[EN] BENZODIOXANE DERIVATIVES AND THEIR PHARMACEUTICAL USE<br/>[FR] DÉRIVÉS DE BENZODIOXANE ET LEUR UTILISATION PHARMACEUTIQUE
申请人:ORION CORP
公开号:WO2018002437A1
公开(公告)日:2018-01-04
Compounds of formula (I): wherein Ra and Rb are as defined in the claims, exhibit alpha2C antagonistic activity and are thus useful as alpha2C antagonists.
式(I)的化合物:其中Ra和Rb如权利要求中定义的,具有α2C拮抗活性,因此可用作α2C拮抗剂。
Iron‐Catalyzed Carbenoid‐Transfer Reactions of Vinyl Sulfoxonium Ylides: An Experimental and Computational Study
作者:Janakiram Vaitla、Annette Bayer、Kathrin H. Hopmann
DOI:10.1002/anie.201810451
日期:2018.12.3
the generation of unprecedented vinyl carbenoids from sulfoxonium ylides has been developed and applied in the synthesis of a diverse array of heterocycles such as indolizines, pyrroles, 3‐pyrrolin‐2‐ones, and furans. The reactions proceed by FeBr2 catalysis under mild reaction conditions with a broad substrate scope. A reaction pathway involving iron carbenoids is proposed based on a series of control
A Class of Readily Tunable Planar‐Chiral Cyclopentadienyl Rhodium(III) Catalysts for Asymmetric C–H Activation
作者:Xiaoqiang Yan、Jijun Jiang、Jun Wang
DOI:10.1002/anie.202201522
日期:2022.6.7
rhodium(III) (CpRhIII) complexes are powerful catalysts for promoting asymmetric C−H activation reactions. At present, their preparations mainly rely on the development of various chiral cyclopentadienyl (Cp) ligands by linking or embedding the Cp motif to or into a certain chiral backbone. In contrast, development of planar-chiral only CpRhIII catalysts bearing non-chiral Cp ligands remains a formidable
A series of chiral 3-aryl-4-phosphonobutyric acid esters were synthesized in high enantioselectivities (93-98% ee) via the Rh-catalyzed asymmetric hydrogenation of the corresponding 3-aryl-4-phosphonobutenoates using a P-stereogenic BoPhoz-type phosphine-aminophosphine ligand. The methodology has been successfully applied to the asymmetric synthesis of a potential GABA(B) antagonist, (R)-phaclofen, in high enantioselectivity.
Volkmann,R.A., Synthetic Communications, 1978, vol. 8, p. 541 - 547