K2CO3 (3a)-mediated (3+2) cycloisomerization of beta-ketosulfones 1 with 1,4-dichloro-2-butyne (2) in acetone afforded substituted 2-vinylfurans 4 at 56 degrees C for 8 h in good yields. The one-pot tandem route provides mild, facile and efficient reaction conditions. A plausible mechanism has been discussed and proposed. (C) 2015 Elsevier Ltd. All rights reserved.
This invention relates to compounds of Formula (I), (II), or (III) as shown in the specification, which contain a 1,5-diphenylpenta-1,4-dien-3-one backbone. These compounds can be used to treat cancer, inflammatory disease, or autoimmune disease.
[EN] ALLOSTERIC INHIBITORS OF ATYPICAL PROTEIN KINASES C<br/>[FR] INHIBITEURS ALLOSTÉRIQUES DE PROTÉINES KINASES C ATYPIQUES
申请人:UNIV SAARLAND
公开号:WO2015075051A1
公开(公告)日:2015-05-28
The invention provides specific small molecule compounds that allosterically regulate the activity of atypical protein kinase C, their use as a medicament, and their use in the treatment and prevention of allergic, inflammatory and autoimmune disorders, cancer, hyperproliferation, sepsis, viral and protozoan infections, dementing diseases, metabolic, sclerotic and osteoporotic disorders.
Efficient Synthesis of Functionalized β-Keto Esters and β-Diketones through Regioselective Hydration of Alkynyl Esters and Alkynyl Ketones by Use of a Cationic NHC-Au<sup>I</sup>Catalyst
Regioselective hydration of α-alkynyl esters and ketones by using a cationic NHC–AuI catalyst results in β-keto esters and β-diketones, respectively. Controlled release of water in acetone by aldol self-condensationunder the reaction conditions makes acetone as better solvent than 1,4-dioxane/water for the hydration of α-alkynyl esters having sensitive ester moieties.
Synthesis of <i>peri</i>-Substituted (Naphthalen-1-yl)phosphine Ligands by Rhodium(I)-Catalyzed Phosphine-Directed C–H Arylation
作者:Xue Luo、Jia Yuan、Chang-Duo Yue、Zi-Yang Zhang、Jian Chen、Guang-Ao Yu、Chi-Ming Che
DOI:10.1021/acs.orglett.8b00305
日期:2018.4.6
A novel protocol for effective rhodium(I)-catalyzed C–H arylation of tertiary phosphines has been devised. It is amenable to a wide range of substrates and gives the products in moderate to high yields. This strategy provides a simple and efficientroute to peri-substituted (naphthalen-1-yl)phosphines.
Preparation of <i>β</i>-Keto Esters and <i>β</i>-Diketones by C-Acylation/Deacetylation of Acetoacetic Esters and Acetonyl Ketones with 1-Acylbenzotriazoles
作者:Alan R. Katritzky、Zuoquan Wang、Mingyi Wang、Chavon R. Wilkerson、C. Dennis Hall、Novruz G. Akhmedov
DOI:10.1021/jo049274l
日期:2004.10.1
Acyl-, aroyl-, and heteroaroyl-acetic esters 6a−f and 8a−l are prepared by reactions of 1-acylbenzotriazoles 1a−k with acetoacetic esters 5 or 7a,b in the presence of sodium hydride followed by regioselective deacetylation. Similar C-acylation/deacetylation of acetylacetone and benzoylacetone affords β-diketones 10a−d and 13a−c, respectively.