摘要:
In a process for the regeneration of a coked metal-containing catalyst, the coked catalyst is contacted in a regeneration zone with an atmosphere which contains carbon dioxide and carbon monoxide at a temperature of at least 400 °C.
摘要:
Described is a method for slowing the speed of the isomerisation of petasin and neopetasin to isopetasin, and the isomerisation of S-petasin and neo-S-petasin to iso-S-petasin, especially in extracts from plants of the genus Petasites, preferably Petasites hybridus, by the addition of at least one suitable stabilizer and/or the removal of at least one destabilizing substance, e.g. a fatty acid.
摘要:
The present invention relates to -(7,10,10-trimethyl-4-bicyclo[6.2.0]decanyl)ethanone, the use of 1-(7,10,10-trimethyl-4-bicyclo[6.2.0]decanyl)ethanone as a fragrance or as flavor, to a method for imparting or modifying a scent or a flavor to a composition by including said compound into such composition, to a fragrance containing composition and/or a fragrance material containing said compound and to a process for preparing 1-(7,10,10-trimethyl-4-bicyclo[6.2.0]decanyl)ethanone.
摘要:
The present invention provides a method for the purification of pravastatin comprising extracting a solution comprising pravastatin in a water-immiscible solvent with water at a pH value ranging from 5.0 to 7.0.
摘要:
Neurite outgrowth-promoting prostaglandins (NEPPs) and other electrophilic compounds bind to Keapl, a negative regulator of the transcription factor Nrf2, and prevent Keapl -mediated inactivation of Nrf2 and, thus, enhance Nrf2 translocation into the nucleus of neuronal cells. Therefore, neuroprotective compositions and related methods are provided that employ such neuroprotective compounds, and prodrugs of such compounds, to cause dissociation of Nrf2 from a Keapl /Nrf2 complex.
摘要:
The invention relates to novel 2,4,6-trialkylphenyl substituted cyclopentane-1,3-dione of formula (I), in which X, Y, A, B, Q 1 , Q 2 and G are defined as cited in the claims, to several methods and intermediate products for their production and to their use as pesticides and/or herbicides, in addition to selective herbicidal agents containing 2,4,6 trialkylphenyl substituted cyclopentane-1,3-diones of formula (I) and at least one compound that improves their compatibility with cultivated plants.
摘要:
In one aspect, the present invention provides a hyperpolarizable organic chromophore. The chromophore is a nonlinear optically active compound that includes a p-donor conjugated to a p-acceptor through a p-electron conjugated bridge. In other aspects of the invention, donor structures and acceptor structures are provided. In another aspect of the invention, a chromophore containing polymer is provided. In one embodiment, the chromophore is physically incorporated into the polymer to provide a composite. In another embodiment, the chromophore is covalently bonded to the polymer, either as a side chain polymer or through crosslinking into the polymer. In other aspects, the present invention also provides a method for making the chromophore, a method for making the chromophore-containing polymer, and methods for using the chromophore and chromophore-containing polymer.
摘要:
The present invention relates to rigid chiral ligands useful in making catalysts for asymmetric synthesis. More particularly, the present invention relates to new monodentate and bidentate cyclic chiral phosphine ligands which are formed into catalysts to provide high selectivity of the enantiometric structure of the end-product.