据报道,铝(I)和镁(I)化合物可用于应变亚烷基环丙烷的 CC σ 键活化。这些反应导致在单个位点 (Al) 或跨金属-金属键 (Mg-Mg) 将 CC σ-键正式添加到主族中心。机理研究表明,这些反应不是通过协同氧化加成发生,而是涉及逐步过程,其中底物与主族金属结合作为破坏 CC σ 键的 α- 或 β- 烷基迁移步骤的前体。这种机理理解用于开发亚烷基环丙烷的 CC σ 键的镁催化氢化硅烷化。
Hydrazines and Azides via the Metal-Catalyzed Hydrohydrazination and Hydroazidation of Olefins
作者:Jérôme Waser、Boris Gaspar、Hisanori Nambu、Erick M. Carreira
DOI:10.1021/ja062355+
日期:2006.9.1
which the H and the N atoms come from two different reagents, a silane and an oxidizing nitrogen source (azodicarboxylate or sulfonyl azide). The hydrohydrazination reaction using di-tert-butyl azodicarboxylate is characterized by its ease of use, large functional group tolerance, and broad scope, including mono-, di-, tri-, and tetrasubstituted olefins. Key to the development of the hydroazidation
报道了 Co 和 Mn 催化的烯烃加氢肼和加氢叠氮化反应的发现、研究和实施。这些反应等效于 CC 双键与受保护的肼或偶氮酸的直接加氢胺化,但基于不同的概念,其中 H 和 N 原子来自两种不同的试剂,硅烷和氧化性氮源(偶氮二羧酸或磺酰叠氮化物) )。使用偶氮二羧酸二叔丁酯的加氢肼反应具有使用方便、官能团耐受性大、适用范围广的特点,包括单、二、三和四取代烯烃。氢叠氮化反应发展的关键是使用磺酰叠氮化物作为氮源和叔丁基过氧化氢的活化作用。发现该反应对于单、二和三取代烯烃的官能化是有效的,并且只有少数官能团是不能容忍的。获得的烷基叠氮化物是通用中间体,可以在不分离叠氮化物的情况下转化为游离胺或三唑。初步的机理研究表明,烯烃的氢化钴是限速的,然后是胺化反应。不能排除并可能涉及自由基中间体。然后进行胺化反应。不能排除并可能涉及自由基中间体。然后进行胺化反应。不能排除并可能涉及自由基中间体。
[EN] NOVEL TETRAHYDROQUINOLINE DERIVATIVES<br/>[FR] DÉRIVÉS INÉDITS DE LA TÉTRAHYDROQUINOLINE
申请人:HOFFMANN LA ROCHE
公开号:WO2012101068A1
公开(公告)日:2012-08-02
A compound of formula (I) or a pharmaceutically acceptable salt or ester thereof, wherein R1 to R8, A1 to A3 have the significance given in claim 1, can be used as AMPK modulators for treating obesity, hyperglycemia or type 2 diabetes.
[EN] PYRROLO[2,3-D]PYRIMIDINE TROPOMYOSIN-RELATED KINASE INHIBITORS<br/>[FR] INHIBITEURS DE KINASE ASSOCIÉE À LA TROPOMYOSINE PYRROLO[2,3-D]PYRIMIDINE
申请人:PFIZER LTD
公开号:WO2014053967A1
公开(公告)日:2014-04-10
The present invention relates to compounds of Formula (I) and their pharmaceutically acceptable salts, wherein the substituents are as described herein, and their use in medicine, in particular as Trk antagonists.
The present invention relates to a compound of formula (I)
or a pharmaceutically acceptable salt or ester thereof, wherein R
1
to R
8
, A
1
to A
3
have the are as described herein and compositions including the compounds.
Substituted cycloalkyl P1' hepatitis C virus inhibitors
申请人:——
公开号:US20040077551A1
公开(公告)日:2004-04-22
The present invention relates to tripeptide compounds, compositions and methods for the treatment of hepatitis C virus (HCV) infection. In particular, the present invention provides novel tripeptide analogs, pharmaceutical compositions containing such analogs and methods for using these analogs in the treatment of HCV infection.