The present invention is directed to peptidomimetic macrocyclic compounds which inhibit prenyl-protein transferase and the prenylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting prenyl-protein transferase and the prenylation of the oncogene protein Ras.
Nickel-Catalyzed Coupling Reactions of Alkyl Electrophiles, Including Unactivated Tertiary Halides, To Generate Carbon–Boron Bonds
作者:Alexander S. Dudnik、Gregory C. Fu
DOI:10.1021/ja304068t
日期:2012.6.27
examples of coupling reactions of unactivated tertiaryalkyl electrophiles, as well as our first success with nickel-catalyzed couplings that generate bonds other than C-C bonds. Specifically, we have determined that this catalyst accomplishes Miyaura-type borylations of unactivated tertiary, secondary, and primary alkylhalides with diboron reagents to furnish alkylboronates, a family of compounds with substantial
通过使用NiBr(2)·二甘醇二甲醚原位形成的催化剂和pybox配体(两者均可商购),我们实现了未活化叔烷基亲电试剂偶联反应的第一个实例,并取得了首次成功镍催化偶联产生除 CC 键以外的键。具体来说,我们已经确定,这种催化剂在温和条件下完成了未活化的叔、仲和伯烷基卤化物与二硼试剂的宫浦型硼酸化反应,以提供烷基硼酸酯,这是一个具有实质性(并扩大)效用的化合物家族;事实上,叔烷基溴的 umpolung 硼酸化可以在低至 -10 °C 的温度下实现。该方法表现出良好的官能团兼容性和区域特异性,这两者都可能是合成烷基硼酸酯的传统方法的问题。与看似相关的镍催化 CC 键形成过程相反,在这种镍催化的 CB 键形成反应中,叔卤化物比仲卤化物或伯卤化物更具反应性;鉴于两种转化都可能遵循氧化加成的内球电子转移途径,这种差异尤其值得注意。
Use of xanthine derivatives for reducing the pathological hyperreactivity of eosinophilic granulocytes, novel xanthine compounds and process for their preparation
申请人:Hoechst Aktiengesellschaft
公开号:US20020010333A1
公开(公告)日:2002-01-24
Use of xanthine derivatives for reducing the pathological hyperreactivity of eosinophilic granulocytes, novel xanthine compounds and process for their preparation.
Tertiary 1-(hydroxyalkyl)-4-alkylxanthines are suitable for the production of pharmaceuticals for the treatment of disorders which is associated with a pathologically increased reactivity of eosinophilic granulocytes. Novel xanthine derivatives and process for their preparation are described.
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.