Reactions of relevance to the chemistry of aminoglycoside antibiotics. Part 8. Synthesis and properties of O-alkyl selenoesters
作者:Derek H. R. Barton、Per-Egil Hansen、Kelvin Picker
DOI:10.1039/p19770001723
日期:——
from the appropriate di-N-substituted imidoyl chloride with use of sodium hydrogen selenide to introduce selenium. The reduction of selenoesters to ethers has been demonstrated, as well as the ready reaction of these compounds with the methylene Wittig reagent.
BITTER TASTE MODIFIERS INCLUDING SUBSTITUTED 1-BENZYL-3-(1-(ISOXAZOL-4-YLMETHYL)-1H-PYRAZOL-4-YL)IMIDAZOLIDINE-2,4-DIONES AND COMPOSITIONS THEREOF
申请人:SENOMYX, INC.
公开号:US20160376263A1
公开(公告)日:2016-12-29
The present invention includes compounds and compositions known to modify the perception of bitter taste, and combinations of said compositions and compounds with additional compositions, compounds, and products. Exemplary compositions comprise one or more of the following: cooling agents; inactive drug ingredients; active pharmaceutical ingredients; food additives or foodstuffs; flavorants, or flavor enhancers; food or beverage products; bitter compounds; sweeteners; bitterants; sour flavorants; salty flavorants; umami flavorants; plant or animal products; compounds known to be used in pet care products; compounds known to be used in personal care products; compounds known to be used in home products; pharmaceutical preparations; topical preparations; cannabis-derived or cannabis-related products; compounds known to be used in oral care products; beverages; scents, perfumes, or odorants; compounds known to be used in consumer products; silicone compounds; abrasives; surfactants; warming agents; smoking articles; fats, oils, or emulsions; and/or probiotic bacteria or supplements.
Synthesis, Biological Evaluation, and Structure−Activity Relationships of 3-Acylindole-2-carboxylic Acids as Inhibitors of the Cytosolic Phospholipase A<sub>2</sub>
作者:Matthias Lehr
DOI:10.1021/jm960863w
日期:1997.8.1
Replacement of the carboxylic acid group in position 2 of the indole with an acetic or propionic acid substituent led to a decrease of inhibitory potency. Enzyme inhibition was optimal when the acyl residue in position 3 had a length of 12 or more carbons. Conformational restriction of the acyl residue did not influence activity. Introduction of alkyl chains at position 1 of the indole with 8 or more carbons
A CONVENIENT METHOD FOR THE SYNTHESIS OF CARBOXAMIDES AND PEPTIDES BY THE USE OF TETRABUTYLAMMONIUM SALTS
作者:Yutaka Watanabe、Teruaki Mukaiyama
DOI:10.1246/cl.1981.285
日期:1981.3.5
aqueous THF with bis(o-nitrophenyl) phenylphosphonate in the presence of tetrabutylammonium hydrogen sulfate or bromide. Carboxylic esters are also successfully converted to amides via carboxylate salts in one-pot.
[EN] PROCESS FOR PRODUCING NITROGEN-CONTAINING COMPOUNDS<br/>[FR] PROCÉDÉ DE PRODUCTION DE COMPOSÉS AZOTÉS
申请人:KAO CORP
公开号:WO2009020244A1
公开(公告)日:2009-02-12
The present invention relates to a process for producing a tertiary amine in the presence of a catalyst containing copper and at least one element selected from the group consisting of elements belonging to Groups 2, 3, 7 and 12 of the Periodic Table (long form of the periodic table), said process including the steps of (a) reducing an amide compound in a hydrogen atmosphere; and (b) introducing a dialkyl amine containing a linear or branched alkyl group having 1 to 6 carbon atoms into a reaction product obtained in the step (a), and treating the reaction product with the dialkyl amine. The present invention provides a process for producing high-purity aliphatic tertiary amines containing a less amount of by-products by reducing aliphatic acid amides under moderate conditions using a chromium-free catalyst, as well as a process for producing amine derivatives such as amine oxide by using the aliphatic tertiary amines, with a good productivity in an economical manner.