Poly(ethylene glycol) Supported Metal Nitrates as Well-Organized Reagents for Hunsdiecker Conversion of α,β-Unsaturated Acids to β-Nitrostyrenes under Solvent and Acid-Free Conditions
Synthesis of strained cyclic peptides via an aza-Michael–acyl-transfer reaction cascade
作者:Jochem P. A. Rutters、Yvette Verdonk、Remko de Vries、Steen Ingemann、Henk Hiemstra、Vincent Levacher、Jan H. van Maarseveen
DOI:10.1039/c2cc34121b
日期:——
A new method is presented to prepare strained lactams. Esterification of the C-terminus of a dipeptide with β-nitrostyrene or quinoline-type auxiliaries is followed by lactam formation by an intramolecular aza-Michaelâacyl-transfer reaction cascade. Ultimately, the cyclic tetrapeptide cyclo[Phe-Tyr-Ala-Gly] has been prepared.
Organocatalytic Biomimetic Reduction of Conjugated Nitroalkenes
作者:Peter Schreiner、Zhiguo Zhang
DOI:10.1055/s-2007-983805
日期:2007.8
A thiourea-catalyzed biomimetic reduction of conjugatednitroalkenes has been developed. Various aromatic and aliphatic conjugatednitroalkenes can be reduced to give the respective nitroalkanes with good yields under mild conditions. This protocol is not only practical, but may also provide insight into the mechanisms of redox transformations in biological systems.
[EN] PHTHALAZINE DERIVATIVES OF FORMULA (I) AS PCAF AND GCN5 INHIBITORS FOR USE IN THE TREATMENT OF CANCER<br/>[FR] DÉRIVÉS PHTALAZINE DE FORMULE (I) UTILISÉS COMME INHIBITEURS DE LA PCAF ET DE LA GCN5 DESTINÉS À ÊTRE UTILISÉS DANS LE TRAITEMENT DU CANCER
申请人:GENENTECH INC
公开号:WO2016036954A1
公开(公告)日:2016-03-10
The present invention relates to methods for treating PCAF and GCN5 mediated disorders using a compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein ring A, R1, R3, R4, R5, and each Re have any of the values defined in the specification. Also included are novel compounds of Formula (I) and salts thereof, as well as pharmaceutical compositions comprising a compound of formula (I) or a pharmaceutically acceptable salt thereof.
Visible-light-enabled denitrative carboxylation of β-nitrostyrenes: a direct photocatalytic approach to cinnamic acids
作者:Shubhangi Tripathi、Lal Dhar S. Yadav
DOI:10.1039/c7nj04578f
日期:——
The first workable application of β-nitrostyrenes and CBr4 as coupling partners for a highly stereoselective synthesis of (E)-cinnamic acids under visible light photoredox catalysis is reported. The reaction involves a radical denitrative tribromomethylation/hydrolysis cascade to afford (E)-cinnamic acids in excellent yields at room temperature in a one-pot procedure. Moreover, the implementation of
A straightforwardsynthesis of 1,2‐dicyanoalkanes by reacting nitroalkenes with trimethylsilyl cyanide in the presence of tetrabutylammoniumfluoride is described. The reaction proceeds through a tandem double Michael addition under mild conditions. Employing the hypervalent silicate generated from trimethylsilyl cyanide and tetrabutylammoniumfluoride is essential for achieving this transformation