Terminally modified tri-, tetra- and pentapeptide anaphylatoxin receptor
申请人:Abbott Laboratories
公开号:US05190922A1
公开(公告)日:1993-03-02
Oligopeptide compounds or oligopeptide analogue compounds of the formula A-B-D-E-G-J-L are ligands for the anaphylatoxin receptor and are useful in the treatment of inflammatory disease states. Also disclosed are anaphylatoxin receptor ligand compositions and a method for modulating anaphylatoxin activity.
Ionic liquid as catalyst and solvent: the remarkable effect of a basic ionic liquid, [bmIm]OH on Michael addition and alkylation of active methylene compounds
作者:Brindaban C. Ranu、Subhash Banerjee、Ranjan Jana
DOI:10.1016/j.tet.2006.10.077
日期:2007.1
ketones, carboxylic esters and nitriles. It further catalyzes the addition of thiols to α,β-acetylenic ketones and alkylation of 1,3-dicarbonyl and -dicyano compounds. The Michael addition to α,β-unsaturated ketones proceeds in the usual way, giving the monoaddition products, whereas addition to α,β-unsaturated esters and nitriles leads exclusively to the bis-addition products. The α,β-acetylenic ketones
A Gallium-Catalyzed Cycloisomerization/Friedel−Crafts Tandem
作者:Hui-Jing Li、Régis Guillot、Vincent Gandon
DOI:10.1021/jo101709n
日期:2010.12.17
specificity of gallium has been exploited for the synthesis of valuable polycycliccompounds that would be very difficult to prepare otherwise. For instance, tetrahydroisoquinolines and tetrahydrobenzoazepines have been obtained by selective 6-exo-dig or 7-endo-dig cyclization of N-tethered 1,6-arenynes. DFT calculations were carried out to shed light on the mechanism and provide a rationale for this regiodivergency
Efficient Preparation of α,α-Dialkyl-α-(phenylselanyl)acetates and α,β-Unsaturated Esters from the Corresponding α,α-Dialkyl-α-cyanoacetates by a Lithium Naphthalenide Induced Reductive Selenenylation Process
作者:Jia-Liang Zhu、Yen-Chun Ko
DOI:10.1055/s-2007-990884
日期:2007.12
array of α,α-dialkyl-α-(phenylselanyl)acetates has been synthesized very efficiently from readily available a,a-dialkyl-a-cyanoacetates, by use of lithium naphthalenide induced reductive α-selenenylation as a key operation. Moreover, the selanyl esters thus generated in situ could be converted further, in a one-pot treatment with hydrogen peroxide and acetic acid, into the corresponding α,β-unsaturated
Alkylation of Monosubstituted Malonate Anions With Pyridinium and Quinolinium Salts
作者:Alan R. Katritzky、Jose M. Aurrecoechea
DOI:10.1055/s-1987-27938
日期:——
Monosubstituted malonate anions are alkylated at room temperature with 1-(sec-alkyl)quinolinium salts. Hindered disubstituted malonate esters can thus be prepared under very mild conditions.