摘要:
The present invention describes a novel synthetic method for preparing the key intermediate 2,6,10-trimethyl-1,1-dialkoxy-3,5,9-undecatriene of lycopene. An existing synthetic method have some disadvantages that it is very difficult to gain the raw material dialkyl 4-methyl-5,5-diakoxy-1-pentene-1-phosphonate (10) because no effective synthetic method can be adopted, and furthermore the obtained target compound is composed of several cis/trans isomers. This invention relates to a process comprising a condensation step wherein a starting C10-phosphonate is changed to its carbanion completely at a temperature of −40˜30 under an atmosphere of a non-reactive gas in an organic solvent catalyzed by base, and then C4-dialkyl is added to undergo Wittig-Horner condensation. This invention affords all trans C14-acetal and this method is characterized with the advantages of simple procedure, easy access to raw material and low cost, which makes it has the value of industrial application.
摘要:
The present invention is directed to a process for the manufacture of 2-pentyn-1-ol starting from 2-propyn-1-ol via the following intermediates (I), (II) wherein R1 is H or linear C1-6 alkyl, R2 is linear C1-6 alkyl or branched C3-6 alkyl and R3 is linear C1-6 alkyl, as well as to the intermediates themselves.
摘要:
The present invention relates to an intermediate (12) of lycopene of 2,6,10-trimethyl-1,1-dialkoxyl-3,5,9-undecantriene of formula, (12) and its intermediate of 4-methyl-5,5-dialkoxyl-1-pentenyl-1-phosphonic acid dialkyl ester of formula (10), and their preparation methods. The process route is simple, the starting materials are available easily, the cost is low, and it is valuable in industry.
摘要:
Disclosed herein are methods of treatment and prevention of diseases and disorders related to estrogen receptors comprising administering novel di-aromatic compounds to patients in need thereof.
摘要:
The present application provides a synthetic spilanthol flavor composition that includes (2E,6Z,8E)-N-(2-methylpropyl)-2,6,8-decatrienamide. The synthetic spilanthol composition can also contain, and at least one of (2E,6E,8E)-N-(2-methylpropyl)-2,6,8-decatrienamide and (2E,6Z,8Z)—N-(2-methylpropyl)-2,6,8-decatrienamide, the (N-(2-methylpropyl)-2,6,8-decatrienamide being present in amounts effective to impart a salivating or tingle effect while reducing the perception of off notes, as compared to the off-notes perceived upon consumption of natural spilanthol (e.g. spilanthol obtained from jambu oleoresin). Methods of increasing salivation and/or providing a tingling sensation upon consuming an orally consumable product that include adding to the product a synthetic spilanthol flavor composition are also provided. Synthetic spilanthol flavor compositions can be added to orally consumed products, such as, but not limited to, foods, beverages, pharmaceuticals, nutraceuticals, or therapeutic compositions, oral personal care products, gums (e.g. chewing gum or bubble gum), candy or lozenges.
摘要:
An organosolv process for producing bio-products by decomposing lignocellulosic materials comprises providing an initial lignin solvent with water, an acid, and a lignin dissolving chemical comprising at least one of an organic ester, butyl acetate, an organic furan, and furfural. The process also includes placing the lignin solvent in contact with a biomass to form a circulation solvent, and recycling at least a portion of the circulation solvent by circulating the circulation solvent back into contact with the biomass. The circulating of the circulation solvent occurs for a period of time, after which, the process then includes separating material such as chemicals and lignin from the circulation solvent. The chemicals can be recycled as new solvent or sold while lignin can be used as natural and renewable colorant for polymers such as poly lactic acid.
摘要:
A problem as an object of the invention is to provide a production method of spilanthol in a large scale without using expensive reagents. The present invention provides a production method of N-isobutyl-2,6,8-decatrienamide, wherein a column chromatography purification step is not required in all processes.
摘要:
A process for preparing polyoxymethylene dialkyl ethers of the formula H2m+1CmO(CH2O)nCmH2m+1 where n=2-10, m, identically or differently,=1 or 2, in which a dialkyl ether selected from dimethyl ether, methyl ethyl ether and diethyl ether, and trioxane are fed into a reactor and reacted in the presence of an acidic catalyst, the amount of water introduced into the reaction mixture by the dialkyl ether, trioxane and/or the catalyst being
摘要:
Disclosed herein are methods of treatment and prevention of diseases and disorders related to estrogen receptors comprising administering novel di-aromatic compounds to patients in need thereof.
摘要:
Disclosed herein are novel di-aromatic compounds and methods for using various di-aromatic compounds for treatment and prevention of diseases and disorders related to estrogen receptors.