摘要:
Compositions comprising (±)-2-((dimethylamino)methyl)cyclohexanone, a transition-metal salt, and an organic solvent and methods of preparing (±)-cis-2-((dimethylamino)methyl)-1-(aryl)cyclohexanols, in particular (±)-cis-2-((dimethylamino)methyl)-1-(3-methoxyphenyl)cyclohexanol, are disclosed herein. In one embodiment, the (±)-2-((dimethylamino)methyl)cyclohexanone and transition-metal salt are in the form of a (±)-2-((dimethylamino)methyl)cyclohexanone:transition-metal salt complex. In another embodimemt, aryl is 3-methoxyphenyl.
摘要:
A hydroxy-carboxylate ester is converted to an amino-acid-amide by replacement of the --OH group with --N.sub.3, via, e.g., CH.sub.3 SO.sub.2 Cl and NaN.sub.3 ; reacting with amine to convert the ester to amide; and hydrogenating --N.sub.3 to --NH.sub.2. The present process alleviates the conventional use of blocking-deblocking procedures.
摘要:
A process of forming 2-bromo-2-nitro-1,3-propanediol by contacting a 5-nitro-1,3-dioxane with bromine under alkaline conditions and hydrolyzing the brominated product.
摘要:
The invention provides methods for suppressing the degradation of wood, wood products, and wooden structures due to infestation by wood-boring organisms, by use of a polyurea composition. The invention also provides for wood, wood products, and wood structures that are resistant to degradation due to borer infestation by use of a polyurea composition.
摘要:
The invention is directed to novel compounds that are used in the formation of polyurea compositions, including one-part and two-part polyurea compositions. The invention is also directed to polyureas formed from such compounds, cross-linked polyureas, and UV-stabilized polyureas.
摘要:
The present invention is directed to a process for reducing the level of α, β-unsaturated ketone in an opioid analgesic composition by hydrogenation with diimide or a diimide progenitor.
摘要:
Synthesis of phenylserine ester (a) via benzaldehyde and glycine ester using serine hydroxymethyltransferase; and (b) via methyl benzoylacetate. Synthesis of hydroxy-aspartame or derivative by enzymatic coupling of phenylserine or derivative with aspartic acid or derivative. Hydrogenation of the coupled product to give as final product aspartame or analog with related processes and products.
摘要:
This invention relates to opioid ketal compounds of Formula (I), Formula (II), or Formula (III): or a pharmaceutically acceptable salts thereof, wherein R1 is H or CH3, R2 is H or OH, n is 0, 1, 2 or 3, R3 and R4 are independently H or optionally substituted C1-C4 alkyl, or when n is 0, then R3 and R4 and the carbon atoms to which they are attached together form six, or seven membered ring, which is optionally mono or disubstituted by C1-C4 alkyl. The invention also relates to oxycodone ketal compounds of Formula (IV) or (V): or a pharmaceutically acceptable salts thereof. The invention also relates to the use of such compounds for the treatment, prevention, or amelioration of pain.
摘要:
The present invention is directed to a process for reducing the level of α, β-unsaturated ketone in an opioid analgesic composition by hydrogenation the opioid analgesic composition with diimide or a diimide progenitor.
摘要:
Methods for making thebaine and an acid salt of thebaine are disclosed herein. In one embodiment, an acid salt of thebaine is made from codeinone or an acid salt of one or more of the following: 8-methoxy-Δ6-dihydrothebaine, codeinone dimethyl ketal, and neopinone dimethyl ketal.