Synthesis of Cyclic Anhydrides via Ligand‐Enabled C–H Carbonylation of Simple Aliphatic Acids
作者:Zhe Zhuang、Alastair N. Herron、Jin‐Quan Yu
DOI:10.1002/anie.202104645
日期:2021.7.19
have lent themselves to the one-step preparation of a number of valuable synthetic motifs that are often difficult to prepare through conventional methods. Herein, we report a β- or γ-C(sp3)–H carbonylation of free carboxylic acids using Mo(CO)6 as a convenient solid CO source and enabled by a bidentate ligand, leading to convenient syntheses of cyclic anhydrides. Among these, the succinic anhydride
Structure activity studies of ring E analogues of methyllycaconitine. Part 2: Synthesis of antagonists to the α3β4* nicotinic acetylcholine receptors through modifications to the ester
作者:Stephen C Bergmeier、Khadiga A Ismail、Kristjan M Arason、Susan McKay、Darrell L Bryant、Dennis B McKay
DOI:10.1016/j.bmcl.2004.05.001
日期:2004.7
number of simpler analogues of the norditerpeniod alkaloid methyllycaconitine (MLA) in an effort to understand molecular determinants of nAChR*small molecule interactions. We have previously reported the synthesis and evaluation of a series of ring Eanalogues of MLA. We report here the optimization of the alpha3beta4* functional activity of this series of compounds through modification of the ester.
A new regioselective synthesis of 3-substituted furan-2(5H)-ones by palladium-catalysed reductive carbonylation of alk-1-ynes
作者:Bartolo Gabriele、Giuseppe Salerno、Mirco Costa、Gian Paolo Chiusoli
DOI:10.1016/s0040-4039(98)02464-2
日期:1999.1
or 3-aryl-substituted furan-2(5H)-ones are obtained directly in fair yields by reductive carbonylation of alk-1-ynes in the presence of catalytic amounts of palladium iodide in conjunction with potassium iodide (10 eq.) and water (200 eq.). Simultaneous oxidation of CO to CO2 accounts for the stoichiometry of the process. Reactions are carried out in dioxane under mild conditions (80 °C and 10 atm of
Chemical Probing of the Human Sirtuin 5 Active Site Reveals Its Substrate Acyl Specificity and Peptide-Based Inhibitors
作者:Claudia Roessler、Theresa Nowak、Martin Pannek、Melanie Gertz、Giang T. T. Nguyen、Michael Scharfe、Ilona Born、Wolfgang Sippl、Clemens Steegborn、Mike Schutkowski
DOI:10.1002/anie.201402679
日期:2014.9.26
sirtuin 5 is a weak deacetylase but a very efficient demalonylase and desuccinylase; however, its substrate acyl specificity has not been systematically analyzed. Herein, we investigated a carbamoyl phosphate synthetase 1 derived peptide substrate and modified the lysine side chain systematically to determine the acyl specificity of Sirt5. From that point we designed six potent peptide‐based inhibitors
[EN] SUBSTITUTED THIAZOLE COMPOUNDS<br/>[FR] COMPOSÉS DE THIAZOLE SUBSTITUÉS
申请人:HOFFMANN LA ROCHE
公开号:WO2014086701A1
公开(公告)日:2014-06-12
The invention is concerned with the compounds of formula (I) and pharmaceutically acceptable salts thereof. In addition, the present invention relates to methods of manufacturing and using the compounds of formula (I) as well as pharmaceutical compositions containing such compounds. The compounds of formula (I) are LMP7 inhibitors and may be useful in treating associated inflammatory diseases and disorders such as, for example, rheumatoid arthritis, lupus and irritable bowel disease.