Chiral Surfactant-Type Catalyst for Asymmetric Reduction of Aliphatic Ketones in Water
作者:Jiahong Li、Yuanfu Tang、Qiwei Wang、Xuefeng Li、Linfeng Cun、Xiaomei Zhang、Jin Zhu、Liangchun Li、Jingen Deng
DOI:10.1021/ja308357y
日期:2012.11.14
A novel chiral surfactant-type catalyst is developed. Micelles formed in water by association of the catalysts themselves, and this was confirmed by TEM analyses. Asymmetric transfer hydrogenation of aliphaticketones catalyzed by the chiral metallomicellar catalyst gave good to excellent conversions and remarkable stereoselectivities (up to 95% ee). Synergistic effects between the metal-catalyzed
开发了一种新型手性表面活性剂型催化剂。通过催化剂本身的结合在水中形成胶束,这通过 TEM 分析得到证实。由手性金属胶束催化剂催化的脂肪族酮的不对称转移氢化具有良好到优异的转化率和显着的立体选择性(高达 95% ee)。金属催化中心与金属胶束中核心的疏水微环境之间的协同作用导致高对映选择性。
Substituted xanthine derivatives
申请人:Tung Roger D.
公开号:US20090239886A1
公开(公告)日:2009-09-24
This invention relates to novel compounds that are substituted xanthine derivatives and pharmaceutically acceptable salts thereof. For example, this invention relates to novel substituted xanthine derivatives that are derivatives of pentoxifylline. This invention also provides compositions comprising one or more compounds of this invention and a carrier and the use of the disclosed compounds and compositions in methods of treating diseases and conditions for which pentoxifylline and related compounds are beneficial.
[EN] SUBSTITUTED XANTHINE DERIVATIVES<br/>[FR] DÉRIVÉS DE XANTHINE SUBSTITUÉS
申请人:CONCERT PHARMACEUTICALS INC
公开号:WO2011028835A1
公开(公告)日:2011-03-10
This invention relates to novel compounds that are substituted xanthine derivatives and pharmaceutically acceptable salts thereof. For example, this invention relates to novel substituted xanthine derivatives that are derivatives of pentoxifylline. This invention also provides compositions comprising one or more compounds of this invention and a carrier and the use of the disclosed compounds and compositions in methods of treating diseases and conditions for which pentoxifylline and related compounds are beneficial.
(EN) A process for synthesizing enantiomerically pure chiral secondary alcohol compounds linked to a heterocyclic core moiety, using a natural chiral molecule starting material. The inventive process is particularly useful for bulk manufacturing of chiral secondary alcohol compounds.(FR) Procédé de synthèse de composés d'alcool secondaires chiraux purs sur le plan énantiomère et liés à une fraction de noyau hétérocyclique au moyen d'un matériau de départ à molécules chirales naturelles. Le procédé selon l'invention est particulièrement utile pour la fabrication en masse de composés d'alcools secondaires chiraux.
Novel pyridopyrimidine-based compounds are found to be useful for the treatment or prevention of symptoms or manifestations associated with diseases or disorders affected by cytokine intracellular signaling.