用RhCl [(R,R)-TsDPEN](C 5 Me 5)催化的甲酸/三乙胺共沸混合物将代表性的苯并呋喃基α-磺酰氧基酮和N-保护的α-氨基酮进行不对称转移氢化,得到了相应的1,2-二醇单磺酸盐和N-取代的β-氨基醇,收率高,对映选择性高达99%。还描述了还原产物向具有伯胺基的手性苯并呋喃基β-氨基醇的转化。
用RhCl [(R,R)-TsDPEN](C 5 Me 5)催化的甲酸/三乙胺共沸混合物将代表性的苯并呋喃基α-磺酰氧基酮和N-保护的α-氨基酮进行不对称转移氢化,得到了相应的1,2-二醇单磺酸盐和N-取代的β-氨基醇,收率高,对映选择性高达99%。还描述了还原产物向具有伯胺基的手性苯并呋喃基β-氨基醇的转化。
[EN] HYDANTOIN DERIVATIVES FOR THE TREATMENT OF INFLAMMATORY DISORDERS<br/>[FR] DÉRIVÉS D' HYDANTOINE POUR LE TRAITEMENT DE TROUBLES INFLAMMATOIRES
申请人:SCHERING CORP
公开号:WO2006019768A1
公开(公告)日:2006-02-23
This invention relates to compounds of Formula (1) or a pharmaceutically acceptable salt, solvate or isomer thereof, which can be useful for the treatment of diseases or conditions mediated by MMPs, ADAMs, TACE, TNF- or combinations thereof.
Preparation of dl-threo-2-dichloroacetamido-1-(2-benzofuranyl)propane-1,3-diol (VI), adopting the method of Sorm, et al, has been described. The structures of the final compound (VI) as well as of the two precursors (V and IV) have been confirmed by ir, nmr and mass spectral studies.
the synthesis of 2,5-disubstitutedoxazolesvia iodine-promoted oxidative domino cyclization. These reactions were performed with readily available methyl azaarenes and α-amino ketones under metal-free conditions. This protocol is a simple method with high functional group compatibility, a wide range of substrates, and excellent yield, providing a new way to synthesize azaarene-attached oxazoles.