantages of high atom economy, environmental friendliness, easy operation and mild conditions. The reaction uses anhydrous methanol as a solvent, which has little environmental pollution. High regioselectivity and good yield. Therefore, this method is the synthesis of perfluoroalkyl-containing 2 H - Efficient new approach to chromene derivatives.

The present invention includes compositions and methods of for treating plants infected with fungal pathogens by contacting an infected plant or plant at risk of infection with a fungicidal composition comprising an fungicide selected from copper compound such as copper octanoate or copper hydroxide, or a triazole fungicide such as myclobutanil, propiconazole, tebuconazole or epoxiconazole, an enhancer selected from apyrase inhibitors, e.g., N-(m-toly1)-[1, 1′-biphenyl]-4-sulfonamide, S-heptyl 2-oxo-2H-chromene-3-carbothioate, 3-(N-(4-bromophenyl) sulfamoyl)-N-(3-nitrophenyl) benzamide, or (E)-3-methyl-N-(1-(naphthalen-2-yl) ethylidene) benzohydrazide and, optionally, a phytologically-acceptable inert carrier.