Electrochemical synthesis of versatile ammonium oxides under metal catalyst-, exogenous-oxidant-, and exogenous-electrolyte-free conditions
作者:Yong Yuan、Liang-Sen Li、Lin Zhang、Feng Wang、Lin Jiang、Lin Zuo、Qi Wang、Jian-Guo Hu、Aiwen Lei
DOI:10.1039/d1cc00486g
日期:——
An electrochemical oxidative cross-coupling reaction between 2.5-substituted-pyrazolin-5-ones and ammoniumthiocyanate has been developed, which resulted in a series of unprecedented cross-coupling products under metal catalyst-, exogenous-oxidant-, and exogenous-electrolyte-free conditions. It is worth noting that since the resulting cross-coupling products are nearly insoluble in MeCN, the pure product
Regioselectivity Switch in Palladium‐Catalyzed Allenylic Cycloadditions of Allenic Esters: [4+1] or [4+3] Cycloaddition/Cross‐Coupling
作者:Long Li、Pengfei Luo、Yuhua Deng、Zhihui Shao
DOI:10.1002/anie.201901511
日期:2019.3.26
The first Pd‐catalyzed asymmetric allenylic [4+1] cycloaddition was successfully developed. Alternatively, tuning the Pd catalyst switched the reactivity toward an unprecedented [4+3] cycloaddition/cross‐coupling. Ligands play a vital role in controlling the reaction pathway, allowing highly selective access to different products from identical substrates. Biological evaluation of the obtained compounds
Rhodium‐Catalyzed [4+2] Annulation of N‐Aryl Pyrazolones with Diazo Compounds To Access Pyrazolone‐Fused Cinnolines
作者:Chih‐Yu Lin、Wan‐Wen Huang、Ying‐Ti Huang、Sandip Dhole、Chung‐Ming Sun
DOI:10.1002/ejoc.202101005
日期:2021.9.21
An efficientsynthesis of novel dinitrogen-fused heterocycles, such as pyrazolo[1,2-a]cinnoline derivatives, has been accomplished by the rhodium(III)-catalyzed reaction of N-arylpyrazol-5-ones with diazo compounds. This reaction proceeds through a cascade C−H activation/intramolecular cyclization under mild reaction conditions and features a broad substrate scope.
新型二氮稠合杂环的有效合成,例如吡唑并[1,2- a ]肉啉衍生物,已通过铑(III)催化的N-芳基吡唑-5-酮与重氮化合物的反应完成。该反应在温和的反应条件下通过级联 CH 活化/分子内环化进行,具有广泛的底物范围。
Plasminogen Activator Inhibitor-1 Inhibitor
申请人:Muto Susumu
公开号:US20070276011A1
公开(公告)日:2007-11-29
A medicament having inhibitory activity against plasminogen activator inhibitor-1, which comprises as an active ingredient a compound represented by the following general formula (I) or a salt thereof:
wherein R
1
and R
2
represents an aromatic group which may be substituted, W represents a group selected from the following connecting group W-1:
(wherein a bond at the left end binds to the carbon atom and a bond at the right end binds to the nitrogen atom, X represents sulfur atom or NH, Y represents oxygen atom or sulfur atom,
R
3
represents a hydrocarbon group, hydroxy group, or carboxy group),
Z represents a single bond or a connecting group wherein a number of atoms in a main chain is 1 to 3.
A medicament having inhibitory activity against plasminogen activator inhibitor-1, which comprises as an active ingredient a compound represented by the following general formula (I) or a salt thereof:
wherein R1 and R2 represents an aromatic group which may be substituted,
W represents a group selected from the following connecting group W-1:
(wherein a bond at the left end binds to the carbon atom and a bond at the right end binds to the nitrogen atom,
X represents sulfur atom or NH,
Y represents oxygen atom or sulfur atom,
R3 represents a hydrocarbon group, hydroxy group, or carboxy group),
Z represents a single bond or a connecting group wherein a number of atoms in a main chain is 1 to 3.
一种对纤溶酶原激活物抑制剂-1 具有抑制活性的药物,其活性成分包括下式(I)所代表的化合物或其盐:
其中 R1 和 R2 代表可被取代的芳香基团、
W 代表选自下列连接基 W-1 的基团:
(其中左端的键与碳原子结合,右端的键与氮原子结合、
X 代表硫原子或 NH
Y 代表氧原子或硫原子、
R3 代表烃基、羟基或羧基)、
Z 代表单键或连接基团,其中主链中的原子数为 1 至 3。