Silver nitrate‐catalyzed cascade decarboxylation and oxidativecyclization of α‐oxocarboxylic acids, alkenes, and aldehydes is demonstrated for the first time. With ammonium persulfate as the oxidant, the cascade reactions afford dihydroflavonoid derivatives as products in moderate to good yields, exhibiting a broad substrate tolerance. Control experiments indicated that the mechanism includes a radical
[EN] SPECIFIC INHIBITORS OF METHIONYL-TRNA SYNTHETASE<br/>[FR] INHIBITEURS SPÉCIFIQUES DE LA MÉTHIONYL-TARN SYNTHÉTASE
申请人:UNIV WASHINGTON
公开号:WO2016029146A1
公开(公告)日:2016-02-25
The present disclosure is generally directed to compositions useful in the inhibition of MetRS and methods for treating diseases that are ameliorated by the inhibition of MetRS.
本公开涉及的是通常用于抑制MetRS的组合物和治疗通过抑制MetRS改善的疾病的方法。
N-(4- carbamimidoyl-phenyl) -glycine derivatives
申请人:——
公开号:US20010001799A1
公开(公告)日:2001-05-24
The invention is concerned with novel N-(4-carbamimidoyl-phenyl)-glycine derivatives of the formula:
1
wherein R
1
, E, X
1
to X
4
and G
1
and G
2
are as defined in the description and the claims, as well as hydrates or solvates and physiologically usable salts thereof.
Straightforward synthesis of functionalized chroman-4-ones through cascade radical cyclization-coupling of 2-(allyloxy)arylaldehydes
作者:Jingjing Zhao、Pan Li、Xinjian Li、Chungu Xia、Fuwei Li
DOI:10.1039/c5cc09730d
日期:——
A novel and direct approach to synthesize a series of phosphonate, azide and hydroxy functionalized chroman-4-ones has been developed. The transformation appears to proceed via an intramolecular addition of in situ generated acyl radical onto alkene, followed by a radical/radical cross coupling.
Synthesis of Chromenoisoxazolidines from Substituted Salicylic Nitrones via Visible-Light Photocatalysis
作者:Graham Haun、Alyson N. Paneque、David W. Almond、Brooke E. Austin、Gustavo Moura-Letts
DOI:10.1021/acs.orglett.9b00097
日期:2019.3.1
reports the first redox-neutral visible-light photocatalytic intramolecular dipolar cycloaddition for the diastereoselective synthesis of chromenoisoxazolidines. The authors have found that alkenylphenyl nitrones with a diverse substitution pattern on the aromatic ring and the alkenyl substituent undergo visible-light-promoted cycloadditions in the presence of catalytic amounts of Ru(bpy)3Cl2 in high