A new C2-symmetric azolium compound for Cu-catalyzed asymmetric conjugate addition of R2Zn to cyclic enone
作者:Ayako Harano、Satoshi Sakaguchi
DOI:10.1016/j.jorganchem.2010.07.038
日期:2011.1
A new chiral N-heterocyclic carbene (NHC) ligand was designed. Thus, an efficient synthetic route to C2-symmetric bis(hydroxyamide)-functionalized benzimidazolium salts from chiral β-amino alcohols was developed. The combination of Cu(OTf)2 and the chiral azolium compound efficiently promoted the conjugate addition reaction of cyclic enone with dialkylzinc to give the corresponding adduct in good yield
The present invention is directed to compound of the formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, X, Y, and ##STR2## are as defined herein. These compounds are useful for inhibiting the activity of a metalloproteinase by contacting the metalloproteinase with an effective amount of the inventive compounds.
Amine-Promoted Asymmetric (4+2) Annulations for the Enantioselective Synthesis of Tetrahydropyridines: A Traceless and Recoverable Auxiliary Strategy
作者:Pengfei Hu、Jian Hu、Jiajun Jiao、Xiaofeng Tong
DOI:10.1002/anie.201300526
日期:2013.5.10
without a trace: The in situ reaction of 2‐(acetoxymethyl)buta‐2,3‐dienoate and a secondary amine produces a 2‐methylene‐3‐oxobutanoate equivalent that can be used in asymmetric [4+2] annulations with N‐tosylimines to provide tetrahydropyridines in good to excellent yields and enantioselectivities. The amine is easily recovered and acts as a tracelessauxiliary.
[EN] HETEROARYL SUCCINAMIDES AND THEIR USE AS METALLOPROTEINASE INHIBITORS<br/>[FR] SUCCINAMIDES HETEROARYLE ET LEUR UTILISATION COMME INHIBITEURS DE METALLOPROTEINASES
申请人:AGOURON PHARMACEUTICALS, INC.
公开号:WO1998017643A1
公开(公告)日:1998-04-30
(EN) The present invention is directed to compound of formula (I), wherein R1, R2, R3, R4, R5, X, Y and (Ia) are as defined herein. These compounds are useful for inhibiting the activity of a metalloproteinase by contacting the metalloproteinase with an effective amount of the inventive compounds.(FR) La présente invention porte sur un composé de la formule (I) dans laquelle R1, R2, R3, R4, R5, X, Y et (Ia) sont tels que définis dans la demande. Ces composés sont utiles pour inhiber l'activité d'une métalloprotéinase en mettant en contact cette métalloprotéinase avec une quantité efficace des composés de l'invention.
Metalloproteinase inhibitors, pharmaceutical compositions containing them, and their use
申请人:——
公开号:US20020019429A1
公开(公告)日:2002-02-14
The present invention is directed to compound of the formula I:
1
wherein R
1
, R
2
, R
3
, R
4
, R
5
, X, Y, and
2
are as defined herein.
These compounds are useful for inhibiting the activity of a metalloproteinase by contacting the metalloproteinase with an effective amount of the inventive compounds.