已经研究了苄胺和硼酸酯之间的偶联反应。邻-Lithiated苄胺与硼酸酯反应,并且一个Ñ -activator,得到邻位与正规1,1'-亚苄基取代的插入苄硼酸酯到C-B键。该反应通过S N 2'的消除和N活化的硼酸酯络合物的1,2-金属化物重排而得到脱芳香化的中间体,该中间体经过路易斯酸催化的1,3-硼向转变以得到硼酸酯产物。高收率和优异的对映体特异性。使用富含对映体的α-取代的苄胺得到相应的具有高ee的仲硼酸酯。
Enantiospecific Synthesis of
<i>ortho</i>
‐Substituted 1,1‐Diarylalkanes by a 1,2‐Metalate Rearrangement/
<i>anti</i>
‐S
<sub>
<i>N</i>
</sub>
2′ Elimination/Rearomatizing Allylic Suzuki–Miyaura Reaction Sequence
作者:Belén Rubial、Beatrice S. L. Collins、Raphael Bigler、Stefan Aichhorn、Adam Noble、Varinder K. Aggarwal
DOI:10.1002/anie.201811343
日期:2019.1.28
The one‐pot sequential coupling of benzylamines, boronic esters, and aryl iodides has been investigated. In the presence of an N‐activator, the boronate complex formed from an ortho‐lithiated benzylamine and a boronic ester undergoes stereospecific 1,2‐metalate rearrangement/anti‐SN2′ elimination to form a dearomatized tertiary boronic ester. Treatment with an aryl iodide under palladium catalysis
研究了苄胺、硼酸酯和芳基碘化物的一锅顺序偶联。在 N-活化剂存在下,由邻位锂化苄胺和硼酸酯形成的硼酸酯络合物经历立体定向 1,2-金属化物重排/抗 S N 2' 消除,形成脱芳构化叔硼酸酯。在钯催化下用芳基碘化物处理导致 γ-选择性烯丙基 Suzuki-Miyaura 交叉偶联重新芳构化,生成 1,1-二芳基烷烃。当使用对映体富集的 α-取代苄胺时,会形成具有高立体特异性的相应 1,1-二芳基烷烃。
Imidazo 4,5-C Pyridine Compounds and Methods of Antiviral Treatment
申请人:Bondy S. Steven
公开号:US20070244148A1
公开(公告)日:2007-10-18
The present invention relates to a pharmaceutical composition for the treatment or prevention of viral infections comprising as an active principle at least one imidazo[4,5-c]pyridine prodrug having the general formula (Z):
The invention also relates to processes for the preparation of compounds according to the invention having above mentioned general formula and their use as a medicine or to treat or prevent viral infections.
IMIDAZO[4,5-c]PYRIDINE COMPOUNDS AND METHODS OF ANTIVIRAL TREATMENT
申请人:Bondy Steven S.
公开号:US20100028301A1
公开(公告)日:2010-02-04
The present invention relates to pharmaceutical compositions for the treatment or prevention of viral infections comprising as an active principle at least one imidazo[4,5-c]pyridine prodrug having the general Formula (A) wherein the substituents are described in the specification. The invention also relates to processes for the preparation and screening of compounds according to the invention having above mentioned general Formula and their use in the treatment or prophylaxis of viral infections.
PIPERAZINYLPIPERIDINE DERIVATIVES AS CHEMOKINE RECEPTOR ANTAGONISTS
申请人:Xue Chu-Biao
公开号:US20120295912A1
公开(公告)日:2012-11-22
The present invention relates to compounds of Formula I:
wherein variable substituents are defined herein, that modulate the activity of or bind to chemokine receptors such as CCR5. In some embodiments, the compounds of the invention are selective for CCR5. The compounds can be used, for example, to treat diseases associated with chemokine receptor expression or activity such as inflammatory diseases, immune diseases and viral infections.
Imidazo[4,5-d]pyrimidines, their uses and methods of preparation
申请人:Puerstinger Gerhard
公开号:US20090208456A1
公开(公告)日:2009-08-20
The present invention relates to pharmaceutical compositions for the treatment of prevention of viral infections comprising as an active principle at least one imidazo[4,5-c]pyrimidine having the general formula (A), wherein the substituents are described in the specification. The invention also relates to processes for the preparation of compounds according to the invention having above mentioned general formula, their pharmaceutically acceptable formulations and their use as a medicine or to treat or prevent viral infections.